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pip
===
The `PyPA recommended
<https://python-packaging-user-guide.readthedocs.org/en/latest/current.html>`_
tool for installing Python packages.
* `Installation <https://pip.pypa.io/en/stable/installing.html>`_
* `Documentation <https://pip.pypa.io/>`_
* `Changelog <https://pip.pypa.io/en/stable/news.html>`_
* `Github Page <https://github.com/pypa/pip>`_
* `Issue Tracking <https://github.com/pypa/pip/issues>`_
* `Mailing list <http://groups.google.com/group/python-virtualenv>`_
* User IRC: #pypa on Freenode.
* Dev IRC: #pypa-dev on Freenode.
.. image:: https://pypip.in/v/pip/badge.png
:target: https://pypi.python.org/pypi/pip
.. image:: https://secure.travis-ci.org/pypa/pip.png?branch=develop
:target: http://travis-ci.org/pypa/pip

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Metadata-Version: 2.0
Name: pip
Version: 6.1.1
Summary: The PyPA recommended tool for installing Python packages.
Home-page: https://pip.pypa.io/
Author: The pip developers
Author-email: python-virtualenv@groups.google.com
License: MIT
Keywords: easy_install distutils setuptools egg virtualenv
Platform: UNKNOWN
Classifier: Development Status :: 5 - Production/Stable
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Topic :: Software Development :: Build Tools
Classifier: Programming Language :: Python :: 2
Classifier: Programming Language :: Python :: 2.6
Classifier: Programming Language :: Python :: 2.7
Classifier: Programming Language :: Python :: 3
Classifier: Programming Language :: Python :: 3.2
Classifier: Programming Language :: Python :: 3.3
Classifier: Programming Language :: Python :: 3.4
Classifier: Programming Language :: Python :: Implementation :: PyPy
Provides-Extra: testing
Requires-Dist: pytest; extra == 'testing'
Requires-Dist: virtualenv (>=1.10); extra == 'testing'
Requires-Dist: scripttest (>=1.3); extra == 'testing'
Requires-Dist: mock; extra == 'testing'
pip
===
The `PyPA recommended
<https://python-packaging-user-guide.readthedocs.org/en/latest/current.html>`_
tool for installing Python packages.
* `Installation <https://pip.pypa.io/en/stable/installing.html>`_
* `Documentation <https://pip.pypa.io/>`_
* `Changelog <https://pip.pypa.io/en/stable/news.html>`_
* `Github Page <https://github.com/pypa/pip>`_
* `Issue Tracking <https://github.com/pypa/pip/issues>`_
* `Mailing list <http://groups.google.com/group/python-virtualenv>`_
* User IRC: #pypa on Freenode.
* Dev IRC: #pypa-dev on Freenode.
.. image:: https://pypip.in/v/pip/badge.png
:target: https://pypi.python.org/pypi/pip
.. image:: https://secure.travis-ci.org/pypa/pip.png?branch=develop
:target: http://travis-ci.org/pypa/pip

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pip/_vendor/requests/packages/chardet/langhungarianmodel.pyc,,
pip/_vendor/html5lib/utils.pyc,,
pip/_vendor/html5lib/trie/datrie.pyc,,
pip/_vendor/requests/structures.pyc,,
pip/_vendor/packaging/version.pyc,,
pip/_vendor/cachecontrol/adapter.pyc,,
pip/_vendor/requests/packages/urllib3/fields.pyc,,
pip/_vendor/requests/packages/urllib3/contrib/ntlmpool.pyc,,
pip/vcs/__init__.pyc,,
pip/req/req_file.pyc,,
pip/models/__init__.pyc,,
pip/_vendor/html5lib/trie/py.pyc,,
pip/_vendor/packaging/specifiers.pyc,,
pip/_vendor/requests/packages/chardet/gb2312freq.pyc,,
pip/commands/unzip.pyc,,
pip/commands/__init__.pyc,,
pip/_vendor/requests/packages/urllib3/__init__.pyc,,
pip/_vendor/distlib/compat.pyc,,
pip/models/index.pyc,,
pip/_vendor/lockfile/mkdirlockfile.pyc,,
pip/_vendor/distlib/wheel.pyc,,
pip/_vendor/requests/packages/chardet/euctwprober.pyc,,
pip/utils/build.pyc,,
pip/_vendor/requests/packages/chardet/escsm.pyc,,
pip/_vendor/requests/status_codes.pyc,,
pip/_vendor/requests/exceptions.pyc,,
pip/_vendor/distlib/markers.pyc,,
pip/index.pyc,,
pip/utils/logging.pyc,,
pip/utils/outdated.pyc,,
pip/_vendor/requests/api.pyc,,
pip/_vendor/requests/packages/urllib3/filepost.pyc,,
pip/_vendor/requests/packages/chardet/big5freq.pyc,,
pip/_vendor/html5lib/treebuilders/etree.pyc,,
pip/_vendor/requests/packages/chardet/cp949prober.pyc,,
pip/_vendor/cachecontrol/caches/file_cache.pyc,,
pip/_vendor/requests/packages/chardet/mbcsgroupprober.pyc,,
pip/_vendor/requests/packages/chardet/mbcssm.pyc,,
pip/_vendor/distlib/_backport/shutil.pyc,,
pip/__main__.pyc,,
pip/_vendor/cachecontrol/compat.pyc,,
pip/_vendor/html5lib/tokenizer.pyc,,
pip/download.pyc,,
pip/operations/freeze.pyc,,
pip/_vendor/lockfile/sqlitelockfile.pyc,,
pip/_vendor/requests/packages/chardet/utf8prober.pyc,,
pip/_vendor/requests/packages/chardet/langhebrewmodel.pyc,,
pip/_vendor/requests/packages/chardet/compat.pyc,,
pip/_vendor/progress/counter.pyc,,
pip/utils/filesystem.pyc,,
pip/_vendor/six.pyc,,
pip/_vendor/colorama/initialise.pyc,,
pip/_vendor/requests/packages/urllib3/packages/ordered_dict.pyc,,
pip/_vendor/requests/packages/chardet/eucjpprober.pyc,,
pip/_vendor/retrying.pyc,,
pip/_vendor/html5lib/treewalkers/etree.pyc,,
pip/_vendor/cachecontrol/wrapper.pyc,,
pip/_vendor/requests/hooks.pyc,,
pip/_vendor/packaging/_structures.pyc,,
pip/_vendor/requests/packages/urllib3/connectionpool.pyc,,
pip/_vendor/requests/packages/chardet/mbcharsetprober.pyc,,
pip/locations.pyc,,
pip/_vendor/requests/packages/chardet/jisfreq.pyc,,
pip/_vendor/requests/packages/chardet/sbcsgroupprober.pyc,,
pip/vcs/subversion.pyc,,
pip/_vendor/requests/packages/urllib3/util/connection.pyc,,
pip/exceptions.pyc,,
pip/basecommand.pyc,,
pip/_vendor/distlib/locators.pyc,,
pip/_vendor/html5lib/filters/_base.pyc,,
pip/_vendor/re-vendor.pyc,,
pip/_vendor/html5lib/treewalkers/dom.pyc,,
pip/_vendor/requests/packages/urllib3/contrib/__init__.pyc,,
pip/_vendor/requests/packages/chardet/euctwfreq.pyc,,
pip/_vendor/requests/packages/chardet/chardistribution.pyc,,
pip/_vendor/cachecontrol/caches/__init__.pyc,,
pip/_vendor/pkg_resources/tests/test_pkg_resources.pyc,,
pip/req/req_uninstall.pyc,,
pip/req/req_requirement.pyc,,
pip/_vendor/requests/packages/chardet/sbcharsetprober.pyc,,
pip/_vendor/colorama/ansitowin32.pyc,,
pip/_vendor/cachecontrol/filewrapper.pyc,,
pip/_vendor/requests/packages/chardet/sjisprober.pyc,,
pip/_vendor/requests/packages/urllib3/util/timeout.pyc,,
pip/_vendor/_markerlib/markers.pyc,,
pip/utils/__init__.pyc,,
pip/_vendor/requests/packages/urllib3/_collections.pyc,,
pip/_vendor/requests/packages/urllib3/util/request.pyc,,
pip/_vendor/ipaddress.pyc,,
pip/_vendor/distlib/manifest.pyc,,
pip/_vendor/html5lib/serializer/htmlserializer.pyc,,
pip/_vendor/html5lib/serializer/__init__.pyc,,
pip/_vendor/html5lib/trie/_base.pyc,,
pip/_vendor/requests/packages/urllib3/response.pyc,,
pip/req/req_install.pyc,,
pip/_vendor/html5lib/treeadapters/__init__.pyc,,
pip/_vendor/cachecontrol/caches/redis_cache.pyc,,
pip/_vendor/html5lib/filters/inject_meta_charset.pyc,,
pip/_vendor/requests/packages/chardet/charsetprober.pyc,,
pip/_vendor/requests/packages/urllib3/util/retry.pyc,,
pip/vcs/mercurial.pyc,,
pip/_vendor/cachecontrol/__init__.pyc,,
pip/_vendor/__init__.pyc,,
pip/_vendor/requests/packages/chardet/universaldetector.pyc,,
pip/_vendor/html5lib/constants.pyc,,
pip/_vendor/html5lib/treewalkers/lxmletree.pyc,,
pip/_vendor/colorama/ansi.pyc,,
pip/commands/install.pyc,,
pip/_vendor/requests/packages/chardet/gb2312prober.pyc,,
pip/_vendor/requests/packages/urllib3/contrib/pyopenssl.pyc,,
pip/_vendor/pkg_resources/tests/__init__.pyc,,
pip/_vendor/progress/bar.pyc,,
pip/wheel.pyc,,
pip/_vendor/lockfile/pidlockfile.pyc,,
pip/_vendor/requests/__init__.pyc,,
pip/_vendor/requests/packages/chardet/chardetect.pyc,,
pip/_vendor/html5lib/filters/optionaltags.pyc,,
pip/_vendor/requests/packages/urllib3/connection.pyc,,
pip/utils/appdirs.pyc,,
pip/_vendor/colorama/winterm.pyc,,

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Wheel-Version: 1.0
Generator: bdist_wheel (0.24.0)
Root-Is-Purelib: true
Tag: py2-none-any
Tag: py3-none-any

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[console_scripts]
pip = pip:main
pip3 = pip:main
pip3.4 = pip:main

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pip

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#!/usr/bin/env python
from __future__ import absolute_import
import logging
import os
import optparse
import warnings
import sys
import re
from pip.exceptions import InstallationError, CommandError, PipError
from pip.utils import get_installed_distributions, get_prog
from pip.utils import deprecation
from pip.vcs import git, mercurial, subversion, bazaar # noqa
from pip.baseparser import ConfigOptionParser, UpdatingDefaultsHelpFormatter
from pip.commands import get_summaries, get_similar_commands
from pip.commands import commands_dict
from pip._vendor.requests.packages.urllib3.exceptions import (
InsecureRequestWarning,
)
# assignment for flake8 to be happy
# This fixes a peculiarity when importing via __import__ - as we are
# initialising the pip module, "from pip import cmdoptions" is recursive
# and appears not to work properly in that situation.
import pip.cmdoptions
cmdoptions = pip.cmdoptions
# The version as used in the setup.py and the docs conf.py
__version__ = "6.1.1"
logger = logging.getLogger(__name__)
# Hide the InsecureRequestWArning from urllib3
warnings.filterwarnings("ignore", category=InsecureRequestWarning)
def autocomplete():
"""Command and option completion for the main option parser (and options)
and its subcommands (and options).
Enable by sourcing one of the completion shell scripts (bash or zsh).
"""
# Don't complete if user hasn't sourced bash_completion file.
if 'PIP_AUTO_COMPLETE' not in os.environ:
return
cwords = os.environ['COMP_WORDS'].split()[1:]
cword = int(os.environ['COMP_CWORD'])
try:
current = cwords[cword - 1]
except IndexError:
current = ''
subcommands = [cmd for cmd, summary in get_summaries()]
options = []
# subcommand
try:
subcommand_name = [w for w in cwords if w in subcommands][0]
except IndexError:
subcommand_name = None
parser = create_main_parser()
# subcommand options
if subcommand_name:
# special case: 'help' subcommand has no options
if subcommand_name == 'help':
sys.exit(1)
# special case: list locally installed dists for uninstall command
if subcommand_name == 'uninstall' and not current.startswith('-'):
installed = []
lc = current.lower()
for dist in get_installed_distributions(local_only=True):
if dist.key.startswith(lc) and dist.key not in cwords[1:]:
installed.append(dist.key)
# if there are no dists installed, fall back to option completion
if installed:
for dist in installed:
print(dist)
sys.exit(1)
subcommand = commands_dict[subcommand_name]()
options += [(opt.get_opt_string(), opt.nargs)
for opt in subcommand.parser.option_list_all
if opt.help != optparse.SUPPRESS_HELP]
# filter out previously specified options from available options
prev_opts = [x.split('=')[0] for x in cwords[1:cword - 1]]
options = [(x, v) for (x, v) in options if x not in prev_opts]
# filter options by current input
options = [(k, v) for k, v in options if k.startswith(current)]
for option in options:
opt_label = option[0]
# append '=' to options which require args
if option[1]:
opt_label += '='
print(opt_label)
else:
# show main parser options only when necessary
if current.startswith('-') or current.startswith('--'):
opts = [i.option_list for i in parser.option_groups]
opts.append(parser.option_list)
opts = (o for it in opts for o in it)
subcommands += [i.get_opt_string() for i in opts
if i.help != optparse.SUPPRESS_HELP]
print(' '.join([x for x in subcommands if x.startswith(current)]))
sys.exit(1)
def create_main_parser():
parser_kw = {
'usage': '\n%prog <command> [options]',
'add_help_option': False,
'formatter': UpdatingDefaultsHelpFormatter(),
'name': 'global',
'prog': get_prog(),
}
parser = ConfigOptionParser(**parser_kw)
parser.disable_interspersed_args()
pip_pkg_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
parser.version = 'pip %s from %s (python %s)' % (
__version__, pip_pkg_dir, sys.version[:3])
# add the general options
gen_opts = cmdoptions.make_option_group(cmdoptions.general_group, parser)
parser.add_option_group(gen_opts)
parser.main = True # so the help formatter knows
# create command listing for description
command_summaries = get_summaries()
description = [''] + ['%-27s %s' % (i, j) for i, j in command_summaries]
parser.description = '\n'.join(description)
return parser
def parseopts(args):
parser = create_main_parser()
# Note: parser calls disable_interspersed_args(), so the result of this
# call is to split the initial args into the general options before the
# subcommand and everything else.
# For example:
# args: ['--timeout=5', 'install', '--user', 'INITools']
# general_options: ['--timeout==5']
# args_else: ['install', '--user', 'INITools']
general_options, args_else = parser.parse_args(args)
# --version
if general_options.version:
sys.stdout.write(parser.version)
sys.stdout.write(os.linesep)
sys.exit()
# pip || pip help -> print_help()
if not args_else or (args_else[0] == 'help' and len(args_else) == 1):
parser.print_help()
sys.exit()
# the subcommand name
cmd_name = args_else[0]
if cmd_name not in commands_dict:
guess = get_similar_commands(cmd_name)
msg = ['unknown command "%s"' % cmd_name]
if guess:
msg.append('maybe you meant "%s"' % guess)
raise CommandError(' - '.join(msg))
# all the args without the subcommand
cmd_args = args[:]
cmd_args.remove(cmd_name)
return cmd_name, cmd_args
def check_isolated(args):
isolated = False
if "--isolated" in args:
isolated = True
return isolated
def main(args=None):
if args is None:
args = sys.argv[1:]
# Enable our Deprecation Warnings
for deprecation_warning in deprecation.DEPRECATIONS:
warnings.simplefilter("default", deprecation_warning)
# Configure our deprecation warnings to be sent through loggers
deprecation.install_warning_logger()
autocomplete()
try:
cmd_name, cmd_args = parseopts(args)
except PipError as exc:
sys.stderr.write("ERROR: %s" % exc)
sys.stderr.write(os.linesep)
sys.exit(1)
command = commands_dict[cmd_name](isolated=check_isolated(cmd_args))
return command.main(cmd_args)
# ###########################################################
# # Writing freeze files
class FrozenRequirement(object):
def __init__(self, name, req, editable, comments=()):
self.name = name
self.req = req
self.editable = editable
self.comments = comments
_rev_re = re.compile(r'-r(\d+)$')
_date_re = re.compile(r'-(20\d\d\d\d\d\d)$')
@classmethod
def from_dist(cls, dist, dependency_links, find_tags=False):
location = os.path.normcase(os.path.abspath(dist.location))
comments = []
from pip.vcs import vcs, get_src_requirement
if vcs.get_backend_name(location):
editable = True
try:
req = get_src_requirement(dist, location, find_tags)
except InstallationError as exc:
logger.warning(
"Error when trying to get requirement for VCS system %s, "
"falling back to uneditable format", exc
)
req = None
if req is None:
logger.warning(
'Could not determine repository location of %s', location
)
comments.append(
'## !! Could not determine repository location'
)
req = dist.as_requirement()
editable = False
else:
editable = False
req = dist.as_requirement()
specs = req.specs
assert len(specs) == 1 and specs[0][0] in ["==", "==="], \
'Expected 1 spec with == or ===; specs = %r; dist = %r' % \
(specs, dist)
version = specs[0][1]
ver_match = cls._rev_re.search(version)
date_match = cls._date_re.search(version)
if ver_match or date_match:
svn_backend = vcs.get_backend('svn')
if svn_backend:
svn_location = svn_backend().get_location(
dist,
dependency_links,
)
if not svn_location:
logger.warning(
'Warning: cannot find svn location for %s', req)
comments.append(
'## FIXME: could not find svn URL in dependency_links '
'for this package:'
)
else:
comments.append(
'# Installing as editable to satisfy requirement %s:' %
req
)
if ver_match:
rev = ver_match.group(1)
else:
rev = '{%s}' % date_match.group(1)
editable = True
req = '%s@%s#egg=%s' % (
svn_location,
rev,
cls.egg_name(dist)
)
return cls(dist.project_name, req, editable, comments)
@staticmethod
def egg_name(dist):
name = dist.egg_name()
match = re.search(r'-py\d\.\d$', name)
if match:
name = name[:match.start()]
return name
def __str__(self):
req = self.req
if self.editable:
req = '-e %s' % req
return '\n'.join(list(self.comments) + [str(req)]) + '\n'
if __name__ == '__main__':
sys.exit(main())

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from __future__ import absolute_import
import os
import sys
# If we are running from a wheel, add the wheel to sys.path
# This allows the usage python pip-*.whl/pip install pip-*.whl
if __package__ == '':
# __file__ is pip-*.whl/pip/__main__.py
# first dirname call strips of '/__main__.py', second strips off '/pip'
# Resulting path is the name of the wheel itself
# Add that to sys.path so we can import pip
path = os.path.dirname(os.path.dirname(__file__))
sys.path.insert(0, path)
import pip # noqa
if __name__ == '__main__':
sys.exit(pip.main())

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"""
pip._vendor is for vendoring dependencies of pip to prevent needing pip to
depend on something external.
Files inside of pip._vendor should be considered immutable and should only be
updated to versions from upstream.
"""
from __future__ import absolute_import
import glob
import os.path
import sys
# By default, look in this directory for a bunch of .whl files which we will
# add to the beginning of sys.path before attempting to import anything. This
# is done to support downstream re-distributors like Debian and Fedora who
# wish to create their own Wheels for our dependencies to aid in debundling.
WHEEL_DIR = os.path.abspath(os.path.dirname(__file__))
# Actually look inside of WHEEL_DIR to find .whl files and add them to the
# front of our sys.path.
sys.path = glob.glob(os.path.join(WHEEL_DIR, "*.whl")) + sys.path
class VendorAlias(object):
def __init__(self, package_names):
self._package_names = package_names
self._vendor_name = __name__
self._vendor_pkg = self._vendor_name + "."
self._vendor_pkgs = [
self._vendor_pkg + name for name in self._package_names
]
def find_module(self, fullname, path=None):
if fullname.startswith(self._vendor_pkg):
return self
def load_module(self, name):
# Ensure that this only works for the vendored name
if not name.startswith(self._vendor_pkg):
raise ImportError(
"Cannot import %s, must be a subpackage of '%s'." % (
name, self._vendor_name,
)
)
if not (name == self._vendor_name or
any(name.startswith(pkg) for pkg in self._vendor_pkgs)):
raise ImportError(
"Cannot import %s, must be one of %s." % (
name, self._vendor_pkgs
)
)
# Check to see if we already have this item in sys.modules, if we do
# then simply return that.
if name in sys.modules:
return sys.modules[name]
# Check to see if we can import the vendor name
try:
# We do this dance here because we want to try and import this
# module without hitting a recursion error because of a bunch of
# VendorAlias instances on sys.meta_path
real_meta_path = sys.meta_path[:]
try:
sys.meta_path = [
m for m in sys.meta_path
if not isinstance(m, VendorAlias)
]
__import__(name)
module = sys.modules[name]
finally:
# Re-add any additions to sys.meta_path that were made while
# during the import we just did, otherwise things like
# pip._vendor.six.moves will fail.
for m in sys.meta_path:
if m not in real_meta_path:
real_meta_path.append(m)
# Restore sys.meta_path with any new items.
sys.meta_path = real_meta_path
except ImportError:
# We can't import the vendor name, so we'll try to import the
# "real" name.
real_name = name[len(self._vendor_pkg):]
try:
__import__(real_name)
module = sys.modules[real_name]
except ImportError:
raise ImportError("No module named '%s'" % (name,))
# If we've gotten here we've found the module we're looking for, either
# as part of our vendored package, or as the real name, so we'll add
# it to sys.modules as the vendored name so that we don't have to do
# the lookup again.
sys.modules[name] = module
# Finally, return the loaded module
return module
sys.meta_path.append(VendorAlias([
"_markerlib", "cachecontrol", "certifi", "colorama", "distlib", "html5lib",
"ipaddress", "lockfile", "packaging", "pkg_resources", "progress",
"requests", "retrying", "six",
]))

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panda/python/Lib/site-packages/pip/_vendor/_markerlib/__init__.py Normal file
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try:
import ast
from pip._vendor._markerlib.markers import default_environment, compile, interpret
except ImportError:
if 'ast' in globals():
raise
def default_environment():
return {}
def compile(marker):
def marker_fn(environment=None, override=None):
# 'empty markers are True' heuristic won't install extra deps.
return not marker.strip()
marker_fn.__doc__ = marker
return marker_fn
def interpret(marker, environment=None, override=None):
return compile(marker)()

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# -*- coding: utf-8 -*-
"""Interpret PEP 345 environment markers.
EXPR [in|==|!=|not in] EXPR [or|and] ...
where EXPR belongs to any of those:
python_version = '%s.%s' % (sys.version_info[0], sys.version_info[1])
python_full_version = sys.version.split()[0]
os.name = os.name
sys.platform = sys.platform
platform.version = platform.version()
platform.machine = platform.machine()
platform.python_implementation = platform.python_implementation()
a free string, like '2.6', or 'win32'
"""
__all__ = ['default_environment', 'compile', 'interpret']
import ast
import os
import platform
import sys
import weakref
_builtin_compile = compile
try:
from platform import python_implementation
except ImportError:
if os.name == "java":
# Jython 2.5 has ast module, but not platform.python_implementation() function.
def python_implementation():
return "Jython"
else:
raise
# restricted set of variables
_VARS = {'sys.platform': sys.platform,
'python_version': '%s.%s' % sys.version_info[:2],
# FIXME parsing sys.platform is not reliable, but there is no other
# way to get e.g. 2.7.2+, and the PEP is defined with sys.version
'python_full_version': sys.version.split(' ', 1)[0],
'os.name': os.name,
'platform.version': platform.version(),
'platform.machine': platform.machine(),
'platform.python_implementation': python_implementation(),
'extra': None # wheel extension
}
for var in list(_VARS.keys()):
if '.' in var:
_VARS[var.replace('.', '_')] = _VARS[var]
def default_environment():
"""Return copy of default PEP 385 globals dictionary."""
return dict(_VARS)
class ASTWhitelist(ast.NodeTransformer):
def __init__(self, statement):
self.statement = statement # for error messages
ALLOWED = (ast.Compare, ast.BoolOp, ast.Attribute, ast.Name, ast.Load, ast.Str)
# Bool operations
ALLOWED += (ast.And, ast.Or)
# Comparison operations
ALLOWED += (ast.Eq, ast.Gt, ast.GtE, ast.In, ast.Is, ast.IsNot, ast.Lt, ast.LtE, ast.NotEq, ast.NotIn)
def visit(self, node):
"""Ensure statement only contains allowed nodes."""
if not isinstance(node, self.ALLOWED):
raise SyntaxError('Not allowed in environment markers.\n%s\n%s' %
(self.statement,
(' ' * node.col_offset) + '^'))
return ast.NodeTransformer.visit(self, node)
def visit_Attribute(self, node):
"""Flatten one level of attribute access."""
new_node = ast.Name("%s.%s" % (node.value.id, node.attr), node.ctx)
return ast.copy_location(new_node, node)
def parse_marker(marker):
tree = ast.parse(marker, mode='eval')
new_tree = ASTWhitelist(marker).generic_visit(tree)
return new_tree
def compile_marker(parsed_marker):
return _builtin_compile(parsed_marker, '<environment marker>', 'eval',
dont_inherit=True)
_cache = weakref.WeakValueDictionary()
def compile(marker):
"""Return compiled marker as a function accepting an environment dict."""
try:
return _cache[marker]
except KeyError:
pass
if not marker.strip():
def marker_fn(environment=None, override=None):
""""""
return True
else:
compiled_marker = compile_marker(parse_marker(marker))
def marker_fn(environment=None, override=None):
"""override updates environment"""
if override is None:
override = {}
if environment is None:
environment = default_environment()
environment.update(override)
return eval(compiled_marker, environment)
marker_fn.__doc__ = marker
_cache[marker] = marker_fn
return _cache[marker]
def interpret(marker, environment=None):
return compile(marker)(environment)

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panda/python/Lib/site-packages/pip/_vendor/cachecontrol/__init__.py Normal file
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"""CacheControl import Interface.
Make it easy to import from cachecontrol without long namespaces.
"""
__author__ = 'Eric Larson'
__email__ = 'eric@ionrock.org'
__version__ = '0.11.2'
from .wrapper import CacheControl
from .adapter import CacheControlAdapter
from .controller import CacheController

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import functools
from pip._vendor.requests.adapters import HTTPAdapter
from .controller import CacheController
from .cache import DictCache
from .filewrapper import CallbackFileWrapper
class CacheControlAdapter(HTTPAdapter):
invalidating_methods = set(['PUT', 'DELETE'])
def __init__(self, cache=None,
cache_etags=True,
controller_class=None,
serializer=None,
heuristic=None,
*args, **kw):
super(CacheControlAdapter, self).__init__(*args, **kw)
self.cache = cache or DictCache()
self.heuristic = heuristic
controller_factory = controller_class or CacheController
self.controller = controller_factory(
self.cache,
cache_etags=cache_etags,
serializer=serializer,
)
def send(self, request, **kw):
"""
Send a request. Use the request information to see if it
exists in the cache and cache the response if we need to and can.
"""
if request.method == 'GET':
cached_response = self.controller.cached_request(request)
if cached_response:
return self.build_response(request, cached_response,
from_cache=True)
# check for etags and add headers if appropriate
request.headers.update(
self.controller.conditional_headers(request)
)
resp = super(CacheControlAdapter, self).send(request, **kw)
return resp
def build_response(self, request, response, from_cache=False):
"""
Build a response by making a request or using the cache.
This will end up calling send and returning a potentially
cached response
"""
if not from_cache and request.method == 'GET':
# apply any expiration heuristics
if response.status == 304:
# We must have sent an ETag request. This could mean
# that we've been expired already or that we simply
# have an etag. In either case, we want to try and
# update the cache if that is the case.
cached_response = self.controller.update_cached_response(
request, response
)
if cached_response is not response:
from_cache = True
# We are done with the server response, read a
# possible response body (compliant servers will
# not return one, but we cannot be 100% sure) and
# release the connection back to the pool.
response.read(decode_content=False)
response.release_conn()
response = cached_response
# We always cache the 301 responses
elif response.status == 301:
self.controller.cache_response(request, response)
else:
# Check for any heuristics that might update headers
# before trying to cache.
if self.heuristic:
response = self.heuristic.apply(response)
# Wrap the response file with a wrapper that will cache the
# response when the stream has been consumed.
response._fp = CallbackFileWrapper(
response._fp,
functools.partial(
self.controller.cache_response,
request,
response,
)
)
resp = super(CacheControlAdapter, self).build_response(
request, response
)
# See if we should invalidate the cache.
if request.method in self.invalidating_methods and resp.ok:
cache_url = self.controller.cache_url(request.url)
self.cache.delete(cache_url)
# Give the request a from_cache attr to let people use it
resp.from_cache = from_cache
return resp
def close(self):
self.cache.close()
super(CacheControlAdapter, self).close()

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"""
The cache object API for implementing caches. The default is a thread
safe in-memory dictionary.
"""
from threading import Lock
class BaseCache(object):
def get(self, key):
raise NotImplemented()
def set(self, key, value):
raise NotImplemented()
def delete(self, key):
raise NotImplemented()
def close(self):
pass
class DictCache(BaseCache):
def __init__(self, init_dict=None):
self.lock = Lock()
self.data = init_dict or {}
def get(self, key):
return self.data.get(key, None)
def set(self, key, value):
with self.lock:
self.data.update({key: value})
def delete(self, key):
with self.lock:
if key in self.data:
self.data.pop(key)

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from textwrap import dedent
try:
from .file_cache import FileCache
except ImportError:
notice = dedent('''
NOTE: In order to use the FileCache you must have
lockfile installed. You can install it via pip:
pip install lockfile
''')
print(notice)
try:
import redis
from .redis_cache import RedisCache
except ImportError:
pass

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import hashlib
import os
from pip._vendor.lockfile import FileLock
from ..cache import BaseCache
from ..controller import CacheController
def _secure_open_write(filename, fmode):
# We only want to write to this file, so open it in write only mode
flags = os.O_WRONLY
# os.O_CREAT | os.O_EXCL will fail if the file already exists, so we only
# will open *new* files.
# We specify this because we want to ensure that the mode we pass is the
# mode of the file.
flags |= os.O_CREAT | os.O_EXCL
# Do not follow symlinks to prevent someone from making a symlink that
# we follow and insecurely open a cache file.
if hasattr(os, "O_NOFOLLOW"):
flags |= os.O_NOFOLLOW
# On Windows we'll mark this file as binary
if hasattr(os, "O_BINARY"):
flags |= os.O_BINARY
# Before we open our file, we want to delete any existing file that is
# there
try:
os.remove(filename)
except (IOError, OSError):
# The file must not exist already, so we can just skip ahead to opening
pass
# Open our file, the use of os.O_CREAT | os.O_EXCL will ensure that if a
# race condition happens between the os.remove and this line, that an
# error will be raised. Because we utilize a lockfile this should only
# happen if someone is attempting to attack us.
fd = os.open(filename, flags, fmode)
try:
return os.fdopen(fd, "wb")
except:
# An error occurred wrapping our FD in a file object
os.close(fd)
raise
class FileCache(BaseCache):
def __init__(self, directory, forever=False, filemode=0o0600,
dirmode=0o0700):
self.directory = directory
self.forever = forever
self.filemode = filemode
self.dirmode = dirmode
@staticmethod
def encode(x):
return hashlib.sha224(x.encode()).hexdigest()
def _fn(self, name):
# NOTE: This method should not change as some may depend on it.
# See: https://github.com/ionrock/cachecontrol/issues/63
hashed = self.encode(name)
parts = list(hashed[:5]) + [hashed]
return os.path.join(self.directory, *parts)
def get(self, key):
name = self._fn(key)
if not os.path.exists(name):
return None
with open(name, 'rb') as fh:
return fh.read()
def set(self, key, value):
name = self._fn(key)
# Make sure the directory exists
try:
os.makedirs(os.path.dirname(name), self.dirmode)
except (IOError, OSError):
pass
with FileLock(name) as lock:
# Write our actual file
with _secure_open_write(lock.path, self.filemode) as fh:
fh.write(value)
def delete(self, key):
name = self._fn(key)
if not self.forever:
os.remove(name)
def url_to_file_path(url, filecache):
"""Return the file cache path based on the URL.
This does not ensure the file exists!
"""
key = CacheController.cache_url(url)
return filecache._fn(key)

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from __future__ import division
from datetime import datetime
def total_seconds(td):
"""Python 2.6 compatability"""
if hasattr(td, 'total_seconds'):
return td.total_seconds()
ms = td.microseconds
secs = (td.seconds + td.days * 24 * 3600)
return (ms + secs * 10**6) / 10**6
class RedisCache(object):
def __init__(self, conn):
self.conn = conn
def get(self, key):
return self.conn.get(key)
def set(self, key, value, expires=None):
if not expires:
self.conn.set(key, value)
else:
expires = expires - datetime.now()
self.conn.setex(key, total_seconds(expires), value)
def delete(self, key):
self.conn.delete(key)
def clear(self):
"""Helper for clearing all the keys in a database. Use with
caution!"""
for key in self.conn.keys():
self.conn.delete(key)
def close(self):
self.conn.disconnect()

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try:
from urllib.parse import urljoin
except ImportError:
from urlparse import urljoin
try:
import cPickle as pickle
except ImportError:
import pickle
from pip._vendor.requests.packages.urllib3.response import HTTPResponse
from pip._vendor.requests.packages.urllib3.util import is_fp_closed

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"""
The httplib2 algorithms ported for use with requests.
"""
import re
import calendar
import time
from email.utils import parsedate_tz
from pip._vendor.requests.structures import CaseInsensitiveDict
from .cache import DictCache
from .serialize import Serializer
URI = re.compile(r"^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?")
def parse_uri(uri):
"""Parses a URI using the regex given in Appendix B of RFC 3986.
(scheme, authority, path, query, fragment) = parse_uri(uri)
"""
groups = URI.match(uri).groups()
return (groups[1], groups[3], groups[4], groups[6], groups[8])
class CacheController(object):
"""An interface to see if request should cached or not.
"""
def __init__(self, cache=None, cache_etags=True, serializer=None):
self.cache = cache or DictCache()
self.cache_etags = cache_etags
self.serializer = serializer or Serializer()
@classmethod
def _urlnorm(cls, uri):
"""Normalize the URL to create a safe key for the cache"""
(scheme, authority, path, query, fragment) = parse_uri(uri)
if not scheme or not authority:
raise Exception("Only absolute URIs are allowed. uri = %s" % uri)
scheme = scheme.lower()
authority = authority.lower()
if not path:
path = "/"
# Could do syntax based normalization of the URI before
# computing the digest. See Section 6.2.2 of Std 66.
request_uri = query and "?".join([path, query]) or path
defrag_uri = scheme + "://" + authority + request_uri
return defrag_uri
@classmethod
def cache_url(cls, uri):
return cls._urlnorm(uri)
def parse_cache_control(self, headers):
"""
Parse the cache control headers returning a dictionary with values
for the different directives.
"""
retval = {}
cc_header = 'cache-control'
if 'Cache-Control' in headers:
cc_header = 'Cache-Control'
if cc_header in headers:
parts = headers[cc_header].split(',')
parts_with_args = [
tuple([x.strip().lower() for x in part.split("=", 1)])
for part in parts if -1 != part.find("=")
]
parts_wo_args = [
(name.strip().lower(), 1)
for name in parts if -1 == name.find("=")
]
retval = dict(parts_with_args + parts_wo_args)
return retval
def cached_request(self, request):
"""
Return a cached response if it exists in the cache, otherwise
return False.
"""
cache_url = self.cache_url(request.url)
cc = self.parse_cache_control(request.headers)
# non-caching states
no_cache = True if 'no-cache' in cc else False
if 'max-age' in cc and cc['max-age'] == 0:
no_cache = True
# Bail out if no-cache was set
if no_cache:
return False
# It is in the cache, so lets see if it is going to be
# fresh enough
resp = self.serializer.loads(request, self.cache.get(cache_url))
# Check to see if we have a cached object
if not resp:
return False
# If we have a cached 301, return it immediately. We don't
# need to test our response for other headers b/c it is
# intrinsically "cacheable" as it is Permanent.
# See:
# https://tools.ietf.org/html/rfc7231#section-6.4.2
#
# Client can try to refresh the value by repeating the request
# with cache busting headers as usual (ie no-cache).
if resp.status == 301:
return resp
headers = CaseInsensitiveDict(resp.headers)
if not headers or 'date' not in headers:
# With date or etag, the cached response can never be used
# and should be deleted.
if 'etag' not in headers:
self.cache.delete(cache_url)
return False
now = time.time()
date = calendar.timegm(
parsedate_tz(headers['date'])
)
current_age = max(0, now - date)
# TODO: There is an assumption that the result will be a
# urllib3 response object. This may not be best since we
# could probably avoid instantiating or constructing the
# response until we know we need it.
resp_cc = self.parse_cache_control(headers)
# determine freshness
freshness_lifetime = 0
# Check the max-age pragma in the cache control header
if 'max-age' in resp_cc and resp_cc['max-age'].isdigit():
freshness_lifetime = int(resp_cc['max-age'])
# If there isn't a max-age, check for an expires header
elif 'expires' in headers:
expires = parsedate_tz(headers['expires'])
if expires is not None:
expire_time = calendar.timegm(expires) - date
freshness_lifetime = max(0, expire_time)
# determine if we are setting freshness limit in the req
if 'max-age' in cc:
try:
freshness_lifetime = int(cc['max-age'])
except ValueError:
freshness_lifetime = 0
if 'min-fresh' in cc:
try:
min_fresh = int(cc['min-fresh'])
except ValueError:
min_fresh = 0
# adjust our current age by our min fresh
current_age += min_fresh
# see how fresh we actually are
fresh = (freshness_lifetime > current_age)
if fresh:
return resp
# we're not fresh. If we don't have an Etag, clear it out
if 'etag' not in headers:
self.cache.delete(cache_url)
# return the original handler
return False
def conditional_headers(self, request):
cache_url = self.cache_url(request.url)
resp = self.serializer.loads(request, self.cache.get(cache_url))
new_headers = {}
if resp:
headers = CaseInsensitiveDict(resp.headers)
if 'etag' in headers:
new_headers['If-None-Match'] = headers['ETag']
if 'last-modified' in headers:
new_headers['If-Modified-Since'] = headers['Last-Modified']
return new_headers
def cache_response(self, request, response, body=None):
"""
Algorithm for caching requests.
This assumes a requests Response object.
"""
# From httplib2: Don't cache 206's since we aren't going to
# handle byte range requests
if response.status not in [200, 203, 300, 301]:
return
response_headers = CaseInsensitiveDict(response.headers)
cc_req = self.parse_cache_control(request.headers)
cc = self.parse_cache_control(response_headers)
cache_url = self.cache_url(request.url)
# Delete it from the cache if we happen to have it stored there
no_store = cc.get('no-store') or cc_req.get('no-store')
if no_store and self.cache.get(cache_url):
self.cache.delete(cache_url)
# If we've been given an etag, then keep the response
if self.cache_etags and 'etag' in response_headers:
self.cache.set(
cache_url,
self.serializer.dumps(request, response, body=body),
)
# Add to the cache any 301s. We do this before looking that
# the Date headers.
elif response.status == 301:
self.cache.set(
cache_url,
self.serializer.dumps(request, response)
)
# Add to the cache if the response headers demand it. If there
# is no date header then we can't do anything about expiring
# the cache.
elif 'date' in response_headers:
# cache when there is a max-age > 0
if cc and cc.get('max-age'):
if int(cc['max-age']) > 0:
self.cache.set(
cache_url,
self.serializer.dumps(request, response, body=body),
)
# If the request can expire, it means we should cache it
# in the meantime.
elif 'expires' in response_headers:
if response_headers['expires']:
self.cache.set(
cache_url,
self.serializer.dumps(request, response, body=body),
)
def update_cached_response(self, request, response):
"""On a 304 we will get a new set of headers that we want to
update our cached value with, assuming we have one.
This should only ever be called when we've sent an ETag and
gotten a 304 as the response.
"""
cache_url = self.cache_url(request.url)
cached_response = self.serializer.loads(
request,
self.cache.get(cache_url)
)
if not cached_response:
# we didn't have a cached response
return response
# Lets update our headers with the headers from the new request:
# http://tools.ietf.org/html/draft-ietf-httpbis-p4-conditional-26#section-4.1
#
# The server isn't supposed to send headers that would make
# the cached body invalid. But... just in case, we'll be sure
# to strip out ones we know that might be problmatic due to
# typical assumptions.
excluded_headers = [
"content-length",
]
cached_response.headers.update(
dict((k, v) for k, v in response.headers.items()
if k.lower() not in excluded_headers)
)
# we want a 200 b/c we have content via the cache
cached_response.status = 200
# update our cache
self.cache.set(
cache_url,
self.serializer.dumps(request, cached_response),
)
return cached_response

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from io import BytesIO
class CallbackFileWrapper(object):
"""
Small wrapper around a fp object which will tee everything read into a
buffer, and when that file is closed it will execute a callback with the
contents of that buffer.
All attributes are proxied to the underlying file object.
This class uses members with a double underscore (__) leading prefix so as
not to accidentally shadow an attribute.
"""
def __init__(self, fp, callback):
self.__buf = BytesIO()
self.__fp = fp
self.__callback = callback
def __getattr__(self, name):
# The vaguaries of garbage collection means that self.__fp is
# not always set. By using __getattribute__ and the private
# name[0] allows looking up the attribute value and raising an
# AttributeError when it doesn't exist. This stop thigns from
# infinitely recursing calls to getattr in the case where
# self.__fp hasn't been set.
#
# [0] https://docs.python.org/2/reference/expressions.html#atom-identifiers
fp = self.__getattribute__('_CallbackFileWrapper__fp')
return getattr(fp, name)
def __is_fp_closed(self):
try:
return self.__fp.fp is None
except AttributeError:
pass
try:
return self.__fp.closed
except AttributeError:
pass
# We just don't cache it then.
# TODO: Add some logging here...
return False
def read(self, amt=None):
data = self.__fp.read(amt)
self.__buf.write(data)
if self.__is_fp_closed():
if self.__callback:
self.__callback(self.__buf.getvalue())
# We assign this to None here, because otherwise we can get into
# really tricky problems where the CPython interpreter dead locks
# because the callback is holding a reference to something which
# has a __del__ method. Setting this to None breaks the cycle
# and allows the garbage collector to do it's thing normally.
self.__callback = None
return data

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import calendar
import time
from email.utils import formatdate, parsedate, parsedate_tz
from datetime import datetime, timedelta
TIME_FMT = "%a, %d %b %Y %H:%M:%S GMT"
def expire_after(delta, date=None):
date = date or datetime.now()
return date + delta
def datetime_to_header(dt):
return formatdate(calendar.timegm(dt.timetuple()))
class BaseHeuristic(object):
def warning(self, response):
"""
Return a valid 1xx warning header value describing the cache
adjustments.
The response is provided too allow warnings like 113
http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need
to explicitly say response is over 24 hours old.
"""
return '110 - "Response is Stale"'
def update_headers(self, response):
"""Update the response headers with any new headers.
NOTE: This SHOULD always include some Warning header to
signify that the response was cached by the client, not
by way of the provided headers.
"""
return {}
def apply(self, response):
warning_header_value = self.warning(response)
response.headers.update(self.update_headers(response))
if warning_header_value is not None:
response.headers.update({'Warning': warning_header_value})
return response
class OneDayCache(BaseHeuristic):
"""
Cache the response by providing an expires 1 day in the
future.
"""
def update_headers(self, response):
headers = {}
if 'expires' not in response.headers:
date = parsedate(response.headers['date'])
expires = expire_after(timedelta(days=1),
date=datetime(*date[:6]))
headers['expires'] = datetime_to_header(expires)
headers['cache-control'] = 'public'
return headers
class ExpiresAfter(BaseHeuristic):
"""
Cache **all** requests for a defined time period.
"""
def __init__(self, **kw):
self.delta = timedelta(**kw)
def update_headers(self, response):
expires = expire_after(self.delta)
return {
'expires': datetime_to_header(expires),
'cache-control': 'public',
}
def warning(self, response):
tmpl = '110 - Automatically cached for %s. Response might be stale'
return tmpl % self.delta
class LastModified(BaseHeuristic):
"""
If there is no Expires header already, fall back on Last-Modified
using the heuristic from
http://tools.ietf.org/html/rfc7234#section-4.2.2
to calculate a reasonable value.
Firefox also does something like this per
https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ
http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397
Unlike mozilla we limit this to 24-hr.
"""
cacheable_by_default_statuses = set([
200, 203, 204, 206, 300, 301, 404, 405, 410, 414, 501
])
def update_headers(self, resp):
headers = resp.headers
if 'expires' in headers:
return {}
if 'cache-control' in headers and headers['cache-control'] != 'public':
return {}
if resp.status not in self.cacheable_by_default_statuses:
return {}
if 'date' not in headers or 'last-modified' not in headers:
return {}
date = calendar.timegm(parsedate_tz(headers['date']))
last_modified = parsedate(headers['last-modified'])
if date is None or last_modified is None:
return {}
now = time.time()
current_age = max(0, now - date)
delta = date - calendar.timegm(last_modified)
freshness_lifetime = max(0, min(delta / 10, 24 * 3600))
if freshness_lifetime <= current_age:
return {}
expires = date + freshness_lifetime
return {'expires': time.strftime(TIME_FMT, time.gmtime(expires))}
def warning(self, resp):
return None

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import base64
import io
import json
import zlib
from pip._vendor.requests.structures import CaseInsensitiveDict
from .compat import HTTPResponse, pickle
def _b64_encode_bytes(b):
return base64.b64encode(b).decode("ascii")
def _b64_encode_str(s):
return _b64_encode_bytes(s.encode("utf8"))
def _b64_decode_bytes(b):
return base64.b64decode(b.encode("ascii"))
def _b64_decode_str(s):
return _b64_decode_bytes(s).decode("utf8")
class Serializer(object):
def dumps(self, request, response, body=None):
response_headers = CaseInsensitiveDict(response.headers)
if body is None:
body = response.read(decode_content=False)
# NOTE: 99% sure this is dead code. I'm only leaving it
# here b/c I don't have a test yet to prove
# it. Basically, before using
# `cachecontrol.filewrapper.CallbackFileWrapper`,
# this made an effort to reset the file handle. The
# `CallbackFileWrapper` short circuits this code by
# setting the body as the content is consumed, the
# result being a `body` argument is *always* passed
# into cache_response, and in turn,
# `Serializer.dump`.
response._fp = io.BytesIO(body)
data = {
"response": {
"body": _b64_encode_bytes(body),
"headers": dict(
(_b64_encode_str(k), _b64_encode_str(v))
for k, v in response.headers.items()
),
"status": response.status,
"version": response.version,
"reason": _b64_encode_str(response.reason),
"strict": response.strict,
"decode_content": response.decode_content,
},
}
# Construct our vary headers
data["vary"] = {}
if "vary" in response_headers:
varied_headers = response_headers['vary'].split(',')
for header in varied_headers:
header = header.strip()
data["vary"][header] = request.headers.get(header, None)
# Encode our Vary headers to ensure they can be serialized as JSON
data["vary"] = dict(
(_b64_encode_str(k), _b64_encode_str(v) if v is not None else v)
for k, v in data["vary"].items()
)
return b",".join([
b"cc=2",
zlib.compress(
json.dumps(
data, separators=(",", ":"), sort_keys=True,
).encode("utf8"),
),
])
def loads(self, request, data):
# Short circuit if we've been given an empty set of data
if not data:
return
# Determine what version of the serializer the data was serialized
# with
try:
ver, data = data.split(b",", 1)
except ValueError:
ver = b"cc=0"
# Make sure that our "ver" is actually a version and isn't a false
# positive from a , being in the data stream.
if ver[:3] != b"cc=":
data = ver + data
ver = b"cc=0"
# Get the version number out of the cc=N
ver = ver.split(b"=", 1)[-1].decode("ascii")
# Dispatch to the actual load method for the given version
try:
return getattr(self, "_loads_v{0}".format(ver))(request, data)
except AttributeError:
# This is a version we don't have a loads function for, so we'll
# just treat it as a miss and return None
return
def prepare_response(self, request, cached):
"""Verify our vary headers match and construct a real urllib3
HTTPResponse object.
"""
# Special case the '*' Vary value as it means we cannot actually
# determine if the cached response is suitable for this request.
if "*" in cached.get("vary", {}):
return
# Ensure that the Vary headers for the cached response match our
# request
for header, value in cached.get("vary", {}).items():
if request.headers.get(header, None) != value:
return
body_raw = cached["response"].pop("body")
try:
body = io.BytesIO(body_raw)
except TypeError:
# This can happen if cachecontrol serialized to v1 format (pickle)
# using Python 2. A Python 2 str(byte string) will be unpickled as
# a Python 3 str (unicode string), which will cause the above to
# fail with:
#
# TypeError: 'str' does not support the buffer interface
body = io.BytesIO(body_raw.encode('utf8'))
return HTTPResponse(
body=body,
preload_content=False,
**cached["response"]
)
def _loads_v0(self, request, data):
# The original legacy cache data. This doesn't contain enough
# information to construct everything we need, so we'll treat this as
# a miss.
return
def _loads_v1(self, request, data):
try:
cached = pickle.loads(data)
except ValueError:
return
return self.prepare_response(request, cached)
def _loads_v2(self, request, data):
try:
cached = json.loads(zlib.decompress(data).decode("utf8"))
except ValueError:
return
# We need to decode the items that we've base64 encoded
cached["response"]["body"] = _b64_decode_bytes(
cached["response"]["body"]
)
cached["response"]["headers"] = dict(
(_b64_decode_str(k), _b64_decode_str(v))
for k, v in cached["response"]["headers"].items()
)
cached["response"]["reason"] = _b64_decode_str(
cached["response"]["reason"],
)
cached["vary"] = dict(
(_b64_decode_str(k), _b64_decode_str(v) if v is not None else v)
for k, v in cached["vary"].items()
)
return self.prepare_response(request, cached)

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from .adapter import CacheControlAdapter
from .cache import DictCache
def CacheControl(sess,
cache=None,
cache_etags=True,
serializer=None,
heuristic=None):
cache = cache or DictCache()
adapter = CacheControlAdapter(
cache,
cache_etags=cache_etags,
serializer=serializer,
heuristic=heuristic,
)
sess.mount('http://', adapter)
sess.mount('https://', adapter)
return sess

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# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
from .initialise import init, deinit, reinit
from .ansi import Fore, Back, Style, Cursor
from .ansitowin32 import AnsiToWin32
__version__ = '0.3.3'

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# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
'''
This module generates ANSI character codes to printing colors to terminals.
See: http://en.wikipedia.org/wiki/ANSI_escape_code
'''
CSI = '\033['
OSC = '\033]'
BEL = '\007'
def code_to_chars(code):
return CSI + str(code) + 'm'
class AnsiCodes(object):
def __init__(self, codes):
for name in dir(codes):
if not name.startswith('_'):
value = getattr(codes, name)
setattr(self, name, code_to_chars(value))
class AnsiCursor(object):
def UP(self, n=1):
return CSI + str(n) + "A"
def DOWN(self, n=1):
return CSI + str(n) + "B"
def FORWARD(self, n=1):
return CSI + str(n) + "C"
def BACK(self, n=1):
return CSI + str(n) + "D"
def POS(self, x=1, y=1):
return CSI + str(y) + ";" + str(x) + "H"
def set_title(title):
return OSC + "2;" + title + BEL
def clear_screen(mode=2):
return CSI + str(mode) + "J"
def clear_line(mode=2):
return CSI + str(mode) + "K"
class AnsiFore:
BLACK = 30
RED = 31
GREEN = 32
YELLOW = 33
BLUE = 34
MAGENTA = 35
CYAN = 36
WHITE = 37
RESET = 39
# These are fairly well supported, but not part of the standard.
LIGHTBLACK_EX = 90
LIGHTRED_EX = 91
LIGHTGREEN_EX = 92
LIGHTYELLOW_EX = 93
LIGHTBLUE_EX = 94
LIGHTMAGENTA_EX = 95
LIGHTCYAN_EX = 96
LIGHTWHITE_EX = 97
class AnsiBack:
BLACK = 40
RED = 41
GREEN = 42
YELLOW = 43
BLUE = 44
MAGENTA = 45
CYAN = 46
WHITE = 47
RESET = 49
# These are fairly well supported, but not part of the standard.
LIGHTBLACK_EX = 100
LIGHTRED_EX = 101
LIGHTGREEN_EX = 102
LIGHTYELLOW_EX = 103
LIGHTBLUE_EX = 104
LIGHTMAGENTA_EX = 105
LIGHTCYAN_EX = 106
LIGHTWHITE_EX = 107
class AnsiStyle:
BRIGHT = 1
DIM = 2
NORMAL = 22
RESET_ALL = 0
Fore = AnsiCodes( AnsiFore )
Back = AnsiCodes( AnsiBack )
Style = AnsiCodes( AnsiStyle )
Cursor = AnsiCursor()

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# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
import re
import sys
import os
from .ansi import AnsiFore, AnsiBack, AnsiStyle, Style
from .winterm import WinTerm, WinColor, WinStyle
from .win32 import windll
winterm = None
if windll is not None:
winterm = WinTerm()
def is_a_tty(stream):
return hasattr(stream, 'isatty') and stream.isatty()
class StreamWrapper(object):
'''
Wraps a stream (such as stdout), acting as a transparent proxy for all
attribute access apart from method 'write()', which is delegated to our
Converter instance.
'''
def __init__(self, wrapped, converter):
# double-underscore everything to prevent clashes with names of
# attributes on the wrapped stream object.
self.__wrapped = wrapped
self.__convertor = converter
def __getattr__(self, name):
return getattr(self.__wrapped, name)
def write(self, text):
self.__convertor.write(text)
class AnsiToWin32(object):
'''
Implements a 'write()' method which, on Windows, will strip ANSI character
sequences from the text, and if outputting to a tty, will convert them into
win32 function calls.
'''
ANSI_CSI_RE = re.compile('\033\[((?:\d|;)*)([a-zA-Z])') # Control Sequence Introducer
ANSI_OSC_RE = re.compile('\033\]((?:.|;)*?)(\x07)') # Operating System Command
def __init__(self, wrapped, convert=None, strip=None, autoreset=False):
# The wrapped stream (normally sys.stdout or sys.stderr)
self.wrapped = wrapped
# should we reset colors to defaults after every .write()
self.autoreset = autoreset
# create the proxy wrapping our output stream
self.stream = StreamWrapper(wrapped, self)
on_windows = os.name == 'nt'
on_emulated_windows = on_windows and 'TERM' in os.environ
# should we strip ANSI sequences from our output?
if strip is None:
strip = on_windows and not on_emulated_windows
self.strip = strip
# should we should convert ANSI sequences into win32 calls?
if convert is None:
convert = on_windows and not wrapped.closed and not on_emulated_windows and is_a_tty(wrapped)
self.convert = convert
# dict of ansi codes to win32 functions and parameters
self.win32_calls = self.get_win32_calls()
# are we wrapping stderr?
self.on_stderr = self.wrapped is sys.stderr
def should_wrap(self):
'''
True if this class is actually needed. If false, then the output
stream will not be affected, nor will win32 calls be issued, so
wrapping stdout is not actually required. This will generally be
False on non-Windows platforms, unless optional functionality like
autoreset has been requested using kwargs to init()
'''
return self.convert or self.strip or self.autoreset
def get_win32_calls(self):
if self.convert and winterm:
return {
AnsiStyle.RESET_ALL: (winterm.reset_all, ),
AnsiStyle.BRIGHT: (winterm.style, WinStyle.BRIGHT),
AnsiStyle.DIM: (winterm.style, WinStyle.NORMAL),
AnsiStyle.NORMAL: (winterm.style, WinStyle.NORMAL),
AnsiFore.BLACK: (winterm.fore, WinColor.BLACK),
AnsiFore.RED: (winterm.fore, WinColor.RED),
AnsiFore.GREEN: (winterm.fore, WinColor.GREEN),
AnsiFore.YELLOW: (winterm.fore, WinColor.YELLOW),
AnsiFore.BLUE: (winterm.fore, WinColor.BLUE),
AnsiFore.MAGENTA: (winterm.fore, WinColor.MAGENTA),
AnsiFore.CYAN: (winterm.fore, WinColor.CYAN),
AnsiFore.WHITE: (winterm.fore, WinColor.GREY),
AnsiFore.RESET: (winterm.fore, ),
AnsiFore.LIGHTBLACK_EX: (winterm.fore, WinColor.BLACK, True),
AnsiFore.LIGHTRED_EX: (winterm.fore, WinColor.RED, True),
AnsiFore.LIGHTGREEN_EX: (winterm.fore, WinColor.GREEN, True),
AnsiFore.LIGHTYELLOW_EX: (winterm.fore, WinColor.YELLOW, True),
AnsiFore.LIGHTBLUE_EX: (winterm.fore, WinColor.BLUE, True),
AnsiFore.LIGHTMAGENTA_EX: (winterm.fore, WinColor.MAGENTA, True),
AnsiFore.LIGHTCYAN_EX: (winterm.fore, WinColor.CYAN, True),
AnsiFore.LIGHTWHITE_EX: (winterm.fore, WinColor.GREY, True),
AnsiBack.BLACK: (winterm.back, WinColor.BLACK),
AnsiBack.RED: (winterm.back, WinColor.RED),
AnsiBack.GREEN: (winterm.back, WinColor.GREEN),
AnsiBack.YELLOW: (winterm.back, WinColor.YELLOW),
AnsiBack.BLUE: (winterm.back, WinColor.BLUE),
AnsiBack.MAGENTA: (winterm.back, WinColor.MAGENTA),
AnsiBack.CYAN: (winterm.back, WinColor.CYAN),
AnsiBack.WHITE: (winterm.back, WinColor.GREY),
AnsiBack.RESET: (winterm.back, ),
AnsiBack.LIGHTBLACK_EX: (winterm.back, WinColor.BLACK, True),
AnsiBack.LIGHTRED_EX: (winterm.back, WinColor.RED, True),
AnsiBack.LIGHTGREEN_EX: (winterm.back, WinColor.GREEN, True),
AnsiBack.LIGHTYELLOW_EX: (winterm.back, WinColor.YELLOW, True),
AnsiBack.LIGHTBLUE_EX: (winterm.back, WinColor.BLUE, True),
AnsiBack.LIGHTMAGENTA_EX: (winterm.back, WinColor.MAGENTA, True),
AnsiBack.LIGHTCYAN_EX: (winterm.back, WinColor.CYAN, True),
AnsiBack.LIGHTWHITE_EX: (winterm.back, WinColor.GREY, True),
}
return dict()
def write(self, text):
if self.strip or self.convert:
self.write_and_convert(text)
else:
self.wrapped.write(text)
self.wrapped.flush()
if self.autoreset:
self.reset_all()
def reset_all(self):
if self.convert:
self.call_win32('m', (0,))
elif not self.wrapped.closed and is_a_tty(self.wrapped):
self.wrapped.write(Style.RESET_ALL)
def write_and_convert(self, text):
'''
Write the given text to our wrapped stream, stripping any ANSI
sequences from the text, and optionally converting them into win32
calls.
'''
cursor = 0
text = self.convert_osc(text)
for match in self.ANSI_CSI_RE.finditer(text):
start, end = match.span()
self.write_plain_text(text, cursor, start)
self.convert_ansi(*match.groups())
cursor = end
self.write_plain_text(text, cursor, len(text))
def write_plain_text(self, text, start, end):
if start < end:
self.wrapped.write(text[start:end])
self.wrapped.flush()
def convert_ansi(self, paramstring, command):
if self.convert:
params = self.extract_params(command, paramstring)
self.call_win32(command, params)
def extract_params(self, command, paramstring):
if command in 'Hf':
params = tuple(int(p) if len(p) != 0 else 1 for p in paramstring.split(';'))
while len(params) < 2:
# defaults:
params = params + (1,)
else:
params = tuple(int(p) for p in paramstring.split(';') if len(p) != 0)
if len(params) == 0:
# defaults:
if command in 'JKm':
params = (0,)
elif command in 'ABCD':
params = (1,)
return params
def call_win32(self, command, params):
if command == 'm':
for param in params:
if param in self.win32_calls:
func_args = self.win32_calls[param]
func = func_args[0]
args = func_args[1:]
kwargs = dict(on_stderr=self.on_stderr)
func(*args, **kwargs)
elif command in 'J':
winterm.erase_screen(params[0], on_stderr=self.on_stderr)
elif command in 'K':
winterm.erase_line(params[0], on_stderr=self.on_stderr)
elif command in 'Hf': # cursor position - absolute
winterm.set_cursor_position(params, on_stderr=self.on_stderr)
elif command in 'ABCD': # cursor position - relative
n = params[0]
# A - up, B - down, C - forward, D - back
x, y = {'A': (0, -n), 'B': (0, n), 'C': (n, 0), 'D': (-n, 0)}[command]
winterm.cursor_adjust(x, y, on_stderr=self.on_stderr)
def convert_osc(self, text):
for match in self.ANSI_OSC_RE.finditer(text):
start, end = match.span()
text = text[:start] + text[end:]
paramstring, command = match.groups()
if command in '\x07': # \x07 = BEL
params = paramstring.split(";")
# 0 - change title and icon (we will only change title)
# 1 - change icon (we don't support this)
# 2 - change title
if params[0] in '02':
winterm.set_title(params[1])
return text

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# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
import atexit
import sys
from .ansitowin32 import AnsiToWin32
orig_stdout = sys.stdout
orig_stderr = sys.stderr
wrapped_stdout = sys.stdout
wrapped_stderr = sys.stderr
atexit_done = False
def reset_all():
AnsiToWin32(orig_stdout).reset_all()
def init(autoreset=False, convert=None, strip=None, wrap=True):
if not wrap and any([autoreset, convert, strip]):
raise ValueError('wrap=False conflicts with any other arg=True')
global wrapped_stdout, wrapped_stderr
if sys.stdout is None:
wrapped_stdout = None
else:
sys.stdout = wrapped_stdout = \
wrap_stream(orig_stdout, convert, strip, autoreset, wrap)
if sys.stderr is None:
wrapped_stderr = None
else:
sys.stderr = wrapped_stderr = \
wrap_stream(orig_stderr, convert, strip, autoreset, wrap)
global atexit_done
if not atexit_done:
atexit.register(reset_all)
atexit_done = True
def deinit():
if orig_stdout is not None:
sys.stdout = orig_stdout
if orig_stderr is not None:
sys.stderr = orig_stderr
def reinit():
if wrapped_stdout is not None:
sys.stdout = wrapped_stdout
if wrapped_stderr is not None:
sys.stderr = wrapped_stderr
def wrap_stream(stream, convert, strip, autoreset, wrap):
if wrap:
wrapper = AnsiToWin32(stream,
convert=convert, strip=strip, autoreset=autoreset)
if wrapper.should_wrap():
stream = wrapper.stream
return stream

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# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
# from winbase.h
STDOUT = -11
STDERR = -12
try:
import ctypes
from ctypes import LibraryLoader
windll = LibraryLoader(ctypes.WinDLL)
from ctypes import wintypes
except (AttributeError, ImportError):
windll = None
SetConsoleTextAttribute = lambda *_: None
else:
from ctypes import byref, Structure, c_char, POINTER
COORD = wintypes._COORD
class CONSOLE_SCREEN_BUFFER_INFO(Structure):
"""struct in wincon.h."""
_fields_ = [
("dwSize", COORD),
("dwCursorPosition", COORD),
("wAttributes", wintypes.WORD),
("srWindow", wintypes.SMALL_RECT),
("dwMaximumWindowSize", COORD),
]
def __str__(self):
return '(%d,%d,%d,%d,%d,%d,%d,%d,%d,%d,%d)' % (
self.dwSize.Y, self.dwSize.X
, self.dwCursorPosition.Y, self.dwCursorPosition.X
, self.wAttributes
, self.srWindow.Top, self.srWindow.Left, self.srWindow.Bottom, self.srWindow.Right
, self.dwMaximumWindowSize.Y, self.dwMaximumWindowSize.X
)
_GetStdHandle = windll.kernel32.GetStdHandle
_GetStdHandle.argtypes = [
wintypes.DWORD,
]
_GetStdHandle.restype = wintypes.HANDLE
_GetConsoleScreenBufferInfo = windll.kernel32.GetConsoleScreenBufferInfo
_GetConsoleScreenBufferInfo.argtypes = [
wintypes.HANDLE,
POINTER(CONSOLE_SCREEN_BUFFER_INFO),
]
_GetConsoleScreenBufferInfo.restype = wintypes.BOOL
_SetConsoleTextAttribute = windll.kernel32.SetConsoleTextAttribute
_SetConsoleTextAttribute.argtypes = [
wintypes.HANDLE,
wintypes.WORD,
]
_SetConsoleTextAttribute.restype = wintypes.BOOL
_SetConsoleCursorPosition = windll.kernel32.SetConsoleCursorPosition
_SetConsoleCursorPosition.argtypes = [
wintypes.HANDLE,
COORD,
]
_SetConsoleCursorPosition.restype = wintypes.BOOL
_FillConsoleOutputCharacterA = windll.kernel32.FillConsoleOutputCharacterA
_FillConsoleOutputCharacterA.argtypes = [
wintypes.HANDLE,
c_char,
wintypes.DWORD,
COORD,
POINTER(wintypes.DWORD),
]
_FillConsoleOutputCharacterA.restype = wintypes.BOOL
_FillConsoleOutputAttribute = windll.kernel32.FillConsoleOutputAttribute
_FillConsoleOutputAttribute.argtypes = [
wintypes.HANDLE,
wintypes.WORD,
wintypes.DWORD,
COORD,
POINTER(wintypes.DWORD),
]
_FillConsoleOutputAttribute.restype = wintypes.BOOL
_SetConsoleTitleW = windll.kernel32.SetConsoleTitleA
_SetConsoleTitleW.argtypes = [
wintypes.LPCSTR
]
_SetConsoleTitleW.restype = wintypes.BOOL
handles = {
STDOUT: _GetStdHandle(STDOUT),
STDERR: _GetStdHandle(STDERR),
}
def GetConsoleScreenBufferInfo(stream_id=STDOUT):
handle = handles[stream_id]
csbi = CONSOLE_SCREEN_BUFFER_INFO()
success = _GetConsoleScreenBufferInfo(
handle, byref(csbi))
return csbi
def SetConsoleTextAttribute(stream_id, attrs):
handle = handles[stream_id]
return _SetConsoleTextAttribute(handle, attrs)
def SetConsoleCursorPosition(stream_id, position, adjust=True):
position = COORD(*position)
# If the position is out of range, do nothing.
if position.Y <= 0 or position.X <= 0:
return
# Adjust for Windows' SetConsoleCursorPosition:
# 1. being 0-based, while ANSI is 1-based.
# 2. expecting (x,y), while ANSI uses (y,x).
adjusted_position = COORD(position.Y - 1, position.X - 1)
if adjust:
# Adjust for viewport's scroll position
sr = GetConsoleScreenBufferInfo(STDOUT).srWindow
adjusted_position.Y += sr.Top
adjusted_position.X += sr.Left
# Resume normal processing
handle = handles[stream_id]
return _SetConsoleCursorPosition(handle, adjusted_position)
def FillConsoleOutputCharacter(stream_id, char, length, start):
handle = handles[stream_id]
char = c_char(char.encode())
length = wintypes.DWORD(length)
num_written = wintypes.DWORD(0)
# Note that this is hard-coded for ANSI (vs wide) bytes.
success = _FillConsoleOutputCharacterA(
handle, char, length, start, byref(num_written))
return num_written.value
def FillConsoleOutputAttribute(stream_id, attr, length, start):
''' FillConsoleOutputAttribute( hConsole, csbi.wAttributes, dwConSize, coordScreen, &cCharsWritten )'''
handle = handles[stream_id]
attribute = wintypes.WORD(attr)
length = wintypes.DWORD(length)
num_written = wintypes.DWORD(0)
# Note that this is hard-coded for ANSI (vs wide) bytes.
return _FillConsoleOutputAttribute(
handle, attribute, length, start, byref(num_written))
def SetConsoleTitle(title):
return _SetConsoleTitleW(title)

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# Copyright Jonathan Hartley 2013. BSD 3-Clause license, see LICENSE file.
from . import win32
# from wincon.h
class WinColor(object):
BLACK = 0
BLUE = 1
GREEN = 2
CYAN = 3
RED = 4
MAGENTA = 5
YELLOW = 6
GREY = 7
# from wincon.h
class WinStyle(object):
NORMAL = 0x00 # dim text, dim background
BRIGHT = 0x08 # bright text, dim background
BRIGHT_BACKGROUND = 0x80 # dim text, bright background
class WinTerm(object):
def __init__(self):
self._default = win32.GetConsoleScreenBufferInfo(win32.STDOUT).wAttributes
self.set_attrs(self._default)
self._default_fore = self._fore
self._default_back = self._back
self._default_style = self._style
def get_attrs(self):
return self._fore + self._back * 16 + self._style
def set_attrs(self, value):
self._fore = value & 7
self._back = (value >> 4) & 7
self._style = value & (WinStyle.BRIGHT | WinStyle.BRIGHT_BACKGROUND)
def reset_all(self, on_stderr=None):
self.set_attrs(self._default)
self.set_console(attrs=self._default)
def fore(self, fore=None, light=False, on_stderr=False):
if fore is None:
fore = self._default_fore
self._fore = fore
if light:
self._style |= WinStyle.BRIGHT
self.set_console(on_stderr=on_stderr)
def back(self, back=None, light=False, on_stderr=False):
if back is None:
back = self._default_back
self._back = back
if light:
self._style |= WinStyle.BRIGHT_BACKGROUND
self.set_console(on_stderr=on_stderr)
def style(self, style=None, on_stderr=False):
if style is None:
style = self._default_style
self._style = style
self.set_console(on_stderr=on_stderr)
def set_console(self, attrs=None, on_stderr=False):
if attrs is None:
attrs = self.get_attrs()
handle = win32.STDOUT
if on_stderr:
handle = win32.STDERR
win32.SetConsoleTextAttribute(handle, attrs)
def get_position(self, handle):
position = win32.GetConsoleScreenBufferInfo(handle).dwCursorPosition
# Because Windows coordinates are 0-based,
# and win32.SetConsoleCursorPosition expects 1-based.
position.X += 1
position.Y += 1
return position
def set_cursor_position(self, position=None, on_stderr=False):
if position is None:
#I'm not currently tracking the position, so there is no default.
#position = self.get_position()
return
handle = win32.STDOUT
if on_stderr:
handle = win32.STDERR
win32.SetConsoleCursorPosition(handle, position)
def cursor_adjust(self, x, y, on_stderr=False):
handle = win32.STDOUT
if on_stderr:
handle = win32.STDERR
position = self.get_position(handle)
adjusted_position = (position.Y + y, position.X + x)
win32.SetConsoleCursorPosition(handle, adjusted_position, adjust=False)
def erase_screen(self, mode=0, on_stderr=False):
# 0 should clear from the cursor to the end of the screen.
# 1 should clear from the cursor to the beginning of the screen.
# 2 should clear the entire screen, and move cursor to (1,1)
handle = win32.STDOUT
if on_stderr:
handle = win32.STDERR
csbi = win32.GetConsoleScreenBufferInfo(handle)
# get the number of character cells in the current buffer
cells_in_screen = csbi.dwSize.X * csbi.dwSize.Y
# get number of character cells before current cursor position
cells_before_cursor = csbi.dwSize.X * csbi.dwCursorPosition.Y + csbi.dwCursorPosition.X
if mode == 0:
from_coord = csbi.dwCursorPosition
cells_to_erase = cells_in_screen - cells_before_cursor
if mode == 1:
from_coord = win32.COORD(0, 0)
cells_to_erase = cells_before_cursor
elif mode == 2:
from_coord = win32.COORD(0, 0)
cells_to_erase = cells_in_screen
# fill the entire screen with blanks
win32.FillConsoleOutputCharacter(handle, ' ', cells_to_erase, from_coord)
# now set the buffer's attributes accordingly
win32.FillConsoleOutputAttribute(handle, self.get_attrs(), cells_to_erase, from_coord)
if mode == 2:
# put the cursor where needed
win32.SetConsoleCursorPosition(handle, (1, 1))
def erase_line(self, mode=0, on_stderr=False):
# 0 should clear from the cursor to the end of the line.
# 1 should clear from the cursor to the beginning of the line.
# 2 should clear the entire line.
handle = win32.STDOUT
if on_stderr:
handle = win32.STDERR
csbi = win32.GetConsoleScreenBufferInfo(handle)
if mode == 0:
from_coord = csbi.dwCursorPosition
cells_to_erase = csbi.dwSize.X - csbi.dwCursorPosition.X
if mode == 1:
from_coord = win32.COORD(0, csbi.dwCursorPosition.Y)
cells_to_erase = csbi.dwCursorPosition.X
elif mode == 2:
from_coord = win32.COORD(0, csbi.dwCursorPosition.Y)
cells_to_erase = csbi.dwSize.X
# fill the entire screen with blanks
win32.FillConsoleOutputCharacter(handle, ' ', cells_to_erase, from_coord)
# now set the buffer's attributes accordingly
win32.FillConsoleOutputAttribute(handle, self.get_attrs(), cells_to_erase, from_coord)
def set_title(self, title):
win32.SetConsoleTitle(title)

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012-2014 Vinay Sajip.
# Licensed to the Python Software Foundation under a contributor agreement.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
import logging
__version__ = '0.2.0'
class DistlibException(Exception):
pass
try:
from logging import NullHandler
except ImportError: # pragma: no cover
class NullHandler(logging.Handler):
def handle(self, record): pass
def emit(self, record): pass
def createLock(self): self.lock = None
logger = logging.getLogger(__name__)
logger.addHandler(NullHandler())

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"""Modules copied from Python 3 standard libraries, for internal use only.
Individual classes and functions are found in d2._backport.misc. Intended
usage is to always import things missing from 3.1 from that module: the
built-in/stdlib objects will be used if found.
"""

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012 The Python Software Foundation.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
"""Backports for individual classes and functions."""
import os
import sys
__all__ = ['cache_from_source', 'callable', 'fsencode']
try:
from imp import cache_from_source
except ImportError:
def cache_from_source(py_file, debug=__debug__):
ext = debug and 'c' or 'o'
return py_file + ext
try:
callable = callable
except NameError:
from collections import Callable
def callable(obj):
return isinstance(obj, Callable)
try:
fsencode = os.fsencode
except AttributeError:
def fsencode(filename):
if isinstance(filename, bytes):
return filename
elif isinstance(filename, str):
return filename.encode(sys.getfilesystemencoding())
else:
raise TypeError("expect bytes or str, not %s" %
type(filename).__name__)

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012 The Python Software Foundation.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
"""Utility functions for copying and archiving files and directory trees.
XXX The functions here don't copy the resource fork or other metadata on Mac.
"""
import os
import sys
import stat
from os.path import abspath
import fnmatch
import collections
import errno
from . import tarfile
try:
import bz2
_BZ2_SUPPORTED = True
except ImportError:
_BZ2_SUPPORTED = False
try:
from pwd import getpwnam
except ImportError:
getpwnam = None
try:
from grp import getgrnam
except ImportError:
getgrnam = None
__all__ = ["copyfileobj", "copyfile", "copymode", "copystat", "copy", "copy2",
"copytree", "move", "rmtree", "Error", "SpecialFileError",
"ExecError", "make_archive", "get_archive_formats",
"register_archive_format", "unregister_archive_format",
"get_unpack_formats", "register_unpack_format",
"unregister_unpack_format", "unpack_archive", "ignore_patterns"]
class Error(EnvironmentError):
pass
class SpecialFileError(EnvironmentError):
"""Raised when trying to do a kind of operation (e.g. copying) which is
not supported on a special file (e.g. a named pipe)"""
class ExecError(EnvironmentError):
"""Raised when a command could not be executed"""
class ReadError(EnvironmentError):
"""Raised when an archive cannot be read"""
class RegistryError(Exception):
"""Raised when a registery operation with the archiving
and unpacking registeries fails"""
try:
WindowsError
except NameError:
WindowsError = None
def copyfileobj(fsrc, fdst, length=16*1024):
"""copy data from file-like object fsrc to file-like object fdst"""
while 1:
buf = fsrc.read(length)
if not buf:
break
fdst.write(buf)
def _samefile(src, dst):
# Macintosh, Unix.
if hasattr(os.path, 'samefile'):
try:
return os.path.samefile(src, dst)
except OSError:
return False
# All other platforms: check for same pathname.
return (os.path.normcase(os.path.abspath(src)) ==
os.path.normcase(os.path.abspath(dst)))
def copyfile(src, dst):
"""Copy data from src to dst"""
if _samefile(src, dst):
raise Error("`%s` and `%s` are the same file" % (src, dst))
for fn in [src, dst]:
try:
st = os.stat(fn)
except OSError:
# File most likely does not exist
pass
else:
# XXX What about other special files? (sockets, devices...)
if stat.S_ISFIFO(st.st_mode):
raise SpecialFileError("`%s` is a named pipe" % fn)
with open(src, 'rb') as fsrc:
with open(dst, 'wb') as fdst:
copyfileobj(fsrc, fdst)
def copymode(src, dst):
"""Copy mode bits from src to dst"""
if hasattr(os, 'chmod'):
st = os.stat(src)
mode = stat.S_IMODE(st.st_mode)
os.chmod(dst, mode)
def copystat(src, dst):
"""Copy all stat info (mode bits, atime, mtime, flags) from src to dst"""
st = os.stat(src)
mode = stat.S_IMODE(st.st_mode)
if hasattr(os, 'utime'):
os.utime(dst, (st.st_atime, st.st_mtime))
if hasattr(os, 'chmod'):
os.chmod(dst, mode)
if hasattr(os, 'chflags') and hasattr(st, 'st_flags'):
try:
os.chflags(dst, st.st_flags)
except OSError as why:
if (not hasattr(errno, 'EOPNOTSUPP') or
why.errno != errno.EOPNOTSUPP):
raise
def copy(src, dst):
"""Copy data and mode bits ("cp src dst").
The destination may be a directory.
"""
if os.path.isdir(dst):
dst = os.path.join(dst, os.path.basename(src))
copyfile(src, dst)
copymode(src, dst)
def copy2(src, dst):
"""Copy data and all stat info ("cp -p src dst").
The destination may be a directory.
"""
if os.path.isdir(dst):
dst = os.path.join(dst, os.path.basename(src))
copyfile(src, dst)
copystat(src, dst)
def ignore_patterns(*patterns):
"""Function that can be used as copytree() ignore parameter.
Patterns is a sequence of glob-style patterns
that are used to exclude files"""
def _ignore_patterns(path, names):
ignored_names = []
for pattern in patterns:
ignored_names.extend(fnmatch.filter(names, pattern))
return set(ignored_names)
return _ignore_patterns
def copytree(src, dst, symlinks=False, ignore=None, copy_function=copy2,
ignore_dangling_symlinks=False):
"""Recursively copy a directory tree.
The destination directory must not already exist.
If exception(s) occur, an Error is raised with a list of reasons.
If the optional symlinks flag is true, symbolic links in the
source tree result in symbolic links in the destination tree; if
it is false, the contents of the files pointed to by symbolic
links are copied. If the file pointed by the symlink doesn't
exist, an exception will be added in the list of errors raised in
an Error exception at the end of the copy process.
You can set the optional ignore_dangling_symlinks flag to true if you
want to silence this exception. Notice that this has no effect on
platforms that don't support os.symlink.
The optional ignore argument is a callable. If given, it
is called with the `src` parameter, which is the directory
being visited by copytree(), and `names` which is the list of
`src` contents, as returned by os.listdir():
callable(src, names) -> ignored_names
Since copytree() is called recursively, the callable will be
called once for each directory that is copied. It returns a
list of names relative to the `src` directory that should
not be copied.
The optional copy_function argument is a callable that will be used
to copy each file. It will be called with the source path and the
destination path as arguments. By default, copy2() is used, but any
function that supports the same signature (like copy()) can be used.
"""
names = os.listdir(src)
if ignore is not None:
ignored_names = ignore(src, names)
else:
ignored_names = set()
os.makedirs(dst)
errors = []
for name in names:
if name in ignored_names:
continue
srcname = os.path.join(src, name)
dstname = os.path.join(dst, name)
try:
if os.path.islink(srcname):
linkto = os.readlink(srcname)
if symlinks:
os.symlink(linkto, dstname)
else:
# ignore dangling symlink if the flag is on
if not os.path.exists(linkto) and ignore_dangling_symlinks:
continue
# otherwise let the copy occurs. copy2 will raise an error
copy_function(srcname, dstname)
elif os.path.isdir(srcname):
copytree(srcname, dstname, symlinks, ignore, copy_function)
else:
# Will raise a SpecialFileError for unsupported file types
copy_function(srcname, dstname)
# catch the Error from the recursive copytree so that we can
# continue with other files
except Error as err:
errors.extend(err.args[0])
except EnvironmentError as why:
errors.append((srcname, dstname, str(why)))
try:
copystat(src, dst)
except OSError as why:
if WindowsError is not None and isinstance(why, WindowsError):
# Copying file access times may fail on Windows
pass
else:
errors.extend((src, dst, str(why)))
if errors:
raise Error(errors)
def rmtree(path, ignore_errors=False, onerror=None):
"""Recursively delete a directory tree.
If ignore_errors is set, errors are ignored; otherwise, if onerror
is set, it is called to handle the error with arguments (func,
path, exc_info) where func is os.listdir, os.remove, or os.rmdir;
path is the argument to that function that caused it to fail; and
exc_info is a tuple returned by sys.exc_info(). If ignore_errors
is false and onerror is None, an exception is raised.
"""
if ignore_errors:
def onerror(*args):
pass
elif onerror is None:
def onerror(*args):
raise
try:
if os.path.islink(path):
# symlinks to directories are forbidden, see bug #1669
raise OSError("Cannot call rmtree on a symbolic link")
except OSError:
onerror(os.path.islink, path, sys.exc_info())
# can't continue even if onerror hook returns
return
names = []
try:
names = os.listdir(path)
except os.error:
onerror(os.listdir, path, sys.exc_info())
for name in names:
fullname = os.path.join(path, name)
try:
mode = os.lstat(fullname).st_mode
except os.error:
mode = 0
if stat.S_ISDIR(mode):
rmtree(fullname, ignore_errors, onerror)
else:
try:
os.remove(fullname)
except os.error:
onerror(os.remove, fullname, sys.exc_info())
try:
os.rmdir(path)
except os.error:
onerror(os.rmdir, path, sys.exc_info())
def _basename(path):
# A basename() variant which first strips the trailing slash, if present.
# Thus we always get the last component of the path, even for directories.
return os.path.basename(path.rstrip(os.path.sep))
def move(src, dst):
"""Recursively move a file or directory to another location. This is
similar to the Unix "mv" command.
If the destination is a directory or a symlink to a directory, the source
is moved inside the directory. The destination path must not already
exist.
If the destination already exists but is not a directory, it may be
overwritten depending on os.rename() semantics.
If the destination is on our current filesystem, then rename() is used.
Otherwise, src is copied to the destination and then removed.
A lot more could be done here... A look at a mv.c shows a lot of
the issues this implementation glosses over.
"""
real_dst = dst
if os.path.isdir(dst):
if _samefile(src, dst):
# We might be on a case insensitive filesystem,
# perform the rename anyway.
os.rename(src, dst)
return
real_dst = os.path.join(dst, _basename(src))
if os.path.exists(real_dst):
raise Error("Destination path '%s' already exists" % real_dst)
try:
os.rename(src, real_dst)
except OSError:
if os.path.isdir(src):
if _destinsrc(src, dst):
raise Error("Cannot move a directory '%s' into itself '%s'." % (src, dst))
copytree(src, real_dst, symlinks=True)
rmtree(src)
else:
copy2(src, real_dst)
os.unlink(src)
def _destinsrc(src, dst):
src = abspath(src)
dst = abspath(dst)
if not src.endswith(os.path.sep):
src += os.path.sep
if not dst.endswith(os.path.sep):
dst += os.path.sep
return dst.startswith(src)
def _get_gid(name):
"""Returns a gid, given a group name."""
if getgrnam is None or name is None:
return None
try:
result = getgrnam(name)
except KeyError:
result = None
if result is not None:
return result[2]
return None
def _get_uid(name):
"""Returns an uid, given a user name."""
if getpwnam is None or name is None:
return None
try:
result = getpwnam(name)
except KeyError:
result = None
if result is not None:
return result[2]
return None
def _make_tarball(base_name, base_dir, compress="gzip", verbose=0, dry_run=0,
owner=None, group=None, logger=None):
"""Create a (possibly compressed) tar file from all the files under
'base_dir'.
'compress' must be "gzip" (the default), "bzip2", or None.
'owner' and 'group' can be used to define an owner and a group for the
archive that is being built. If not provided, the current owner and group
will be used.
The output tar file will be named 'base_name' + ".tar", possibly plus
the appropriate compression extension (".gz", or ".bz2").
Returns the output filename.
"""
tar_compression = {'gzip': 'gz', None: ''}
compress_ext = {'gzip': '.gz'}
if _BZ2_SUPPORTED:
tar_compression['bzip2'] = 'bz2'
compress_ext['bzip2'] = '.bz2'
# flags for compression program, each element of list will be an argument
if compress is not None and compress not in compress_ext:
raise ValueError("bad value for 'compress', or compression format not "
"supported : {0}".format(compress))
archive_name = base_name + '.tar' + compress_ext.get(compress, '')
archive_dir = os.path.dirname(archive_name)
if not os.path.exists(archive_dir):
if logger is not None:
logger.info("creating %s", archive_dir)
if not dry_run:
os.makedirs(archive_dir)
# creating the tarball
if logger is not None:
logger.info('Creating tar archive')
uid = _get_uid(owner)
gid = _get_gid(group)
def _set_uid_gid(tarinfo):
if gid is not None:
tarinfo.gid = gid
tarinfo.gname = group
if uid is not None:
tarinfo.uid = uid
tarinfo.uname = owner
return tarinfo
if not dry_run:
tar = tarfile.open(archive_name, 'w|%s' % tar_compression[compress])
try:
tar.add(base_dir, filter=_set_uid_gid)
finally:
tar.close()
return archive_name
def _call_external_zip(base_dir, zip_filename, verbose=False, dry_run=False):
# XXX see if we want to keep an external call here
if verbose:
zipoptions = "-r"
else:
zipoptions = "-rq"
from distutils.errors import DistutilsExecError
from distutils.spawn import spawn
try:
spawn(["zip", zipoptions, zip_filename, base_dir], dry_run=dry_run)
except DistutilsExecError:
# XXX really should distinguish between "couldn't find
# external 'zip' command" and "zip failed".
raise ExecError("unable to create zip file '%s': "
"could neither import the 'zipfile' module nor "
"find a standalone zip utility") % zip_filename
def _make_zipfile(base_name, base_dir, verbose=0, dry_run=0, logger=None):
"""Create a zip file from all the files under 'base_dir'.
The output zip file will be named 'base_name' + ".zip". Uses either the
"zipfile" Python module (if available) or the InfoZIP "zip" utility
(if installed and found on the default search path). If neither tool is
available, raises ExecError. Returns the name of the output zip
file.
"""
zip_filename = base_name + ".zip"
archive_dir = os.path.dirname(base_name)
if not os.path.exists(archive_dir):
if logger is not None:
logger.info("creating %s", archive_dir)
if not dry_run:
os.makedirs(archive_dir)
# If zipfile module is not available, try spawning an external 'zip'
# command.
try:
import zipfile
except ImportError:
zipfile = None
if zipfile is None:
_call_external_zip(base_dir, zip_filename, verbose, dry_run)
else:
if logger is not None:
logger.info("creating '%s' and adding '%s' to it",
zip_filename, base_dir)
if not dry_run:
zip = zipfile.ZipFile(zip_filename, "w",
compression=zipfile.ZIP_DEFLATED)
for dirpath, dirnames, filenames in os.walk(base_dir):
for name in filenames:
path = os.path.normpath(os.path.join(dirpath, name))
if os.path.isfile(path):
zip.write(path, path)
if logger is not None:
logger.info("adding '%s'", path)
zip.close()
return zip_filename
_ARCHIVE_FORMATS = {
'gztar': (_make_tarball, [('compress', 'gzip')], "gzip'ed tar-file"),
'bztar': (_make_tarball, [('compress', 'bzip2')], "bzip2'ed tar-file"),
'tar': (_make_tarball, [('compress', None)], "uncompressed tar file"),
'zip': (_make_zipfile, [], "ZIP file"),
}
if _BZ2_SUPPORTED:
_ARCHIVE_FORMATS['bztar'] = (_make_tarball, [('compress', 'bzip2')],
"bzip2'ed tar-file")
def get_archive_formats():
"""Returns a list of supported formats for archiving and unarchiving.
Each element of the returned sequence is a tuple (name, description)
"""
formats = [(name, registry[2]) for name, registry in
_ARCHIVE_FORMATS.items()]
formats.sort()
return formats
def register_archive_format(name, function, extra_args=None, description=''):
"""Registers an archive format.
name is the name of the format. function is the callable that will be
used to create archives. If provided, extra_args is a sequence of
(name, value) tuples that will be passed as arguments to the callable.
description can be provided to describe the format, and will be returned
by the get_archive_formats() function.
"""
if extra_args is None:
extra_args = []
if not isinstance(function, collections.Callable):
raise TypeError('The %s object is not callable' % function)
if not isinstance(extra_args, (tuple, list)):
raise TypeError('extra_args needs to be a sequence')
for element in extra_args:
if not isinstance(element, (tuple, list)) or len(element) !=2:
raise TypeError('extra_args elements are : (arg_name, value)')
_ARCHIVE_FORMATS[name] = (function, extra_args, description)
def unregister_archive_format(name):
del _ARCHIVE_FORMATS[name]
def make_archive(base_name, format, root_dir=None, base_dir=None, verbose=0,
dry_run=0, owner=None, group=None, logger=None):
"""Create an archive file (eg. zip or tar).
'base_name' is the name of the file to create, minus any format-specific
extension; 'format' is the archive format: one of "zip", "tar", "bztar"
or "gztar".
'root_dir' is a directory that will be the root directory of the
archive; ie. we typically chdir into 'root_dir' before creating the
archive. 'base_dir' is the directory where we start archiving from;
ie. 'base_dir' will be the common prefix of all files and
directories in the archive. 'root_dir' and 'base_dir' both default
to the current directory. Returns the name of the archive file.
'owner' and 'group' are used when creating a tar archive. By default,
uses the current owner and group.
"""
save_cwd = os.getcwd()
if root_dir is not None:
if logger is not None:
logger.debug("changing into '%s'", root_dir)
base_name = os.path.abspath(base_name)
if not dry_run:
os.chdir(root_dir)
if base_dir is None:
base_dir = os.curdir
kwargs = {'dry_run': dry_run, 'logger': logger}
try:
format_info = _ARCHIVE_FORMATS[format]
except KeyError:
raise ValueError("unknown archive format '%s'" % format)
func = format_info[0]
for arg, val in format_info[1]:
kwargs[arg] = val
if format != 'zip':
kwargs['owner'] = owner
kwargs['group'] = group
try:
filename = func(base_name, base_dir, **kwargs)
finally:
if root_dir is not None:
if logger is not None:
logger.debug("changing back to '%s'", save_cwd)
os.chdir(save_cwd)
return filename
def get_unpack_formats():
"""Returns a list of supported formats for unpacking.
Each element of the returned sequence is a tuple
(name, extensions, description)
"""
formats = [(name, info[0], info[3]) for name, info in
_UNPACK_FORMATS.items()]
formats.sort()
return formats
def _check_unpack_options(extensions, function, extra_args):
"""Checks what gets registered as an unpacker."""
# first make sure no other unpacker is registered for this extension
existing_extensions = {}
for name, info in _UNPACK_FORMATS.items():
for ext in info[0]:
existing_extensions[ext] = name
for extension in extensions:
if extension in existing_extensions:
msg = '%s is already registered for "%s"'
raise RegistryError(msg % (extension,
existing_extensions[extension]))
if not isinstance(function, collections.Callable):
raise TypeError('The registered function must be a callable')
def register_unpack_format(name, extensions, function, extra_args=None,
description=''):
"""Registers an unpack format.
`name` is the name of the format. `extensions` is a list of extensions
corresponding to the format.
`function` is the callable that will be
used to unpack archives. The callable will receive archives to unpack.
If it's unable to handle an archive, it needs to raise a ReadError
exception.
If provided, `extra_args` is a sequence of
(name, value) tuples that will be passed as arguments to the callable.
description can be provided to describe the format, and will be returned
by the get_unpack_formats() function.
"""
if extra_args is None:
extra_args = []
_check_unpack_options(extensions, function, extra_args)
_UNPACK_FORMATS[name] = extensions, function, extra_args, description
def unregister_unpack_format(name):
"""Removes the pack format from the registery."""
del _UNPACK_FORMATS[name]
def _ensure_directory(path):
"""Ensure that the parent directory of `path` exists"""
dirname = os.path.dirname(path)
if not os.path.isdir(dirname):
os.makedirs(dirname)
def _unpack_zipfile(filename, extract_dir):
"""Unpack zip `filename` to `extract_dir`
"""
try:
import zipfile
except ImportError:
raise ReadError('zlib not supported, cannot unpack this archive.')
if not zipfile.is_zipfile(filename):
raise ReadError("%s is not a zip file" % filename)
zip = zipfile.ZipFile(filename)
try:
for info in zip.infolist():
name = info.filename
# don't extract absolute paths or ones with .. in them
if name.startswith('/') or '..' in name:
continue
target = os.path.join(extract_dir, *name.split('/'))
if not target:
continue
_ensure_directory(target)
if not name.endswith('/'):
# file
data = zip.read(info.filename)
f = open(target, 'wb')
try:
f.write(data)
finally:
f.close()
del data
finally:
zip.close()
def _unpack_tarfile(filename, extract_dir):
"""Unpack tar/tar.gz/tar.bz2 `filename` to `extract_dir`
"""
try:
tarobj = tarfile.open(filename)
except tarfile.TarError:
raise ReadError(
"%s is not a compressed or uncompressed tar file" % filename)
try:
tarobj.extractall(extract_dir)
finally:
tarobj.close()
_UNPACK_FORMATS = {
'gztar': (['.tar.gz', '.tgz'], _unpack_tarfile, [], "gzip'ed tar-file"),
'tar': (['.tar'], _unpack_tarfile, [], "uncompressed tar file"),
'zip': (['.zip'], _unpack_zipfile, [], "ZIP file")
}
if _BZ2_SUPPORTED:
_UNPACK_FORMATS['bztar'] = (['.bz2'], _unpack_tarfile, [],
"bzip2'ed tar-file")
def _find_unpack_format(filename):
for name, info in _UNPACK_FORMATS.items():
for extension in info[0]:
if filename.endswith(extension):
return name
return None
def unpack_archive(filename, extract_dir=None, format=None):
"""Unpack an archive.
`filename` is the name of the archive.
`extract_dir` is the name of the target directory, where the archive
is unpacked. If not provided, the current working directory is used.
`format` is the archive format: one of "zip", "tar", or "gztar". Or any
other registered format. If not provided, unpack_archive will use the
filename extension and see if an unpacker was registered for that
extension.
In case none is found, a ValueError is raised.
"""
if extract_dir is None:
extract_dir = os.getcwd()
if format is not None:
try:
format_info = _UNPACK_FORMATS[format]
except KeyError:
raise ValueError("Unknown unpack format '{0}'".format(format))
func = format_info[1]
func(filename, extract_dir, **dict(format_info[2]))
else:
# we need to look at the registered unpackers supported extensions
format = _find_unpack_format(filename)
if format is None:
raise ReadError("Unknown archive format '{0}'".format(filename))
func = _UNPACK_FORMATS[format][1]
kwargs = dict(_UNPACK_FORMATS[format][2])
func(filename, extract_dir, **kwargs)

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[posix_prefix]
# Configuration directories. Some of these come straight out of the
# configure script. They are for implementing the other variables, not to
# be used directly in [resource_locations].
confdir = /etc
datadir = /usr/share
libdir = /usr/lib
statedir = /var
# User resource directory
local = ~/.local/{distribution.name}
stdlib = {base}/lib/python{py_version_short}
platstdlib = {platbase}/lib/python{py_version_short}
purelib = {base}/lib/python{py_version_short}/site-packages
platlib = {platbase}/lib/python{py_version_short}/site-packages
include = {base}/include/python{py_version_short}{abiflags}
platinclude = {platbase}/include/python{py_version_short}{abiflags}
data = {base}
[posix_home]
stdlib = {base}/lib/python
platstdlib = {base}/lib/python
purelib = {base}/lib/python
platlib = {base}/lib/python
include = {base}/include/python
platinclude = {base}/include/python
scripts = {base}/bin
data = {base}
[nt]
stdlib = {base}/Lib
platstdlib = {base}/Lib
purelib = {base}/Lib/site-packages
platlib = {base}/Lib/site-packages
include = {base}/Include
platinclude = {base}/Include
scripts = {base}/Scripts
data = {base}
[os2]
stdlib = {base}/Lib
platstdlib = {base}/Lib
purelib = {base}/Lib/site-packages
platlib = {base}/Lib/site-packages
include = {base}/Include
platinclude = {base}/Include
scripts = {base}/Scripts
data = {base}
[os2_home]
stdlib = {userbase}/lib/python{py_version_short}
platstdlib = {userbase}/lib/python{py_version_short}
purelib = {userbase}/lib/python{py_version_short}/site-packages
platlib = {userbase}/lib/python{py_version_short}/site-packages
include = {userbase}/include/python{py_version_short}
scripts = {userbase}/bin
data = {userbase}
[nt_user]
stdlib = {userbase}/Python{py_version_nodot}
platstdlib = {userbase}/Python{py_version_nodot}
purelib = {userbase}/Python{py_version_nodot}/site-packages
platlib = {userbase}/Python{py_version_nodot}/site-packages
include = {userbase}/Python{py_version_nodot}/Include
scripts = {userbase}/Scripts
data = {userbase}
[posix_user]
stdlib = {userbase}/lib/python{py_version_short}
platstdlib = {userbase}/lib/python{py_version_short}
purelib = {userbase}/lib/python{py_version_short}/site-packages
platlib = {userbase}/lib/python{py_version_short}/site-packages
include = {userbase}/include/python{py_version_short}
scripts = {userbase}/bin
data = {userbase}
[osx_framework_user]
stdlib = {userbase}/lib/python
platstdlib = {userbase}/lib/python
purelib = {userbase}/lib/python/site-packages
platlib = {userbase}/lib/python/site-packages
include = {userbase}/include
scripts = {userbase}/bin
data = {userbase}

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012 The Python Software Foundation.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
"""Access to Python's configuration information."""
import codecs
import os
import re
import sys
from os.path import pardir, realpath
try:
import configparser
except ImportError:
import ConfigParser as configparser
__all__ = [
'get_config_h_filename',
'get_config_var',
'get_config_vars',
'get_makefile_filename',
'get_path',
'get_path_names',
'get_paths',
'get_platform',
'get_python_version',
'get_scheme_names',
'parse_config_h',
]
def _safe_realpath(path):
try:
return realpath(path)
except OSError:
return path
if sys.executable:
_PROJECT_BASE = os.path.dirname(_safe_realpath(sys.executable))
else:
# sys.executable can be empty if argv[0] has been changed and Python is
# unable to retrieve the real program name
_PROJECT_BASE = _safe_realpath(os.getcwd())
if os.name == "nt" and "pcbuild" in _PROJECT_BASE[-8:].lower():
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir))
# PC/VS7.1
if os.name == "nt" and "\\pc\\v" in _PROJECT_BASE[-10:].lower():
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir, pardir))
# PC/AMD64
if os.name == "nt" and "\\pcbuild\\amd64" in _PROJECT_BASE[-14:].lower():
_PROJECT_BASE = _safe_realpath(os.path.join(_PROJECT_BASE, pardir, pardir))
def is_python_build():
for fn in ("Setup.dist", "Setup.local"):
if os.path.isfile(os.path.join(_PROJECT_BASE, "Modules", fn)):
return True
return False
_PYTHON_BUILD = is_python_build()
_cfg_read = False
def _ensure_cfg_read():
global _cfg_read
if not _cfg_read:
from ..resources import finder
backport_package = __name__.rsplit('.', 1)[0]
_finder = finder(backport_package)
_cfgfile = _finder.find('sysconfig.cfg')
assert _cfgfile, 'sysconfig.cfg exists'
with _cfgfile.as_stream() as s:
_SCHEMES.readfp(s)
if _PYTHON_BUILD:
for scheme in ('posix_prefix', 'posix_home'):
_SCHEMES.set(scheme, 'include', '{srcdir}/Include')
_SCHEMES.set(scheme, 'platinclude', '{projectbase}/.')
_cfg_read = True
_SCHEMES = configparser.RawConfigParser()
_VAR_REPL = re.compile(r'\{([^{]*?)\}')
def _expand_globals(config):
_ensure_cfg_read()
if config.has_section('globals'):
globals = config.items('globals')
else:
globals = tuple()
sections = config.sections()
for section in sections:
if section == 'globals':
continue
for option, value in globals:
if config.has_option(section, option):
continue
config.set(section, option, value)
config.remove_section('globals')
# now expanding local variables defined in the cfg file
#
for section in config.sections():
variables = dict(config.items(section))
def _replacer(matchobj):
name = matchobj.group(1)
if name in variables:
return variables[name]
return matchobj.group(0)
for option, value in config.items(section):
config.set(section, option, _VAR_REPL.sub(_replacer, value))
#_expand_globals(_SCHEMES)
# FIXME don't rely on sys.version here, its format is an implementation detail
# of CPython, use sys.version_info or sys.hexversion
_PY_VERSION = sys.version.split()[0]
_PY_VERSION_SHORT = sys.version[:3]
_PY_VERSION_SHORT_NO_DOT = _PY_VERSION[0] + _PY_VERSION[2]
_PREFIX = os.path.normpath(sys.prefix)
_EXEC_PREFIX = os.path.normpath(sys.exec_prefix)
_CONFIG_VARS = None
_USER_BASE = None
def _subst_vars(path, local_vars):
"""In the string `path`, replace tokens like {some.thing} with the
corresponding value from the map `local_vars`.
If there is no corresponding value, leave the token unchanged.
"""
def _replacer(matchobj):
name = matchobj.group(1)
if name in local_vars:
return local_vars[name]
elif name in os.environ:
return os.environ[name]
return matchobj.group(0)
return _VAR_REPL.sub(_replacer, path)
def _extend_dict(target_dict, other_dict):
target_keys = target_dict.keys()
for key, value in other_dict.items():
if key in target_keys:
continue
target_dict[key] = value
def _expand_vars(scheme, vars):
res = {}
if vars is None:
vars = {}
_extend_dict(vars, get_config_vars())
for key, value in _SCHEMES.items(scheme):
if os.name in ('posix', 'nt'):
value = os.path.expanduser(value)
res[key] = os.path.normpath(_subst_vars(value, vars))
return res
def format_value(value, vars):
def _replacer(matchobj):
name = matchobj.group(1)
if name in vars:
return vars[name]
return matchobj.group(0)
return _VAR_REPL.sub(_replacer, value)
def _get_default_scheme():
if os.name == 'posix':
# the default scheme for posix is posix_prefix
return 'posix_prefix'
return os.name
def _getuserbase():
env_base = os.environ.get("PYTHONUSERBASE", None)
def joinuser(*args):
return os.path.expanduser(os.path.join(*args))
# what about 'os2emx', 'riscos' ?
if os.name == "nt":
base = os.environ.get("APPDATA") or "~"
if env_base:
return env_base
else:
return joinuser(base, "Python")
if sys.platform == "darwin":
framework = get_config_var("PYTHONFRAMEWORK")
if framework:
if env_base:
return env_base
else:
return joinuser("~", "Library", framework, "%d.%d" %
sys.version_info[:2])
if env_base:
return env_base
else:
return joinuser("~", ".local")
def _parse_makefile(filename, vars=None):
"""Parse a Makefile-style file.
A dictionary containing name/value pairs is returned. If an
optional dictionary is passed in as the second argument, it is
used instead of a new dictionary.
"""
# Regexes needed for parsing Makefile (and similar syntaxes,
# like old-style Setup files).
_variable_rx = re.compile("([a-zA-Z][a-zA-Z0-9_]+)\s*=\s*(.*)")
_findvar1_rx = re.compile(r"\$\(([A-Za-z][A-Za-z0-9_]*)\)")
_findvar2_rx = re.compile(r"\${([A-Za-z][A-Za-z0-9_]*)}")
if vars is None:
vars = {}
done = {}
notdone = {}
with codecs.open(filename, encoding='utf-8', errors="surrogateescape") as f:
lines = f.readlines()
for line in lines:
if line.startswith('#') or line.strip() == '':
continue
m = _variable_rx.match(line)
if m:
n, v = m.group(1, 2)
v = v.strip()
# `$$' is a literal `$' in make
tmpv = v.replace('$$', '')
if "$" in tmpv:
notdone[n] = v
else:
try:
v = int(v)
except ValueError:
# insert literal `$'
done[n] = v.replace('$$', '$')
else:
done[n] = v
# do variable interpolation here
variables = list(notdone.keys())
# Variables with a 'PY_' prefix in the makefile. These need to
# be made available without that prefix through sysconfig.
# Special care is needed to ensure that variable expansion works, even
# if the expansion uses the name without a prefix.
renamed_variables = ('CFLAGS', 'LDFLAGS', 'CPPFLAGS')
while len(variables) > 0:
for name in tuple(variables):
value = notdone[name]
m = _findvar1_rx.search(value) or _findvar2_rx.search(value)
if m is not None:
n = m.group(1)
found = True
if n in done:
item = str(done[n])
elif n in notdone:
# get it on a subsequent round
found = False
elif n in os.environ:
# do it like make: fall back to environment
item = os.environ[n]
elif n in renamed_variables:
if (name.startswith('PY_') and
name[3:] in renamed_variables):
item = ""
elif 'PY_' + n in notdone:
found = False
else:
item = str(done['PY_' + n])
else:
done[n] = item = ""
if found:
after = value[m.end():]
value = value[:m.start()] + item + after
if "$" in after:
notdone[name] = value
else:
try:
value = int(value)
except ValueError:
done[name] = value.strip()
else:
done[name] = value
variables.remove(name)
if (name.startswith('PY_') and
name[3:] in renamed_variables):
name = name[3:]
if name not in done:
done[name] = value
else:
# bogus variable reference (e.g. "prefix=$/opt/python");
# just drop it since we can't deal
done[name] = value
variables.remove(name)
# strip spurious spaces
for k, v in done.items():
if isinstance(v, str):
done[k] = v.strip()
# save the results in the global dictionary
vars.update(done)
return vars
def get_makefile_filename():
"""Return the path of the Makefile."""
if _PYTHON_BUILD:
return os.path.join(_PROJECT_BASE, "Makefile")
if hasattr(sys, 'abiflags'):
config_dir_name = 'config-%s%s' % (_PY_VERSION_SHORT, sys.abiflags)
else:
config_dir_name = 'config'
return os.path.join(get_path('stdlib'), config_dir_name, 'Makefile')
def _init_posix(vars):
"""Initialize the module as appropriate for POSIX systems."""
# load the installed Makefile:
makefile = get_makefile_filename()
try:
_parse_makefile(makefile, vars)
except IOError as e:
msg = "invalid Python installation: unable to open %s" % makefile
if hasattr(e, "strerror"):
msg = msg + " (%s)" % e.strerror
raise IOError(msg)
# load the installed pyconfig.h:
config_h = get_config_h_filename()
try:
with open(config_h) as f:
parse_config_h(f, vars)
except IOError as e:
msg = "invalid Python installation: unable to open %s" % config_h
if hasattr(e, "strerror"):
msg = msg + " (%s)" % e.strerror
raise IOError(msg)
# On AIX, there are wrong paths to the linker scripts in the Makefile
# -- these paths are relative to the Python source, but when installed
# the scripts are in another directory.
if _PYTHON_BUILD:
vars['LDSHARED'] = vars['BLDSHARED']
def _init_non_posix(vars):
"""Initialize the module as appropriate for NT"""
# set basic install directories
vars['LIBDEST'] = get_path('stdlib')
vars['BINLIBDEST'] = get_path('platstdlib')
vars['INCLUDEPY'] = get_path('include')
vars['SO'] = '.pyd'
vars['EXE'] = '.exe'
vars['VERSION'] = _PY_VERSION_SHORT_NO_DOT
vars['BINDIR'] = os.path.dirname(_safe_realpath(sys.executable))
#
# public APIs
#
def parse_config_h(fp, vars=None):
"""Parse a config.h-style file.
A dictionary containing name/value pairs is returned. If an
optional dictionary is passed in as the second argument, it is
used instead of a new dictionary.
"""
if vars is None:
vars = {}
define_rx = re.compile("#define ([A-Z][A-Za-z0-9_]+) (.*)\n")
undef_rx = re.compile("/[*] #undef ([A-Z][A-Za-z0-9_]+) [*]/\n")
while True:
line = fp.readline()
if not line:
break
m = define_rx.match(line)
if m:
n, v = m.group(1, 2)
try:
v = int(v)
except ValueError:
pass
vars[n] = v
else:
m = undef_rx.match(line)
if m:
vars[m.group(1)] = 0
return vars
def get_config_h_filename():
"""Return the path of pyconfig.h."""
if _PYTHON_BUILD:
if os.name == "nt":
inc_dir = os.path.join(_PROJECT_BASE, "PC")
else:
inc_dir = _PROJECT_BASE
else:
inc_dir = get_path('platinclude')
return os.path.join(inc_dir, 'pyconfig.h')
def get_scheme_names():
"""Return a tuple containing the schemes names."""
return tuple(sorted(_SCHEMES.sections()))
def get_path_names():
"""Return a tuple containing the paths names."""
# xxx see if we want a static list
return _SCHEMES.options('posix_prefix')
def get_paths(scheme=_get_default_scheme(), vars=None, expand=True):
"""Return a mapping containing an install scheme.
``scheme`` is the install scheme name. If not provided, it will
return the default scheme for the current platform.
"""
_ensure_cfg_read()
if expand:
return _expand_vars(scheme, vars)
else:
return dict(_SCHEMES.items(scheme))
def get_path(name, scheme=_get_default_scheme(), vars=None, expand=True):
"""Return a path corresponding to the scheme.
``scheme`` is the install scheme name.
"""
return get_paths(scheme, vars, expand)[name]
def get_config_vars(*args):
"""With no arguments, return a dictionary of all configuration
variables relevant for the current platform.
On Unix, this means every variable defined in Python's installed Makefile;
On Windows and Mac OS it's a much smaller set.
With arguments, return a list of values that result from looking up
each argument in the configuration variable dictionary.
"""
global _CONFIG_VARS
if _CONFIG_VARS is None:
_CONFIG_VARS = {}
# Normalized versions of prefix and exec_prefix are handy to have;
# in fact, these are the standard versions used most places in the
# distutils2 module.
_CONFIG_VARS['prefix'] = _PREFIX
_CONFIG_VARS['exec_prefix'] = _EXEC_PREFIX
_CONFIG_VARS['py_version'] = _PY_VERSION
_CONFIG_VARS['py_version_short'] = _PY_VERSION_SHORT
_CONFIG_VARS['py_version_nodot'] = _PY_VERSION[0] + _PY_VERSION[2]
_CONFIG_VARS['base'] = _PREFIX
_CONFIG_VARS['platbase'] = _EXEC_PREFIX
_CONFIG_VARS['projectbase'] = _PROJECT_BASE
try:
_CONFIG_VARS['abiflags'] = sys.abiflags
except AttributeError:
# sys.abiflags may not be defined on all platforms.
_CONFIG_VARS['abiflags'] = ''
if os.name in ('nt', 'os2'):
_init_non_posix(_CONFIG_VARS)
if os.name == 'posix':
_init_posix(_CONFIG_VARS)
# Setting 'userbase' is done below the call to the
# init function to enable using 'get_config_var' in
# the init-function.
if sys.version >= '2.6':
_CONFIG_VARS['userbase'] = _getuserbase()
if 'srcdir' not in _CONFIG_VARS:
_CONFIG_VARS['srcdir'] = _PROJECT_BASE
else:
_CONFIG_VARS['srcdir'] = _safe_realpath(_CONFIG_VARS['srcdir'])
# Convert srcdir into an absolute path if it appears necessary.
# Normally it is relative to the build directory. However, during
# testing, for example, we might be running a non-installed python
# from a different directory.
if _PYTHON_BUILD and os.name == "posix":
base = _PROJECT_BASE
try:
cwd = os.getcwd()
except OSError:
cwd = None
if (not os.path.isabs(_CONFIG_VARS['srcdir']) and
base != cwd):
# srcdir is relative and we are not in the same directory
# as the executable. Assume executable is in the build
# directory and make srcdir absolute.
srcdir = os.path.join(base, _CONFIG_VARS['srcdir'])
_CONFIG_VARS['srcdir'] = os.path.normpath(srcdir)
if sys.platform == 'darwin':
kernel_version = os.uname()[2] # Kernel version (8.4.3)
major_version = int(kernel_version.split('.')[0])
if major_version < 8:
# On Mac OS X before 10.4, check if -arch and -isysroot
# are in CFLAGS or LDFLAGS and remove them if they are.
# This is needed when building extensions on a 10.3 system
# using a universal build of python.
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _CONFIG_VARS[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = re.sub('-isysroot [^ \t]*', ' ', flags)
_CONFIG_VARS[key] = flags
else:
# Allow the user to override the architecture flags using
# an environment variable.
# NOTE: This name was introduced by Apple in OSX 10.5 and
# is used by several scripting languages distributed with
# that OS release.
if 'ARCHFLAGS' in os.environ:
arch = os.environ['ARCHFLAGS']
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _CONFIG_VARS[key]
flags = re.sub('-arch\s+\w+\s', ' ', flags)
flags = flags + ' ' + arch
_CONFIG_VARS[key] = flags
# If we're on OSX 10.5 or later and the user tries to
# compiles an extension using an SDK that is not present
# on the current machine it is better to not use an SDK
# than to fail.
#
# The major usecase for this is users using a Python.org
# binary installer on OSX 10.6: that installer uses
# the 10.4u SDK, but that SDK is not installed by default
# when you install Xcode.
#
CFLAGS = _CONFIG_VARS.get('CFLAGS', '')
m = re.search('-isysroot\s+(\S+)', CFLAGS)
if m is not None:
sdk = m.group(1)
if not os.path.exists(sdk):
for key in ('LDFLAGS', 'BASECFLAGS',
# a number of derived variables. These need to be
# patched up as well.
'CFLAGS', 'PY_CFLAGS', 'BLDSHARED'):
flags = _CONFIG_VARS[key]
flags = re.sub('-isysroot\s+\S+(\s|$)', ' ', flags)
_CONFIG_VARS[key] = flags
if args:
vals = []
for name in args:
vals.append(_CONFIG_VARS.get(name))
return vals
else:
return _CONFIG_VARS
def get_config_var(name):
"""Return the value of a single variable using the dictionary returned by
'get_config_vars()'.
Equivalent to get_config_vars().get(name)
"""
return get_config_vars().get(name)
def get_platform():
"""Return a string that identifies the current platform.
This is used mainly to distinguish platform-specific build directories and
platform-specific built distributions. Typically includes the OS name
and version and the architecture (as supplied by 'os.uname()'),
although the exact information included depends on the OS; eg. for IRIX
the architecture isn't particularly important (IRIX only runs on SGI
hardware), but for Linux the kernel version isn't particularly
important.
Examples of returned values:
linux-i586
linux-alpha (?)
solaris-2.6-sun4u
irix-5.3
irix64-6.2
Windows will return one of:
win-amd64 (64bit Windows on AMD64 (aka x86_64, Intel64, EM64T, etc)
win-ia64 (64bit Windows on Itanium)
win32 (all others - specifically, sys.platform is returned)
For other non-POSIX platforms, currently just returns 'sys.platform'.
"""
if os.name == 'nt':
# sniff sys.version for architecture.
prefix = " bit ("
i = sys.version.find(prefix)
if i == -1:
return sys.platform
j = sys.version.find(")", i)
look = sys.version[i+len(prefix):j].lower()
if look == 'amd64':
return 'win-amd64'
if look == 'itanium':
return 'win-ia64'
return sys.platform
if os.name != "posix" or not hasattr(os, 'uname'):
# XXX what about the architecture? NT is Intel or Alpha,
# Mac OS is M68k or PPC, etc.
return sys.platform
# Try to distinguish various flavours of Unix
osname, host, release, version, machine = os.uname()
# Convert the OS name to lowercase, remove '/' characters
# (to accommodate BSD/OS), and translate spaces (for "Power Macintosh")
osname = osname.lower().replace('/', '')
machine = machine.replace(' ', '_')
machine = machine.replace('/', '-')
if osname[:5] == "linux":
# At least on Linux/Intel, 'machine' is the processor --
# i386, etc.
# XXX what about Alpha, SPARC, etc?
return "%s-%s" % (osname, machine)
elif osname[:5] == "sunos":
if release[0] >= "5": # SunOS 5 == Solaris 2
osname = "solaris"
release = "%d.%s" % (int(release[0]) - 3, release[2:])
# fall through to standard osname-release-machine representation
elif osname[:4] == "irix": # could be "irix64"!
return "%s-%s" % (osname, release)
elif osname[:3] == "aix":
return "%s-%s.%s" % (osname, version, release)
elif osname[:6] == "cygwin":
osname = "cygwin"
rel_re = re.compile(r'[\d.]+')
m = rel_re.match(release)
if m:
release = m.group()
elif osname[:6] == "darwin":
#
# For our purposes, we'll assume that the system version from
# distutils' perspective is what MACOSX_DEPLOYMENT_TARGET is set
# to. This makes the compatibility story a bit more sane because the
# machine is going to compile and link as if it were
# MACOSX_DEPLOYMENT_TARGET.
cfgvars = get_config_vars()
macver = cfgvars.get('MACOSX_DEPLOYMENT_TARGET')
if True:
# Always calculate the release of the running machine,
# needed to determine if we can build fat binaries or not.
macrelease = macver
# Get the system version. Reading this plist is a documented
# way to get the system version (see the documentation for
# the Gestalt Manager)
try:
f = open('/System/Library/CoreServices/SystemVersion.plist')
except IOError:
# We're on a plain darwin box, fall back to the default
# behaviour.
pass
else:
try:
m = re.search(r'<key>ProductUserVisibleVersion</key>\s*'
r'<string>(.*?)</string>', f.read())
finally:
f.close()
if m is not None:
macrelease = '.'.join(m.group(1).split('.')[:2])
# else: fall back to the default behaviour
if not macver:
macver = macrelease
if macver:
release = macver
osname = "macosx"
if ((macrelease + '.') >= '10.4.' and
'-arch' in get_config_vars().get('CFLAGS', '').strip()):
# The universal build will build fat binaries, but not on
# systems before 10.4
#
# Try to detect 4-way universal builds, those have machine-type
# 'universal' instead of 'fat'.
machine = 'fat'
cflags = get_config_vars().get('CFLAGS')
archs = re.findall('-arch\s+(\S+)', cflags)
archs = tuple(sorted(set(archs)))
if len(archs) == 1:
machine = archs[0]
elif archs == ('i386', 'ppc'):
machine = 'fat'
elif archs == ('i386', 'x86_64'):
machine = 'intel'
elif archs == ('i386', 'ppc', 'x86_64'):
machine = 'fat3'
elif archs == ('ppc64', 'x86_64'):
machine = 'fat64'
elif archs == ('i386', 'ppc', 'ppc64', 'x86_64'):
machine = 'universal'
else:
raise ValueError(
"Don't know machine value for archs=%r" % (archs,))
elif machine == 'i386':
# On OSX the machine type returned by uname is always the
# 32-bit variant, even if the executable architecture is
# the 64-bit variant
if sys.maxsize >= 2**32:
machine = 'x86_64'
elif machine in ('PowerPC', 'Power_Macintosh'):
# Pick a sane name for the PPC architecture.
# See 'i386' case
if sys.maxsize >= 2**32:
machine = 'ppc64'
else:
machine = 'ppc'
return "%s-%s-%s" % (osname, release, machine)
def get_python_version():
return _PY_VERSION_SHORT
def _print_dict(title, data):
for index, (key, value) in enumerate(sorted(data.items())):
if index == 0:
print('%s: ' % (title))
print('\t%s = "%s"' % (key, value))
def _main():
"""Display all information sysconfig detains."""
print('Platform: "%s"' % get_platform())
print('Python version: "%s"' % get_python_version())
print('Current installation scheme: "%s"' % _get_default_scheme())
print()
_print_dict('Paths', get_paths())
print()
_print_dict('Variables', get_config_vars())
if __name__ == '__main__':
_main()

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2013 Vinay Sajip.
# Licensed to the Python Software Foundation under a contributor agreement.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
import hashlib
import logging
import os
import shutil
import subprocess
import tempfile
try:
from threading import Thread
except ImportError:
from dummy_threading import Thread
from . import DistlibException
from .compat import (HTTPBasicAuthHandler, Request, HTTPPasswordMgr,
urlparse, build_opener, string_types)
from .util import cached_property, zip_dir, ServerProxy
logger = logging.getLogger(__name__)
DEFAULT_INDEX = 'https://pypi.python.org/pypi'
DEFAULT_REALM = 'pypi'
class PackageIndex(object):
"""
This class represents a package index compatible with PyPI, the Python
Package Index.
"""
boundary = b'----------ThIs_Is_tHe_distlib_index_bouNdaRY_$'
def __init__(self, url=None):
"""
Initialise an instance.
:param url: The URL of the index. If not specified, the URL for PyPI is
used.
"""
self.url = url or DEFAULT_INDEX
self.read_configuration()
scheme, netloc, path, params, query, frag = urlparse(self.url)
if params or query or frag or scheme not in ('http', 'https'):
raise DistlibException('invalid repository: %s' % self.url)
self.password_handler = None
self.ssl_verifier = None
self.gpg = None
self.gpg_home = None
self.rpc_proxy = None
with open(os.devnull, 'w') as sink:
for s in ('gpg2', 'gpg'):
try:
rc = subprocess.check_call([s, '--version'], stdout=sink,
stderr=sink)
if rc == 0:
self.gpg = s
break
except OSError:
pass
def _get_pypirc_command(self):
"""
Get the distutils command for interacting with PyPI configurations.
:return: the command.
"""
from distutils.core import Distribution
from distutils.config import PyPIRCCommand
d = Distribution()
return PyPIRCCommand(d)
def read_configuration(self):
"""
Read the PyPI access configuration as supported by distutils, getting
PyPI to do the acutal work. This populates ``username``, ``password``,
``realm`` and ``url`` attributes from the configuration.
"""
# get distutils to do the work
c = self._get_pypirc_command()
c.repository = self.url
cfg = c._read_pypirc()
self.username = cfg.get('username')
self.password = cfg.get('password')
self.realm = cfg.get('realm', 'pypi')
self.url = cfg.get('repository', self.url)
def save_configuration(self):
"""
Save the PyPI access configuration. You must have set ``username`` and
``password`` attributes before calling this method.
Again, distutils is used to do the actual work.
"""
self.check_credentials()
# get distutils to do the work
c = self._get_pypirc_command()
c._store_pypirc(self.username, self.password)
def check_credentials(self):
"""
Check that ``username`` and ``password`` have been set, and raise an
exception if not.
"""
if self.username is None or self.password is None:
raise DistlibException('username and password must be set')
pm = HTTPPasswordMgr()
_, netloc, _, _, _, _ = urlparse(self.url)
pm.add_password(self.realm, netloc, self.username, self.password)
self.password_handler = HTTPBasicAuthHandler(pm)
def register(self, metadata):
"""
Register a distribution on PyPI, using the provided metadata.
:param metadata: A :class:`Metadata` instance defining at least a name
and version number for the distribution to be
registered.
:return: The HTTP response received from PyPI upon submission of the
request.
"""
self.check_credentials()
metadata.validate()
d = metadata.todict()
d[':action'] = 'verify'
request = self.encode_request(d.items(), [])
response = self.send_request(request)
d[':action'] = 'submit'
request = self.encode_request(d.items(), [])
return self.send_request(request)
def _reader(self, name, stream, outbuf):
"""
Thread runner for reading lines of from a subprocess into a buffer.
:param name: The logical name of the stream (used for logging only).
:param stream: The stream to read from. This will typically a pipe
connected to the output stream of a subprocess.
:param outbuf: The list to append the read lines to.
"""
while True:
s = stream.readline()
if not s:
break
s = s.decode('utf-8').rstrip()
outbuf.append(s)
logger.debug('%s: %s' % (name, s))
stream.close()
def get_sign_command(self, filename, signer, sign_password,
keystore=None):
"""
Return a suitable command for signing a file.
:param filename: The pathname to the file to be signed.
:param signer: The identifier of the signer of the file.
:param sign_password: The passphrase for the signer's
private key used for signing.
:param keystore: The path to a directory which contains the keys
used in verification. If not specified, the
instance's ``gpg_home`` attribute is used instead.
:return: The signing command as a list suitable to be
passed to :class:`subprocess.Popen`.
"""
cmd = [self.gpg, '--status-fd', '2', '--no-tty']
if keystore is None:
keystore = self.gpg_home
if keystore:
cmd.extend(['--homedir', keystore])
if sign_password is not None:
cmd.extend(['--batch', '--passphrase-fd', '0'])
td = tempfile.mkdtemp()
sf = os.path.join(td, os.path.basename(filename) + '.asc')
cmd.extend(['--detach-sign', '--armor', '--local-user',
signer, '--output', sf, filename])
logger.debug('invoking: %s', ' '.join(cmd))
return cmd, sf
def run_command(self, cmd, input_data=None):
"""
Run a command in a child process , passing it any input data specified.
:param cmd: The command to run.
:param input_data: If specified, this must be a byte string containing
data to be sent to the child process.
:return: A tuple consisting of the subprocess' exit code, a list of
lines read from the subprocess' ``stdout``, and a list of
lines read from the subprocess' ``stderr``.
"""
kwargs = {
'stdout': subprocess.PIPE,
'stderr': subprocess.PIPE,
}
if input_data is not None:
kwargs['stdin'] = subprocess.PIPE
stdout = []
stderr = []
p = subprocess.Popen(cmd, **kwargs)
# We don't use communicate() here because we may need to
# get clever with interacting with the command
t1 = Thread(target=self._reader, args=('stdout', p.stdout, stdout))
t1.start()
t2 = Thread(target=self._reader, args=('stderr', p.stderr, stderr))
t2.start()
if input_data is not None:
p.stdin.write(input_data)
p.stdin.close()
p.wait()
t1.join()
t2.join()
return p.returncode, stdout, stderr
def sign_file(self, filename, signer, sign_password, keystore=None):
"""
Sign a file.
:param filename: The pathname to the file to be signed.
:param signer: The identifier of the signer of the file.
:param sign_password: The passphrase for the signer's
private key used for signing.
:param keystore: The path to a directory which contains the keys
used in signing. If not specified, the instance's
``gpg_home`` attribute is used instead.
:return: The absolute pathname of the file where the signature is
stored.
"""
cmd, sig_file = self.get_sign_command(filename, signer, sign_password,
keystore)
rc, stdout, stderr = self.run_command(cmd,
sign_password.encode('utf-8'))
if rc != 0:
raise DistlibException('sign command failed with error '
'code %s' % rc)
return sig_file
def upload_file(self, metadata, filename, signer=None, sign_password=None,
filetype='sdist', pyversion='source', keystore=None):
"""
Upload a release file to the index.
:param metadata: A :class:`Metadata` instance defining at least a name
and version number for the file to be uploaded.
:param filename: The pathname of the file to be uploaded.
:param signer: The identifier of the signer of the file.
:param sign_password: The passphrase for the signer's
private key used for signing.
:param filetype: The type of the file being uploaded. This is the
distutils command which produced that file, e.g.
``sdist`` or ``bdist_wheel``.
:param pyversion: The version of Python which the release relates
to. For code compatible with any Python, this would
be ``source``, otherwise it would be e.g. ``3.2``.
:param keystore: The path to a directory which contains the keys
used in signing. If not specified, the instance's
``gpg_home`` attribute is used instead.
:return: The HTTP response received from PyPI upon submission of the
request.
"""
self.check_credentials()
if not os.path.exists(filename):
raise DistlibException('not found: %s' % filename)
metadata.validate()
d = metadata.todict()
sig_file = None
if signer:
if not self.gpg:
logger.warning('no signing program available - not signed')
else:
sig_file = self.sign_file(filename, signer, sign_password,
keystore)
with open(filename, 'rb') as f:
file_data = f.read()
md5_digest = hashlib.md5(file_data).hexdigest()
sha256_digest = hashlib.sha256(file_data).hexdigest()
d.update({
':action': 'file_upload',
'protcol_version': '1',
'filetype': filetype,
'pyversion': pyversion,
'md5_digest': md5_digest,
'sha256_digest': sha256_digest,
})
files = [('content', os.path.basename(filename), file_data)]
if sig_file:
with open(sig_file, 'rb') as f:
sig_data = f.read()
files.append(('gpg_signature', os.path.basename(sig_file),
sig_data))
shutil.rmtree(os.path.dirname(sig_file))
request = self.encode_request(d.items(), files)
return self.send_request(request)
def upload_documentation(self, metadata, doc_dir):
"""
Upload documentation to the index.
:param metadata: A :class:`Metadata` instance defining at least a name
and version number for the documentation to be
uploaded.
:param doc_dir: The pathname of the directory which contains the
documentation. This should be the directory that
contains the ``index.html`` for the documentation.
:return: The HTTP response received from PyPI upon submission of the
request.
"""
self.check_credentials()
if not os.path.isdir(doc_dir):
raise DistlibException('not a directory: %r' % doc_dir)
fn = os.path.join(doc_dir, 'index.html')
if not os.path.exists(fn):
raise DistlibException('not found: %r' % fn)
metadata.validate()
name, version = metadata.name, metadata.version
zip_data = zip_dir(doc_dir).getvalue()
fields = [(':action', 'doc_upload'),
('name', name), ('version', version)]
files = [('content', name, zip_data)]
request = self.encode_request(fields, files)
return self.send_request(request)
def get_verify_command(self, signature_filename, data_filename,
keystore=None):
"""
Return a suitable command for verifying a file.
:param signature_filename: The pathname to the file containing the
signature.
:param data_filename: The pathname to the file containing the
signed data.
:param keystore: The path to a directory which contains the keys
used in verification. If not specified, the
instance's ``gpg_home`` attribute is used instead.
:return: The verifying command as a list suitable to be
passed to :class:`subprocess.Popen`.
"""
cmd = [self.gpg, '--status-fd', '2', '--no-tty']
if keystore is None:
keystore = self.gpg_home
if keystore:
cmd.extend(['--homedir', keystore])
cmd.extend(['--verify', signature_filename, data_filename])
logger.debug('invoking: %s', ' '.join(cmd))
return cmd
def verify_signature(self, signature_filename, data_filename,
keystore=None):
"""
Verify a signature for a file.
:param signature_filename: The pathname to the file containing the
signature.
:param data_filename: The pathname to the file containing the
signed data.
:param keystore: The path to a directory which contains the keys
used in verification. If not specified, the
instance's ``gpg_home`` attribute is used instead.
:return: True if the signature was verified, else False.
"""
if not self.gpg:
raise DistlibException('verification unavailable because gpg '
'unavailable')
cmd = self.get_verify_command(signature_filename, data_filename,
keystore)
rc, stdout, stderr = self.run_command(cmd)
if rc not in (0, 1):
raise DistlibException('verify command failed with error '
'code %s' % rc)
return rc == 0
def download_file(self, url, destfile, digest=None, reporthook=None):
"""
This is a convenience method for downloading a file from an URL.
Normally, this will be a file from the index, though currently
no check is made for this (i.e. a file can be downloaded from
anywhere).
The method is just like the :func:`urlretrieve` function in the
standard library, except that it allows digest computation to be
done during download and checking that the downloaded data
matched any expected value.
:param url: The URL of the file to be downloaded (assumed to be
available via an HTTP GET request).
:param destfile: The pathname where the downloaded file is to be
saved.
:param digest: If specified, this must be a (hasher, value)
tuple, where hasher is the algorithm used (e.g.
``'md5'``) and ``value`` is the expected value.
:param reporthook: The same as for :func:`urlretrieve` in the
standard library.
"""
if digest is None:
digester = None
logger.debug('No digest specified')
else:
if isinstance(digest, (list, tuple)):
hasher, digest = digest
else:
hasher = 'md5'
digester = getattr(hashlib, hasher)()
logger.debug('Digest specified: %s' % digest)
# The following code is equivalent to urlretrieve.
# We need to do it this way so that we can compute the
# digest of the file as we go.
with open(destfile, 'wb') as dfp:
# addinfourl is not a context manager on 2.x
# so we have to use try/finally
sfp = self.send_request(Request(url))
try:
headers = sfp.info()
blocksize = 8192
size = -1
read = 0
blocknum = 0
if "content-length" in headers:
size = int(headers["Content-Length"])
if reporthook:
reporthook(blocknum, blocksize, size)
while True:
block = sfp.read(blocksize)
if not block:
break
read += len(block)
dfp.write(block)
if digester:
digester.update(block)
blocknum += 1
if reporthook:
reporthook(blocknum, blocksize, size)
finally:
sfp.close()
# check that we got the whole file, if we can
if size >= 0 and read < size:
raise DistlibException(
'retrieval incomplete: got only %d out of %d bytes'
% (read, size))
# if we have a digest, it must match.
if digester:
actual = digester.hexdigest()
if digest != actual:
raise DistlibException('%s digest mismatch for %s: expected '
'%s, got %s' % (hasher, destfile,
digest, actual))
logger.debug('Digest verified: %s', digest)
def send_request(self, req):
"""
Send a standard library :class:`Request` to PyPI and return its
response.
:param req: The request to send.
:return: The HTTP response from PyPI (a standard library HTTPResponse).
"""
handlers = []
if self.password_handler:
handlers.append(self.password_handler)
if self.ssl_verifier:
handlers.append(self.ssl_verifier)
opener = build_opener(*handlers)
return opener.open(req)
def encode_request(self, fields, files):
"""
Encode fields and files for posting to an HTTP server.
:param fields: The fields to send as a list of (fieldname, value)
tuples.
:param files: The files to send as a list of (fieldname, filename,
file_bytes) tuple.
"""
# Adapted from packaging, which in turn was adapted from
# http://code.activestate.com/recipes/146306
parts = []
boundary = self.boundary
for k, values in fields:
if not isinstance(values, (list, tuple)):
values = [values]
for v in values:
parts.extend((
b'--' + boundary,
('Content-Disposition: form-data; name="%s"' %
k).encode('utf-8'),
b'',
v.encode('utf-8')))
for key, filename, value in files:
parts.extend((
b'--' + boundary,
('Content-Disposition: form-data; name="%s"; filename="%s"' %
(key, filename)).encode('utf-8'),
b'',
value))
parts.extend((b'--' + boundary + b'--', b''))
body = b'\r\n'.join(parts)
ct = b'multipart/form-data; boundary=' + boundary
headers = {
'Content-type': ct,
'Content-length': str(len(body))
}
return Request(self.url, body, headers)
def search(self, terms, operator=None):
if isinstance(terms, string_types):
terms = {'name': terms}
if self.rpc_proxy is None:
self.rpc_proxy = ServerProxy(self.url, timeout=3.0)
return self.rpc_proxy.search(terms, operator or 'and')

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012-2013 Python Software Foundation.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
"""
Class representing the list of files in a distribution.
Equivalent to distutils.filelist, but fixes some problems.
"""
import fnmatch
import logging
import os
import re
from . import DistlibException
from .compat import fsdecode
from .util import convert_path
__all__ = ['Manifest']
logger = logging.getLogger(__name__)
# a \ followed by some spaces + EOL
_COLLAPSE_PATTERN = re.compile('\\\w*\n', re.M)
_COMMENTED_LINE = re.compile('#.*?(?=\n)|\n(?=$)', re.M | re.S)
class Manifest(object):
"""A list of files built by on exploring the filesystem and filtered by
applying various patterns to what we find there.
"""
def __init__(self, base=None):
"""
Initialise an instance.
:param base: The base directory to explore under.
"""
self.base = os.path.abspath(os.path.normpath(base or os.getcwd()))
self.prefix = self.base + os.sep
self.allfiles = None
self.files = set()
#
# Public API
#
def findall(self):
"""Find all files under the base and set ``allfiles`` to the absolute
pathnames of files found.
"""
from stat import S_ISREG, S_ISDIR, S_ISLNK
self.allfiles = allfiles = []
root = self.base
stack = [root]
pop = stack.pop
push = stack.append
while stack:
root = pop()
names = os.listdir(root)
for name in names:
fullname = os.path.join(root, name)
# Avoid excess stat calls -- just one will do, thank you!
stat = os.stat(fullname)
mode = stat.st_mode
if S_ISREG(mode):
allfiles.append(fsdecode(fullname))
elif S_ISDIR(mode) and not S_ISLNK(mode):
push(fullname)
def add(self, item):
"""
Add a file to the manifest.
:param item: The pathname to add. This can be relative to the base.
"""
if not item.startswith(self.prefix):
item = os.path.join(self.base, item)
self.files.add(os.path.normpath(item))
def add_many(self, items):
"""
Add a list of files to the manifest.
:param items: The pathnames to add. These can be relative to the base.
"""
for item in items:
self.add(item)
def sorted(self, wantdirs=False):
"""
Return sorted files in directory order
"""
def add_dir(dirs, d):
dirs.add(d)
logger.debug('add_dir added %s', d)
if d != self.base:
parent, _ = os.path.split(d)
assert parent not in ('', '/')
add_dir(dirs, parent)
result = set(self.files) # make a copy!
if wantdirs:
dirs = set()
for f in result:
add_dir(dirs, os.path.dirname(f))
result |= dirs
return [os.path.join(*path_tuple) for path_tuple in
sorted(os.path.split(path) for path in result)]
def clear(self):
"""Clear all collected files."""
self.files = set()
self.allfiles = []
def process_directive(self, directive):
"""
Process a directive which either adds some files from ``allfiles`` to
``files``, or removes some files from ``files``.
:param directive: The directive to process. This should be in a format
compatible with distutils ``MANIFEST.in`` files:
http://docs.python.org/distutils/sourcedist.html#commands
"""
# Parse the line: split it up, make sure the right number of words
# is there, and return the relevant words. 'action' is always
# defined: it's the first word of the line. Which of the other
# three are defined depends on the action; it'll be either
# patterns, (dir and patterns), or (dirpattern).
action, patterns, thedir, dirpattern = self._parse_directive(directive)
# OK, now we know that the action is valid and we have the
# right number of words on the line for that action -- so we
# can proceed with minimal error-checking.
if action == 'include':
for pattern in patterns:
if not self._include_pattern(pattern, anchor=True):
logger.warning('no files found matching %r', pattern)
elif action == 'exclude':
for pattern in patterns:
found = self._exclude_pattern(pattern, anchor=True)
#if not found:
# logger.warning('no previously-included files '
# 'found matching %r', pattern)
elif action == 'global-include':
for pattern in patterns:
if not self._include_pattern(pattern, anchor=False):
logger.warning('no files found matching %r '
'anywhere in distribution', pattern)
elif action == 'global-exclude':
for pattern in patterns:
found = self._exclude_pattern(pattern, anchor=False)
#if not found:
# logger.warning('no previously-included files '
# 'matching %r found anywhere in '
# 'distribution', pattern)
elif action == 'recursive-include':
for pattern in patterns:
if not self._include_pattern(pattern, prefix=thedir):
logger.warning('no files found matching %r '
'under directory %r', pattern, thedir)
elif action == 'recursive-exclude':
for pattern in patterns:
found = self._exclude_pattern(pattern, prefix=thedir)
#if not found:
# logger.warning('no previously-included files '
# 'matching %r found under directory %r',
# pattern, thedir)
elif action == 'graft':
if not self._include_pattern(None, prefix=dirpattern):
logger.warning('no directories found matching %r',
dirpattern)
elif action == 'prune':
if not self._exclude_pattern(None, prefix=dirpattern):
logger.warning('no previously-included directories found '
'matching %r', dirpattern)
else: # pragma: no cover
# This should never happen, as it should be caught in
# _parse_template_line
raise DistlibException(
'invalid action %r' % action)
#
# Private API
#
def _parse_directive(self, directive):
"""
Validate a directive.
:param directive: The directive to validate.
:return: A tuple of action, patterns, thedir, dir_patterns
"""
words = directive.split()
if len(words) == 1 and words[0] not in ('include', 'exclude',
'global-include',
'global-exclude',
'recursive-include',
'recursive-exclude',
'graft', 'prune'):
# no action given, let's use the default 'include'
words.insert(0, 'include')
action = words[0]
patterns = thedir = dir_pattern = None
if action in ('include', 'exclude',
'global-include', 'global-exclude'):
if len(words) < 2:
raise DistlibException(
'%r expects <pattern1> <pattern2> ...' % action)
patterns = [convert_path(word) for word in words[1:]]
elif action in ('recursive-include', 'recursive-exclude'):
if len(words) < 3:
raise DistlibException(
'%r expects <dir> <pattern1> <pattern2> ...' % action)
thedir = convert_path(words[1])
patterns = [convert_path(word) for word in words[2:]]
elif action in ('graft', 'prune'):
if len(words) != 2:
raise DistlibException(
'%r expects a single <dir_pattern>' % action)
dir_pattern = convert_path(words[1])
else:
raise DistlibException('unknown action %r' % action)
return action, patterns, thedir, dir_pattern
def _include_pattern(self, pattern, anchor=True, prefix=None,
is_regex=False):
"""Select strings (presumably filenames) from 'self.files' that
match 'pattern', a Unix-style wildcard (glob) pattern.
Patterns are not quite the same as implemented by the 'fnmatch'
module: '*' and '?' match non-special characters, where "special"
is platform-dependent: slash on Unix; colon, slash, and backslash on
DOS/Windows; and colon on Mac OS.
If 'anchor' is true (the default), then the pattern match is more
stringent: "*.py" will match "foo.py" but not "foo/bar.py". If
'anchor' is false, both of these will match.
If 'prefix' is supplied, then only filenames starting with 'prefix'
(itself a pattern) and ending with 'pattern', with anything in between
them, will match. 'anchor' is ignored in this case.
If 'is_regex' is true, 'anchor' and 'prefix' are ignored, and
'pattern' is assumed to be either a string containing a regex or a
regex object -- no translation is done, the regex is just compiled
and used as-is.
Selected strings will be added to self.files.
Return True if files are found.
"""
# XXX docstring lying about what the special chars are?
found = False
pattern_re = self._translate_pattern(pattern, anchor, prefix, is_regex)
# delayed loading of allfiles list
if self.allfiles is None:
self.findall()
for name in self.allfiles:
if pattern_re.search(name):
self.files.add(name)
found = True
return found
def _exclude_pattern(self, pattern, anchor=True, prefix=None,
is_regex=False):
"""Remove strings (presumably filenames) from 'files' that match
'pattern'.
Other parameters are the same as for 'include_pattern()', above.
The list 'self.files' is modified in place. Return True if files are
found.
This API is public to allow e.g. exclusion of SCM subdirs, e.g. when
packaging source distributions
"""
found = False
pattern_re = self._translate_pattern(pattern, anchor, prefix, is_regex)
for f in list(self.files):
if pattern_re.search(f):
self.files.remove(f)
found = True
return found
def _translate_pattern(self, pattern, anchor=True, prefix=None,
is_regex=False):
"""Translate a shell-like wildcard pattern to a compiled regular
expression.
Return the compiled regex. If 'is_regex' true,
then 'pattern' is directly compiled to a regex (if it's a string)
or just returned as-is (assumes it's a regex object).
"""
if is_regex:
if isinstance(pattern, str):
return re.compile(pattern)
else:
return pattern
if pattern:
pattern_re = self._glob_to_re(pattern)
else:
pattern_re = ''
base = re.escape(os.path.join(self.base, ''))
if prefix is not None:
# ditch end of pattern character
empty_pattern = self._glob_to_re('')
prefix_re = self._glob_to_re(prefix)[:-len(empty_pattern)]
sep = os.sep
if os.sep == '\\':
sep = r'\\'
pattern_re = '^' + base + sep.join((prefix_re,
'.*' + pattern_re))
else: # no prefix -- respect anchor flag
if anchor:
pattern_re = '^' + base + pattern_re
return re.compile(pattern_re)
def _glob_to_re(self, pattern):
"""Translate a shell-like glob pattern to a regular expression.
Return a string containing the regex. Differs from
'fnmatch.translate()' in that '*' does not match "special characters"
(which are platform-specific).
"""
pattern_re = fnmatch.translate(pattern)
# '?' and '*' in the glob pattern become '.' and '.*' in the RE, which
# IMHO is wrong -- '?' and '*' aren't supposed to match slash in Unix,
# and by extension they shouldn't match such "special characters" under
# any OS. So change all non-escaped dots in the RE to match any
# character except the special characters (currently: just os.sep).
sep = os.sep
if os.sep == '\\':
# we're using a regex to manipulate a regex, so we need
# to escape the backslash twice
sep = r'\\\\'
escaped = r'\1[^%s]' % sep
pattern_re = re.sub(r'((?<!\\)(\\\\)*)\.', escaped, pattern_re)
return pattern_re

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012-2013 Vinay Sajip.
# Licensed to the Python Software Foundation under a contributor agreement.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
"""Parser for the environment markers micro-language defined in PEP 345."""
import ast
import os
import sys
import platform
from .compat import python_implementation, string_types
from .util import in_venv
__all__ = ['interpret']
class Evaluator(object):
"""
A limited evaluator for Python expressions.
"""
operators = {
'eq': lambda x, y: x == y,
'gt': lambda x, y: x > y,
'gte': lambda x, y: x >= y,
'in': lambda x, y: x in y,
'lt': lambda x, y: x < y,
'lte': lambda x, y: x <= y,
'not': lambda x: not x,
'noteq': lambda x, y: x != y,
'notin': lambda x, y: x not in y,
}
allowed_values = {
'sys_platform': sys.platform,
'python_version': '%s.%s' % sys.version_info[:2],
# parsing sys.platform is not reliable, but there is no other
# way to get e.g. 2.7.2+, and the PEP is defined with sys.version
'python_full_version': sys.version.split(' ', 1)[0],
'os_name': os.name,
'platform_in_venv': str(in_venv()),
'platform_release': platform.release(),
'platform_version': platform.version(),
'platform_machine': platform.machine(),
'platform_python_implementation': python_implementation(),
}
def __init__(self, context=None):
"""
Initialise an instance.
:param context: If specified, names are looked up in this mapping.
"""
self.context = context or {}
self.source = None
def get_fragment(self, offset):
"""
Get the part of the source which is causing a problem.
"""
fragment_len = 10
s = '%r' % (self.source[offset:offset + fragment_len])
if offset + fragment_len < len(self.source):
s += '...'
return s
def get_handler(self, node_type):
"""
Get a handler for the specified AST node type.
"""
return getattr(self, 'do_%s' % node_type, None)
def evaluate(self, node, filename=None):
"""
Evaluate a source string or node, using ``filename`` when
displaying errors.
"""
if isinstance(node, string_types):
self.source = node
kwargs = {'mode': 'eval'}
if filename:
kwargs['filename'] = filename
try:
node = ast.parse(node, **kwargs)
except SyntaxError as e:
s = self.get_fragment(e.offset)
raise SyntaxError('syntax error %s' % s)
node_type = node.__class__.__name__.lower()
handler = self.get_handler(node_type)
if handler is None:
if self.source is None:
s = '(source not available)'
else:
s = self.get_fragment(node.col_offset)
raise SyntaxError("don't know how to evaluate %r %s" % (
node_type, s))
return handler(node)
def get_attr_key(self, node):
assert isinstance(node, ast.Attribute), 'attribute node expected'
return '%s.%s' % (node.value.id, node.attr)
def do_attribute(self, node):
if not isinstance(node.value, ast.Name):
valid = False
else:
key = self.get_attr_key(node)
valid = key in self.context or key in self.allowed_values
if not valid:
raise SyntaxError('invalid expression: %s' % key)
if key in self.context:
result = self.context[key]
else:
result = self.allowed_values[key]
return result
def do_boolop(self, node):
result = self.evaluate(node.values[0])
is_or = node.op.__class__ is ast.Or
is_and = node.op.__class__ is ast.And
assert is_or or is_and
if (is_and and result) or (is_or and not result):
for n in node.values[1:]:
result = self.evaluate(n)
if (is_or and result) or (is_and and not result):
break
return result
def do_compare(self, node):
def sanity_check(lhsnode, rhsnode):
valid = True
if isinstance(lhsnode, ast.Str) and isinstance(rhsnode, ast.Str):
valid = False
#elif (isinstance(lhsnode, ast.Attribute)
# and isinstance(rhsnode, ast.Attribute)):
# klhs = self.get_attr_key(lhsnode)
# krhs = self.get_attr_key(rhsnode)
# valid = klhs != krhs
if not valid:
s = self.get_fragment(node.col_offset)
raise SyntaxError('Invalid comparison: %s' % s)
lhsnode = node.left
lhs = self.evaluate(lhsnode)
result = True
for op, rhsnode in zip(node.ops, node.comparators):
sanity_check(lhsnode, rhsnode)
op = op.__class__.__name__.lower()
if op not in self.operators:
raise SyntaxError('unsupported operation: %r' % op)
rhs = self.evaluate(rhsnode)
result = self.operators[op](lhs, rhs)
if not result:
break
lhs = rhs
lhsnode = rhsnode
return result
def do_expression(self, node):
return self.evaluate(node.body)
def do_name(self, node):
valid = False
if node.id in self.context:
valid = True
result = self.context[node.id]
elif node.id in self.allowed_values:
valid = True
result = self.allowed_values[node.id]
if not valid:
raise SyntaxError('invalid expression: %s' % node.id)
return result
def do_str(self, node):
return node.s
def interpret(marker, execution_context=None):
"""
Interpret a marker and return a result depending on environment.
:param marker: The marker to interpret.
:type marker: str
:param execution_context: The context used for name lookup.
:type execution_context: mapping
"""
return Evaluator(execution_context).evaluate(marker.strip())

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2013 Vinay Sajip.
# Licensed to the Python Software Foundation under a contributor agreement.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
from __future__ import unicode_literals
import bisect
import io
import logging
import os
import pkgutil
import shutil
import sys
import types
import zipimport
from . import DistlibException
from .util import cached_property, get_cache_base, path_to_cache_dir, Cache
logger = logging.getLogger(__name__)
cache = None # created when needed
class ResourceCache(Cache):
def __init__(self, base=None):
if base is None:
# Use native string to avoid issues on 2.x: see Python #20140.
base = os.path.join(get_cache_base(), str('resource-cache'))
super(ResourceCache, self).__init__(base)
def is_stale(self, resource, path):
"""
Is the cache stale for the given resource?
:param resource: The :class:`Resource` being cached.
:param path: The path of the resource in the cache.
:return: True if the cache is stale.
"""
# Cache invalidation is a hard problem :-)
return True
def get(self, resource):
"""
Get a resource into the cache,
:param resource: A :class:`Resource` instance.
:return: The pathname of the resource in the cache.
"""
prefix, path = resource.finder.get_cache_info(resource)
if prefix is None:
result = path
else:
result = os.path.join(self.base, self.prefix_to_dir(prefix), path)
dirname = os.path.dirname(result)
if not os.path.isdir(dirname):
os.makedirs(dirname)
if not os.path.exists(result):
stale = True
else:
stale = self.is_stale(resource, path)
if stale:
# write the bytes of the resource to the cache location
with open(result, 'wb') as f:
f.write(resource.bytes)
return result
class ResourceBase(object):
def __init__(self, finder, name):
self.finder = finder
self.name = name
class Resource(ResourceBase):
"""
A class representing an in-package resource, such as a data file. This is
not normally instantiated by user code, but rather by a
:class:`ResourceFinder` which manages the resource.
"""
is_container = False # Backwards compatibility
def as_stream(self):
"""
Get the resource as a stream.
This is not a property to make it obvious that it returns a new stream
each time.
"""
return self.finder.get_stream(self)
@cached_property
def file_path(self):
global cache
if cache is None:
cache = ResourceCache()
return cache.get(self)
@cached_property
def bytes(self):
return self.finder.get_bytes(self)
@cached_property
def size(self):
return self.finder.get_size(self)
class ResourceContainer(ResourceBase):
is_container = True # Backwards compatibility
@cached_property
def resources(self):
return self.finder.get_resources(self)
class ResourceFinder(object):
"""
Resource finder for file system resources.
"""
def __init__(self, module):
self.module = module
self.loader = getattr(module, '__loader__', None)
self.base = os.path.dirname(getattr(module, '__file__', ''))
def _adjust_path(self, path):
return os.path.realpath(path)
def _make_path(self, resource_name):
# Issue #50: need to preserve type of path on Python 2.x
# like os.path._get_sep
if isinstance(resource_name, bytes): # should only happen on 2.x
sep = b'/'
else:
sep = '/'
parts = resource_name.split(sep)
parts.insert(0, self.base)
result = os.path.join(*parts)
return self._adjust_path(result)
def _find(self, path):
return os.path.exists(path)
def get_cache_info(self, resource):
return None, resource.path
def find(self, resource_name):
path = self._make_path(resource_name)
if not self._find(path):
result = None
else:
if self._is_directory(path):
result = ResourceContainer(self, resource_name)
else:
result = Resource(self, resource_name)
result.path = path
return result
def get_stream(self, resource):
return open(resource.path, 'rb')
def get_bytes(self, resource):
with open(resource.path, 'rb') as f:
return f.read()
def get_size(self, resource):
return os.path.getsize(resource.path)
def get_resources(self, resource):
def allowed(f):
return f != '__pycache__' and not f.endswith(('.pyc', '.pyo'))
return set([f for f in os.listdir(resource.path) if allowed(f)])
def is_container(self, resource):
return self._is_directory(resource.path)
_is_directory = staticmethod(os.path.isdir)
class ZipResourceFinder(ResourceFinder):
"""
Resource finder for resources in .zip files.
"""
def __init__(self, module):
super(ZipResourceFinder, self).__init__(module)
archive = self.loader.archive
self.prefix_len = 1 + len(archive)
# PyPy doesn't have a _files attr on zipimporter, and you can't set one
if hasattr(self.loader, '_files'):
self._files = self.loader._files
else:
self._files = zipimport._zip_directory_cache[archive]
self.index = sorted(self._files)
def _adjust_path(self, path):
return path
def _find(self, path):
path = path[self.prefix_len:]
if path in self._files:
result = True
else:
if path and path[-1] != os.sep:
path = path + os.sep
i = bisect.bisect(self.index, path)
try:
result = self.index[i].startswith(path)
except IndexError:
result = False
if not result:
logger.debug('_find failed: %r %r', path, self.loader.prefix)
else:
logger.debug('_find worked: %r %r', path, self.loader.prefix)
return result
def get_cache_info(self, resource):
prefix = self.loader.archive
path = resource.path[1 + len(prefix):]
return prefix, path
def get_bytes(self, resource):
return self.loader.get_data(resource.path)
def get_stream(self, resource):
return io.BytesIO(self.get_bytes(resource))
def get_size(self, resource):
path = resource.path[self.prefix_len:]
return self._files[path][3]
def get_resources(self, resource):
path = resource.path[self.prefix_len:]
if path and path[-1] != os.sep:
path += os.sep
plen = len(path)
result = set()
i = bisect.bisect(self.index, path)
while i < len(self.index):
if not self.index[i].startswith(path):
break
s = self.index[i][plen:]
result.add(s.split(os.sep, 1)[0]) # only immediate children
i += 1
return result
def _is_directory(self, path):
path = path[self.prefix_len:]
if path and path[-1] != os.sep:
path += os.sep
i = bisect.bisect(self.index, path)
try:
result = self.index[i].startswith(path)
except IndexError:
result = False
return result
_finder_registry = {
type(None): ResourceFinder,
zipimport.zipimporter: ZipResourceFinder
}
try:
import _frozen_importlib
_finder_registry[_frozen_importlib.SourceFileLoader] = ResourceFinder
_finder_registry[_frozen_importlib.FileFinder] = ResourceFinder
except (ImportError, AttributeError):
pass
def register_finder(loader, finder_maker):
_finder_registry[type(loader)] = finder_maker
_finder_cache = {}
def finder(package):
"""
Return a resource finder for a package.
:param package: The name of the package.
:return: A :class:`ResourceFinder` instance for the package.
"""
if package in _finder_cache:
result = _finder_cache[package]
else:
if package not in sys.modules:
__import__(package)
module = sys.modules[package]
path = getattr(module, '__path__', None)
if path is None:
raise DistlibException('You cannot get a finder for a module, '
'only for a package')
loader = getattr(module, '__loader__', None)
finder_maker = _finder_registry.get(type(loader))
if finder_maker is None:
raise DistlibException('Unable to locate finder for %r' % package)
result = finder_maker(module)
_finder_cache[package] = result
return result
_dummy_module = types.ModuleType(str('__dummy__'))
def finder_for_path(path):
"""
Return a resource finder for a path, which should represent a container.
:param path: The path.
:return: A :class:`ResourceFinder` instance for the path.
"""
result = None
# calls any path hooks, gets importer into cache
pkgutil.get_importer(path)
loader = sys.path_importer_cache.get(path)
finder = _finder_registry.get(type(loader))
if finder:
module = _dummy_module
module.__file__ = os.path.join(path, '')
module.__loader__ = loader
result = finder(module)
return result

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2013-2014 Vinay Sajip.
# Licensed to the Python Software Foundation under a contributor agreement.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
from io import BytesIO
import logging
import os
import re
import struct
import sys
from .compat import sysconfig, detect_encoding, ZipFile
from .resources import finder
from .util import (FileOperator, get_export_entry, convert_path,
get_executable, in_venv)
logger = logging.getLogger(__name__)
_DEFAULT_MANIFEST = '''
<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
<assemblyIdentity version="1.0.0.0"
processorArchitecture="X86"
name="%s"
type="win32"/>
<!-- Identify the application security requirements. -->
<trustInfo xmlns="urn:schemas-microsoft-com:asm.v3">
<security>
<requestedPrivileges>
<requestedExecutionLevel level="asInvoker" uiAccess="false"/>
</requestedPrivileges>
</security>
</trustInfo>
</assembly>'''.strip()
# check if Python is called on the first line with this expression
FIRST_LINE_RE = re.compile(b'^#!.*pythonw?[0-9.]*([ \t].*)?$')
SCRIPT_TEMPLATE = '''# -*- coding: utf-8 -*-
if __name__ == '__main__':
import sys, re
def _resolve(module, func):
__import__(module)
mod = sys.modules[module]
parts = func.split('.')
result = getattr(mod, parts.pop(0))
for p in parts:
result = getattr(result, p)
return result
try:
sys.argv[0] = re.sub(r'(-script\.pyw|\.exe)?$', '', sys.argv[0])
func = _resolve('%(module)s', '%(func)s')
rc = func() # None interpreted as 0
except Exception as e: # only supporting Python >= 2.6
sys.stderr.write('%%s\\n' %% e)
rc = 1
sys.exit(rc)
'''
class ScriptMaker(object):
"""
A class to copy or create scripts from source scripts or callable
specifications.
"""
script_template = SCRIPT_TEMPLATE
executable = None # for shebangs
def __init__(self, source_dir, target_dir, add_launchers=True,
dry_run=False, fileop=None):
self.source_dir = source_dir
self.target_dir = target_dir
self.add_launchers = add_launchers
self.force = False
self.clobber = False
# It only makes sense to set mode bits on POSIX.
self.set_mode = (os.name == 'posix')
self.variants = set(('', 'X.Y'))
self._fileop = fileop or FileOperator(dry_run)
def _get_alternate_executable(self, executable, options):
if options.get('gui', False) and os.name == 'nt':
dn, fn = os.path.split(executable)
fn = fn.replace('python', 'pythonw')
executable = os.path.join(dn, fn)
return executable
def _get_shebang(self, encoding, post_interp=b'', options=None):
enquote = True
if self.executable:
executable = self.executable
enquote = False # assume this will be taken care of
elif not sysconfig.is_python_build():
executable = get_executable()
elif in_venv():
executable = os.path.join(sysconfig.get_path('scripts'),
'python%s' % sysconfig.get_config_var('EXE'))
else:
executable = os.path.join(
sysconfig.get_config_var('BINDIR'),
'python%s%s' % (sysconfig.get_config_var('VERSION'),
sysconfig.get_config_var('EXE')))
if options:
executable = self._get_alternate_executable(executable, options)
# If the user didn't specify an executable, it may be necessary to
# cater for executable paths with spaces (not uncommon on Windows)
if enquote and ' ' in executable:
executable = '"%s"' % executable
# Issue #51: don't use fsencode, since we later try to
# check that the shebang is decodable using utf-8.
executable = executable.encode('utf-8')
# in case of IronPython, play safe and enable frames support
if (sys.platform == 'cli' and '-X:Frames' not in post_interp
and '-X:FullFrames' not in post_interp):
post_interp += b' -X:Frames'
shebang = b'#!' + executable + post_interp + b'\n'
# Python parser starts to read a script using UTF-8 until
# it gets a #coding:xxx cookie. The shebang has to be the
# first line of a file, the #coding:xxx cookie cannot be
# written before. So the shebang has to be decodable from
# UTF-8.
try:
shebang.decode('utf-8')
except UnicodeDecodeError:
raise ValueError(
'The shebang (%r) is not decodable from utf-8' % shebang)
# If the script is encoded to a custom encoding (use a
# #coding:xxx cookie), the shebang has to be decodable from
# the script encoding too.
if encoding != 'utf-8':
try:
shebang.decode(encoding)
except UnicodeDecodeError:
raise ValueError(
'The shebang (%r) is not decodable '
'from the script encoding (%r)' % (shebang, encoding))
return shebang
def _get_script_text(self, entry):
return self.script_template % dict(module=entry.prefix,
func=entry.suffix)
manifest = _DEFAULT_MANIFEST
def get_manifest(self, exename):
base = os.path.basename(exename)
return self.manifest % base
def _write_script(self, names, shebang, script_bytes, filenames, ext):
use_launcher = self.add_launchers and os.name == 'nt'
linesep = os.linesep.encode('utf-8')
if not use_launcher:
script_bytes = shebang + linesep + script_bytes
else:
if ext == 'py':
launcher = self._get_launcher('t')
else:
launcher = self._get_launcher('w')
stream = BytesIO()
with ZipFile(stream, 'w') as zf:
zf.writestr('__main__.py', script_bytes)
zip_data = stream.getvalue()
script_bytes = launcher + shebang + linesep + zip_data
for name in names:
outname = os.path.join(self.target_dir, name)
if use_launcher:
n, e = os.path.splitext(outname)
if e.startswith('.py'):
outname = n
outname = '%s.exe' % outname
try:
self._fileop.write_binary_file(outname, script_bytes)
except Exception:
# Failed writing an executable - it might be in use.
logger.warning('Failed to write executable - trying to '
'use .deleteme logic')
dfname = '%s.deleteme' % outname
if os.path.exists(dfname):
os.remove(dfname) # Not allowed to fail here
os.rename(outname, dfname) # nor here
self._fileop.write_binary_file(outname, script_bytes)
logger.debug('Able to replace executable using '
'.deleteme logic')
try:
os.remove(dfname)
except Exception:
pass # still in use - ignore error
else:
if os.name == 'nt' and not outname.endswith('.' + ext):
outname = '%s.%s' % (outname, ext)
if os.path.exists(outname) and not self.clobber:
logger.warning('Skipping existing file %s', outname)
continue
self._fileop.write_binary_file(outname, script_bytes)
if self.set_mode:
self._fileop.set_executable_mode([outname])
filenames.append(outname)
def _make_script(self, entry, filenames, options=None):
post_interp = b''
if options:
args = options.get('interpreter_args', [])
if args:
args = ' %s' % ' '.join(args)
post_interp = args.encode('utf-8')
shebang = self._get_shebang('utf-8', post_interp, options=options)
script = self._get_script_text(entry).encode('utf-8')
name = entry.name
scriptnames = set()
if '' in self.variants:
scriptnames.add(name)
if 'X' in self.variants:
scriptnames.add('%s%s' % (name, sys.version[0]))
if 'X.Y' in self.variants:
scriptnames.add('%s-%s' % (name, sys.version[:3]))
if options and options.get('gui', False):
ext = 'pyw'
else:
ext = 'py'
self._write_script(scriptnames, shebang, script, filenames, ext)
def _copy_script(self, script, filenames):
adjust = False
script = os.path.join(self.source_dir, convert_path(script))
outname = os.path.join(self.target_dir, os.path.basename(script))
if not self.force and not self._fileop.newer(script, outname):
logger.debug('not copying %s (up-to-date)', script)
return
# Always open the file, but ignore failures in dry-run mode --
# that way, we'll get accurate feedback if we can read the
# script.
try:
f = open(script, 'rb')
except IOError:
if not self.dry_run:
raise
f = None
else:
encoding, lines = detect_encoding(f.readline)
f.seek(0)
first_line = f.readline()
if not first_line:
logger.warning('%s: %s is an empty file (skipping)',
self.get_command_name(), script)
return
match = FIRST_LINE_RE.match(first_line.replace(b'\r\n', b'\n'))
if match:
adjust = True
post_interp = match.group(1) or b''
if not adjust:
if f:
f.close()
self._fileop.copy_file(script, outname)
if self.set_mode:
self._fileop.set_executable_mode([outname])
filenames.append(outname)
else:
logger.info('copying and adjusting %s -> %s', script,
self.target_dir)
if not self._fileop.dry_run:
shebang = self._get_shebang(encoding, post_interp)
if b'pythonw' in first_line:
ext = 'pyw'
else:
ext = 'py'
n = os.path.basename(outname)
self._write_script([n], shebang, f.read(), filenames, ext)
if f:
f.close()
@property
def dry_run(self):
return self._fileop.dry_run
@dry_run.setter
def dry_run(self, value):
self._fileop.dry_run = value
if os.name == 'nt':
# Executable launcher support.
# Launchers are from https://bitbucket.org/vinay.sajip/simple_launcher/
def _get_launcher(self, kind):
if struct.calcsize('P') == 8: # 64-bit
bits = '64'
else:
bits = '32'
name = '%s%s.exe' % (kind, bits)
# Issue 31: don't hardcode an absolute package name, but
# determine it relative to the current package
distlib_package = __name__.rsplit('.', 1)[0]
result = finder(distlib_package).find(name).bytes
return result
# Public API follows
def make(self, specification, options=None):
"""
Make a script.
:param specification: The specification, which is either a valid export
entry specification (to make a script from a
callable) or a filename (to make a script by
copying from a source location).
:param options: A dictionary of options controlling script generation.
:return: A list of all absolute pathnames written to.
"""
filenames = []
entry = get_export_entry(specification)
if entry is None:
self._copy_script(specification, filenames)
else:
self._make_script(entry, filenames, options=options)
return filenames
def make_multiple(self, specifications, options=None):
"""
Take a list of specifications and make scripts from them,
:param specifications: A list of specifications.
:return: A list of all absolute pathnames written to,
"""
filenames = []
for specification in specifications:
filenames.extend(self.make(specification, options))
return filenames

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2012-2014 The Python Software Foundation.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
"""
Implementation of a flexible versioning scheme providing support for PEP-386,
distribute-compatible and semantic versioning.
"""
import logging
import re
from .compat import string_types
__all__ = ['NormalizedVersion', 'NormalizedMatcher',
'LegacyVersion', 'LegacyMatcher',
'SemanticVersion', 'SemanticMatcher',
'UnsupportedVersionError', 'get_scheme']
logger = logging.getLogger(__name__)
class UnsupportedVersionError(ValueError):
"""This is an unsupported version."""
pass
class Version(object):
def __init__(self, s):
self._string = s = s.strip()
self._parts = parts = self.parse(s)
assert isinstance(parts, tuple)
assert len(parts) > 0
def parse(self, s):
raise NotImplementedError('please implement in a subclass')
def _check_compatible(self, other):
if type(self) != type(other):
raise TypeError('cannot compare %r and %r' % (self, other))
def __eq__(self, other):
self._check_compatible(other)
return self._parts == other._parts
def __ne__(self, other):
return not self.__eq__(other)
def __lt__(self, other):
self._check_compatible(other)
return self._parts < other._parts
def __gt__(self, other):
return not (self.__lt__(other) or self.__eq__(other))
def __le__(self, other):
return self.__lt__(other) or self.__eq__(other)
def __ge__(self, other):
return self.__gt__(other) or self.__eq__(other)
# See http://docs.python.org/reference/datamodel#object.__hash__
def __hash__(self):
return hash(self._parts)
def __repr__(self):
return "%s('%s')" % (self.__class__.__name__, self._string)
def __str__(self):
return self._string
@property
def is_prerelease(self):
raise NotImplementedError('Please implement in subclasses.')
class Matcher(object):
version_class = None
dist_re = re.compile(r"^(\w[\s\w'.-]*)(\((.*)\))?")
comp_re = re.compile(r'^(<=|>=|<|>|!=|={2,3}|~=)?\s*([^\s,]+)$')
num_re = re.compile(r'^\d+(\.\d+)*$')
# value is either a callable or the name of a method
_operators = {
'<': lambda v, c, p: v < c,
'>': lambda v, c, p: v > c,
'<=': lambda v, c, p: v == c or v < c,
'>=': lambda v, c, p: v == c or v > c,
'==': lambda v, c, p: v == c,
'===': lambda v, c, p: v == c,
# by default, compatible => >=.
'~=': lambda v, c, p: v == c or v > c,
'!=': lambda v, c, p: v != c,
}
def __init__(self, s):
if self.version_class is None:
raise ValueError('Please specify a version class')
self._string = s = s.strip()
m = self.dist_re.match(s)
if not m:
raise ValueError('Not valid: %r' % s)
groups = m.groups('')
self.name = groups[0].strip()
self.key = self.name.lower() # for case-insensitive comparisons
clist = []
if groups[2]:
constraints = [c.strip() for c in groups[2].split(',')]
for c in constraints:
m = self.comp_re.match(c)
if not m:
raise ValueError('Invalid %r in %r' % (c, s))
groups = m.groups()
op = groups[0] or '~='
s = groups[1]
if s.endswith('.*'):
if op not in ('==', '!='):
raise ValueError('\'.*\' not allowed for '
'%r constraints' % op)
# Could be a partial version (e.g. for '2.*') which
# won't parse as a version, so keep it as a string
vn, prefix = s[:-2], True
if not self.num_re.match(vn):
# Just to check that vn is a valid version
self.version_class(vn)
else:
# Should parse as a version, so we can create an
# instance for the comparison
vn, prefix = self.version_class(s), False
clist.append((op, vn, prefix))
self._parts = tuple(clist)
def match(self, version):
"""
Check if the provided version matches the constraints.
:param version: The version to match against this instance.
:type version: Strring or :class:`Version` instance.
"""
if isinstance(version, string_types):
version = self.version_class(version)
for operator, constraint, prefix in self._parts:
f = self._operators.get(operator)
if isinstance(f, string_types):
f = getattr(self, f)
if not f:
msg = ('%r not implemented '
'for %s' % (operator, self.__class__.__name__))
raise NotImplementedError(msg)
if not f(version, constraint, prefix):
return False
return True
@property
def exact_version(self):
result = None
if len(self._parts) == 1 and self._parts[0][0] in ('==', '==='):
result = self._parts[0][1]
return result
def _check_compatible(self, other):
if type(self) != type(other) or self.name != other.name:
raise TypeError('cannot compare %s and %s' % (self, other))
def __eq__(self, other):
self._check_compatible(other)
return self.key == other.key and self._parts == other._parts
def __ne__(self, other):
return not self.__eq__(other)
# See http://docs.python.org/reference/datamodel#object.__hash__
def __hash__(self):
return hash(self.key) + hash(self._parts)
def __repr__(self):
return "%s(%r)" % (self.__class__.__name__, self._string)
def __str__(self):
return self._string
PEP440_VERSION_RE = re.compile(r'^v?(\d+!)?(\d+(\.\d+)*)((a|b|c|rc)(\d+))?'
r'(\.(post)(\d+))?(\.(dev)(\d+))?'
r'(\+([a-zA-Z\d]+(\.[a-zA-Z\d]+)?))?$')
def _pep_440_key(s):
s = s.strip()
m = PEP440_VERSION_RE.match(s)
if not m:
raise UnsupportedVersionError('Not a valid version: %s' % s)
groups = m.groups()
nums = tuple(int(v) for v in groups[1].split('.'))
while len(nums) > 1 and nums[-1] == 0:
nums = nums[:-1]
if not groups[0]:
epoch = 0
else:
epoch = int(groups[0])
pre = groups[4:6]
post = groups[7:9]
dev = groups[10:12]
local = groups[13]
if pre == (None, None):
pre = ()
else:
pre = pre[0], int(pre[1])
if post == (None, None):
post = ()
else:
post = post[0], int(post[1])
if dev == (None, None):
dev = ()
else:
dev = dev[0], int(dev[1])
if local is None:
local = ()
else:
parts = []
for part in local.split('.'):
# to ensure that numeric compares as > lexicographic, avoid
# comparing them directly, but encode a tuple which ensures
# correct sorting
if part.isdigit():
part = (1, int(part))
else:
part = (0, part)
parts.append(part)
local = tuple(parts)
if not pre:
# either before pre-release, or final release and after
if not post and dev:
# before pre-release
pre = ('a', -1) # to sort before a0
else:
pre = ('z',) # to sort after all pre-releases
# now look at the state of post and dev.
if not post:
post = ('_',) # sort before 'a'
if not dev:
dev = ('final',)
#print('%s -> %s' % (s, m.groups()))
return epoch, nums, pre, post, dev, local
_normalized_key = _pep_440_key
class NormalizedVersion(Version):
"""A rational version.
Good:
1.2 # equivalent to "1.2.0"
1.2.0
1.2a1
1.2.3a2
1.2.3b1
1.2.3c1
1.2.3.4
TODO: fill this out
Bad:
1 # mininum two numbers
1.2a # release level must have a release serial
1.2.3b
"""
def parse(self, s):
result = _normalized_key(s)
# _normalized_key loses trailing zeroes in the release
# clause, since that's needed to ensure that X.Y == X.Y.0 == X.Y.0.0
# However, PEP 440 prefix matching needs it: for example,
# (~= 1.4.5.0) matches differently to (~= 1.4.5.0.0).
m = PEP440_VERSION_RE.match(s) # must succeed
groups = m.groups()
self._release_clause = tuple(int(v) for v in groups[1].split('.'))
return result
PREREL_TAGS = set(['a', 'b', 'c', 'rc', 'dev'])
@property
def is_prerelease(self):
return any(t[0] in self.PREREL_TAGS for t in self._parts if t)
def _match_prefix(x, y):
x = str(x)
y = str(y)
if x == y:
return True
if not x.startswith(y):
return False
n = len(y)
return x[n] == '.'
class NormalizedMatcher(Matcher):
version_class = NormalizedVersion
# value is either a callable or the name of a method
_operators = {
'~=': '_match_compatible',
'<': '_match_lt',
'>': '_match_gt',
'<=': '_match_le',
'>=': '_match_ge',
'==': '_match_eq',
'===': '_match_arbitrary',
'!=': '_match_ne',
}
def _adjust_local(self, version, constraint, prefix):
if prefix:
strip_local = '+' not in constraint and version._parts[-1]
else:
# both constraint and version are
# NormalizedVersion instances.
# If constraint does not have a local component,
# ensure the version doesn't, either.
strip_local = not constraint._parts[-1] and version._parts[-1]
if strip_local:
s = version._string.split('+', 1)[0]
version = self.version_class(s)
return version, constraint
def _match_lt(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
if version >= constraint:
return False
release_clause = constraint._release_clause
pfx = '.'.join([str(i) for i in release_clause])
return not _match_prefix(version, pfx)
def _match_gt(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
if version <= constraint:
return False
release_clause = constraint._release_clause
pfx = '.'.join([str(i) for i in release_clause])
return not _match_prefix(version, pfx)
def _match_le(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
return version <= constraint
def _match_ge(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
return version >= constraint
def _match_eq(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
if not prefix:
result = (version == constraint)
else:
result = _match_prefix(version, constraint)
return result
def _match_arbitrary(self, version, constraint, prefix):
return str(version) == str(constraint)
def _match_ne(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
if not prefix:
result = (version != constraint)
else:
result = not _match_prefix(version, constraint)
return result
def _match_compatible(self, version, constraint, prefix):
version, constraint = self._adjust_local(version, constraint, prefix)
if version == constraint:
return True
if version < constraint:
return False
# if not prefix:
# return True
release_clause = constraint._release_clause
if len(release_clause) > 1:
release_clause = release_clause[:-1]
pfx = '.'.join([str(i) for i in release_clause])
return _match_prefix(version, pfx)
_REPLACEMENTS = (
(re.compile('[.+-]$'), ''), # remove trailing puncts
(re.compile(r'^[.](\d)'), r'0.\1'), # .N -> 0.N at start
(re.compile('^[.-]'), ''), # remove leading puncts
(re.compile(r'^\((.*)\)$'), r'\1'), # remove parentheses
(re.compile(r'^v(ersion)?\s*(\d+)'), r'\2'), # remove leading v(ersion)
(re.compile(r'^r(ev)?\s*(\d+)'), r'\2'), # remove leading v(ersion)
(re.compile('[.]{2,}'), '.'), # multiple runs of '.'
(re.compile(r'\b(alfa|apha)\b'), 'alpha'), # misspelt alpha
(re.compile(r'\b(pre-alpha|prealpha)\b'),
'pre.alpha'), # standardise
(re.compile(r'\(beta\)$'), 'beta'), # remove parentheses
)
_SUFFIX_REPLACEMENTS = (
(re.compile('^[:~._+-]+'), ''), # remove leading puncts
(re.compile('[,*")([\]]'), ''), # remove unwanted chars
(re.compile('[~:+_ -]'), '.'), # replace illegal chars
(re.compile('[.]{2,}'), '.'), # multiple runs of '.'
(re.compile(r'\.$'), ''), # trailing '.'
)
_NUMERIC_PREFIX = re.compile(r'(\d+(\.\d+)*)')
def _suggest_semantic_version(s):
"""
Try to suggest a semantic form for a version for which
_suggest_normalized_version couldn't come up with anything.
"""
result = s.strip().lower()
for pat, repl in _REPLACEMENTS:
result = pat.sub(repl, result)
if not result:
result = '0.0.0'
# Now look for numeric prefix, and separate it out from
# the rest.
#import pdb; pdb.set_trace()
m = _NUMERIC_PREFIX.match(result)
if not m:
prefix = '0.0.0'
suffix = result
else:
prefix = m.groups()[0].split('.')
prefix = [int(i) for i in prefix]
while len(prefix) < 3:
prefix.append(0)
if len(prefix) == 3:
suffix = result[m.end():]
else:
suffix = '.'.join([str(i) for i in prefix[3:]]) + result[m.end():]
prefix = prefix[:3]
prefix = '.'.join([str(i) for i in prefix])
suffix = suffix.strip()
if suffix:
#import pdb; pdb.set_trace()
# massage the suffix.
for pat, repl in _SUFFIX_REPLACEMENTS:
suffix = pat.sub(repl, suffix)
if not suffix:
result = prefix
else:
sep = '-' if 'dev' in suffix else '+'
result = prefix + sep + suffix
if not is_semver(result):
result = None
return result
def _suggest_normalized_version(s):
"""Suggest a normalized version close to the given version string.
If you have a version string that isn't rational (i.e. NormalizedVersion
doesn't like it) then you might be able to get an equivalent (or close)
rational version from this function.
This does a number of simple normalizations to the given string, based
on observation of versions currently in use on PyPI. Given a dump of
those version during PyCon 2009, 4287 of them:
- 2312 (53.93%) match NormalizedVersion without change
with the automatic suggestion
- 3474 (81.04%) match when using this suggestion method
@param s {str} An irrational version string.
@returns A rational version string, or None, if couldn't determine one.
"""
try:
_normalized_key(s)
return s # already rational
except UnsupportedVersionError:
pass
rs = s.lower()
# part of this could use maketrans
for orig, repl in (('-alpha', 'a'), ('-beta', 'b'), ('alpha', 'a'),
('beta', 'b'), ('rc', 'c'), ('-final', ''),
('-pre', 'c'),
('-release', ''), ('.release', ''), ('-stable', ''),
('+', '.'), ('_', '.'), (' ', ''), ('.final', ''),
('final', '')):
rs = rs.replace(orig, repl)
# if something ends with dev or pre, we add a 0
rs = re.sub(r"pre$", r"pre0", rs)
rs = re.sub(r"dev$", r"dev0", rs)
# if we have something like "b-2" or "a.2" at the end of the
# version, that is pobably beta, alpha, etc
# let's remove the dash or dot
rs = re.sub(r"([abc]|rc)[\-\.](\d+)$", r"\1\2", rs)
# 1.0-dev-r371 -> 1.0.dev371
# 0.1-dev-r79 -> 0.1.dev79
rs = re.sub(r"[\-\.](dev)[\-\.]?r?(\d+)$", r".\1\2", rs)
# Clean: 2.0.a.3, 2.0.b1, 0.9.0~c1
rs = re.sub(r"[.~]?([abc])\.?", r"\1", rs)
# Clean: v0.3, v1.0
if rs.startswith('v'):
rs = rs[1:]
# Clean leading '0's on numbers.
#TODO: unintended side-effect on, e.g., "2003.05.09"
# PyPI stats: 77 (~2%) better
rs = re.sub(r"\b0+(\d+)(?!\d)", r"\1", rs)
# Clean a/b/c with no version. E.g. "1.0a" -> "1.0a0". Setuptools infers
# zero.
# PyPI stats: 245 (7.56%) better
rs = re.sub(r"(\d+[abc])$", r"\g<1>0", rs)
# the 'dev-rNNN' tag is a dev tag
rs = re.sub(r"\.?(dev-r|dev\.r)\.?(\d+)$", r".dev\2", rs)
# clean the - when used as a pre delimiter
rs = re.sub(r"-(a|b|c)(\d+)$", r"\1\2", rs)
# a terminal "dev" or "devel" can be changed into ".dev0"
rs = re.sub(r"[\.\-](dev|devel)$", r".dev0", rs)
# a terminal "dev" can be changed into ".dev0"
rs = re.sub(r"(?![\.\-])dev$", r".dev0", rs)
# a terminal "final" or "stable" can be removed
rs = re.sub(r"(final|stable)$", "", rs)
# The 'r' and the '-' tags are post release tags
# 0.4a1.r10 -> 0.4a1.post10
# 0.9.33-17222 -> 0.9.33.post17222
# 0.9.33-r17222 -> 0.9.33.post17222
rs = re.sub(r"\.?(r|-|-r)\.?(\d+)$", r".post\2", rs)
# Clean 'r' instead of 'dev' usage:
# 0.9.33+r17222 -> 0.9.33.dev17222
# 1.0dev123 -> 1.0.dev123
# 1.0.git123 -> 1.0.dev123
# 1.0.bzr123 -> 1.0.dev123
# 0.1a0dev.123 -> 0.1a0.dev123
# PyPI stats: ~150 (~4%) better
rs = re.sub(r"\.?(dev|git|bzr)\.?(\d+)$", r".dev\2", rs)
# Clean '.pre' (normalized from '-pre' above) instead of 'c' usage:
# 0.2.pre1 -> 0.2c1
# 0.2-c1 -> 0.2c1
# 1.0preview123 -> 1.0c123
# PyPI stats: ~21 (0.62%) better
rs = re.sub(r"\.?(pre|preview|-c)(\d+)$", r"c\g<2>", rs)
# Tcl/Tk uses "px" for their post release markers
rs = re.sub(r"p(\d+)$", r".post\1", rs)
try:
_normalized_key(rs)
except UnsupportedVersionError:
rs = None
return rs
#
# Legacy version processing (distribute-compatible)
#
_VERSION_PART = re.compile(r'([a-z]+|\d+|[\.-])', re.I)
_VERSION_REPLACE = {
'pre': 'c',
'preview': 'c',
'-': 'final-',
'rc': 'c',
'dev': '@',
'': None,
'.': None,
}
def _legacy_key(s):
def get_parts(s):
result = []
for p in _VERSION_PART.split(s.lower()):
p = _VERSION_REPLACE.get(p, p)
if p:
if '0' <= p[:1] <= '9':
p = p.zfill(8)
else:
p = '*' + p
result.append(p)
result.append('*final')
return result
result = []
for p in get_parts(s):
if p.startswith('*'):
if p < '*final':
while result and result[-1] == '*final-':
result.pop()
while result and result[-1] == '00000000':
result.pop()
result.append(p)
return tuple(result)
class LegacyVersion(Version):
def parse(self, s):
return _legacy_key(s)
@property
def is_prerelease(self):
result = False
for x in self._parts:
if (isinstance(x, string_types) and x.startswith('*') and
x < '*final'):
result = True
break
return result
class LegacyMatcher(Matcher):
version_class = LegacyVersion
_operators = dict(Matcher._operators)
_operators['~='] = '_match_compatible'
numeric_re = re.compile('^(\d+(\.\d+)*)')
def _match_compatible(self, version, constraint, prefix):
if version < constraint:
return False
m = self.numeric_re.match(str(constraint))
if not m:
logger.warning('Cannot compute compatible match for version %s '
' and constraint %s', version, constraint)
return True
s = m.groups()[0]
if '.' in s:
s = s.rsplit('.', 1)[0]
return _match_prefix(version, s)
#
# Semantic versioning
#
_SEMVER_RE = re.compile(r'^(\d+)\.(\d+)\.(\d+)'
r'(-[a-z0-9]+(\.[a-z0-9-]+)*)?'
r'(\+[a-z0-9]+(\.[a-z0-9-]+)*)?$', re.I)
def is_semver(s):
return _SEMVER_RE.match(s)
def _semantic_key(s):
def make_tuple(s, absent):
if s is None:
result = (absent,)
else:
parts = s[1:].split('.')
# We can't compare ints and strings on Python 3, so fudge it
# by zero-filling numeric values so simulate a numeric comparison
result = tuple([p.zfill(8) if p.isdigit() else p for p in parts])
return result
m = is_semver(s)
if not m:
raise UnsupportedVersionError(s)
groups = m.groups()
major, minor, patch = [int(i) for i in groups[:3]]
# choose the '|' and '*' so that versions sort correctly
pre, build = make_tuple(groups[3], '|'), make_tuple(groups[5], '*')
return (major, minor, patch), pre, build
class SemanticVersion(Version):
def parse(self, s):
return _semantic_key(s)
@property
def is_prerelease(self):
return self._parts[1][0] != '|'
class SemanticMatcher(Matcher):
version_class = SemanticVersion
class VersionScheme(object):
def __init__(self, key, matcher, suggester=None):
self.key = key
self.matcher = matcher
self.suggester = suggester
def is_valid_version(self, s):
try:
self.matcher.version_class(s)
result = True
except UnsupportedVersionError:
result = False
return result
def is_valid_matcher(self, s):
try:
self.matcher(s)
result = True
except UnsupportedVersionError:
result = False
return result
def is_valid_constraint_list(self, s):
"""
Used for processing some metadata fields
"""
return self.is_valid_matcher('dummy_name (%s)' % s)
def suggest(self, s):
if self.suggester is None:
result = None
else:
result = self.suggester(s)
return result
_SCHEMES = {
'normalized': VersionScheme(_normalized_key, NormalizedMatcher,
_suggest_normalized_version),
'legacy': VersionScheme(_legacy_key, LegacyMatcher, lambda self, s: s),
'semantic': VersionScheme(_semantic_key, SemanticMatcher,
_suggest_semantic_version),
}
_SCHEMES['default'] = _SCHEMES['normalized']
def get_scheme(name):
if name not in _SCHEMES:
raise ValueError('unknown scheme name: %r' % name)
return _SCHEMES[name]

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# -*- coding: utf-8 -*-
#
# Copyright (C) 2013-2014 Vinay Sajip.
# Licensed to the Python Software Foundation under a contributor agreement.
# See LICENSE.txt and CONTRIBUTORS.txt.
#
from __future__ import unicode_literals
import base64
import codecs
import datetime
import distutils.util
from email import message_from_file
import hashlib
import imp
import json
import logging
import os
import posixpath
import re
import shutil
import sys
import tempfile
import zipfile
from . import __version__, DistlibException
from .compat import sysconfig, ZipFile, fsdecode, text_type, filter
from .database import InstalledDistribution
from .metadata import Metadata, METADATA_FILENAME
from .util import (FileOperator, convert_path, CSVReader, CSVWriter, Cache,
cached_property, get_cache_base, read_exports, tempdir)
from .version import NormalizedVersion, UnsupportedVersionError
logger = logging.getLogger(__name__)
cache = None # created when needed
if hasattr(sys, 'pypy_version_info'):
IMP_PREFIX = 'pp'
elif sys.platform.startswith('java'):
IMP_PREFIX = 'jy'
elif sys.platform == 'cli':
IMP_PREFIX = 'ip'
else:
IMP_PREFIX = 'cp'
VER_SUFFIX = sysconfig.get_config_var('py_version_nodot')
if not VER_SUFFIX: # pragma: no cover
VER_SUFFIX = '%s%s' % sys.version_info[:2]
PYVER = 'py' + VER_SUFFIX
IMPVER = IMP_PREFIX + VER_SUFFIX
ARCH = distutils.util.get_platform().replace('-', '_').replace('.', '_')
ABI = sysconfig.get_config_var('SOABI')
if ABI and ABI.startswith('cpython-'):
ABI = ABI.replace('cpython-', 'cp')
else:
def _derive_abi():
parts = ['cp', VER_SUFFIX]
if sysconfig.get_config_var('Py_DEBUG'):
parts.append('d')
if sysconfig.get_config_var('WITH_PYMALLOC'):
parts.append('m')
if sysconfig.get_config_var('Py_UNICODE_SIZE') == 4:
parts.append('u')
return ''.join(parts)
ABI = _derive_abi()
del _derive_abi
FILENAME_RE = re.compile(r'''
(?P<nm>[^-]+)
-(?P<vn>\d+[^-]*)
(-(?P<bn>\d+[^-]*))?
-(?P<py>\w+\d+(\.\w+\d+)*)
-(?P<bi>\w+)
-(?P<ar>\w+)
\.whl$
''', re.IGNORECASE | re.VERBOSE)
NAME_VERSION_RE = re.compile(r'''
(?P<nm>[^-]+)
-(?P<vn>\d+[^-]*)
(-(?P<bn>\d+[^-]*))?$
''', re.IGNORECASE | re.VERBOSE)
SHEBANG_RE = re.compile(br'\s*#![^\r\n]*')
SHEBANG_DETAIL_RE = re.compile(br'^(\s*#!("[^"]+"|\S+))\s+(.*)$')
SHEBANG_PYTHON = b'#!python'
SHEBANG_PYTHONW = b'#!pythonw'
if os.sep == '/':
to_posix = lambda o: o
else:
to_posix = lambda o: o.replace(os.sep, '/')
class Mounter(object):
def __init__(self):
self.impure_wheels = {}
self.libs = {}
def add(self, pathname, extensions):
self.impure_wheels[pathname] = extensions
self.libs.update(extensions)
def remove(self, pathname):
extensions = self.impure_wheels.pop(pathname)
for k, v in extensions:
if k in self.libs:
del self.libs[k]
def find_module(self, fullname, path=None):
if fullname in self.libs:
result = self
else:
result = None
return result
def load_module(self, fullname):
if fullname in sys.modules:
result = sys.modules[fullname]
else:
if fullname not in self.libs:
raise ImportError('unable to find extension for %s' % fullname)
result = imp.load_dynamic(fullname, self.libs[fullname])
result.__loader__ = self
parts = fullname.rsplit('.', 1)
if len(parts) > 1:
result.__package__ = parts[0]
return result
_hook = Mounter()
class Wheel(object):
"""
Class to build and install from Wheel files (PEP 427).
"""
wheel_version = (1, 1)
hash_kind = 'sha256'
def __init__(self, filename=None, sign=False, verify=False):
"""
Initialise an instance using a (valid) filename.
"""
self.sign = sign
self.should_verify = verify
self.buildver = ''
self.pyver = [PYVER]
self.abi = ['none']
self.arch = ['any']
self.dirname = os.getcwd()
if filename is None:
self.name = 'dummy'
self.version = '0.1'
self._filename = self.filename
else:
m = NAME_VERSION_RE.match(filename)
if m:
info = m.groupdict('')
self.name = info['nm']
# Reinstate the local version separator
self.version = info['vn'].replace('_', '-')
self.buildver = info['bn']
self._filename = self.filename
else:
dirname, filename = os.path.split(filename)
m = FILENAME_RE.match(filename)
if not m:
raise DistlibException('Invalid name or '
'filename: %r' % filename)
if dirname:
self.dirname = os.path.abspath(dirname)
self._filename = filename
info = m.groupdict('')
self.name = info['nm']
self.version = info['vn']
self.buildver = info['bn']
self.pyver = info['py'].split('.')
self.abi = info['bi'].split('.')
self.arch = info['ar'].split('.')
@property
def filename(self):
"""
Build and return a filename from the various components.
"""
if self.buildver:
buildver = '-' + self.buildver
else:
buildver = ''
pyver = '.'.join(self.pyver)
abi = '.'.join(self.abi)
arch = '.'.join(self.arch)
# replace - with _ as a local version separator
version = self.version.replace('-', '_')
return '%s-%s%s-%s-%s-%s.whl' % (self.name, version, buildver,
pyver, abi, arch)
@property
def exists(self):
path = os.path.join(self.dirname, self.filename)
return os.path.isfile(path)
@property
def tags(self):
for pyver in self.pyver:
for abi in self.abi:
for arch in self.arch:
yield pyver, abi, arch
@cached_property
def metadata(self):
pathname = os.path.join(self.dirname, self.filename)
name_ver = '%s-%s' % (self.name, self.version)
info_dir = '%s.dist-info' % name_ver
wrapper = codecs.getreader('utf-8')
with ZipFile(pathname, 'r') as zf:
wheel_metadata = self.get_wheel_metadata(zf)
wv = wheel_metadata['Wheel-Version'].split('.', 1)
file_version = tuple([int(i) for i in wv])
if file_version < (1, 1):
fn = 'METADATA'
else:
fn = METADATA_FILENAME
try:
metadata_filename = posixpath.join(info_dir, fn)
with zf.open(metadata_filename) as bf:
wf = wrapper(bf)
result = Metadata(fileobj=wf)
except KeyError:
raise ValueError('Invalid wheel, because %s is '
'missing' % fn)
return result
def get_wheel_metadata(self, zf):
name_ver = '%s-%s' % (self.name, self.version)
info_dir = '%s.dist-info' % name_ver
metadata_filename = posixpath.join(info_dir, 'WHEEL')
with zf.open(metadata_filename) as bf:
wf = codecs.getreader('utf-8')(bf)
message = message_from_file(wf)
return dict(message)
@cached_property
def info(self):
pathname = os.path.join(self.dirname, self.filename)
with ZipFile(pathname, 'r') as zf:
result = self.get_wheel_metadata(zf)
return result
def process_shebang(self, data):
m = SHEBANG_RE.match(data)
if m:
end = m.end()
shebang, data_after_shebang = data[:end], data[end:]
# Preserve any arguments after the interpreter
if b'pythonw' in shebang.lower():
shebang_python = SHEBANG_PYTHONW
else:
shebang_python = SHEBANG_PYTHON
m = SHEBANG_DETAIL_RE.match(shebang)
if m:
args = b' ' + m.groups()[-1]
else:
args = b''
shebang = shebang_python + args
data = shebang + data_after_shebang
else:
cr = data.find(b'\r')
lf = data.find(b'\n')
if cr < 0 or cr > lf:
term = b'\n'
else:
if data[cr:cr + 2] == b'\r\n':
term = b'\r\n'
else:
term = b'\r'
data = SHEBANG_PYTHON + term + data
return data
def get_hash(self, data, hash_kind=None):
if hash_kind is None:
hash_kind = self.hash_kind
try:
hasher = getattr(hashlib, hash_kind)
except AttributeError:
raise DistlibException('Unsupported hash algorithm: %r' % hash_kind)
result = hasher(data).digest()
result = base64.urlsafe_b64encode(result).rstrip(b'=').decode('ascii')
return hash_kind, result
def write_record(self, records, record_path, base):
with CSVWriter(record_path) as writer:
for row in records:
writer.writerow(row)
p = to_posix(os.path.relpath(record_path, base))
writer.writerow((p, '', ''))
def write_records(self, info, libdir, archive_paths):
records = []
distinfo, info_dir = info
hasher = getattr(hashlib, self.hash_kind)
for ap, p in archive_paths:
with open(p, 'rb') as f:
data = f.read()
digest = '%s=%s' % self.get_hash(data)
size = os.path.getsize(p)
records.append((ap, digest, size))
p = os.path.join(distinfo, 'RECORD')
self.write_record(records, p, libdir)
ap = to_posix(os.path.join(info_dir, 'RECORD'))
archive_paths.append((ap, p))
def build_zip(self, pathname, archive_paths):
with ZipFile(pathname, 'w', zipfile.ZIP_DEFLATED) as zf:
for ap, p in archive_paths:
logger.debug('Wrote %s to %s in wheel', p, ap)
zf.write(p, ap)
def build(self, paths, tags=None, wheel_version=None):
"""
Build a wheel from files in specified paths, and use any specified tags
when determining the name of the wheel.
"""
if tags is None:
tags = {}
libkey = list(filter(lambda o: o in paths, ('purelib', 'platlib')))[0]
if libkey == 'platlib':
is_pure = 'false'
default_pyver = [IMPVER]
default_abi = [ABI]
default_arch = [ARCH]
else:
is_pure = 'true'
default_pyver = [PYVER]
default_abi = ['none']
default_arch = ['any']
self.pyver = tags.get('pyver', default_pyver)
self.abi = tags.get('abi', default_abi)
self.arch = tags.get('arch', default_arch)
libdir = paths[libkey]
name_ver = '%s-%s' % (self.name, self.version)
data_dir = '%s.data' % name_ver
info_dir = '%s.dist-info' % name_ver
archive_paths = []
# First, stuff which is not in site-packages
for key in ('data', 'headers', 'scripts'):
if key not in paths:
continue
path = paths[key]
if os.path.isdir(path):
for root, dirs, files in os.walk(path):
for fn in files:
p = fsdecode(os.path.join(root, fn))
rp = os.path.relpath(p, path)
ap = to_posix(os.path.join(data_dir, key, rp))
archive_paths.append((ap, p))
if key == 'scripts' and not p.endswith('.exe'):
with open(p, 'rb') as f:
data = f.read()
data = self.process_shebang(data)
with open(p, 'wb') as f:
f.write(data)
# Now, stuff which is in site-packages, other than the
# distinfo stuff.
path = libdir
distinfo = None
for root, dirs, files in os.walk(path):
if root == path:
# At the top level only, save distinfo for later
# and skip it for now
for i, dn in enumerate(dirs):
dn = fsdecode(dn)
if dn.endswith('.dist-info'):
distinfo = os.path.join(root, dn)
del dirs[i]
break
assert distinfo, '.dist-info directory expected, not found'
for fn in files:
# comment out next suite to leave .pyc files in
if fsdecode(fn).endswith(('.pyc', '.pyo')):
continue
p = os.path.join(root, fn)
rp = to_posix(os.path.relpath(p, path))
archive_paths.append((rp, p))
# Now distinfo. Assumed to be flat, i.e. os.listdir is enough.
files = os.listdir(distinfo)
for fn in files:
if fn not in ('RECORD', 'INSTALLER', 'SHARED', 'WHEEL'):
p = fsdecode(os.path.join(distinfo, fn))
ap = to_posix(os.path.join(info_dir, fn))
archive_paths.append((ap, p))
wheel_metadata = [
'Wheel-Version: %d.%d' % (wheel_version or self.wheel_version),
'Generator: distlib %s' % __version__,
'Root-Is-Purelib: %s' % is_pure,
]
for pyver, abi, arch in self.tags:
wheel_metadata.append('Tag: %s-%s-%s' % (pyver, abi, arch))
p = os.path.join(distinfo, 'WHEEL')
with open(p, 'w') as f:
f.write('\n'.join(wheel_metadata))
ap = to_posix(os.path.join(info_dir, 'WHEEL'))
archive_paths.append((ap, p))
# Now, at last, RECORD.
# Paths in here are archive paths - nothing else makes sense.
self.write_records((distinfo, info_dir), libdir, archive_paths)
# Now, ready to build the zip file
pathname = os.path.join(self.dirname, self.filename)
self.build_zip(pathname, archive_paths)
return pathname
def install(self, paths, maker, **kwargs):
"""
Install a wheel to the specified paths. If kwarg ``warner`` is
specified, it should be a callable, which will be called with two
tuples indicating the wheel version of this software and the wheel
version in the file, if there is a discrepancy in the versions.
This can be used to issue any warnings to raise any exceptions.
If kwarg ``lib_only`` is True, only the purelib/platlib files are
installed, and the headers, scripts, data and dist-info metadata are
not written.
The return value is a :class:`InstalledDistribution` instance unless
``options.lib_only`` is True, in which case the return value is ``None``.
"""
dry_run = maker.dry_run
warner = kwargs.get('warner')
lib_only = kwargs.get('lib_only', False)
pathname = os.path.join(self.dirname, self.filename)
name_ver = '%s-%s' % (self.name, self.version)
data_dir = '%s.data' % name_ver
info_dir = '%s.dist-info' % name_ver
metadata_name = posixpath.join(info_dir, METADATA_FILENAME)
wheel_metadata_name = posixpath.join(info_dir, 'WHEEL')
record_name = posixpath.join(info_dir, 'RECORD')
wrapper = codecs.getreader('utf-8')
with ZipFile(pathname, 'r') as zf:
with zf.open(wheel_metadata_name) as bwf:
wf = wrapper(bwf)
message = message_from_file(wf)
wv = message['Wheel-Version'].split('.', 1)
file_version = tuple([int(i) for i in wv])
if (file_version != self.wheel_version) and warner:
warner(self.wheel_version, file_version)
if message['Root-Is-Purelib'] == 'true':
libdir = paths['purelib']
else:
libdir = paths['platlib']
records = {}
with zf.open(record_name) as bf:
with CSVReader(stream=bf) as reader:
for row in reader:
p = row[0]
records[p] = row
data_pfx = posixpath.join(data_dir, '')
info_pfx = posixpath.join(info_dir, '')
script_pfx = posixpath.join(data_dir, 'scripts', '')
# make a new instance rather than a copy of maker's,
# as we mutate it
fileop = FileOperator(dry_run=dry_run)
fileop.record = True # so we can rollback if needed
bc = not sys.dont_write_bytecode # Double negatives. Lovely!
outfiles = [] # for RECORD writing
# for script copying/shebang processing
workdir = tempfile.mkdtemp()
# set target dir later
# we default add_launchers to False, as the
# Python Launcher should be used instead
maker.source_dir = workdir
maker.target_dir = None
try:
for zinfo in zf.infolist():
arcname = zinfo.filename
if isinstance(arcname, text_type):
u_arcname = arcname
else:
u_arcname = arcname.decode('utf-8')
# The signature file won't be in RECORD,
# and we don't currently don't do anything with it
if u_arcname.endswith('/RECORD.jws'):
continue
row = records[u_arcname]
if row[2] and str(zinfo.file_size) != row[2]:
raise DistlibException('size mismatch for '
'%s' % u_arcname)
if row[1]:
kind, value = row[1].split('=', 1)
with zf.open(arcname) as bf:
data = bf.read()
_, digest = self.get_hash(data, kind)
if digest != value:
raise DistlibException('digest mismatch for '
'%s' % arcname)
if lib_only and u_arcname.startswith((info_pfx, data_pfx)):
logger.debug('lib_only: skipping %s', u_arcname)
continue
is_script = (u_arcname.startswith(script_pfx)
and not u_arcname.endswith('.exe'))
if u_arcname.startswith(data_pfx):
_, where, rp = u_arcname.split('/', 2)
outfile = os.path.join(paths[where], convert_path(rp))
else:
# meant for site-packages.
if u_arcname in (wheel_metadata_name, record_name):
continue
outfile = os.path.join(libdir, convert_path(u_arcname))
if not is_script:
with zf.open(arcname) as bf:
fileop.copy_stream(bf, outfile)
outfiles.append(outfile)
# Double check the digest of the written file
if not dry_run and row[1]:
with open(outfile, 'rb') as bf:
data = bf.read()
_, newdigest = self.get_hash(data, kind)
if newdigest != digest:
raise DistlibException('digest mismatch '
'on write for '
'%s' % outfile)
if bc and outfile.endswith('.py'):
try:
pyc = fileop.byte_compile(outfile)
outfiles.append(pyc)
except Exception:
# Don't give up if byte-compilation fails,
# but log it and perhaps warn the user
logger.warning('Byte-compilation failed',
exc_info=True)
else:
fn = os.path.basename(convert_path(arcname))
workname = os.path.join(workdir, fn)
with zf.open(arcname) as bf:
fileop.copy_stream(bf, workname)
dn, fn = os.path.split(outfile)
maker.target_dir = dn
filenames = maker.make(fn)
fileop.set_executable_mode(filenames)
outfiles.extend(filenames)
if lib_only:
logger.debug('lib_only: returning None')
dist = None
else:
# Generate scripts
# Try to get pydist.json so we can see if there are
# any commands to generate. If this fails (e.g. because
# of a legacy wheel), log a warning but don't give up.
commands = None
file_version = self.info['Wheel-Version']
if file_version == '1.0':
# Use legacy info
ep = posixpath.join(info_dir, 'entry_points.txt')
try:
with zf.open(ep) as bwf:
epdata = read_exports(bwf)
commands = {}
for key in ('console', 'gui'):
k = '%s_scripts' % key
if k in epdata:
commands['wrap_%s' % key] = d = {}
for v in epdata[k].values():
s = '%s:%s' % (v.prefix, v.suffix)
if v.flags:
s += ' %s' % v.flags
d[v.name] = s
except Exception:
logger.warning('Unable to read legacy script '
'metadata, so cannot generate '
'scripts')
else:
try:
with zf.open(metadata_name) as bwf:
wf = wrapper(bwf)
commands = json.load(wf).get('extensions')
if commands:
commands = commands.get('python.commands')
except Exception:
logger.warning('Unable to read JSON metadata, so '
'cannot generate scripts')
if commands:
console_scripts = commands.get('wrap_console', {})
gui_scripts = commands.get('wrap_gui', {})
if console_scripts or gui_scripts:
script_dir = paths.get('scripts', '')
if not os.path.isdir(script_dir):
raise ValueError('Valid script path not '
'specified')
maker.target_dir = script_dir
for k, v in console_scripts.items():
script = '%s = %s' % (k, v)
filenames = maker.make(script)
fileop.set_executable_mode(filenames)
if gui_scripts:
options = {'gui': True }
for k, v in gui_scripts.items():
script = '%s = %s' % (k, v)
filenames = maker.make(script, options)
fileop.set_executable_mode(filenames)
p = os.path.join(libdir, info_dir)
dist = InstalledDistribution(p)
# Write SHARED
paths = dict(paths) # don't change passed in dict
del paths['purelib']
del paths['platlib']
paths['lib'] = libdir
p = dist.write_shared_locations(paths, dry_run)
if p:
outfiles.append(p)
# Write RECORD
dist.write_installed_files(outfiles, paths['prefix'],
dry_run)
return dist
except Exception: # pragma: no cover
logger.exception('installation failed.')
fileop.rollback()
raise
finally:
shutil.rmtree(workdir)
def _get_dylib_cache(self):
global cache
if cache is None:
# Use native string to avoid issues on 2.x: see Python #20140.
base = os.path.join(get_cache_base(), str('dylib-cache'),
sys.version[:3])
cache = Cache(base)
return cache
def _get_extensions(self):
pathname = os.path.join(self.dirname, self.filename)
name_ver = '%s-%s' % (self.name, self.version)
info_dir = '%s.dist-info' % name_ver
arcname = posixpath.join(info_dir, 'EXTENSIONS')
wrapper = codecs.getreader('utf-8')
result = []
with ZipFile(pathname, 'r') as zf:
try:
with zf.open(arcname) as bf:
wf = wrapper(bf)
extensions = json.load(wf)
cache = self._get_dylib_cache()
prefix = cache.prefix_to_dir(pathname)
cache_base = os.path.join(cache.base, prefix)
if not os.path.isdir(cache_base):
os.makedirs(cache_base)
for name, relpath in extensions.items():
dest = os.path.join(cache_base, convert_path(relpath))
if not os.path.exists(dest):
extract = True
else:
file_time = os.stat(dest).st_mtime
file_time = datetime.datetime.fromtimestamp(file_time)
info = zf.getinfo(relpath)
wheel_time = datetime.datetime(*info.date_time)
extract = wheel_time > file_time
if extract:
zf.extract(relpath, cache_base)
result.append((name, dest))
except KeyError:
pass
return result
def is_compatible(self):
"""
Determine if a wheel is compatible with the running system.
"""
return is_compatible(self)
def is_mountable(self):
"""
Determine if a wheel is asserted as mountable by its metadata.
"""
return True # for now - metadata details TBD
def mount(self, append=False):
pathname = os.path.abspath(os.path.join(self.dirname, self.filename))
if not self.is_compatible():
msg = 'Wheel %s not compatible with this Python.' % pathname
raise DistlibException(msg)
if not self.is_mountable():
msg = 'Wheel %s is marked as not mountable.' % pathname
raise DistlibException(msg)
if pathname in sys.path:
logger.debug('%s already in path', pathname)
else:
if append:
sys.path.append(pathname)
else:
sys.path.insert(0, pathname)
extensions = self._get_extensions()
if extensions:
if _hook not in sys.meta_path:
sys.meta_path.append(_hook)
_hook.add(pathname, extensions)
def unmount(self):
pathname = os.path.abspath(os.path.join(self.dirname, self.filename))
if pathname not in sys.path:
logger.debug('%s not in path', pathname)
else:
sys.path.remove(pathname)
if pathname in _hook.impure_wheels:
_hook.remove(pathname)
if not _hook.impure_wheels:
if _hook in sys.meta_path:
sys.meta_path.remove(_hook)
def verify(self):
pathname = os.path.join(self.dirname, self.filename)
name_ver = '%s-%s' % (self.name, self.version)
data_dir = '%s.data' % name_ver
info_dir = '%s.dist-info' % name_ver
metadata_name = posixpath.join(info_dir, METADATA_FILENAME)
wheel_metadata_name = posixpath.join(info_dir, 'WHEEL')
record_name = posixpath.join(info_dir, 'RECORD')
wrapper = codecs.getreader('utf-8')
with ZipFile(pathname, 'r') as zf:
with zf.open(wheel_metadata_name) as bwf:
wf = wrapper(bwf)
message = message_from_file(wf)
wv = message['Wheel-Version'].split('.', 1)
file_version = tuple([int(i) for i in wv])
# TODO version verification
records = {}
with zf.open(record_name) as bf:
with CSVReader(stream=bf) as reader:
for row in reader:
p = row[0]
records[p] = row
for zinfo in zf.infolist():
arcname = zinfo.filename
if isinstance(arcname, text_type):
u_arcname = arcname
else:
u_arcname = arcname.decode('utf-8')
if '..' in u_arcname:
raise DistlibException('invalid entry in '
'wheel: %r' % u_arcname)
# The signature file won't be in RECORD,
# and we don't currently don't do anything with it
if u_arcname.endswith('/RECORD.jws'):
continue
row = records[u_arcname]
if row[2] and str(zinfo.file_size) != row[2]:
raise DistlibException('size mismatch for '
'%s' % u_arcname)
if row[1]:
kind, value = row[1].split('=', 1)
with zf.open(arcname) as bf:
data = bf.read()
_, digest = self.get_hash(data, kind)
if digest != value:
raise DistlibException('digest mismatch for '
'%s' % arcname)
def update(self, modifier, dest_dir=None, **kwargs):
"""
Update the contents of a wheel in a generic way. The modifier should
be a callable which expects a dictionary argument: its keys are
archive-entry paths, and its values are absolute filesystem paths
where the contents the corresponding archive entries can be found. The
modifier is free to change the contents of the files pointed to, add
new entries and remove entries, before returning. This method will
extract the entire contents of the wheel to a temporary location, call
the modifier, and then use the passed (and possibly updated)
dictionary to write a new wheel. If ``dest_dir`` is specified, the new
wheel is written there -- otherwise, the original wheel is overwritten.
The modifier should return True if it updated the wheel, else False.
This method returns the same value the modifier returns.
"""
def get_version(path_map, info_dir):
version = path = None
key = '%s/%s' % (info_dir, METADATA_FILENAME)
if key not in path_map:
key = '%s/PKG-INFO' % info_dir
if key in path_map:
path = path_map[key]
version = Metadata(path=path).version
return version, path
def update_version(version, path):
updated = None
try:
v = NormalizedVersion(version)
i = version.find('-')
if i < 0:
updated = '%s+1' % version
else:
parts = [int(s) for s in version[i + 1:].split('.')]
parts[-1] += 1
updated = '%s+%s' % (version[:i],
'.'.join(str(i) for i in parts))
except UnsupportedVersionError:
logger.debug('Cannot update non-compliant (PEP-440) '
'version %r', version)
if updated:
md = Metadata(path=path)
md.version = updated
legacy = not path.endswith(METADATA_FILENAME)
md.write(path=path, legacy=legacy)
logger.debug('Version updated from %r to %r', version,
updated)
pathname = os.path.join(self.dirname, self.filename)
name_ver = '%s-%s' % (self.name, self.version)
info_dir = '%s.dist-info' % name_ver
record_name = posixpath.join(info_dir, 'RECORD')
with tempdir() as workdir:
with ZipFile(pathname, 'r') as zf:
path_map = {}
for zinfo in zf.infolist():
arcname = zinfo.filename
if isinstance(arcname, text_type):
u_arcname = arcname
else:
u_arcname = arcname.decode('utf-8')
if u_arcname == record_name:
continue
if '..' in u_arcname:
raise DistlibException('invalid entry in '
'wheel: %r' % u_arcname)
zf.extract(zinfo, workdir)
path = os.path.join(workdir, convert_path(u_arcname))
path_map[u_arcname] = path
# Remember the version.
original_version, _ = get_version(path_map, info_dir)
# Files extracted. Call the modifier.
modified = modifier(path_map, **kwargs)
if modified:
# Something changed - need to build a new wheel.
current_version, path = get_version(path_map, info_dir)
if current_version and (current_version == original_version):
# Add or update local version to signify changes.
update_version(current_version, path)
# Decide where the new wheel goes.
if dest_dir is None:
fd, newpath = tempfile.mkstemp(suffix='.whl',
prefix='wheel-update-',
dir=workdir)
os.close(fd)
else:
if not os.path.isdir(dest_dir):
raise DistlibException('Not a directory: %r' % dest_dir)
newpath = os.path.join(dest_dir, self.filename)
archive_paths = list(path_map.items())
distinfo = os.path.join(workdir, info_dir)
info = distinfo, info_dir
self.write_records(info, workdir, archive_paths)
self.build_zip(newpath, archive_paths)
if dest_dir is None:
shutil.copyfile(newpath, pathname)
return modified
def compatible_tags():
"""
Return (pyver, abi, arch) tuples compatible with this Python.
"""
versions = [VER_SUFFIX]
major = VER_SUFFIX[0]
for minor in range(sys.version_info[1] - 1, - 1, -1):
versions.append(''.join([major, str(minor)]))
abis = []
for suffix, _, _ in imp.get_suffixes():
if suffix.startswith('.abi'):
abis.append(suffix.split('.', 2)[1])
abis.sort()
if ABI != 'none':
abis.insert(0, ABI)
abis.append('none')
result = []
arches = [ARCH]
if sys.platform == 'darwin':
m = re.match('(\w+)_(\d+)_(\d+)_(\w+)$', ARCH)
if m:
name, major, minor, arch = m.groups()
minor = int(minor)
matches = [arch]
if arch in ('i386', 'ppc'):
matches.append('fat')
if arch in ('i386', 'ppc', 'x86_64'):
matches.append('fat3')
if arch in ('ppc64', 'x86_64'):
matches.append('fat64')
if arch in ('i386', 'x86_64'):
matches.append('intel')
if arch in ('i386', 'x86_64', 'intel', 'ppc', 'ppc64'):
matches.append('universal')
while minor >= 0:
for match in matches:
s = '%s_%s_%s_%s' % (name, major, minor, match)
if s != ARCH: # already there
arches.append(s)
minor -= 1
# Most specific - our Python version, ABI and arch
for abi in abis:
for arch in arches:
result.append((''.join((IMP_PREFIX, versions[0])), abi, arch))
# where no ABI / arch dependency, but IMP_PREFIX dependency
for i, version in enumerate(versions):
result.append((''.join((IMP_PREFIX, version)), 'none', 'any'))
if i == 0:
result.append((''.join((IMP_PREFIX, version[0])), 'none', 'any'))
# no IMP_PREFIX, ABI or arch dependency
for i, version in enumerate(versions):
result.append((''.join(('py', version)), 'none', 'any'))
if i == 0:
result.append((''.join(('py', version[0])), 'none', 'any'))
return set(result)
COMPATIBLE_TAGS = compatible_tags()
del compatible_tags
def is_compatible(wheel, tags=None):
if not isinstance(wheel, Wheel):
wheel = Wheel(wheel) # assume it's a filename
result = False
if tags is None:
tags = COMPATIBLE_TAGS
for ver, abi, arch in tags:
if ver in wheel.pyver and abi in wheel.abi and arch in wheel.arch:
result = True
break
return result

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"""
HTML parsing library based on the WHATWG "HTML5"
specification. The parser is designed to be compatible with existing
HTML found in the wild and implements well-defined error recovery that
is largely compatible with modern desktop web browsers.
Example usage:
import html5lib
f = open("my_document.html")
tree = html5lib.parse(f)
"""
from __future__ import absolute_import, division, unicode_literals
from .html5parser import HTMLParser, parse, parseFragment
from .treebuilders import getTreeBuilder
from .treewalkers import getTreeWalker
from .serializer import serialize
__all__ = ["HTMLParser", "parse", "parseFragment", "getTreeBuilder",
"getTreeWalker", "serialize"]
__version__ = "0.999"

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panda/python/Lib/site-packages/pip/_vendor/html5lib/filters/__init__.py Normal file
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from __future__ import absolute_import, division, unicode_literals
class Filter(object):
def __init__(self, source):
self.source = source
def __iter__(self):
return iter(self.source)
def __getattr__(self, name):
return getattr(self.source, name)

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from __future__ import absolute_import, division, unicode_literals
from . import _base
try:
from collections import OrderedDict
except ImportError:
from ordereddict import OrderedDict
class Filter(_base.Filter):
def __iter__(self):
for token in _base.Filter.__iter__(self):
if token["type"] in ("StartTag", "EmptyTag"):
attrs = OrderedDict()
for name, value in sorted(token["data"].items(),
key=lambda x: x[0]):
attrs[name] = value
token["data"] = attrs
yield token

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panda/python/Lib/site-packages/pip/_vendor/html5lib/filters/inject_meta_charset.py Normal file
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from __future__ import absolute_import, division, unicode_literals
from . import _base
class Filter(_base.Filter):
def __init__(self, source, encoding):
_base.Filter.__init__(self, source)
self.encoding = encoding
def __iter__(self):
state = "pre_head"
meta_found = (self.encoding is None)
pending = []
for token in _base.Filter.__iter__(self):
type = token["type"]
if type == "StartTag":
if token["name"].lower() == "head":
state = "in_head"
elif type == "EmptyTag":
if token["name"].lower() == "meta":
# replace charset with actual encoding
has_http_equiv_content_type = False
for (namespace, name), value in token["data"].items():
if namespace is not None:
continue
elif name.lower() == 'charset':
token["data"][(namespace, name)] = self.encoding
meta_found = True
break
elif name == 'http-equiv' and value.lower() == 'content-type':
has_http_equiv_content_type = True
else:
if has_http_equiv_content_type and (None, "content") in token["data"]:
token["data"][(None, "content")] = 'text/html; charset=%s' % self.encoding
meta_found = True
elif token["name"].lower() == "head" and not meta_found:
# insert meta into empty head
yield {"type": "StartTag", "name": "head",
"data": token["data"]}
yield {"type": "EmptyTag", "name": "meta",
"data": {(None, "charset"): self.encoding}}
yield {"type": "EndTag", "name": "head"}
meta_found = True
continue
elif type == "EndTag":
if token["name"].lower() == "head" and pending:
# insert meta into head (if necessary) and flush pending queue
yield pending.pop(0)
if not meta_found:
yield {"type": "EmptyTag", "name": "meta",
"data": {(None, "charset"): self.encoding}}
while pending:
yield pending.pop(0)
meta_found = True
state = "post_head"
if state == "in_head":
pending.append(token)
else:
yield token

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from __future__ import absolute_import, division, unicode_literals
from gettext import gettext
_ = gettext
from . import _base
from ..constants import cdataElements, rcdataElements, voidElements
from ..constants import spaceCharacters
spaceCharacters = "".join(spaceCharacters)
class LintError(Exception):
pass
class Filter(_base.Filter):
def __iter__(self):
open_elements = []
contentModelFlag = "PCDATA"
for token in _base.Filter.__iter__(self):
type = token["type"]
if type in ("StartTag", "EmptyTag"):
name = token["name"]
if contentModelFlag != "PCDATA":
raise LintError(_("StartTag not in PCDATA content model flag: %(tag)s") % {"tag": name})
if not isinstance(name, str):
raise LintError(_("Tag name is not a string: %(tag)r") % {"tag": name})
if not name:
raise LintError(_("Empty tag name"))
if type == "StartTag" and name in voidElements:
raise LintError(_("Void element reported as StartTag token: %(tag)s") % {"tag": name})
elif type == "EmptyTag" and name not in voidElements:
raise LintError(_("Non-void element reported as EmptyTag token: %(tag)s") % {"tag": token["name"]})
if type == "StartTag":
open_elements.append(name)
for name, value in token["data"]:
if not isinstance(name, str):
raise LintError(_("Attribute name is not a string: %(name)r") % {"name": name})
if not name:
raise LintError(_("Empty attribute name"))
if not isinstance(value, str):
raise LintError(_("Attribute value is not a string: %(value)r") % {"value": value})
if name in cdataElements:
contentModelFlag = "CDATA"
elif name in rcdataElements:
contentModelFlag = "RCDATA"
elif name == "plaintext":
contentModelFlag = "PLAINTEXT"
elif type == "EndTag":
name = token["name"]
if not isinstance(name, str):
raise LintError(_("Tag name is not a string: %(tag)r") % {"tag": name})
if not name:
raise LintError(_("Empty tag name"))
if name in voidElements:
raise LintError(_("Void element reported as EndTag token: %(tag)s") % {"tag": name})
start_name = open_elements.pop()
if start_name != name:
raise LintError(_("EndTag (%(end)s) does not match StartTag (%(start)s)") % {"end": name, "start": start_name})
contentModelFlag = "PCDATA"
elif type == "Comment":
if contentModelFlag != "PCDATA":
raise LintError(_("Comment not in PCDATA content model flag"))
elif type in ("Characters", "SpaceCharacters"):
data = token["data"]
if not isinstance(data, str):
raise LintError(_("Attribute name is not a string: %(name)r") % {"name": data})
if not data:
raise LintError(_("%(type)s token with empty data") % {"type": type})
if type == "SpaceCharacters":
data = data.strip(spaceCharacters)
if data:
raise LintError(_("Non-space character(s) found in SpaceCharacters token: %(token)r") % {"token": data})
elif type == "Doctype":
name = token["name"]
if contentModelFlag != "PCDATA":
raise LintError(_("Doctype not in PCDATA content model flag: %(name)s") % {"name": name})
if not isinstance(name, str):
raise LintError(_("Tag name is not a string: %(tag)r") % {"tag": name})
# XXX: what to do with token["data"] ?
elif type in ("ParseError", "SerializeError"):
pass
else:
raise LintError(_("Unknown token type: %(type)s") % {"type": type})
yield token

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from __future__ import absolute_import, division, unicode_literals
from . import _base
class Filter(_base.Filter):
def slider(self):
previous1 = previous2 = None
for token in self.source:
if previous1 is not None:
yield previous2, previous1, token
previous2 = previous1
previous1 = token
yield previous2, previous1, None
def __iter__(self):
for previous, token, next in self.slider():
type = token["type"]
if type == "StartTag":
if (token["data"] or
not self.is_optional_start(token["name"], previous, next)):
yield token
elif type == "EndTag":
if not self.is_optional_end(token["name"], next):
yield token
else:
yield token
def is_optional_start(self, tagname, previous, next):
type = next and next["type"] or None
if tagname in 'html':
# An html element's start tag may be omitted if the first thing
# inside the html element is not a space character or a comment.
return type not in ("Comment", "SpaceCharacters")
elif tagname == 'head':
# A head element's start tag may be omitted if the first thing
# inside the head element is an element.
# XXX: we also omit the start tag if the head element is empty
if type in ("StartTag", "EmptyTag"):
return True
elif type == "EndTag":
return next["name"] == "head"
elif tagname == 'body':
# A body element's start tag may be omitted if the first thing
# inside the body element is not a space character or a comment,
# except if the first thing inside the body element is a script
# or style element and the node immediately preceding the body
# element is a head element whose end tag has been omitted.
if type in ("Comment", "SpaceCharacters"):
return False
elif type == "StartTag":
# XXX: we do not look at the preceding event, so we never omit
# the body element's start tag if it's followed by a script or
# a style element.
return next["name"] not in ('script', 'style')
else:
return True
elif tagname == 'colgroup':
# A colgroup element's start tag may be omitted if the first thing
# inside the colgroup element is a col element, and if the element
# is not immediately preceeded by another colgroup element whose
# end tag has been omitted.
if type in ("StartTag", "EmptyTag"):
# XXX: we do not look at the preceding event, so instead we never
# omit the colgroup element's end tag when it is immediately
# followed by another colgroup element. See is_optional_end.
return next["name"] == "col"
else:
return False
elif tagname == 'tbody':
# A tbody element's start tag may be omitted if the first thing
# inside the tbody element is a tr element, and if the element is
# not immediately preceeded by a tbody, thead, or tfoot element
# whose end tag has been omitted.
if type == "StartTag":
# omit the thead and tfoot elements' end tag when they are
# immediately followed by a tbody element. See is_optional_end.
if previous and previous['type'] == 'EndTag' and \
previous['name'] in ('tbody', 'thead', 'tfoot'):
return False
return next["name"] == 'tr'
else:
return False
return False
def is_optional_end(self, tagname, next):
type = next and next["type"] or None
if tagname in ('html', 'head', 'body'):
# An html element's end tag may be omitted if the html element
# is not immediately followed by a space character or a comment.
return type not in ("Comment", "SpaceCharacters")
elif tagname in ('li', 'optgroup', 'tr'):
# A li element's end tag may be omitted if the li element is
# immediately followed by another li element or if there is
# no more content in the parent element.
# An optgroup element's end tag may be omitted if the optgroup
# element is immediately followed by another optgroup element,
# or if there is no more content in the parent element.
# A tr element's end tag may be omitted if the tr element is
# immediately followed by another tr element, or if there is
# no more content in the parent element.
if type == "StartTag":
return next["name"] == tagname
else:
return type == "EndTag" or type is None
elif tagname in ('dt', 'dd'):
# A dt element's end tag may be omitted if the dt element is
# immediately followed by another dt element or a dd element.
# A dd element's end tag may be omitted if the dd element is
# immediately followed by another dd element or a dt element,
# or if there is no more content in the parent element.
if type == "StartTag":
return next["name"] in ('dt', 'dd')
elif tagname == 'dd':
return type == "EndTag" or type is None
else:
return False
elif tagname == 'p':
# A p element's end tag may be omitted if the p element is
# immediately followed by an address, article, aside,
# blockquote, datagrid, dialog, dir, div, dl, fieldset,
# footer, form, h1, h2, h3, h4, h5, h6, header, hr, menu,
# nav, ol, p, pre, section, table, or ul, element, or if
# there is no more content in the parent element.
if type in ("StartTag", "EmptyTag"):
return next["name"] in ('address', 'article', 'aside',
'blockquote', 'datagrid', 'dialog',
'dir', 'div', 'dl', 'fieldset', 'footer',
'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6',
'header', 'hr', 'menu', 'nav', 'ol',
'p', 'pre', 'section', 'table', 'ul')
else:
return type == "EndTag" or type is None
elif tagname == 'option':
# An option element's end tag may be omitted if the option
# element is immediately followed by another option element,
# or if it is immediately followed by an <code>optgroup</code>
# element, or if there is no more content in the parent
# element.
if type == "StartTag":
return next["name"] in ('option', 'optgroup')
else:
return type == "EndTag" or type is None
elif tagname in ('rt', 'rp'):
# An rt element's end tag may be omitted if the rt element is
# immediately followed by an rt or rp element, or if there is
# no more content in the parent element.
# An rp element's end tag may be omitted if the rp element is
# immediately followed by an rt or rp element, or if there is
# no more content in the parent element.
if type == "StartTag":
return next["name"] in ('rt', 'rp')
else:
return type == "EndTag" or type is None
elif tagname == 'colgroup':
# A colgroup element's end tag may be omitted if the colgroup
# element is not immediately followed by a space character or
# a comment.
if type in ("Comment", "SpaceCharacters"):
return False
elif type == "StartTag":
# XXX: we also look for an immediately following colgroup
# element. See is_optional_start.
return next["name"] != 'colgroup'
else:
return True
elif tagname in ('thead', 'tbody'):
# A thead element's end tag may be omitted if the thead element
# is immediately followed by a tbody or tfoot element.
# A tbody element's end tag may be omitted if the tbody element
# is immediately followed by a tbody or tfoot element, or if
# there is no more content in the parent element.
# A tfoot element's end tag may be omitted if the tfoot element
# is immediately followed by a tbody element, or if there is no
# more content in the parent element.
# XXX: we never omit the end tag when the following element is
# a tbody. See is_optional_start.
if type == "StartTag":
return next["name"] in ['tbody', 'tfoot']
elif tagname == 'tbody':
return type == "EndTag" or type is None
else:
return False
elif tagname == 'tfoot':
# A tfoot element's end tag may be omitted if the tfoot element
# is immediately followed by a tbody element, or if there is no
# more content in the parent element.
# XXX: we never omit the end tag when the following element is
# a tbody. See is_optional_start.
if type == "StartTag":
return next["name"] == 'tbody'
else:
return type == "EndTag" or type is None
elif tagname in ('td', 'th'):
# A td element's end tag may be omitted if the td element is
# immediately followed by a td or th element, or if there is
# no more content in the parent element.
# A th element's end tag may be omitted if the th element is
# immediately followed by a td or th element, or if there is
# no more content in the parent element.
if type == "StartTag":
return next["name"] in ('td', 'th')
else:
return type == "EndTag" or type is None
return False

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panda/python/Lib/site-packages/pip/_vendor/html5lib/filters/sanitizer.py Normal file
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from __future__ import absolute_import, division, unicode_literals
from . import _base
from ..sanitizer import HTMLSanitizerMixin
class Filter(_base.Filter, HTMLSanitizerMixin):
def __iter__(self):
for token in _base.Filter.__iter__(self):
token = self.sanitize_token(token)
if token:
yield token

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panda/python/Lib/site-packages/pip/_vendor/html5lib/filters/whitespace.py Normal file
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from __future__ import absolute_import, division, unicode_literals
import re
from . import _base
from ..constants import rcdataElements, spaceCharacters
spaceCharacters = "".join(spaceCharacters)
SPACES_REGEX = re.compile("[%s]+" % spaceCharacters)
class Filter(_base.Filter):
spacePreserveElements = frozenset(["pre", "textarea"] + list(rcdataElements))
def __iter__(self):
preserve = 0
for token in _base.Filter.__iter__(self):
type = token["type"]
if type == "StartTag" \
and (preserve or token["name"] in self.spacePreserveElements):
preserve += 1
elif type == "EndTag" and preserve:
preserve -= 1
elif not preserve and type == "SpaceCharacters" and token["data"]:
# Test on token["data"] above to not introduce spaces where there were not
token["data"] = " "
elif not preserve and type == "Characters":
token["data"] = collapse_spaces(token["data"])
yield token
def collapse_spaces(text):
return SPACES_REGEX.sub(' ', text)

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285
panda/python/Lib/site-packages/pip/_vendor/html5lib/ihatexml.py Normal file
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from __future__ import absolute_import, division, unicode_literals
import re
import warnings
from .constants import DataLossWarning
baseChar = """
[#x0041-#x005A] | [#x0061-#x007A] | [#x00C0-#x00D6] | [#x00D8-#x00F6] |
[#x00F8-#x00FF] | [#x0100-#x0131] | [#x0134-#x013E] | [#x0141-#x0148] |
[#x014A-#x017E] | [#x0180-#x01C3] | [#x01CD-#x01F0] | [#x01F4-#x01F5] |
[#x01FA-#x0217] | [#x0250-#x02A8] | [#x02BB-#x02C1] | #x0386 |
[#x0388-#x038A] | #x038C | [#x038E-#x03A1] | [#x03A3-#x03CE] |
[#x03D0-#x03D6] | #x03DA | #x03DC | #x03DE | #x03E0 | [#x03E2-#x03F3] |
[#x0401-#x040C] | [#x040E-#x044F] | [#x0451-#x045C] | [#x045E-#x0481] |
[#x0490-#x04C4] | [#x04C7-#x04C8] | [#x04CB-#x04CC] | [#x04D0-#x04EB] |
[#x04EE-#x04F5] | [#x04F8-#x04F9] | [#x0531-#x0556] | #x0559 |
[#x0561-#x0586] | [#x05D0-#x05EA] | [#x05F0-#x05F2] | [#x0621-#x063A] |
[#x0641-#x064A] | [#x0671-#x06B7] | [#x06BA-#x06BE] | [#x06C0-#x06CE] |
[#x06D0-#x06D3] | #x06D5 | [#x06E5-#x06E6] | [#x0905-#x0939] | #x093D |
[#x0958-#x0961] | [#x0985-#x098C] | [#x098F-#x0990] | [#x0993-#x09A8] |
[#x09AA-#x09B0] | #x09B2 | [#x09B6-#x09B9] | [#x09DC-#x09DD] |
[#x09DF-#x09E1] | [#x09F0-#x09F1] | [#x0A05-#x0A0A] | [#x0A0F-#x0A10] |
[#x0A13-#x0A28] | [#x0A2A-#x0A30] | [#x0A32-#x0A33] | [#x0A35-#x0A36] |
[#x0A38-#x0A39] | [#x0A59-#x0A5C] | #x0A5E | [#x0A72-#x0A74] |
[#x0A85-#x0A8B] | #x0A8D | [#x0A8F-#x0A91] | [#x0A93-#x0AA8] |
[#x0AAA-#x0AB0] | [#x0AB2-#x0AB3] | [#x0AB5-#x0AB9] | #x0ABD | #x0AE0 |
[#x0B05-#x0B0C] | [#x0B0F-#x0B10] | [#x0B13-#x0B28] | [#x0B2A-#x0B30] |
[#x0B32-#x0B33] | [#x0B36-#x0B39] | #x0B3D | [#x0B5C-#x0B5D] |
[#x0B5F-#x0B61] | [#x0B85-#x0B8A] | [#x0B8E-#x0B90] | [#x0B92-#x0B95] |
[#x0B99-#x0B9A] | #x0B9C | [#x0B9E-#x0B9F] | [#x0BA3-#x0BA4] |
[#x0BA8-#x0BAA] | [#x0BAE-#x0BB5] | [#x0BB7-#x0BB9] | [#x0C05-#x0C0C] |
[#x0C0E-#x0C10] | [#x0C12-#x0C28] | [#x0C2A-#x0C33] | [#x0C35-#x0C39] |
[#x0C60-#x0C61] | [#x0C85-#x0C8C] | [#x0C8E-#x0C90] | [#x0C92-#x0CA8] |
[#x0CAA-#x0CB3] | [#x0CB5-#x0CB9] | #x0CDE | [#x0CE0-#x0CE1] |
[#x0D05-#x0D0C] | [#x0D0E-#x0D10] | [#x0D12-#x0D28] | [#x0D2A-#x0D39] |
[#x0D60-#x0D61] | [#x0E01-#x0E2E] | #x0E30 | [#x0E32-#x0E33] |
[#x0E40-#x0E45] | [#x0E81-#x0E82] | #x0E84 | [#x0E87-#x0E88] | #x0E8A |
#x0E8D | [#x0E94-#x0E97] | [#x0E99-#x0E9F] | [#x0EA1-#x0EA3] | #x0EA5 |
#x0EA7 | [#x0EAA-#x0EAB] | [#x0EAD-#x0EAE] | #x0EB0 | [#x0EB2-#x0EB3] |
#x0EBD | [#x0EC0-#x0EC4] | [#x0F40-#x0F47] | [#x0F49-#x0F69] |
[#x10A0-#x10C5] | [#x10D0-#x10F6] | #x1100 | [#x1102-#x1103] |
[#x1105-#x1107] | #x1109 | [#x110B-#x110C] | [#x110E-#x1112] | #x113C |
#x113E | #x1140 | #x114C | #x114E | #x1150 | [#x1154-#x1155] | #x1159 |
[#x115F-#x1161] | #x1163 | #x1165 | #x1167 | #x1169 | [#x116D-#x116E] |
[#x1172-#x1173] | #x1175 | #x119E | #x11A8 | #x11AB | [#x11AE-#x11AF] |
[#x11B7-#x11B8] | #x11BA | [#x11BC-#x11C2] | #x11EB | #x11F0 | #x11F9 |
[#x1E00-#x1E9B] | [#x1EA0-#x1EF9] | [#x1F00-#x1F15] | [#x1F18-#x1F1D] |
[#x1F20-#x1F45] | [#x1F48-#x1F4D] | [#x1F50-#x1F57] | #x1F59 | #x1F5B |
#x1F5D | [#x1F5F-#x1F7D] | [#x1F80-#x1FB4] | [#x1FB6-#x1FBC] | #x1FBE |
[#x1FC2-#x1FC4] | [#x1FC6-#x1FCC] | [#x1FD0-#x1FD3] | [#x1FD6-#x1FDB] |
[#x1FE0-#x1FEC] | [#x1FF2-#x1FF4] | [#x1FF6-#x1FFC] | #x2126 |
[#x212A-#x212B] | #x212E | [#x2180-#x2182] | [#x3041-#x3094] |
[#x30A1-#x30FA] | [#x3105-#x312C] | [#xAC00-#xD7A3]"""
ideographic = """[#x4E00-#x9FA5] | #x3007 | [#x3021-#x3029]"""
combiningCharacter = """
[#x0300-#x0345] | [#x0360-#x0361] | [#x0483-#x0486] | [#x0591-#x05A1] |
[#x05A3-#x05B9] | [#x05BB-#x05BD] | #x05BF | [#x05C1-#x05C2] | #x05C4 |
[#x064B-#x0652] | #x0670 | [#x06D6-#x06DC] | [#x06DD-#x06DF] |
[#x06E0-#x06E4] | [#x06E7-#x06E8] | [#x06EA-#x06ED] | [#x0901-#x0903] |
#x093C | [#x093E-#x094C] | #x094D | [#x0951-#x0954] | [#x0962-#x0963] |
[#x0981-#x0983] | #x09BC | #x09BE | #x09BF | [#x09C0-#x09C4] |
[#x09C7-#x09C8] | [#x09CB-#x09CD] | #x09D7 | [#x09E2-#x09E3] | #x0A02 |
#x0A3C | #x0A3E | #x0A3F | [#x0A40-#x0A42] | [#x0A47-#x0A48] |
[#x0A4B-#x0A4D] | [#x0A70-#x0A71] | [#x0A81-#x0A83] | #x0ABC |
[#x0ABE-#x0AC5] | [#x0AC7-#x0AC9] | [#x0ACB-#x0ACD] | [#x0B01-#x0B03] |
#x0B3C | [#x0B3E-#x0B43] | [#x0B47-#x0B48] | [#x0B4B-#x0B4D] |
[#x0B56-#x0B57] | [#x0B82-#x0B83] | [#x0BBE-#x0BC2] | [#x0BC6-#x0BC8] |
[#x0BCA-#x0BCD] | #x0BD7 | [#x0C01-#x0C03] | [#x0C3E-#x0C44] |
[#x0C46-#x0C48] | [#x0C4A-#x0C4D] | [#x0C55-#x0C56] | [#x0C82-#x0C83] |
[#x0CBE-#x0CC4] | [#x0CC6-#x0CC8] | [#x0CCA-#x0CCD] | [#x0CD5-#x0CD6] |
[#x0D02-#x0D03] | [#x0D3E-#x0D43] | [#x0D46-#x0D48] | [#x0D4A-#x0D4D] |
#x0D57 | #x0E31 | [#x0E34-#x0E3A] | [#x0E47-#x0E4E] | #x0EB1 |
[#x0EB4-#x0EB9] | [#x0EBB-#x0EBC] | [#x0EC8-#x0ECD] | [#x0F18-#x0F19] |
#x0F35 | #x0F37 | #x0F39 | #x0F3E | #x0F3F | [#x0F71-#x0F84] |
[#x0F86-#x0F8B] | [#x0F90-#x0F95] | #x0F97 | [#x0F99-#x0FAD] |
[#x0FB1-#x0FB7] | #x0FB9 | [#x20D0-#x20DC] | #x20E1 | [#x302A-#x302F] |
#x3099 | #x309A"""
digit = """
[#x0030-#x0039] | [#x0660-#x0669] | [#x06F0-#x06F9] | [#x0966-#x096F] |
[#x09E6-#x09EF] | [#x0A66-#x0A6F] | [#x0AE6-#x0AEF] | [#x0B66-#x0B6F] |
[#x0BE7-#x0BEF] | [#x0C66-#x0C6F] | [#x0CE6-#x0CEF] | [#x0D66-#x0D6F] |
[#x0E50-#x0E59] | [#x0ED0-#x0ED9] | [#x0F20-#x0F29]"""
extender = """
#x00B7 | #x02D0 | #x02D1 | #x0387 | #x0640 | #x0E46 | #x0EC6 | #x3005 |
#[#x3031-#x3035] | [#x309D-#x309E] | [#x30FC-#x30FE]"""
letter = " | ".join([baseChar, ideographic])
# Without the
name = " | ".join([letter, digit, ".", "-", "_", combiningCharacter,
extender])
nameFirst = " | ".join([letter, "_"])
reChar = re.compile(r"#x([\d|A-F]{4,4})")
reCharRange = re.compile(r"\[#x([\d|A-F]{4,4})-#x([\d|A-F]{4,4})\]")
def charStringToList(chars):
charRanges = [item.strip() for item in chars.split(" | ")]
rv = []
for item in charRanges:
foundMatch = False
for regexp in (reChar, reCharRange):
match = regexp.match(item)
if match is not None:
rv.append([hexToInt(item) for item in match.groups()])
if len(rv[-1]) == 1:
rv[-1] = rv[-1] * 2
foundMatch = True
break
if not foundMatch:
assert len(item) == 1
rv.append([ord(item)] * 2)
rv = normaliseCharList(rv)
return rv
def normaliseCharList(charList):
charList = sorted(charList)
for item in charList:
assert item[1] >= item[0]
rv = []
i = 0
while i < len(charList):
j = 1
rv.append(charList[i])
while i + j < len(charList) and charList[i + j][0] <= rv[-1][1] + 1:
rv[-1][1] = charList[i + j][1]
j += 1
i += j
return rv
# We don't really support characters above the BMP :(
max_unicode = int("FFFF", 16)
def missingRanges(charList):
rv = []
if charList[0] != 0:
rv.append([0, charList[0][0] - 1])
for i, item in enumerate(charList[:-1]):
rv.append([item[1] + 1, charList[i + 1][0] - 1])
if charList[-1][1] != max_unicode:
rv.append([charList[-1][1] + 1, max_unicode])
return rv
def listToRegexpStr(charList):
rv = []
for item in charList:
if item[0] == item[1]:
rv.append(escapeRegexp(chr(item[0])))
else:
rv.append(escapeRegexp(chr(item[0])) + "-" +
escapeRegexp(chr(item[1])))
return "[%s]" % "".join(rv)
def hexToInt(hex_str):
return int(hex_str, 16)
def escapeRegexp(string):
specialCharacters = (".", "^", "$", "*", "+", "?", "{", "}",
"[", "]", "|", "(", ")", "-")
for char in specialCharacters:
string = string.replace(char, "\\" + char)
return string
# output from the above
nonXmlNameBMPRegexp = re.compile('[\x00-,/:-@\\[-\\^`\\{-\xb6\xb8-\xbf\xd7\xf7\u0132-\u0133\u013f-\u0140\u0149\u017f\u01c4-\u01cc\u01f1-\u01f3\u01f6-\u01f9\u0218-\u024f\u02a9-\u02ba\u02c2-\u02cf\u02d2-\u02ff\u0346-\u035f\u0362-\u0385\u038b\u038d\u03a2\u03cf\u03d7-\u03d9\u03db\u03dd\u03df\u03e1\u03f4-\u0400\u040d\u0450\u045d\u0482\u0487-\u048f\u04c5-\u04c6\u04c9-\u04ca\u04cd-\u04cf\u04ec-\u04ed\u04f6-\u04f7\u04fa-\u0530\u0557-\u0558\u055a-\u0560\u0587-\u0590\u05a2\u05ba\u05be\u05c0\u05c3\u05c5-\u05cf\u05eb-\u05ef\u05f3-\u0620\u063b-\u063f\u0653-\u065f\u066a-\u066f\u06b8-\u06b9\u06bf\u06cf\u06d4\u06e9\u06ee-\u06ef\u06fa-\u0900\u0904\u093a-\u093b\u094e-\u0950\u0955-\u0957\u0964-\u0965\u0970-\u0980\u0984\u098d-\u098e\u0991-\u0992\u09a9\u09b1\u09b3-\u09b5\u09ba-\u09bb\u09bd\u09c5-\u09c6\u09c9-\u09ca\u09ce-\u09d6\u09d8-\u09db\u09de\u09e4-\u09e5\u09f2-\u0a01\u0a03-\u0a04\u0a0b-\u0a0e\u0a11-\u0a12\u0a29\u0a31\u0a34\u0a37\u0a3a-\u0a3b\u0a3d\u0a43-\u0a46\u0a49-\u0a4a\u0a4e-\u0a58\u0a5d\u0a5f-\u0a65\u0a75-\u0a80\u0a84\u0a8c\u0a8e\u0a92\u0aa9\u0ab1\u0ab4\u0aba-\u0abb\u0ac6\u0aca\u0ace-\u0adf\u0ae1-\u0ae5\u0af0-\u0b00\u0b04\u0b0d-\u0b0e\u0b11-\u0b12\u0b29\u0b31\u0b34-\u0b35\u0b3a-\u0b3b\u0b44-\u0b46\u0b49-\u0b4a\u0b4e-\u0b55\u0b58-\u0b5b\u0b5e\u0b62-\u0b65\u0b70-\u0b81\u0b84\u0b8b-\u0b8d\u0b91\u0b96-\u0b98\u0b9b\u0b9d\u0ba0-\u0ba2\u0ba5-\u0ba7\u0bab-\u0bad\u0bb6\u0bba-\u0bbd\u0bc3-\u0bc5\u0bc9\u0bce-\u0bd6\u0bd8-\u0be6\u0bf0-\u0c00\u0c04\u0c0d\u0c11\u0c29\u0c34\u0c3a-\u0c3d\u0c45\u0c49\u0c4e-\u0c54\u0c57-\u0c5f\u0c62-\u0c65\u0c70-\u0c81\u0c84\u0c8d\u0c91\u0ca9\u0cb4\u0cba-\u0cbd\u0cc5\u0cc9\u0cce-\u0cd4\u0cd7-\u0cdd\u0cdf\u0ce2-\u0ce5\u0cf0-\u0d01\u0d04\u0d0d\u0d11\u0d29\u0d3a-\u0d3d\u0d44-\u0d45\u0d49\u0d4e-\u0d56\u0d58-\u0d5f\u0d62-\u0d65\u0d70-\u0e00\u0e2f\u0e3b-\u0e3f\u0e4f\u0e5a-\u0e80\u0e83\u0e85-\u0e86\u0e89\u0e8b-\u0e8c\u0e8e-\u0e93\u0e98\u0ea0\u0ea4\u0ea6\u0ea8-\u0ea9\u0eac\u0eaf\u0eba\u0ebe-\u0ebf\u0ec5\u0ec7\u0ece-\u0ecf\u0eda-\u0f17\u0f1a-\u0f1f\u0f2a-\u0f34\u0f36\u0f38\u0f3a-\u0f3d\u0f48\u0f6a-\u0f70\u0f85\u0f8c-\u0f8f\u0f96\u0f98\u0fae-\u0fb0\u0fb8\u0fba-\u109f\u10c6-\u10cf\u10f7-\u10ff\u1101\u1104\u1108\u110a\u110d\u1113-\u113b\u113d\u113f\u1141-\u114b\u114d\u114f\u1151-\u1153\u1156-\u1158\u115a-\u115e\u1162\u1164\u1166\u1168\u116a-\u116c\u116f-\u1171\u1174\u1176-\u119d\u119f-\u11a7\u11a9-\u11aa\u11ac-\u11ad\u11b0-\u11b6\u11b9\u11bb\u11c3-\u11ea\u11ec-\u11ef\u11f1-\u11f8\u11fa-\u1dff\u1e9c-\u1e9f\u1efa-\u1eff\u1f16-\u1f17\u1f1e-\u1f1f\u1f46-\u1f47\u1f4e-\u1f4f\u1f58\u1f5a\u1f5c\u1f5e\u1f7e-\u1f7f\u1fb5\u1fbd\u1fbf-\u1fc1\u1fc5\u1fcd-\u1fcf\u1fd4-\u1fd5\u1fdc-\u1fdf\u1fed-\u1ff1\u1ff5\u1ffd-\u20cf\u20dd-\u20e0\u20e2-\u2125\u2127-\u2129\u212c-\u212d\u212f-\u217f\u2183-\u3004\u3006\u3008-\u3020\u3030\u3036-\u3040\u3095-\u3098\u309b-\u309c\u309f-\u30a0\u30fb\u30ff-\u3104\u312d-\u4dff\u9fa6-\uabff\ud7a4-\uffff]')
nonXmlNameFirstBMPRegexp = re.compile('[\x00-@\\[-\\^`\\{-\xbf\xd7\xf7\u0132-\u0133\u013f-\u0140\u0149\u017f\u01c4-\u01cc\u01f1-\u01f3\u01f6-\u01f9\u0218-\u024f\u02a9-\u02ba\u02c2-\u0385\u0387\u038b\u038d\u03a2\u03cf\u03d7-\u03d9\u03db\u03dd\u03df\u03e1\u03f4-\u0400\u040d\u0450\u045d\u0482-\u048f\u04c5-\u04c6\u04c9-\u04ca\u04cd-\u04cf\u04ec-\u04ed\u04f6-\u04f7\u04fa-\u0530\u0557-\u0558\u055a-\u0560\u0587-\u05cf\u05eb-\u05ef\u05f3-\u0620\u063b-\u0640\u064b-\u0670\u06b8-\u06b9\u06bf\u06cf\u06d4\u06d6-\u06e4\u06e7-\u0904\u093a-\u093c\u093e-\u0957\u0962-\u0984\u098d-\u098e\u0991-\u0992\u09a9\u09b1\u09b3-\u09b5\u09ba-\u09db\u09de\u09e2-\u09ef\u09f2-\u0a04\u0a0b-\u0a0e\u0a11-\u0a12\u0a29\u0a31\u0a34\u0a37\u0a3a-\u0a58\u0a5d\u0a5f-\u0a71\u0a75-\u0a84\u0a8c\u0a8e\u0a92\u0aa9\u0ab1\u0ab4\u0aba-\u0abc\u0abe-\u0adf\u0ae1-\u0b04\u0b0d-\u0b0e\u0b11-\u0b12\u0b29\u0b31\u0b34-\u0b35\u0b3a-\u0b3c\u0b3e-\u0b5b\u0b5e\u0b62-\u0b84\u0b8b-\u0b8d\u0b91\u0b96-\u0b98\u0b9b\u0b9d\u0ba0-\u0ba2\u0ba5-\u0ba7\u0bab-\u0bad\u0bb6\u0bba-\u0c04\u0c0d\u0c11\u0c29\u0c34\u0c3a-\u0c5f\u0c62-\u0c84\u0c8d\u0c91\u0ca9\u0cb4\u0cba-\u0cdd\u0cdf\u0ce2-\u0d04\u0d0d\u0d11\u0d29\u0d3a-\u0d5f\u0d62-\u0e00\u0e2f\u0e31\u0e34-\u0e3f\u0e46-\u0e80\u0e83\u0e85-\u0e86\u0e89\u0e8b-\u0e8c\u0e8e-\u0e93\u0e98\u0ea0\u0ea4\u0ea6\u0ea8-\u0ea9\u0eac\u0eaf\u0eb1\u0eb4-\u0ebc\u0ebe-\u0ebf\u0ec5-\u0f3f\u0f48\u0f6a-\u109f\u10c6-\u10cf\u10f7-\u10ff\u1101\u1104\u1108\u110a\u110d\u1113-\u113b\u113d\u113f\u1141-\u114b\u114d\u114f\u1151-\u1153\u1156-\u1158\u115a-\u115e\u1162\u1164\u1166\u1168\u116a-\u116c\u116f-\u1171\u1174\u1176-\u119d\u119f-\u11a7\u11a9-\u11aa\u11ac-\u11ad\u11b0-\u11b6\u11b9\u11bb\u11c3-\u11ea\u11ec-\u11ef\u11f1-\u11f8\u11fa-\u1dff\u1e9c-\u1e9f\u1efa-\u1eff\u1f16-\u1f17\u1f1e-\u1f1f\u1f46-\u1f47\u1f4e-\u1f4f\u1f58\u1f5a\u1f5c\u1f5e\u1f7e-\u1f7f\u1fb5\u1fbd\u1fbf-\u1fc1\u1fc5\u1fcd-\u1fcf\u1fd4-\u1fd5\u1fdc-\u1fdf\u1fed-\u1ff1\u1ff5\u1ffd-\u2125\u2127-\u2129\u212c-\u212d\u212f-\u217f\u2183-\u3006\u3008-\u3020\u302a-\u3040\u3095-\u30a0\u30fb-\u3104\u312d-\u4dff\u9fa6-\uabff\ud7a4-\uffff]')
# Simpler things
nonPubidCharRegexp = re.compile("[^\x20\x0D\x0Aa-zA-Z0-9\-\'()+,./:=?;!*#@$_%]")
class InfosetFilter(object):
replacementRegexp = re.compile(r"U[\dA-F]{5,5}")
def __init__(self, replaceChars=None,
dropXmlnsLocalName=False,
dropXmlnsAttrNs=False,
preventDoubleDashComments=False,
preventDashAtCommentEnd=False,
replaceFormFeedCharacters=True,
preventSingleQuotePubid=False):
self.dropXmlnsLocalName = dropXmlnsLocalName
self.dropXmlnsAttrNs = dropXmlnsAttrNs
self.preventDoubleDashComments = preventDoubleDashComments
self.preventDashAtCommentEnd = preventDashAtCommentEnd
self.replaceFormFeedCharacters = replaceFormFeedCharacters
self.preventSingleQuotePubid = preventSingleQuotePubid
self.replaceCache = {}
def coerceAttribute(self, name, namespace=None):
if self.dropXmlnsLocalName and name.startswith("xmlns:"):
warnings.warn("Attributes cannot begin with xmlns", DataLossWarning)
return None
elif (self.dropXmlnsAttrNs and
namespace == "http://www.w3.org/2000/xmlns/"):
warnings.warn("Attributes cannot be in the xml namespace", DataLossWarning)
return None
else:
return self.toXmlName(name)
def coerceElement(self, name, namespace=None):
return self.toXmlName(name)
def coerceComment(self, data):
if self.preventDoubleDashComments:
while "--" in data:
warnings.warn("Comments cannot contain adjacent dashes", DataLossWarning)
data = data.replace("--", "- -")
return data
def coerceCharacters(self, data):
if self.replaceFormFeedCharacters:
for i in range(data.count("\x0C")):
warnings.warn("Text cannot contain U+000C", DataLossWarning)
data = data.replace("\x0C", " ")
# Other non-xml characters
return data
def coercePubid(self, data):
dataOutput = data
for char in nonPubidCharRegexp.findall(data):
warnings.warn("Coercing non-XML pubid", DataLossWarning)
replacement = self.getReplacementCharacter(char)
dataOutput = dataOutput.replace(char, replacement)
if self.preventSingleQuotePubid and dataOutput.find("'") >= 0:
warnings.warn("Pubid cannot contain single quote", DataLossWarning)
dataOutput = dataOutput.replace("'", self.getReplacementCharacter("'"))
return dataOutput
def toXmlName(self, name):
nameFirst = name[0]
nameRest = name[1:]
m = nonXmlNameFirstBMPRegexp.match(nameFirst)
if m:
warnings.warn("Coercing non-XML name", DataLossWarning)
nameFirstOutput = self.getReplacementCharacter(nameFirst)
else:
nameFirstOutput = nameFirst
nameRestOutput = nameRest
replaceChars = set(nonXmlNameBMPRegexp.findall(nameRest))
for char in replaceChars:
warnings.warn("Coercing non-XML name", DataLossWarning)
replacement = self.getReplacementCharacter(char)
nameRestOutput = nameRestOutput.replace(char, replacement)
return nameFirstOutput + nameRestOutput
def getReplacementCharacter(self, char):
if char in self.replaceCache:
replacement = self.replaceCache[char]
else:
replacement = self.escapeChar(char)
return replacement
def fromXmlName(self, name):
for item in set(self.replacementRegexp.findall(name)):
name = name.replace(item, self.unescapeChar(item))
return name
def escapeChar(self, char):
replacement = "U%05X" % ord(char)
self.replaceCache[char] = replacement
return replacement
def unescapeChar(self, charcode):
return chr(int(charcode[1:], 16))

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panda/python/Lib/site-packages/pip/_vendor/html5lib/inputstream.py Normal file
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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type
from pip._vendor.six.moves import http_client
import codecs
import re
from .constants import EOF, spaceCharacters, asciiLetters, asciiUppercase
from .constants import encodings, ReparseException
from . import utils
from io import StringIO
try:
from io import BytesIO
except ImportError:
BytesIO = StringIO
try:
from io import BufferedIOBase
except ImportError:
class BufferedIOBase(object):
pass
# Non-unicode versions of constants for use in the pre-parser
spaceCharactersBytes = frozenset([item.encode("ascii") for item in spaceCharacters])
asciiLettersBytes = frozenset([item.encode("ascii") for item in asciiLetters])
asciiUppercaseBytes = frozenset([item.encode("ascii") for item in asciiUppercase])
spacesAngleBrackets = spaceCharactersBytes | frozenset([b">", b"<"])
invalid_unicode_re = re.compile("[\u0001-\u0008\u000B\u000E-\u001F\u007F-\u009F\uD800-\uDFFF\uFDD0-\uFDEF\uFFFE\uFFFF\U0001FFFE\U0001FFFF\U0002FFFE\U0002FFFF\U0003FFFE\U0003FFFF\U0004FFFE\U0004FFFF\U0005FFFE\U0005FFFF\U0006FFFE\U0006FFFF\U0007FFFE\U0007FFFF\U0008FFFE\U0008FFFF\U0009FFFE\U0009FFFF\U000AFFFE\U000AFFFF\U000BFFFE\U000BFFFF\U000CFFFE\U000CFFFF\U000DFFFE\U000DFFFF\U000EFFFE\U000EFFFF\U000FFFFE\U000FFFFF\U0010FFFE\U0010FFFF]")
non_bmp_invalid_codepoints = set([0x1FFFE, 0x1FFFF, 0x2FFFE, 0x2FFFF, 0x3FFFE,
0x3FFFF, 0x4FFFE, 0x4FFFF, 0x5FFFE, 0x5FFFF,
0x6FFFE, 0x6FFFF, 0x7FFFE, 0x7FFFF, 0x8FFFE,
0x8FFFF, 0x9FFFE, 0x9FFFF, 0xAFFFE, 0xAFFFF,
0xBFFFE, 0xBFFFF, 0xCFFFE, 0xCFFFF, 0xDFFFE,
0xDFFFF, 0xEFFFE, 0xEFFFF, 0xFFFFE, 0xFFFFF,
0x10FFFE, 0x10FFFF])
ascii_punctuation_re = re.compile("[\u0009-\u000D\u0020-\u002F\u003A-\u0040\u005B-\u0060\u007B-\u007E]")
# Cache for charsUntil()
charsUntilRegEx = {}
class BufferedStream(object):
"""Buffering for streams that do not have buffering of their own
The buffer is implemented as a list of chunks on the assumption that
joining many strings will be slow since it is O(n**2)
"""
def __init__(self, stream):
self.stream = stream
self.buffer = []
self.position = [-1, 0] # chunk number, offset
def tell(self):
pos = 0
for chunk in self.buffer[:self.position[0]]:
pos += len(chunk)
pos += self.position[1]
return pos
def seek(self, pos):
assert pos <= self._bufferedBytes()
offset = pos
i = 0
while len(self.buffer[i]) < offset:
offset -= len(self.buffer[i])
i += 1
self.position = [i, offset]
def read(self, bytes):
if not self.buffer:
return self._readStream(bytes)
elif (self.position[0] == len(self.buffer) and
self.position[1] == len(self.buffer[-1])):
return self._readStream(bytes)
else:
return self._readFromBuffer(bytes)
def _bufferedBytes(self):
return sum([len(item) for item in self.buffer])
def _readStream(self, bytes):
data = self.stream.read(bytes)
self.buffer.append(data)
self.position[0] += 1
self.position[1] = len(data)
return data
def _readFromBuffer(self, bytes):
remainingBytes = bytes
rv = []
bufferIndex = self.position[0]
bufferOffset = self.position[1]
while bufferIndex < len(self.buffer) and remainingBytes != 0:
assert remainingBytes > 0
bufferedData = self.buffer[bufferIndex]
if remainingBytes <= len(bufferedData) - bufferOffset:
bytesToRead = remainingBytes
self.position = [bufferIndex, bufferOffset + bytesToRead]
else:
bytesToRead = len(bufferedData) - bufferOffset
self.position = [bufferIndex, len(bufferedData)]
bufferIndex += 1
rv.append(bufferedData[bufferOffset:bufferOffset + bytesToRead])
remainingBytes -= bytesToRead
bufferOffset = 0
if remainingBytes:
rv.append(self._readStream(remainingBytes))
return b"".join(rv)
def HTMLInputStream(source, encoding=None, parseMeta=True, chardet=True):
if isinstance(source, http_client.HTTPResponse):
# Work around Python bug #20007: read(0) closes the connection.
# http://bugs.python.org/issue20007
isUnicode = False
elif hasattr(source, "read"):
isUnicode = isinstance(source.read(0), text_type)
else:
isUnicode = isinstance(source, text_type)
if isUnicode:
if encoding is not None:
raise TypeError("Cannot explicitly set an encoding with a unicode string")
return HTMLUnicodeInputStream(source)
else:
return HTMLBinaryInputStream(source, encoding, parseMeta, chardet)
class HTMLUnicodeInputStream(object):
"""Provides a unicode stream of characters to the HTMLTokenizer.
This class takes care of character encoding and removing or replacing
incorrect byte-sequences and also provides column and line tracking.
"""
_defaultChunkSize = 10240
def __init__(self, source):
"""Initialises the HTMLInputStream.
HTMLInputStream(source, [encoding]) -> Normalized stream from source
for use by html5lib.
source can be either a file-object, local filename or a string.
The optional encoding parameter must be a string that indicates
the encoding. If specified, that encoding will be used,
regardless of any BOM or later declaration (such as in a meta
element)
parseMeta - Look for a <meta> element containing encoding information
"""
# Craziness
if len("\U0010FFFF") == 1:
self.reportCharacterErrors = self.characterErrorsUCS4
self.replaceCharactersRegexp = re.compile("[\uD800-\uDFFF]")
else:
self.reportCharacterErrors = self.characterErrorsUCS2
self.replaceCharactersRegexp = re.compile("([\uD800-\uDBFF](?![\uDC00-\uDFFF])|(?<![\uD800-\uDBFF])[\uDC00-\uDFFF])")
# List of where new lines occur
self.newLines = [0]
self.charEncoding = ("utf-8", "certain")
self.dataStream = self.openStream(source)
self.reset()
def reset(self):
self.chunk = ""
self.chunkSize = 0
self.chunkOffset = 0
self.errors = []
# number of (complete) lines in previous chunks
self.prevNumLines = 0
# number of columns in the last line of the previous chunk
self.prevNumCols = 0
# Deal with CR LF and surrogates split over chunk boundaries
self._bufferedCharacter = None
def openStream(self, source):
"""Produces a file object from source.
source can be either a file object, local filename or a string.
"""
# Already a file object
if hasattr(source, 'read'):
stream = source
else:
stream = StringIO(source)
return stream
def _position(self, offset):
chunk = self.chunk
nLines = chunk.count('\n', 0, offset)
positionLine = self.prevNumLines + nLines
lastLinePos = chunk.rfind('\n', 0, offset)
if lastLinePos == -1:
positionColumn = self.prevNumCols + offset
else:
positionColumn = offset - (lastLinePos + 1)
return (positionLine, positionColumn)
def position(self):
"""Returns (line, col) of the current position in the stream."""
line, col = self._position(self.chunkOffset)
return (line + 1, col)
def char(self):
""" Read one character from the stream or queue if available. Return
EOF when EOF is reached.
"""
# Read a new chunk from the input stream if necessary
if self.chunkOffset >= self.chunkSize:
if not self.readChunk():
return EOF
chunkOffset = self.chunkOffset
char = self.chunk[chunkOffset]
self.chunkOffset = chunkOffset + 1
return char
def readChunk(self, chunkSize=None):
if chunkSize is None:
chunkSize = self._defaultChunkSize
self.prevNumLines, self.prevNumCols = self._position(self.chunkSize)
self.chunk = ""
self.chunkSize = 0
self.chunkOffset = 0
data = self.dataStream.read(chunkSize)
# Deal with CR LF and surrogates broken across chunks
if self._bufferedCharacter:
data = self._bufferedCharacter + data
self._bufferedCharacter = None
elif not data:
# We have no more data, bye-bye stream
return False
if len(data) > 1:
lastv = ord(data[-1])
if lastv == 0x0D or 0xD800 <= lastv <= 0xDBFF:
self._bufferedCharacter = data[-1]
data = data[:-1]
self.reportCharacterErrors(data)
# Replace invalid characters
# Note U+0000 is dealt with in the tokenizer
data = self.replaceCharactersRegexp.sub("\ufffd", data)
data = data.replace("\r\n", "\n")
data = data.replace("\r", "\n")
self.chunk = data
self.chunkSize = len(data)
return True
def characterErrorsUCS4(self, data):
for i in range(len(invalid_unicode_re.findall(data))):
self.errors.append("invalid-codepoint")
def characterErrorsUCS2(self, data):
# Someone picked the wrong compile option
# You lose
skip = False
for match in invalid_unicode_re.finditer(data):
if skip:
continue
codepoint = ord(match.group())
pos = match.start()
# Pretty sure there should be endianness issues here
if utils.isSurrogatePair(data[pos:pos + 2]):
# We have a surrogate pair!
char_val = utils.surrogatePairToCodepoint(data[pos:pos + 2])
if char_val in non_bmp_invalid_codepoints:
self.errors.append("invalid-codepoint")
skip = True
elif (codepoint >= 0xD800 and codepoint <= 0xDFFF and
pos == len(data) - 1):
self.errors.append("invalid-codepoint")
else:
skip = False
self.errors.append("invalid-codepoint")
def charsUntil(self, characters, opposite=False):
""" Returns a string of characters from the stream up to but not
including any character in 'characters' or EOF. 'characters' must be
a container that supports the 'in' method and iteration over its
characters.
"""
# Use a cache of regexps to find the required characters
try:
chars = charsUntilRegEx[(characters, opposite)]
except KeyError:
if __debug__:
for c in characters:
assert(ord(c) < 128)
regex = "".join(["\\x%02x" % ord(c) for c in characters])
if not opposite:
regex = "^%s" % regex
chars = charsUntilRegEx[(characters, opposite)] = re.compile("[%s]+" % regex)
rv = []
while True:
# Find the longest matching prefix
m = chars.match(self.chunk, self.chunkOffset)
if m is None:
# If nothing matched, and it wasn't because we ran out of chunk,
# then stop
if self.chunkOffset != self.chunkSize:
break
else:
end = m.end()
# If not the whole chunk matched, return everything
# up to the part that didn't match
if end != self.chunkSize:
rv.append(self.chunk[self.chunkOffset:end])
self.chunkOffset = end
break
# If the whole remainder of the chunk matched,
# use it all and read the next chunk
rv.append(self.chunk[self.chunkOffset:])
if not self.readChunk():
# Reached EOF
break
r = "".join(rv)
return r
def unget(self, char):
# Only one character is allowed to be ungotten at once - it must
# be consumed again before any further call to unget
if char is not None:
if self.chunkOffset == 0:
# unget is called quite rarely, so it's a good idea to do
# more work here if it saves a bit of work in the frequently
# called char and charsUntil.
# So, just prepend the ungotten character onto the current
# chunk:
self.chunk = char + self.chunk
self.chunkSize += 1
else:
self.chunkOffset -= 1
assert self.chunk[self.chunkOffset] == char
class HTMLBinaryInputStream(HTMLUnicodeInputStream):
"""Provides a unicode stream of characters to the HTMLTokenizer.
This class takes care of character encoding and removing or replacing
incorrect byte-sequences and also provides column and line tracking.
"""
def __init__(self, source, encoding=None, parseMeta=True, chardet=True):
"""Initialises the HTMLInputStream.
HTMLInputStream(source, [encoding]) -> Normalized stream from source
for use by html5lib.
source can be either a file-object, local filename or a string.
The optional encoding parameter must be a string that indicates
the encoding. If specified, that encoding will be used,
regardless of any BOM or later declaration (such as in a meta
element)
parseMeta - Look for a <meta> element containing encoding information
"""
# Raw Stream - for unicode objects this will encode to utf-8 and set
# self.charEncoding as appropriate
self.rawStream = self.openStream(source)
HTMLUnicodeInputStream.__init__(self, self.rawStream)
self.charEncoding = (codecName(encoding), "certain")
# Encoding Information
# Number of bytes to use when looking for a meta element with
# encoding information
self.numBytesMeta = 512
# Number of bytes to use when using detecting encoding using chardet
self.numBytesChardet = 100
# Encoding to use if no other information can be found
self.defaultEncoding = "windows-1252"
# Detect encoding iff no explicit "transport level" encoding is supplied
if (self.charEncoding[0] is None):
self.charEncoding = self.detectEncoding(parseMeta, chardet)
# Call superclass
self.reset()
def reset(self):
self.dataStream = codecs.getreader(self.charEncoding[0])(self.rawStream,
'replace')
HTMLUnicodeInputStream.reset(self)
def openStream(self, source):
"""Produces a file object from source.
source can be either a file object, local filename or a string.
"""
# Already a file object
if hasattr(source, 'read'):
stream = source
else:
stream = BytesIO(source)
try:
stream.seek(stream.tell())
except:
stream = BufferedStream(stream)
return stream
def detectEncoding(self, parseMeta=True, chardet=True):
# First look for a BOM
# This will also read past the BOM if present
encoding = self.detectBOM()
confidence = "certain"
# If there is no BOM need to look for meta elements with encoding
# information
if encoding is None and parseMeta:
encoding = self.detectEncodingMeta()
confidence = "tentative"
# Guess with chardet, if avaliable
if encoding is None and chardet:
confidence = "tentative"
try:
try:
from charade.universaldetector import UniversalDetector
except ImportError:
from chardet.universaldetector import UniversalDetector
buffers = []
detector = UniversalDetector()
while not detector.done:
buffer = self.rawStream.read(self.numBytesChardet)
assert isinstance(buffer, bytes)
if not buffer:
break
buffers.append(buffer)
detector.feed(buffer)
detector.close()
encoding = detector.result['encoding']
self.rawStream.seek(0)
except ImportError:
pass
# If all else fails use the default encoding
if encoding is None:
confidence = "tentative"
encoding = self.defaultEncoding
# Substitute for equivalent encodings:
encodingSub = {"iso-8859-1": "windows-1252"}
if encoding.lower() in encodingSub:
encoding = encodingSub[encoding.lower()]
return encoding, confidence
def changeEncoding(self, newEncoding):
assert self.charEncoding[1] != "certain"
newEncoding = codecName(newEncoding)
if newEncoding in ("utf-16", "utf-16-be", "utf-16-le"):
newEncoding = "utf-8"
if newEncoding is None:
return
elif newEncoding == self.charEncoding[0]:
self.charEncoding = (self.charEncoding[0], "certain")
else:
self.rawStream.seek(0)
self.reset()
self.charEncoding = (newEncoding, "certain")
raise ReparseException("Encoding changed from %s to %s" % (self.charEncoding[0], newEncoding))
def detectBOM(self):
"""Attempts to detect at BOM at the start of the stream. If
an encoding can be determined from the BOM return the name of the
encoding otherwise return None"""
bomDict = {
codecs.BOM_UTF8: 'utf-8',
codecs.BOM_UTF16_LE: 'utf-16-le', codecs.BOM_UTF16_BE: 'utf-16-be',
codecs.BOM_UTF32_LE: 'utf-32-le', codecs.BOM_UTF32_BE: 'utf-32-be'
}
# Go to beginning of file and read in 4 bytes
string = self.rawStream.read(4)
assert isinstance(string, bytes)
# Try detecting the BOM using bytes from the string
encoding = bomDict.get(string[:3]) # UTF-8
seek = 3
if not encoding:
# Need to detect UTF-32 before UTF-16
encoding = bomDict.get(string) # UTF-32
seek = 4
if not encoding:
encoding = bomDict.get(string[:2]) # UTF-16
seek = 2
# Set the read position past the BOM if one was found, otherwise
# set it to the start of the stream
self.rawStream.seek(encoding and seek or 0)
return encoding
def detectEncodingMeta(self):
"""Report the encoding declared by the meta element
"""
buffer = self.rawStream.read(self.numBytesMeta)
assert isinstance(buffer, bytes)
parser = EncodingParser(buffer)
self.rawStream.seek(0)
encoding = parser.getEncoding()
if encoding in ("utf-16", "utf-16-be", "utf-16-le"):
encoding = "utf-8"
return encoding
class EncodingBytes(bytes):
"""String-like object with an associated position and various extra methods
If the position is ever greater than the string length then an exception is
raised"""
def __new__(self, value):
assert isinstance(value, bytes)
return bytes.__new__(self, value.lower())
def __init__(self, value):
self._position = -1
def __iter__(self):
return self
def __next__(self):
p = self._position = self._position + 1
if p >= len(self):
raise StopIteration
elif p < 0:
raise TypeError
return self[p:p + 1]
def next(self):
# Py2 compat
return self.__next__()
def previous(self):
p = self._position
if p >= len(self):
raise StopIteration
elif p < 0:
raise TypeError
self._position = p = p - 1
return self[p:p + 1]
def setPosition(self, position):
if self._position >= len(self):
raise StopIteration
self._position = position
def getPosition(self):
if self._position >= len(self):
raise StopIteration
if self._position >= 0:
return self._position
else:
return None
position = property(getPosition, setPosition)
def getCurrentByte(self):
return self[self.position:self.position + 1]
currentByte = property(getCurrentByte)
def skip(self, chars=spaceCharactersBytes):
"""Skip past a list of characters"""
p = self.position # use property for the error-checking
while p < len(self):
c = self[p:p + 1]
if c not in chars:
self._position = p
return c
p += 1
self._position = p
return None
def skipUntil(self, chars):
p = self.position
while p < len(self):
c = self[p:p + 1]
if c in chars:
self._position = p
return c
p += 1
self._position = p
return None
def matchBytes(self, bytes):
"""Look for a sequence of bytes at the start of a string. If the bytes
are found return True and advance the position to the byte after the
match. Otherwise return False and leave the position alone"""
p = self.position
data = self[p:p + len(bytes)]
rv = data.startswith(bytes)
if rv:
self.position += len(bytes)
return rv
def jumpTo(self, bytes):
"""Look for the next sequence of bytes matching a given sequence. If
a match is found advance the position to the last byte of the match"""
newPosition = self[self.position:].find(bytes)
if newPosition > -1:
# XXX: This is ugly, but I can't see a nicer way to fix this.
if self._position == -1:
self._position = 0
self._position += (newPosition + len(bytes) - 1)
return True
else:
raise StopIteration
class EncodingParser(object):
"""Mini parser for detecting character encoding from meta elements"""
def __init__(self, data):
"""string - the data to work on for encoding detection"""
self.data = EncodingBytes(data)
self.encoding = None
def getEncoding(self):
methodDispatch = (
(b"<!--", self.handleComment),
(b"<meta", self.handleMeta),
(b"</", self.handlePossibleEndTag),
(b"<!", self.handleOther),
(b"<?", self.handleOther),
(b"<", self.handlePossibleStartTag))
for byte in self.data:
keepParsing = True
for key, method in methodDispatch:
if self.data.matchBytes(key):
try:
keepParsing = method()
break
except StopIteration:
keepParsing = False
break
if not keepParsing:
break
return self.encoding
def handleComment(self):
"""Skip over comments"""
return self.data.jumpTo(b"-->")
def handleMeta(self):
if self.data.currentByte not in spaceCharactersBytes:
# if we have <meta not followed by a space so just keep going
return True
# We have a valid meta element we want to search for attributes
hasPragma = False
pendingEncoding = None
while True:
# Try to find the next attribute after the current position
attr = self.getAttribute()
if attr is None:
return True
else:
if attr[0] == b"http-equiv":
hasPragma = attr[1] == b"content-type"
if hasPragma and pendingEncoding is not None:
self.encoding = pendingEncoding
return False
elif attr[0] == b"charset":
tentativeEncoding = attr[1]
codec = codecName(tentativeEncoding)
if codec is not None:
self.encoding = codec
return False
elif attr[0] == b"content":
contentParser = ContentAttrParser(EncodingBytes(attr[1]))
tentativeEncoding = contentParser.parse()
if tentativeEncoding is not None:
codec = codecName(tentativeEncoding)
if codec is not None:
if hasPragma:
self.encoding = codec
return False
else:
pendingEncoding = codec
def handlePossibleStartTag(self):
return self.handlePossibleTag(False)
def handlePossibleEndTag(self):
next(self.data)
return self.handlePossibleTag(True)
def handlePossibleTag(self, endTag):
data = self.data
if data.currentByte not in asciiLettersBytes:
# If the next byte is not an ascii letter either ignore this
# fragment (possible start tag case) or treat it according to
# handleOther
if endTag:
data.previous()
self.handleOther()
return True
c = data.skipUntil(spacesAngleBrackets)
if c == b"<":
# return to the first step in the overall "two step" algorithm
# reprocessing the < byte
data.previous()
else:
# Read all attributes
attr = self.getAttribute()
while attr is not None:
attr = self.getAttribute()
return True
def handleOther(self):
return self.data.jumpTo(b">")
def getAttribute(self):
"""Return a name,value pair for the next attribute in the stream,
if one is found, or None"""
data = self.data
# Step 1 (skip chars)
c = data.skip(spaceCharactersBytes | frozenset([b"/"]))
assert c is None or len(c) == 1
# Step 2
if c in (b">", None):
return None
# Step 3
attrName = []
attrValue = []
# Step 4 attribute name
while True:
if c == b"=" and attrName:
break
elif c in spaceCharactersBytes:
# Step 6!
c = data.skip()
break
elif c in (b"/", b">"):
return b"".join(attrName), b""
elif c in asciiUppercaseBytes:
attrName.append(c.lower())
elif c is None:
return None
else:
attrName.append(c)
# Step 5
c = next(data)
# Step 7
if c != b"=":
data.previous()
return b"".join(attrName), b""
# Step 8
next(data)
# Step 9
c = data.skip()
# Step 10
if c in (b"'", b'"'):
# 10.1
quoteChar = c
while True:
# 10.2
c = next(data)
# 10.3
if c == quoteChar:
next(data)
return b"".join(attrName), b"".join(attrValue)
# 10.4
elif c in asciiUppercaseBytes:
attrValue.append(c.lower())
# 10.5
else:
attrValue.append(c)
elif c == b">":
return b"".join(attrName), b""
elif c in asciiUppercaseBytes:
attrValue.append(c.lower())
elif c is None:
return None
else:
attrValue.append(c)
# Step 11
while True:
c = next(data)
if c in spacesAngleBrackets:
return b"".join(attrName), b"".join(attrValue)
elif c in asciiUppercaseBytes:
attrValue.append(c.lower())
elif c is None:
return None
else:
attrValue.append(c)
class ContentAttrParser(object):
def __init__(self, data):
assert isinstance(data, bytes)
self.data = data
def parse(self):
try:
# Check if the attr name is charset
# otherwise return
self.data.jumpTo(b"charset")
self.data.position += 1
self.data.skip()
if not self.data.currentByte == b"=":
# If there is no = sign keep looking for attrs
return None
self.data.position += 1
self.data.skip()
# Look for an encoding between matching quote marks
if self.data.currentByte in (b'"', b"'"):
quoteMark = self.data.currentByte
self.data.position += 1
oldPosition = self.data.position
if self.data.jumpTo(quoteMark):
return self.data[oldPosition:self.data.position]
else:
return None
else:
# Unquoted value
oldPosition = self.data.position
try:
self.data.skipUntil(spaceCharactersBytes)
return self.data[oldPosition:self.data.position]
except StopIteration:
# Return the whole remaining value
return self.data[oldPosition:]
except StopIteration:
return None
def codecName(encoding):
"""Return the python codec name corresponding to an encoding or None if the
string doesn't correspond to a valid encoding."""
if isinstance(encoding, bytes):
try:
encoding = encoding.decode("ascii")
except UnicodeDecodeError:
return None
if encoding:
canonicalName = ascii_punctuation_re.sub("", encoding).lower()
return encodings.get(canonicalName, None)
else:
return None

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from __future__ import absolute_import, division, unicode_literals
import re
from xml.sax.saxutils import escape, unescape
from .tokenizer import HTMLTokenizer
from .constants import tokenTypes
class HTMLSanitizerMixin(object):
""" sanitization of XHTML+MathML+SVG and of inline style attributes."""
acceptable_elements = ['a', 'abbr', 'acronym', 'address', 'area',
'article', 'aside', 'audio', 'b', 'big', 'blockquote', 'br', 'button',
'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup',
'command', 'datagrid', 'datalist', 'dd', 'del', 'details', 'dfn',
'dialog', 'dir', 'div', 'dl', 'dt', 'em', 'event-source', 'fieldset',
'figcaption', 'figure', 'footer', 'font', 'form', 'header', 'h1',
'h2', 'h3', 'h4', 'h5', 'h6', 'hr', 'i', 'img', 'input', 'ins',
'keygen', 'kbd', 'label', 'legend', 'li', 'm', 'map', 'menu', 'meter',
'multicol', 'nav', 'nextid', 'ol', 'output', 'optgroup', 'option',
'p', 'pre', 'progress', 'q', 's', 'samp', 'section', 'select',
'small', 'sound', 'source', 'spacer', 'span', 'strike', 'strong',
'sub', 'sup', 'table', 'tbody', 'td', 'textarea', 'time', 'tfoot',
'th', 'thead', 'tr', 'tt', 'u', 'ul', 'var', 'video']
mathml_elements = ['maction', 'math', 'merror', 'mfrac', 'mi',
'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom',
'mprescripts', 'mroot', 'mrow', 'mspace', 'msqrt', 'mstyle', 'msub',
'msubsup', 'msup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder',
'munderover', 'none']
svg_elements = ['a', 'animate', 'animateColor', 'animateMotion',
'animateTransform', 'clipPath', 'circle', 'defs', 'desc', 'ellipse',
'font-face', 'font-face-name', 'font-face-src', 'g', 'glyph', 'hkern',
'linearGradient', 'line', 'marker', 'metadata', 'missing-glyph',
'mpath', 'path', 'polygon', 'polyline', 'radialGradient', 'rect',
'set', 'stop', 'svg', 'switch', 'text', 'title', 'tspan', 'use']
acceptable_attributes = ['abbr', 'accept', 'accept-charset', 'accesskey',
'action', 'align', 'alt', 'autocomplete', 'autofocus', 'axis',
'background', 'balance', 'bgcolor', 'bgproperties', 'border',
'bordercolor', 'bordercolordark', 'bordercolorlight', 'bottompadding',
'cellpadding', 'cellspacing', 'ch', 'challenge', 'char', 'charoff',
'choff', 'charset', 'checked', 'cite', 'class', 'clear', 'color',
'cols', 'colspan', 'compact', 'contenteditable', 'controls', 'coords',
'data', 'datafld', 'datapagesize', 'datasrc', 'datetime', 'default',
'delay', 'dir', 'disabled', 'draggable', 'dynsrc', 'enctype', 'end',
'face', 'for', 'form', 'frame', 'galleryimg', 'gutter', 'headers',
'height', 'hidefocus', 'hidden', 'high', 'href', 'hreflang', 'hspace',
'icon', 'id', 'inputmode', 'ismap', 'keytype', 'label', 'leftspacing',
'lang', 'list', 'longdesc', 'loop', 'loopcount', 'loopend',
'loopstart', 'low', 'lowsrc', 'max', 'maxlength', 'media', 'method',
'min', 'multiple', 'name', 'nohref', 'noshade', 'nowrap', 'open',
'optimum', 'pattern', 'ping', 'point-size', 'poster', 'pqg', 'preload',
'prompt', 'radiogroup', 'readonly', 'rel', 'repeat-max', 'repeat-min',
'replace', 'required', 'rev', 'rightspacing', 'rows', 'rowspan',
'rules', 'scope', 'selected', 'shape', 'size', 'span', 'src', 'start',
'step', 'style', 'summary', 'suppress', 'tabindex', 'target',
'template', 'title', 'toppadding', 'type', 'unselectable', 'usemap',
'urn', 'valign', 'value', 'variable', 'volume', 'vspace', 'vrml',
'width', 'wrap', 'xml:lang']
mathml_attributes = ['actiontype', 'align', 'columnalign', 'columnalign',
'columnalign', 'columnlines', 'columnspacing', 'columnspan', 'depth',
'display', 'displaystyle', 'equalcolumns', 'equalrows', 'fence',
'fontstyle', 'fontweight', 'frame', 'height', 'linethickness', 'lspace',
'mathbackground', 'mathcolor', 'mathvariant', 'mathvariant', 'maxsize',
'minsize', 'other', 'rowalign', 'rowalign', 'rowalign', 'rowlines',
'rowspacing', 'rowspan', 'rspace', 'scriptlevel', 'selection',
'separator', 'stretchy', 'width', 'width', 'xlink:href', 'xlink:show',
'xlink:type', 'xmlns', 'xmlns:xlink']
svg_attributes = ['accent-height', 'accumulate', 'additive', 'alphabetic',
'arabic-form', 'ascent', 'attributeName', 'attributeType',
'baseProfile', 'bbox', 'begin', 'by', 'calcMode', 'cap-height',
'class', 'clip-path', 'color', 'color-rendering', 'content', 'cx',
'cy', 'd', 'dx', 'dy', 'descent', 'display', 'dur', 'end', 'fill',
'fill-opacity', 'fill-rule', 'font-family', 'font-size',
'font-stretch', 'font-style', 'font-variant', 'font-weight', 'from',
'fx', 'fy', 'g1', 'g2', 'glyph-name', 'gradientUnits', 'hanging',
'height', 'horiz-adv-x', 'horiz-origin-x', 'id', 'ideographic', 'k',
'keyPoints', 'keySplines', 'keyTimes', 'lang', 'marker-end',
'marker-mid', 'marker-start', 'markerHeight', 'markerUnits',
'markerWidth', 'mathematical', 'max', 'min', 'name', 'offset',
'opacity', 'orient', 'origin', 'overline-position',
'overline-thickness', 'panose-1', 'path', 'pathLength', 'points',
'preserveAspectRatio', 'r', 'refX', 'refY', 'repeatCount',
'repeatDur', 'requiredExtensions', 'requiredFeatures', 'restart',
'rotate', 'rx', 'ry', 'slope', 'stemh', 'stemv', 'stop-color',
'stop-opacity', 'strikethrough-position', 'strikethrough-thickness',
'stroke', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap',
'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity',
'stroke-width', 'systemLanguage', 'target', 'text-anchor', 'to',
'transform', 'type', 'u1', 'u2', 'underline-position',
'underline-thickness', 'unicode', 'unicode-range', 'units-per-em',
'values', 'version', 'viewBox', 'visibility', 'width', 'widths', 'x',
'x-height', 'x1', 'x2', 'xlink:actuate', 'xlink:arcrole',
'xlink:href', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type',
'xml:base', 'xml:lang', 'xml:space', 'xmlns', 'xmlns:xlink', 'y',
'y1', 'y2', 'zoomAndPan']
attr_val_is_uri = ['href', 'src', 'cite', 'action', 'longdesc', 'poster',
'xlink:href', 'xml:base']
svg_attr_val_allows_ref = ['clip-path', 'color-profile', 'cursor', 'fill',
'filter', 'marker', 'marker-start', 'marker-mid', 'marker-end',
'mask', 'stroke']
svg_allow_local_href = ['altGlyph', 'animate', 'animateColor',
'animateMotion', 'animateTransform', 'cursor', 'feImage', 'filter',
'linearGradient', 'pattern', 'radialGradient', 'textpath', 'tref',
'set', 'use']
acceptable_css_properties = ['azimuth', 'background-color',
'border-bottom-color', 'border-collapse', 'border-color',
'border-left-color', 'border-right-color', 'border-top-color', 'clear',
'color', 'cursor', 'direction', 'display', 'elevation', 'float', 'font',
'font-family', 'font-size', 'font-style', 'font-variant', 'font-weight',
'height', 'letter-spacing', 'line-height', 'overflow', 'pause',
'pause-after', 'pause-before', 'pitch', 'pitch-range', 'richness',
'speak', 'speak-header', 'speak-numeral', 'speak-punctuation',
'speech-rate', 'stress', 'text-align', 'text-decoration', 'text-indent',
'unicode-bidi', 'vertical-align', 'voice-family', 'volume',
'white-space', 'width']
acceptable_css_keywords = ['auto', 'aqua', 'black', 'block', 'blue',
'bold', 'both', 'bottom', 'brown', 'center', 'collapse', 'dashed',
'dotted', 'fuchsia', 'gray', 'green', '!important', 'italic', 'left',
'lime', 'maroon', 'medium', 'none', 'navy', 'normal', 'nowrap', 'olive',
'pointer', 'purple', 'red', 'right', 'solid', 'silver', 'teal', 'top',
'transparent', 'underline', 'white', 'yellow']
acceptable_svg_properties = ['fill', 'fill-opacity', 'fill-rule',
'stroke', 'stroke-width', 'stroke-linecap', 'stroke-linejoin',
'stroke-opacity']
acceptable_protocols = ['ed2k', 'ftp', 'http', 'https', 'irc',
'mailto', 'news', 'gopher', 'nntp', 'telnet', 'webcal',
'xmpp', 'callto', 'feed', 'urn', 'aim', 'rsync', 'tag',
'ssh', 'sftp', 'rtsp', 'afs']
# subclasses may define their own versions of these constants
allowed_elements = acceptable_elements + mathml_elements + svg_elements
allowed_attributes = acceptable_attributes + mathml_attributes + svg_attributes
allowed_css_properties = acceptable_css_properties
allowed_css_keywords = acceptable_css_keywords
allowed_svg_properties = acceptable_svg_properties
allowed_protocols = acceptable_protocols
# Sanitize the +html+, escaping all elements not in ALLOWED_ELEMENTS, and
# stripping out all # attributes not in ALLOWED_ATTRIBUTES. Style
# attributes are parsed, and a restricted set, # specified by
# ALLOWED_CSS_PROPERTIES and ALLOWED_CSS_KEYWORDS, are allowed through.
# attributes in ATTR_VAL_IS_URI are scanned, and only URI schemes specified
# in ALLOWED_PROTOCOLS are allowed.
#
# sanitize_html('<script> do_nasty_stuff() </script>')
# => &lt;script> do_nasty_stuff() &lt;/script>
# sanitize_html('<a href="javascript: sucker();">Click here for $100</a>')
# => <a>Click here for $100</a>
def sanitize_token(self, token):
# accommodate filters which use token_type differently
token_type = token["type"]
if token_type in list(tokenTypes.keys()):
token_type = tokenTypes[token_type]
if token_type in (tokenTypes["StartTag"], tokenTypes["EndTag"],
tokenTypes["EmptyTag"]):
if token["name"] in self.allowed_elements:
return self.allowed_token(token, token_type)
else:
return self.disallowed_token(token, token_type)
elif token_type == tokenTypes["Comment"]:
pass
else:
return token
def allowed_token(self, token, token_type):
if "data" in token:
attrs = dict([(name, val) for name, val in
token["data"][::-1]
if name in self.allowed_attributes])
for attr in self.attr_val_is_uri:
if attr not in attrs:
continue
val_unescaped = re.sub("[`\000-\040\177-\240\s]+", '',
unescape(attrs[attr])).lower()
# remove replacement characters from unescaped characters
val_unescaped = val_unescaped.replace("\ufffd", "")
if (re.match("^[a-z0-9][-+.a-z0-9]*:", val_unescaped) and
(val_unescaped.split(':')[0] not in
self.allowed_protocols)):
del attrs[attr]
for attr in self.svg_attr_val_allows_ref:
if attr in attrs:
attrs[attr] = re.sub(r'url\s*\(\s*[^#\s][^)]+?\)',
' ',
unescape(attrs[attr]))
if (token["name"] in self.svg_allow_local_href and
'xlink:href' in attrs and re.search('^\s*[^#\s].*',
attrs['xlink:href'])):
del attrs['xlink:href']
if 'style' in attrs:
attrs['style'] = self.sanitize_css(attrs['style'])
token["data"] = [[name, val] for name, val in list(attrs.items())]
return token
def disallowed_token(self, token, token_type):
if token_type == tokenTypes["EndTag"]:
token["data"] = "</%s>" % token["name"]
elif token["data"]:
attrs = ''.join([' %s="%s"' % (k, escape(v)) for k, v in token["data"]])
token["data"] = "<%s%s>" % (token["name"], attrs)
else:
token["data"] = "<%s>" % token["name"]
if token.get("selfClosing"):
token["data"] = token["data"][:-1] + "/>"
if token["type"] in list(tokenTypes.keys()):
token["type"] = "Characters"
else:
token["type"] = tokenTypes["Characters"]
del token["name"]
return token
def sanitize_css(self, style):
# disallow urls
style = re.compile('url\s*\(\s*[^\s)]+?\s*\)\s*').sub(' ', style)
# gauntlet
if not re.match("""^([:,;#%.\sa-zA-Z0-9!]|\w-\w|'[\s\w]+'|"[\s\w]+"|\([\d,\s]+\))*$""", style):
return ''
if not re.match("^\s*([-\w]+\s*:[^:;]*(;\s*|$))*$", style):
return ''
clean = []
for prop, value in re.findall("([-\w]+)\s*:\s*([^:;]*)", style):
if not value:
continue
if prop.lower() in self.allowed_css_properties:
clean.append(prop + ': ' + value + ';')
elif prop.split('-')[0].lower() in ['background', 'border', 'margin',
'padding']:
for keyword in value.split():
if not keyword in self.acceptable_css_keywords and \
not re.match("^(#[0-9a-f]+|rgb\(\d+%?,\d*%?,?\d*%?\)?|\d{0,2}\.?\d{0,2}(cm|em|ex|in|mm|pc|pt|px|%|,|\))?)$", keyword):
break
else:
clean.append(prop + ': ' + value + ';')
elif prop.lower() in self.allowed_svg_properties:
clean.append(prop + ': ' + value + ';')
return ' '.join(clean)
class HTMLSanitizer(HTMLTokenizer, HTMLSanitizerMixin):
def __init__(self, stream, encoding=None, parseMeta=True, useChardet=True,
lowercaseElementName=False, lowercaseAttrName=False, parser=None):
# Change case matching defaults as we only output lowercase html anyway
# This solution doesn't seem ideal...
HTMLTokenizer.__init__(self, stream, encoding, parseMeta, useChardet,
lowercaseElementName, lowercaseAttrName, parser=parser)
def __iter__(self):
for token in HTMLTokenizer.__iter__(self):
token = self.sanitize_token(token)
if token:
yield token

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from __future__ import absolute_import, division, unicode_literals
from .. import treewalkers
from .htmlserializer import HTMLSerializer
def serialize(input, tree="etree", format="html", encoding=None,
**serializer_opts):
# XXX: Should we cache this?
walker = treewalkers.getTreeWalker(tree)
if format == "html":
s = HTMLSerializer(**serializer_opts)
else:
raise ValueError("type must be html")
return s.render(walker(input), encoding)

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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type
import gettext
_ = gettext.gettext
try:
from functools import reduce
except ImportError:
pass
from ..constants import voidElements, booleanAttributes, spaceCharacters
from ..constants import rcdataElements, entities, xmlEntities
from .. import utils
from xml.sax.saxutils import escape
spaceCharacters = "".join(spaceCharacters)
try:
from codecs import register_error, xmlcharrefreplace_errors
except ImportError:
unicode_encode_errors = "strict"
else:
unicode_encode_errors = "htmlentityreplace"
encode_entity_map = {}
is_ucs4 = len("\U0010FFFF") == 1
for k, v in list(entities.items()):
# skip multi-character entities
if ((is_ucs4 and len(v) > 1) or
(not is_ucs4 and len(v) > 2)):
continue
if v != "&":
if len(v) == 2:
v = utils.surrogatePairToCodepoint(v)
else:
v = ord(v)
if not v in encode_entity_map or k.islower():
# prefer &lt; over &LT; and similarly for &amp;, &gt;, etc.
encode_entity_map[v] = k
def htmlentityreplace_errors(exc):
if isinstance(exc, (UnicodeEncodeError, UnicodeTranslateError)):
res = []
codepoints = []
skip = False
for i, c in enumerate(exc.object[exc.start:exc.end]):
if skip:
skip = False
continue
index = i + exc.start
if utils.isSurrogatePair(exc.object[index:min([exc.end, index + 2])]):
codepoint = utils.surrogatePairToCodepoint(exc.object[index:index + 2])
skip = True
else:
codepoint = ord(c)
codepoints.append(codepoint)
for cp in codepoints:
e = encode_entity_map.get(cp)
if e:
res.append("&")
res.append(e)
if not e.endswith(";"):
res.append(";")
else:
res.append("&#x%s;" % (hex(cp)[2:]))
return ("".join(res), exc.end)
else:
return xmlcharrefreplace_errors(exc)
register_error(unicode_encode_errors, htmlentityreplace_errors)
del register_error
class HTMLSerializer(object):
# attribute quoting options
quote_attr_values = False
quote_char = '"'
use_best_quote_char = True
# tag syntax options
omit_optional_tags = True
minimize_boolean_attributes = True
use_trailing_solidus = False
space_before_trailing_solidus = True
# escaping options
escape_lt_in_attrs = False
escape_rcdata = False
resolve_entities = True
# miscellaneous options
alphabetical_attributes = False
inject_meta_charset = True
strip_whitespace = False
sanitize = False
options = ("quote_attr_values", "quote_char", "use_best_quote_char",
"omit_optional_tags", "minimize_boolean_attributes",
"use_trailing_solidus", "space_before_trailing_solidus",
"escape_lt_in_attrs", "escape_rcdata", "resolve_entities",
"alphabetical_attributes", "inject_meta_charset",
"strip_whitespace", "sanitize")
def __init__(self, **kwargs):
"""Initialize HTMLSerializer.
Keyword options (default given first unless specified) include:
inject_meta_charset=True|False
Whether it insert a meta element to define the character set of the
document.
quote_attr_values=True|False
Whether to quote attribute values that don't require quoting
per HTML5 parsing rules.
quote_char=u'"'|u"'"
Use given quote character for attribute quoting. Default is to
use double quote unless attribute value contains a double quote,
in which case single quotes are used instead.
escape_lt_in_attrs=False|True
Whether to escape < in attribute values.
escape_rcdata=False|True
Whether to escape characters that need to be escaped within normal
elements within rcdata elements such as style.
resolve_entities=True|False
Whether to resolve named character entities that appear in the
source tree. The XML predefined entities &lt; &gt; &amp; &quot; &apos;
are unaffected by this setting.
strip_whitespace=False|True
Whether to remove semantically meaningless whitespace. (This
compresses all whitespace to a single space except within pre.)
minimize_boolean_attributes=True|False
Shortens boolean attributes to give just the attribute value,
for example <input disabled="disabled"> becomes <input disabled>.
use_trailing_solidus=False|True
Includes a close-tag slash at the end of the start tag of void
elements (empty elements whose end tag is forbidden). E.g. <hr/>.
space_before_trailing_solidus=True|False
Places a space immediately before the closing slash in a tag
using a trailing solidus. E.g. <hr />. Requires use_trailing_solidus.
sanitize=False|True
Strip all unsafe or unknown constructs from output.
See `html5lib user documentation`_
omit_optional_tags=True|False
Omit start/end tags that are optional.
alphabetical_attributes=False|True
Reorder attributes to be in alphabetical order.
.. _html5lib user documentation: http://code.google.com/p/html5lib/wiki/UserDocumentation
"""
if 'quote_char' in kwargs:
self.use_best_quote_char = False
for attr in self.options:
setattr(self, attr, kwargs.get(attr, getattr(self, attr)))
self.errors = []
self.strict = False
def encode(self, string):
assert(isinstance(string, text_type))
if self.encoding:
return string.encode(self.encoding, unicode_encode_errors)
else:
return string
def encodeStrict(self, string):
assert(isinstance(string, text_type))
if self.encoding:
return string.encode(self.encoding, "strict")
else:
return string
def serialize(self, treewalker, encoding=None):
self.encoding = encoding
in_cdata = False
self.errors = []
if encoding and self.inject_meta_charset:
from ..filters.inject_meta_charset import Filter
treewalker = Filter(treewalker, encoding)
# WhitespaceFilter should be used before OptionalTagFilter
# for maximum efficiently of this latter filter
if self.strip_whitespace:
from ..filters.whitespace import Filter
treewalker = Filter(treewalker)
if self.sanitize:
from ..filters.sanitizer import Filter
treewalker = Filter(treewalker)
if self.omit_optional_tags:
from ..filters.optionaltags import Filter
treewalker = Filter(treewalker)
# Alphabetical attributes must be last, as other filters
# could add attributes and alter the order
if self.alphabetical_attributes:
from ..filters.alphabeticalattributes import Filter
treewalker = Filter(treewalker)
for token in treewalker:
type = token["type"]
if type == "Doctype":
doctype = "<!DOCTYPE %s" % token["name"]
if token["publicId"]:
doctype += ' PUBLIC "%s"' % token["publicId"]
elif token["systemId"]:
doctype += " SYSTEM"
if token["systemId"]:
if token["systemId"].find('"') >= 0:
if token["systemId"].find("'") >= 0:
self.serializeError(_("System identifer contains both single and double quote characters"))
quote_char = "'"
else:
quote_char = '"'
doctype += " %s%s%s" % (quote_char, token["systemId"], quote_char)
doctype += ">"
yield self.encodeStrict(doctype)
elif type in ("Characters", "SpaceCharacters"):
if type == "SpaceCharacters" or in_cdata:
if in_cdata and token["data"].find("</") >= 0:
self.serializeError(_("Unexpected </ in CDATA"))
yield self.encode(token["data"])
else:
yield self.encode(escape(token["data"]))
elif type in ("StartTag", "EmptyTag"):
name = token["name"]
yield self.encodeStrict("<%s" % name)
if name in rcdataElements and not self.escape_rcdata:
in_cdata = True
elif in_cdata:
self.serializeError(_("Unexpected child element of a CDATA element"))
for (attr_namespace, attr_name), attr_value in token["data"].items():
# TODO: Add namespace support here
k = attr_name
v = attr_value
yield self.encodeStrict(' ')
yield self.encodeStrict(k)
if not self.minimize_boolean_attributes or \
(k not in booleanAttributes.get(name, tuple())
and k not in booleanAttributes.get("", tuple())):
yield self.encodeStrict("=")
if self.quote_attr_values or not v:
quote_attr = True
else:
quote_attr = reduce(lambda x, y: x or (y in v),
spaceCharacters + ">\"'=", False)
v = v.replace("&", "&amp;")
if self.escape_lt_in_attrs:
v = v.replace("<", "&lt;")
if quote_attr:
quote_char = self.quote_char
if self.use_best_quote_char:
if "'" in v and '"' not in v:
quote_char = '"'
elif '"' in v and "'" not in v:
quote_char = "'"
if quote_char == "'":
v = v.replace("'", "&#39;")
else:
v = v.replace('"', "&quot;")
yield self.encodeStrict(quote_char)
yield self.encode(v)
yield self.encodeStrict(quote_char)
else:
yield self.encode(v)
if name in voidElements and self.use_trailing_solidus:
if self.space_before_trailing_solidus:
yield self.encodeStrict(" /")
else:
yield self.encodeStrict("/")
yield self.encode(">")
elif type == "EndTag":
name = token["name"]
if name in rcdataElements:
in_cdata = False
elif in_cdata:
self.serializeError(_("Unexpected child element of a CDATA element"))
yield self.encodeStrict("</%s>" % name)
elif type == "Comment":
data = token["data"]
if data.find("--") >= 0:
self.serializeError(_("Comment contains --"))
yield self.encodeStrict("<!--%s-->" % token["data"])
elif type == "Entity":
name = token["name"]
key = name + ";"
if not key in entities:
self.serializeError(_("Entity %s not recognized" % name))
if self.resolve_entities and key not in xmlEntities:
data = entities[key]
else:
data = "&%s;" % name
yield self.encodeStrict(data)
else:
self.serializeError(token["data"])
def render(self, treewalker, encoding=None):
if encoding:
return b"".join(list(self.serialize(treewalker, encoding)))
else:
return "".join(list(self.serialize(treewalker)))
def serializeError(self, data="XXX ERROR MESSAGE NEEDED"):
# XXX The idea is to make data mandatory.
self.errors.append(data)
if self.strict:
raise SerializeError
def SerializeError(Exception):
"""Error in serialized tree"""
pass

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from __future__ import absolute_import, division, unicode_literals
from xml.sax.xmlreader import AttributesNSImpl
from ..constants import adjustForeignAttributes, unadjustForeignAttributes
prefix_mapping = {}
for prefix, localName, namespace in adjustForeignAttributes.values():
if prefix is not None:
prefix_mapping[prefix] = namespace
def to_sax(walker, handler):
"""Call SAX-like content handler based on treewalker walker"""
handler.startDocument()
for prefix, namespace in prefix_mapping.items():
handler.startPrefixMapping(prefix, namespace)
for token in walker:
type = token["type"]
if type == "Doctype":
continue
elif type in ("StartTag", "EmptyTag"):
attrs = AttributesNSImpl(token["data"],
unadjustForeignAttributes)
handler.startElementNS((token["namespace"], token["name"]),
token["name"],
attrs)
if type == "EmptyTag":
handler.endElementNS((token["namespace"], token["name"]),
token["name"])
elif type == "EndTag":
handler.endElementNS((token["namespace"], token["name"]),
token["name"])
elif type in ("Characters", "SpaceCharacters"):
handler.characters(token["data"])
elif type == "Comment":
pass
else:
assert False, "Unknown token type"
for prefix, namespace in prefix_mapping.items():
handler.endPrefixMapping(prefix)
handler.endDocument()

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"""A collection of modules for building different kinds of tree from
HTML documents.
To create a treebuilder for a new type of tree, you need to do
implement several things:
1) A set of classes for various types of elements: Document, Doctype,
Comment, Element. These must implement the interface of
_base.treebuilders.Node (although comment nodes have a different
signature for their constructor, see treebuilders.etree.Comment)
Textual content may also be implemented as another node type, or not, as
your tree implementation requires.
2) A treebuilder object (called TreeBuilder by convention) that
inherits from treebuilders._base.TreeBuilder. This has 4 required attributes:
documentClass - the class to use for the bottommost node of a document
elementClass - the class to use for HTML Elements
commentClass - the class to use for comments
doctypeClass - the class to use for doctypes
It also has one required method:
getDocument - Returns the root node of the complete document tree
3) If you wish to run the unit tests, you must also create a
testSerializer method on your treebuilder which accepts a node and
returns a string containing Node and its children serialized according
to the format used in the unittests
"""
from __future__ import absolute_import, division, unicode_literals
from ..utils import default_etree
treeBuilderCache = {}
def getTreeBuilder(treeType, implementation=None, **kwargs):
"""Get a TreeBuilder class for various types of tree with built-in support
treeType - the name of the tree type required (case-insensitive). Supported
values are:
"dom" - A generic builder for DOM implementations, defaulting to
a xml.dom.minidom based implementation.
"etree" - A generic builder for tree implementations exposing an
ElementTree-like interface, defaulting to
xml.etree.cElementTree if available and
xml.etree.ElementTree if not.
"lxml" - A etree-based builder for lxml.etree, handling
limitations of lxml's implementation.
implementation - (Currently applies to the "etree" and "dom" tree types). A
module implementing the tree type e.g.
xml.etree.ElementTree or xml.etree.cElementTree."""
treeType = treeType.lower()
if treeType not in treeBuilderCache:
if treeType == "dom":
from . import dom
# Come up with a sane default (pref. from the stdlib)
if implementation is None:
from xml.dom import minidom
implementation = minidom
# NEVER cache here, caching is done in the dom submodule
return dom.getDomModule(implementation, **kwargs).TreeBuilder
elif treeType == "lxml":
from . import etree_lxml
treeBuilderCache[treeType] = etree_lxml.TreeBuilder
elif treeType == "etree":
from . import etree
if implementation is None:
implementation = default_etree
# NEVER cache here, caching is done in the etree submodule
return etree.getETreeModule(implementation, **kwargs).TreeBuilder
else:
raise ValueError("""Unrecognised treebuilder "%s" """ % treeType)
return treeBuilderCache.get(treeType)

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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type
from ..constants import scopingElements, tableInsertModeElements, namespaces
# The scope markers are inserted when entering object elements,
# marquees, table cells, and table captions, and are used to prevent formatting
# from "leaking" into tables, object elements, and marquees.
Marker = None
listElementsMap = {
None: (frozenset(scopingElements), False),
"button": (frozenset(scopingElements | set([(namespaces["html"], "button")])), False),
"list": (frozenset(scopingElements | set([(namespaces["html"], "ol"),
(namespaces["html"], "ul")])), False),
"table": (frozenset([(namespaces["html"], "html"),
(namespaces["html"], "table")]), False),
"select": (frozenset([(namespaces["html"], "optgroup"),
(namespaces["html"], "option")]), True)
}
class Node(object):
def __init__(self, name):
"""Node representing an item in the tree.
name - The tag name associated with the node
parent - The parent of the current node (or None for the document node)
value - The value of the current node (applies to text nodes and
comments
attributes - a dict holding name, value pairs for attributes of the node
childNodes - a list of child nodes of the current node. This must
include all elements but not necessarily other node types
_flags - A list of miscellaneous flags that can be set on the node
"""
self.name = name
self.parent = None
self.value = None
self.attributes = {}
self.childNodes = []
self._flags = []
def __str__(self):
attributesStr = " ".join(["%s=\"%s\"" % (name, value)
for name, value in
self.attributes.items()])
if attributesStr:
return "<%s %s>" % (self.name, attributesStr)
else:
return "<%s>" % (self.name)
def __repr__(self):
return "<%s>" % (self.name)
def appendChild(self, node):
"""Insert node as a child of the current node
"""
raise NotImplementedError
def insertText(self, data, insertBefore=None):
"""Insert data as text in the current node, positioned before the
start of node insertBefore or to the end of the node's text.
"""
raise NotImplementedError
def insertBefore(self, node, refNode):
"""Insert node as a child of the current node, before refNode in the
list of child nodes. Raises ValueError if refNode is not a child of
the current node"""
raise NotImplementedError
def removeChild(self, node):
"""Remove node from the children of the current node
"""
raise NotImplementedError
def reparentChildren(self, newParent):
"""Move all the children of the current node to newParent.
This is needed so that trees that don't store text as nodes move the
text in the correct way
"""
# XXX - should this method be made more general?
for child in self.childNodes:
newParent.appendChild(child)
self.childNodes = []
def cloneNode(self):
"""Return a shallow copy of the current node i.e. a node with the same
name and attributes but with no parent or child nodes
"""
raise NotImplementedError
def hasContent(self):
"""Return true if the node has children or text, false otherwise
"""
raise NotImplementedError
class ActiveFormattingElements(list):
def append(self, node):
equalCount = 0
if node != Marker:
for element in self[::-1]:
if element == Marker:
break
if self.nodesEqual(element, node):
equalCount += 1
if equalCount == 3:
self.remove(element)
break
list.append(self, node)
def nodesEqual(self, node1, node2):
if not node1.nameTuple == node2.nameTuple:
return False
if not node1.attributes == node2.attributes:
return False
return True
class TreeBuilder(object):
"""Base treebuilder implementation
documentClass - the class to use for the bottommost node of a document
elementClass - the class to use for HTML Elements
commentClass - the class to use for comments
doctypeClass - the class to use for doctypes
"""
# Document class
documentClass = None
# The class to use for creating a node
elementClass = None
# The class to use for creating comments
commentClass = None
# The class to use for creating doctypes
doctypeClass = None
# Fragment class
fragmentClass = None
def __init__(self, namespaceHTMLElements):
if namespaceHTMLElements:
self.defaultNamespace = "http://www.w3.org/1999/xhtml"
else:
self.defaultNamespace = None
self.reset()
def reset(self):
self.openElements = []
self.activeFormattingElements = ActiveFormattingElements()
# XXX - rename these to headElement, formElement
self.headPointer = None
self.formPointer = None
self.insertFromTable = False
self.document = self.documentClass()
def elementInScope(self, target, variant=None):
# If we pass a node in we match that. if we pass a string
# match any node with that name
exactNode = hasattr(target, "nameTuple")
listElements, invert = listElementsMap[variant]
for node in reversed(self.openElements):
if (node.name == target and not exactNode or
node == target and exactNode):
return True
elif (invert ^ (node.nameTuple in listElements)):
return False
assert False # We should never reach this point
def reconstructActiveFormattingElements(self):
# Within this algorithm the order of steps described in the
# specification is not quite the same as the order of steps in the
# code. It should still do the same though.
# Step 1: stop the algorithm when there's nothing to do.
if not self.activeFormattingElements:
return
# Step 2 and step 3: we start with the last element. So i is -1.
i = len(self.activeFormattingElements) - 1
entry = self.activeFormattingElements[i]
if entry == Marker or entry in self.openElements:
return
# Step 6
while entry != Marker and entry not in self.openElements:
if i == 0:
# This will be reset to 0 below
i = -1
break
i -= 1
# Step 5: let entry be one earlier in the list.
entry = self.activeFormattingElements[i]
while True:
# Step 7
i += 1
# Step 8
entry = self.activeFormattingElements[i]
clone = entry.cloneNode() # Mainly to get a new copy of the attributes
# Step 9
element = self.insertElement({"type": "StartTag",
"name": clone.name,
"namespace": clone.namespace,
"data": clone.attributes})
# Step 10
self.activeFormattingElements[i] = element
# Step 11
if element == self.activeFormattingElements[-1]:
break
def clearActiveFormattingElements(self):
entry = self.activeFormattingElements.pop()
while self.activeFormattingElements and entry != Marker:
entry = self.activeFormattingElements.pop()
def elementInActiveFormattingElements(self, name):
"""Check if an element exists between the end of the active
formatting elements and the last marker. If it does, return it, else
return false"""
for item in self.activeFormattingElements[::-1]:
# Check for Marker first because if it's a Marker it doesn't have a
# name attribute.
if item == Marker:
break
elif item.name == name:
return item
return False
def insertRoot(self, token):
element = self.createElement(token)
self.openElements.append(element)
self.document.appendChild(element)
def insertDoctype(self, token):
name = token["name"]
publicId = token["publicId"]
systemId = token["systemId"]
doctype = self.doctypeClass(name, publicId, systemId)
self.document.appendChild(doctype)
def insertComment(self, token, parent=None):
if parent is None:
parent = self.openElements[-1]
parent.appendChild(self.commentClass(token["data"]))
def createElement(self, token):
"""Create an element but don't insert it anywhere"""
name = token["name"]
namespace = token.get("namespace", self.defaultNamespace)
element = self.elementClass(name, namespace)
element.attributes = token["data"]
return element
def _getInsertFromTable(self):
return self._insertFromTable
def _setInsertFromTable(self, value):
"""Switch the function used to insert an element from the
normal one to the misnested table one and back again"""
self._insertFromTable = value
if value:
self.insertElement = self.insertElementTable
else:
self.insertElement = self.insertElementNormal
insertFromTable = property(_getInsertFromTable, _setInsertFromTable)
def insertElementNormal(self, token):
name = token["name"]
assert isinstance(name, text_type), "Element %s not unicode" % name
namespace = token.get("namespace", self.defaultNamespace)
element = self.elementClass(name, namespace)
element.attributes = token["data"]
self.openElements[-1].appendChild(element)
self.openElements.append(element)
return element
def insertElementTable(self, token):
"""Create an element and insert it into the tree"""
element = self.createElement(token)
if self.openElements[-1].name not in tableInsertModeElements:
return self.insertElementNormal(token)
else:
# We should be in the InTable mode. This means we want to do
# special magic element rearranging
parent, insertBefore = self.getTableMisnestedNodePosition()
if insertBefore is None:
parent.appendChild(element)
else:
parent.insertBefore(element, insertBefore)
self.openElements.append(element)
return element
def insertText(self, data, parent=None):
"""Insert text data."""
if parent is None:
parent = self.openElements[-1]
if (not self.insertFromTable or (self.insertFromTable and
self.openElements[-1].name
not in tableInsertModeElements)):
parent.insertText(data)
else:
# We should be in the InTable mode. This means we want to do
# special magic element rearranging
parent, insertBefore = self.getTableMisnestedNodePosition()
parent.insertText(data, insertBefore)
def getTableMisnestedNodePosition(self):
"""Get the foster parent element, and sibling to insert before
(or None) when inserting a misnested table node"""
# The foster parent element is the one which comes before the most
# recently opened table element
# XXX - this is really inelegant
lastTable = None
fosterParent = None
insertBefore = None
for elm in self.openElements[::-1]:
if elm.name == "table":
lastTable = elm
break
if lastTable:
# XXX - we should really check that this parent is actually a
# node here
if lastTable.parent:
fosterParent = lastTable.parent
insertBefore = lastTable
else:
fosterParent = self.openElements[
self.openElements.index(lastTable) - 1]
else:
fosterParent = self.openElements[0]
return fosterParent, insertBefore
def generateImpliedEndTags(self, exclude=None):
name = self.openElements[-1].name
# XXX td, th and tr are not actually needed
if (name in frozenset(("dd", "dt", "li", "option", "optgroup", "p", "rp", "rt"))
and name != exclude):
self.openElements.pop()
# XXX This is not entirely what the specification says. We should
# investigate it more closely.
self.generateImpliedEndTags(exclude)
def getDocument(self):
"Return the final tree"
return self.document
def getFragment(self):
"Return the final fragment"
# assert self.innerHTML
fragment = self.fragmentClass()
self.openElements[0].reparentChildren(fragment)
return fragment
def testSerializer(self, node):
"""Serialize the subtree of node in the format required by unit tests
node - the node from which to start serializing"""
raise NotImplementedError

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from __future__ import absolute_import, division, unicode_literals
from xml.dom import minidom, Node
import weakref
from . import _base
from .. import constants
from ..constants import namespaces
from ..utils import moduleFactoryFactory
def getDomBuilder(DomImplementation):
Dom = DomImplementation
class AttrList(object):
def __init__(self, element):
self.element = element
def __iter__(self):
return list(self.element.attributes.items()).__iter__()
def __setitem__(self, name, value):
self.element.setAttribute(name, value)
def __len__(self):
return len(list(self.element.attributes.items()))
def items(self):
return [(item[0], item[1]) for item in
list(self.element.attributes.items())]
def keys(self):
return list(self.element.attributes.keys())
def __getitem__(self, name):
return self.element.getAttribute(name)
def __contains__(self, name):
if isinstance(name, tuple):
raise NotImplementedError
else:
return self.element.hasAttribute(name)
class NodeBuilder(_base.Node):
def __init__(self, element):
_base.Node.__init__(self, element.nodeName)
self.element = element
namespace = property(lambda self: hasattr(self.element, "namespaceURI")
and self.element.namespaceURI or None)
def appendChild(self, node):
node.parent = self
self.element.appendChild(node.element)
def insertText(self, data, insertBefore=None):
text = self.element.ownerDocument.createTextNode(data)
if insertBefore:
self.element.insertBefore(text, insertBefore.element)
else:
self.element.appendChild(text)
def insertBefore(self, node, refNode):
self.element.insertBefore(node.element, refNode.element)
node.parent = self
def removeChild(self, node):
if node.element.parentNode == self.element:
self.element.removeChild(node.element)
node.parent = None
def reparentChildren(self, newParent):
while self.element.hasChildNodes():
child = self.element.firstChild
self.element.removeChild(child)
newParent.element.appendChild(child)
self.childNodes = []
def getAttributes(self):
return AttrList(self.element)
def setAttributes(self, attributes):
if attributes:
for name, value in list(attributes.items()):
if isinstance(name, tuple):
if name[0] is not None:
qualifiedName = (name[0] + ":" + name[1])
else:
qualifiedName = name[1]
self.element.setAttributeNS(name[2], qualifiedName,
value)
else:
self.element.setAttribute(
name, value)
attributes = property(getAttributes, setAttributes)
def cloneNode(self):
return NodeBuilder(self.element.cloneNode(False))
def hasContent(self):
return self.element.hasChildNodes()
def getNameTuple(self):
if self.namespace is None:
return namespaces["html"], self.name
else:
return self.namespace, self.name
nameTuple = property(getNameTuple)
class TreeBuilder(_base.TreeBuilder):
def documentClass(self):
self.dom = Dom.getDOMImplementation().createDocument(None, None, None)
return weakref.proxy(self)
def insertDoctype(self, token):
name = token["name"]
publicId = token["publicId"]
systemId = token["systemId"]
domimpl = Dom.getDOMImplementation()
doctype = domimpl.createDocumentType(name, publicId, systemId)
self.document.appendChild(NodeBuilder(doctype))
if Dom == minidom:
doctype.ownerDocument = self.dom
def elementClass(self, name, namespace=None):
if namespace is None and self.defaultNamespace is None:
node = self.dom.createElement(name)
else:
node = self.dom.createElementNS(namespace, name)
return NodeBuilder(node)
def commentClass(self, data):
return NodeBuilder(self.dom.createComment(data))
def fragmentClass(self):
return NodeBuilder(self.dom.createDocumentFragment())
def appendChild(self, node):
self.dom.appendChild(node.element)
def testSerializer(self, element):
return testSerializer(element)
def getDocument(self):
return self.dom
def getFragment(self):
return _base.TreeBuilder.getFragment(self).element
def insertText(self, data, parent=None):
data = data
if parent != self:
_base.TreeBuilder.insertText(self, data, parent)
else:
# HACK: allow text nodes as children of the document node
if hasattr(self.dom, '_child_node_types'):
if not Node.TEXT_NODE in self.dom._child_node_types:
self.dom._child_node_types = list(self.dom._child_node_types)
self.dom._child_node_types.append(Node.TEXT_NODE)
self.dom.appendChild(self.dom.createTextNode(data))
implementation = DomImplementation
name = None
def testSerializer(element):
element.normalize()
rv = []
def serializeElement(element, indent=0):
if element.nodeType == Node.DOCUMENT_TYPE_NODE:
if element.name:
if element.publicId or element.systemId:
publicId = element.publicId or ""
systemId = element.systemId or ""
rv.append("""|%s<!DOCTYPE %s "%s" "%s">""" %
(' ' * indent, element.name, publicId, systemId))
else:
rv.append("|%s<!DOCTYPE %s>" % (' ' * indent, element.name))
else:
rv.append("|%s<!DOCTYPE >" % (' ' * indent,))
elif element.nodeType == Node.DOCUMENT_NODE:
rv.append("#document")
elif element.nodeType == Node.DOCUMENT_FRAGMENT_NODE:
rv.append("#document-fragment")
elif element.nodeType == Node.COMMENT_NODE:
rv.append("|%s<!-- %s -->" % (' ' * indent, element.nodeValue))
elif element.nodeType == Node.TEXT_NODE:
rv.append("|%s\"%s\"" % (' ' * indent, element.nodeValue))
else:
if (hasattr(element, "namespaceURI") and
element.namespaceURI is not None):
name = "%s %s" % (constants.prefixes[element.namespaceURI],
element.nodeName)
else:
name = element.nodeName
rv.append("|%s<%s>" % (' ' * indent, name))
if element.hasAttributes():
attributes = []
for i in range(len(element.attributes)):
attr = element.attributes.item(i)
name = attr.nodeName
value = attr.value
ns = attr.namespaceURI
if ns:
name = "%s %s" % (constants.prefixes[ns], attr.localName)
else:
name = attr.nodeName
attributes.append((name, value))
for name, value in sorted(attributes):
rv.append('|%s%s="%s"' % (' ' * (indent + 2), name, value))
indent += 2
for child in element.childNodes:
serializeElement(child, indent)
serializeElement(element, 0)
return "\n".join(rv)
return locals()
# The actual means to get a module!
getDomModule = moduleFactoryFactory(getDomBuilder)

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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type
import re
from . import _base
from .. import ihatexml
from .. import constants
from ..constants import namespaces
from ..utils import moduleFactoryFactory
tag_regexp = re.compile("{([^}]*)}(.*)")
def getETreeBuilder(ElementTreeImplementation, fullTree=False):
ElementTree = ElementTreeImplementation
ElementTreeCommentType = ElementTree.Comment("asd").tag
class Element(_base.Node):
def __init__(self, name, namespace=None):
self._name = name
self._namespace = namespace
self._element = ElementTree.Element(self._getETreeTag(name,
namespace))
if namespace is None:
self.nameTuple = namespaces["html"], self._name
else:
self.nameTuple = self._namespace, self._name
self.parent = None
self._childNodes = []
self._flags = []
def _getETreeTag(self, name, namespace):
if namespace is None:
etree_tag = name
else:
etree_tag = "{%s}%s" % (namespace, name)
return etree_tag
def _setName(self, name):
self._name = name
self._element.tag = self._getETreeTag(self._name, self._namespace)
def _getName(self):
return self._name
name = property(_getName, _setName)
def _setNamespace(self, namespace):
self._namespace = namespace
self._element.tag = self._getETreeTag(self._name, self._namespace)
def _getNamespace(self):
return self._namespace
namespace = property(_getNamespace, _setNamespace)
def _getAttributes(self):
return self._element.attrib
def _setAttributes(self, attributes):
# Delete existing attributes first
# XXX - there may be a better way to do this...
for key in list(self._element.attrib.keys()):
del self._element.attrib[key]
for key, value in attributes.items():
if isinstance(key, tuple):
name = "{%s}%s" % (key[2], key[1])
else:
name = key
self._element.set(name, value)
attributes = property(_getAttributes, _setAttributes)
def _getChildNodes(self):
return self._childNodes
def _setChildNodes(self, value):
del self._element[:]
self._childNodes = []
for element in value:
self.insertChild(element)
childNodes = property(_getChildNodes, _setChildNodes)
def hasContent(self):
"""Return true if the node has children or text"""
return bool(self._element.text or len(self._element))
def appendChild(self, node):
self._childNodes.append(node)
self._element.append(node._element)
node.parent = self
def insertBefore(self, node, refNode):
index = list(self._element).index(refNode._element)
self._element.insert(index, node._element)
node.parent = self
def removeChild(self, node):
self._element.remove(node._element)
node.parent = None
def insertText(self, data, insertBefore=None):
if not(len(self._element)):
if not self._element.text:
self._element.text = ""
self._element.text += data
elif insertBefore is None:
# Insert the text as the tail of the last child element
if not self._element[-1].tail:
self._element[-1].tail = ""
self._element[-1].tail += data
else:
# Insert the text before the specified node
children = list(self._element)
index = children.index(insertBefore._element)
if index > 0:
if not self._element[index - 1].tail:
self._element[index - 1].tail = ""
self._element[index - 1].tail += data
else:
if not self._element.text:
self._element.text = ""
self._element.text += data
def cloneNode(self):
element = type(self)(self.name, self.namespace)
for name, value in self.attributes.items():
element.attributes[name] = value
return element
def reparentChildren(self, newParent):
if newParent.childNodes:
newParent.childNodes[-1]._element.tail += self._element.text
else:
if not newParent._element.text:
newParent._element.text = ""
if self._element.text is not None:
newParent._element.text += self._element.text
self._element.text = ""
_base.Node.reparentChildren(self, newParent)
class Comment(Element):
def __init__(self, data):
# Use the superclass constructor to set all properties on the
# wrapper element
self._element = ElementTree.Comment(data)
self.parent = None
self._childNodes = []
self._flags = []
def _getData(self):
return self._element.text
def _setData(self, value):
self._element.text = value
data = property(_getData, _setData)
class DocumentType(Element):
def __init__(self, name, publicId, systemId):
Element.__init__(self, "<!DOCTYPE>")
self._element.text = name
self.publicId = publicId
self.systemId = systemId
def _getPublicId(self):
return self._element.get("publicId", "")
def _setPublicId(self, value):
if value is not None:
self._element.set("publicId", value)
publicId = property(_getPublicId, _setPublicId)
def _getSystemId(self):
return self._element.get("systemId", "")
def _setSystemId(self, value):
if value is not None:
self._element.set("systemId", value)
systemId = property(_getSystemId, _setSystemId)
class Document(Element):
def __init__(self):
Element.__init__(self, "DOCUMENT_ROOT")
class DocumentFragment(Element):
def __init__(self):
Element.__init__(self, "DOCUMENT_FRAGMENT")
def testSerializer(element):
rv = []
def serializeElement(element, indent=0):
if not(hasattr(element, "tag")):
element = element.getroot()
if element.tag == "<!DOCTYPE>":
if element.get("publicId") or element.get("systemId"):
publicId = element.get("publicId") or ""
systemId = element.get("systemId") or ""
rv.append("""<!DOCTYPE %s "%s" "%s">""" %
(element.text, publicId, systemId))
else:
rv.append("<!DOCTYPE %s>" % (element.text,))
elif element.tag == "DOCUMENT_ROOT":
rv.append("#document")
if element.text is not None:
rv.append("|%s\"%s\"" % (' ' * (indent + 2), element.text))
if element.tail is not None:
raise TypeError("Document node cannot have tail")
if hasattr(element, "attrib") and len(element.attrib):
raise TypeError("Document node cannot have attributes")
elif element.tag == ElementTreeCommentType:
rv.append("|%s<!-- %s -->" % (' ' * indent, element.text))
else:
assert isinstance(element.tag, text_type), \
"Expected unicode, got %s, %s" % (type(element.tag), element.tag)
nsmatch = tag_regexp.match(element.tag)
if nsmatch is None:
name = element.tag
else:
ns, name = nsmatch.groups()
prefix = constants.prefixes[ns]
name = "%s %s" % (prefix, name)
rv.append("|%s<%s>" % (' ' * indent, name))
if hasattr(element, "attrib"):
attributes = []
for name, value in element.attrib.items():
nsmatch = tag_regexp.match(name)
if nsmatch is not None:
ns, name = nsmatch.groups()
prefix = constants.prefixes[ns]
attr_string = "%s %s" % (prefix, name)
else:
attr_string = name
attributes.append((attr_string, value))
for name, value in sorted(attributes):
rv.append('|%s%s="%s"' % (' ' * (indent + 2), name, value))
if element.text:
rv.append("|%s\"%s\"" % (' ' * (indent + 2), element.text))
indent += 2
for child in element:
serializeElement(child, indent)
if element.tail:
rv.append("|%s\"%s\"" % (' ' * (indent - 2), element.tail))
serializeElement(element, 0)
return "\n".join(rv)
def tostring(element):
"""Serialize an element and its child nodes to a string"""
rv = []
filter = ihatexml.InfosetFilter()
def serializeElement(element):
if isinstance(element, ElementTree.ElementTree):
element = element.getroot()
if element.tag == "<!DOCTYPE>":
if element.get("publicId") or element.get("systemId"):
publicId = element.get("publicId") or ""
systemId = element.get("systemId") or ""
rv.append("""<!DOCTYPE %s PUBLIC "%s" "%s">""" %
(element.text, publicId, systemId))
else:
rv.append("<!DOCTYPE %s>" % (element.text,))
elif element.tag == "DOCUMENT_ROOT":
if element.text is not None:
rv.append(element.text)
if element.tail is not None:
raise TypeError("Document node cannot have tail")
if hasattr(element, "attrib") and len(element.attrib):
raise TypeError("Document node cannot have attributes")
for child in element:
serializeElement(child)
elif element.tag == ElementTreeCommentType:
rv.append("<!--%s-->" % (element.text,))
else:
# This is assumed to be an ordinary element
if not element.attrib:
rv.append("<%s>" % (filter.fromXmlName(element.tag),))
else:
attr = " ".join(["%s=\"%s\"" % (
filter.fromXmlName(name), value)
for name, value in element.attrib.items()])
rv.append("<%s %s>" % (element.tag, attr))
if element.text:
rv.append(element.text)
for child in element:
serializeElement(child)
rv.append("</%s>" % (element.tag,))
if element.tail:
rv.append(element.tail)
serializeElement(element)
return "".join(rv)
class TreeBuilder(_base.TreeBuilder):
documentClass = Document
doctypeClass = DocumentType
elementClass = Element
commentClass = Comment
fragmentClass = DocumentFragment
implementation = ElementTreeImplementation
def testSerializer(self, element):
return testSerializer(element)
def getDocument(self):
if fullTree:
return self.document._element
else:
if self.defaultNamespace is not None:
return self.document._element.find(
"{%s}html" % self.defaultNamespace)
else:
return self.document._element.find("html")
def getFragment(self):
return _base.TreeBuilder.getFragment(self)._element
return locals()
getETreeModule = moduleFactoryFactory(getETreeBuilder)

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"""Module for supporting the lxml.etree library. The idea here is to use as much
of the native library as possible, without using fragile hacks like custom element
names that break between releases. The downside of this is that we cannot represent
all possible trees; specifically the following are known to cause problems:
Text or comments as siblings of the root element
Docypes with no name
When any of these things occur, we emit a DataLossWarning
"""
from __future__ import absolute_import, division, unicode_literals
import warnings
import re
import sys
from . import _base
from ..constants import DataLossWarning
from .. import constants
from . import etree as etree_builders
from .. import ihatexml
import lxml.etree as etree
fullTree = True
tag_regexp = re.compile("{([^}]*)}(.*)")
comment_type = etree.Comment("asd").tag
class DocumentType(object):
def __init__(self, name, publicId, systemId):
self.name = name
self.publicId = publicId
self.systemId = systemId
class Document(object):
def __init__(self):
self._elementTree = None
self._childNodes = []
def appendChild(self, element):
self._elementTree.getroot().addnext(element._element)
def _getChildNodes(self):
return self._childNodes
childNodes = property(_getChildNodes)
def testSerializer(element):
rv = []
finalText = None
infosetFilter = ihatexml.InfosetFilter()
def serializeElement(element, indent=0):
if not hasattr(element, "tag"):
if hasattr(element, "getroot"):
# Full tree case
rv.append("#document")
if element.docinfo.internalDTD:
if not (element.docinfo.public_id or
element.docinfo.system_url):
dtd_str = "<!DOCTYPE %s>" % element.docinfo.root_name
else:
dtd_str = """<!DOCTYPE %s "%s" "%s">""" % (
element.docinfo.root_name,
element.docinfo.public_id,
element.docinfo.system_url)
rv.append("|%s%s" % (' ' * (indent + 2), dtd_str))
next_element = element.getroot()
while next_element.getprevious() is not None:
next_element = next_element.getprevious()
while next_element is not None:
serializeElement(next_element, indent + 2)
next_element = next_element.getnext()
elif isinstance(element, str) or isinstance(element, bytes):
# Text in a fragment
assert isinstance(element, str) or sys.version_info.major == 2
rv.append("|%s\"%s\"" % (' ' * indent, element))
else:
# Fragment case
rv.append("#document-fragment")
for next_element in element:
serializeElement(next_element, indent + 2)
elif element.tag == comment_type:
rv.append("|%s<!-- %s -->" % (' ' * indent, element.text))
if hasattr(element, "tail") and element.tail:
rv.append("|%s\"%s\"" % (' ' * indent, element.tail))
else:
assert isinstance(element, etree._Element)
nsmatch = etree_builders.tag_regexp.match(element.tag)
if nsmatch is not None:
ns = nsmatch.group(1)
tag = nsmatch.group(2)
prefix = constants.prefixes[ns]
rv.append("|%s<%s %s>" % (' ' * indent, prefix,
infosetFilter.fromXmlName(tag)))
else:
rv.append("|%s<%s>" % (' ' * indent,
infosetFilter.fromXmlName(element.tag)))
if hasattr(element, "attrib"):
attributes = []
for name, value in element.attrib.items():
nsmatch = tag_regexp.match(name)
if nsmatch is not None:
ns, name = nsmatch.groups()
name = infosetFilter.fromXmlName(name)
prefix = constants.prefixes[ns]
attr_string = "%s %s" % (prefix, name)
else:
attr_string = infosetFilter.fromXmlName(name)
attributes.append((attr_string, value))
for name, value in sorted(attributes):
rv.append('|%s%s="%s"' % (' ' * (indent + 2), name, value))
if element.text:
rv.append("|%s\"%s\"" % (' ' * (indent + 2), element.text))
indent += 2
for child in element:
serializeElement(child, indent)
if hasattr(element, "tail") and element.tail:
rv.append("|%s\"%s\"" % (' ' * (indent - 2), element.tail))
serializeElement(element, 0)
if finalText is not None:
rv.append("|%s\"%s\"" % (' ' * 2, finalText))
return "\n".join(rv)
def tostring(element):
"""Serialize an element and its child nodes to a string"""
rv = []
finalText = None
def serializeElement(element):
if not hasattr(element, "tag"):
if element.docinfo.internalDTD:
if element.docinfo.doctype:
dtd_str = element.docinfo.doctype
else:
dtd_str = "<!DOCTYPE %s>" % element.docinfo.root_name
rv.append(dtd_str)
serializeElement(element.getroot())
elif element.tag == comment_type:
rv.append("<!--%s-->" % (element.text,))
else:
# This is assumed to be an ordinary element
if not element.attrib:
rv.append("<%s>" % (element.tag,))
else:
attr = " ".join(["%s=\"%s\"" % (name, value)
for name, value in element.attrib.items()])
rv.append("<%s %s>" % (element.tag, attr))
if element.text:
rv.append(element.text)
for child in element:
serializeElement(child)
rv.append("</%s>" % (element.tag,))
if hasattr(element, "tail") and element.tail:
rv.append(element.tail)
serializeElement(element)
if finalText is not None:
rv.append("%s\"" % (' ' * 2, finalText))
return "".join(rv)
class TreeBuilder(_base.TreeBuilder):
documentClass = Document
doctypeClass = DocumentType
elementClass = None
commentClass = None
fragmentClass = Document
implementation = etree
def __init__(self, namespaceHTMLElements, fullTree=False):
builder = etree_builders.getETreeModule(etree, fullTree=fullTree)
infosetFilter = self.infosetFilter = ihatexml.InfosetFilter()
self.namespaceHTMLElements = namespaceHTMLElements
class Attributes(dict):
def __init__(self, element, value={}):
self._element = element
dict.__init__(self, value)
for key, value in self.items():
if isinstance(key, tuple):
name = "{%s}%s" % (key[2], infosetFilter.coerceAttribute(key[1]))
else:
name = infosetFilter.coerceAttribute(key)
self._element._element.attrib[name] = value
def __setitem__(self, key, value):
dict.__setitem__(self, key, value)
if isinstance(key, tuple):
name = "{%s}%s" % (key[2], infosetFilter.coerceAttribute(key[1]))
else:
name = infosetFilter.coerceAttribute(key)
self._element._element.attrib[name] = value
class Element(builder.Element):
def __init__(self, name, namespace):
name = infosetFilter.coerceElement(name)
builder.Element.__init__(self, name, namespace=namespace)
self._attributes = Attributes(self)
def _setName(self, name):
self._name = infosetFilter.coerceElement(name)
self._element.tag = self._getETreeTag(
self._name, self._namespace)
def _getName(self):
return infosetFilter.fromXmlName(self._name)
name = property(_getName, _setName)
def _getAttributes(self):
return self._attributes
def _setAttributes(self, attributes):
self._attributes = Attributes(self, attributes)
attributes = property(_getAttributes, _setAttributes)
def insertText(self, data, insertBefore=None):
data = infosetFilter.coerceCharacters(data)
builder.Element.insertText(self, data, insertBefore)
def appendChild(self, child):
builder.Element.appendChild(self, child)
class Comment(builder.Comment):
def __init__(self, data):
data = infosetFilter.coerceComment(data)
builder.Comment.__init__(self, data)
def _setData(self, data):
data = infosetFilter.coerceComment(data)
self._element.text = data
def _getData(self):
return self._element.text
data = property(_getData, _setData)
self.elementClass = Element
self.commentClass = builder.Comment
# self.fragmentClass = builder.DocumentFragment
_base.TreeBuilder.__init__(self, namespaceHTMLElements)
def reset(self):
_base.TreeBuilder.reset(self)
self.insertComment = self.insertCommentInitial
self.initial_comments = []
self.doctype = None
def testSerializer(self, element):
return testSerializer(element)
def getDocument(self):
if fullTree:
return self.document._elementTree
else:
return self.document._elementTree.getroot()
def getFragment(self):
fragment = []
element = self.openElements[0]._element
if element.text:
fragment.append(element.text)
fragment.extend(list(element))
if element.tail:
fragment.append(element.tail)
return fragment
def insertDoctype(self, token):
name = token["name"]
publicId = token["publicId"]
systemId = token["systemId"]
if not name:
warnings.warn("lxml cannot represent empty doctype", DataLossWarning)
self.doctype = None
else:
coercedName = self.infosetFilter.coerceElement(name)
if coercedName != name:
warnings.warn("lxml cannot represent non-xml doctype", DataLossWarning)
doctype = self.doctypeClass(coercedName, publicId, systemId)
self.doctype = doctype
def insertCommentInitial(self, data, parent=None):
self.initial_comments.append(data)
def insertCommentMain(self, data, parent=None):
if (parent == self.document and
self.document._elementTree.getroot()[-1].tag == comment_type):
warnings.warn("lxml cannot represent adjacent comments beyond the root elements", DataLossWarning)
super(TreeBuilder, self).insertComment(data, parent)
def insertRoot(self, token):
"""Create the document root"""
# Because of the way libxml2 works, it doesn't seem to be possible to
# alter information like the doctype after the tree has been parsed.
# Therefore we need to use the built-in parser to create our iniial
# tree, after which we can add elements like normal
docStr = ""
if self.doctype:
assert self.doctype.name
docStr += "<!DOCTYPE %s" % self.doctype.name
if (self.doctype.publicId is not None or
self.doctype.systemId is not None):
docStr += (' PUBLIC "%s" ' %
(self.infosetFilter.coercePubid(self.doctype.publicId or "")))
if self.doctype.systemId:
sysid = self.doctype.systemId
if sysid.find("'") >= 0 and sysid.find('"') >= 0:
warnings.warn("DOCTYPE system cannot contain single and double quotes", DataLossWarning)
sysid = sysid.replace("'", 'U00027')
if sysid.find("'") >= 0:
docStr += '"%s"' % sysid
else:
docStr += "'%s'" % sysid
else:
docStr += "''"
docStr += ">"
if self.doctype.name != token["name"]:
warnings.warn("lxml cannot represent doctype with a different name to the root element", DataLossWarning)
docStr += "<THIS_SHOULD_NEVER_APPEAR_PUBLICLY/>"
root = etree.fromstring(docStr)
# Append the initial comments:
for comment_token in self.initial_comments:
root.addprevious(etree.Comment(comment_token["data"]))
# Create the root document and add the ElementTree to it
self.document = self.documentClass()
self.document._elementTree = root.getroottree()
# Give the root element the right name
name = token["name"]
namespace = token.get("namespace", self.defaultNamespace)
if namespace is None:
etree_tag = name
else:
etree_tag = "{%s}%s" % (namespace, name)
root.tag = etree_tag
# Add the root element to the internal child/open data structures
root_element = self.elementClass(name, namespace)
root_element._element = root
self.document._childNodes.append(root_element)
self.openElements.append(root_element)
# Reset to the default insert comment function
self.insertComment = self.insertCommentMain

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"""A collection of modules for iterating through different kinds of
tree, generating tokens identical to those produced by the tokenizer
module.
To create a tree walker for a new type of tree, you need to do
implement a tree walker object (called TreeWalker by convention) that
implements a 'serialize' method taking a tree as sole argument and
returning an iterator generating tokens.
"""
from __future__ import absolute_import, division, unicode_literals
import sys
from ..utils import default_etree
treeWalkerCache = {}
def getTreeWalker(treeType, implementation=None, **kwargs):
"""Get a TreeWalker class for various types of tree with built-in support
treeType - the name of the tree type required (case-insensitive). Supported
values are:
"dom" - The xml.dom.minidom DOM implementation
"pulldom" - The xml.dom.pulldom event stream
"etree" - A generic walker for tree implementations exposing an
elementtree-like interface (known to work with
ElementTree, cElementTree and lxml.etree).
"lxml" - Optimized walker for lxml.etree
"genshi" - a Genshi stream
implementation - (Currently applies to the "etree" tree type only). A module
implementing the tree type e.g. xml.etree.ElementTree or
cElementTree."""
treeType = treeType.lower()
if treeType not in treeWalkerCache:
if treeType in ("dom", "pulldom"):
name = "%s.%s" % (__name__, treeType)
__import__(name)
mod = sys.modules[name]
treeWalkerCache[treeType] = mod.TreeWalker
elif treeType == "genshi":
from . import genshistream
treeWalkerCache[treeType] = genshistream.TreeWalker
elif treeType == "lxml":
from . import lxmletree
treeWalkerCache[treeType] = lxmletree.TreeWalker
elif treeType == "etree":
from . import etree
if implementation is None:
implementation = default_etree
# XXX: NEVER cache here, caching is done in the etree submodule
return etree.getETreeModule(implementation, **kwargs).TreeWalker
return treeWalkerCache.get(treeType)

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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type, string_types
import gettext
_ = gettext.gettext
from xml.dom import Node
DOCUMENT = Node.DOCUMENT_NODE
DOCTYPE = Node.DOCUMENT_TYPE_NODE
TEXT = Node.TEXT_NODE
ELEMENT = Node.ELEMENT_NODE
COMMENT = Node.COMMENT_NODE
ENTITY = Node.ENTITY_NODE
UNKNOWN = "<#UNKNOWN#>"
from ..constants import voidElements, spaceCharacters
spaceCharacters = "".join(spaceCharacters)
def to_text(s, blank_if_none=True):
"""Wrapper around six.text_type to convert None to empty string"""
if s is None:
if blank_if_none:
return ""
else:
return None
elif isinstance(s, text_type):
return s
else:
return text_type(s)
def is_text_or_none(string):
"""Wrapper around isinstance(string_types) or is None"""
return string is None or isinstance(string, string_types)
class TreeWalker(object):
def __init__(self, tree):
self.tree = tree
def __iter__(self):
raise NotImplementedError
def error(self, msg):
return {"type": "SerializeError", "data": msg}
def emptyTag(self, namespace, name, attrs, hasChildren=False):
assert namespace is None or isinstance(namespace, string_types), type(namespace)
assert isinstance(name, string_types), type(name)
assert all((namespace is None or isinstance(namespace, string_types)) and
isinstance(name, string_types) and
isinstance(value, string_types)
for (namespace, name), value in attrs.items())
yield {"type": "EmptyTag", "name": to_text(name, False),
"namespace": to_text(namespace),
"data": attrs}
if hasChildren:
yield self.error(_("Void element has children"))
def startTag(self, namespace, name, attrs):
assert namespace is None or isinstance(namespace, string_types), type(namespace)
assert isinstance(name, string_types), type(name)
assert all((namespace is None or isinstance(namespace, string_types)) and
isinstance(name, string_types) and
isinstance(value, string_types)
for (namespace, name), value in attrs.items())
return {"type": "StartTag",
"name": text_type(name),
"namespace": to_text(namespace),
"data": dict(((to_text(namespace, False), to_text(name)),
to_text(value, False))
for (namespace, name), value in attrs.items())}
def endTag(self, namespace, name):
assert namespace is None or isinstance(namespace, string_types), type(namespace)
assert isinstance(name, string_types), type(namespace)
return {"type": "EndTag",
"name": to_text(name, False),
"namespace": to_text(namespace),
"data": {}}
def text(self, data):
assert isinstance(data, string_types), type(data)
data = to_text(data)
middle = data.lstrip(spaceCharacters)
left = data[:len(data) - len(middle)]
if left:
yield {"type": "SpaceCharacters", "data": left}
data = middle
middle = data.rstrip(spaceCharacters)
right = data[len(middle):]
if middle:
yield {"type": "Characters", "data": middle}
if right:
yield {"type": "SpaceCharacters", "data": right}
def comment(self, data):
assert isinstance(data, string_types), type(data)
return {"type": "Comment", "data": text_type(data)}
def doctype(self, name, publicId=None, systemId=None, correct=True):
assert is_text_or_none(name), type(name)
assert is_text_or_none(publicId), type(publicId)
assert is_text_or_none(systemId), type(systemId)
return {"type": "Doctype",
"name": to_text(name),
"publicId": to_text(publicId),
"systemId": to_text(systemId),
"correct": to_text(correct)}
def entity(self, name):
assert isinstance(name, string_types), type(name)
return {"type": "Entity", "name": text_type(name)}
def unknown(self, nodeType):
return self.error(_("Unknown node type: ") + nodeType)
class NonRecursiveTreeWalker(TreeWalker):
def getNodeDetails(self, node):
raise NotImplementedError
def getFirstChild(self, node):
raise NotImplementedError
def getNextSibling(self, node):
raise NotImplementedError
def getParentNode(self, node):
raise NotImplementedError
def __iter__(self):
currentNode = self.tree
while currentNode is not None:
details = self.getNodeDetails(currentNode)
type, details = details[0], details[1:]
hasChildren = False
if type == DOCTYPE:
yield self.doctype(*details)
elif type == TEXT:
for token in self.text(*details):
yield token
elif type == ELEMENT:
namespace, name, attributes, hasChildren = details
if name in voidElements:
for token in self.emptyTag(namespace, name, attributes,
hasChildren):
yield token
hasChildren = False
else:
yield self.startTag(namespace, name, attributes)
elif type == COMMENT:
yield self.comment(details[0])
elif type == ENTITY:
yield self.entity(details[0])
elif type == DOCUMENT:
hasChildren = True
else:
yield self.unknown(details[0])
if hasChildren:
firstChild = self.getFirstChild(currentNode)
else:
firstChild = None
if firstChild is not None:
currentNode = firstChild
else:
while currentNode is not None:
details = self.getNodeDetails(currentNode)
type, details = details[0], details[1:]
if type == ELEMENT:
namespace, name, attributes, hasChildren = details
if name not in voidElements:
yield self.endTag(namespace, name)
if self.tree is currentNode:
currentNode = None
break
nextSibling = self.getNextSibling(currentNode)
if nextSibling is not None:
currentNode = nextSibling
break
else:
currentNode = self.getParentNode(currentNode)

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from __future__ import absolute_import, division, unicode_literals
from xml.dom import Node
import gettext
_ = gettext.gettext
from . import _base
class TreeWalker(_base.NonRecursiveTreeWalker):
def getNodeDetails(self, node):
if node.nodeType == Node.DOCUMENT_TYPE_NODE:
return _base.DOCTYPE, node.name, node.publicId, node.systemId
elif node.nodeType in (Node.TEXT_NODE, Node.CDATA_SECTION_NODE):
return _base.TEXT, node.nodeValue
elif node.nodeType == Node.ELEMENT_NODE:
attrs = {}
for attr in list(node.attributes.keys()):
attr = node.getAttributeNode(attr)
if attr.namespaceURI:
attrs[(attr.namespaceURI, attr.localName)] = attr.value
else:
attrs[(None, attr.name)] = attr.value
return (_base.ELEMENT, node.namespaceURI, node.nodeName,
attrs, node.hasChildNodes())
elif node.nodeType == Node.COMMENT_NODE:
return _base.COMMENT, node.nodeValue
elif node.nodeType in (Node.DOCUMENT_NODE, Node.DOCUMENT_FRAGMENT_NODE):
return (_base.DOCUMENT,)
else:
return _base.UNKNOWN, node.nodeType
def getFirstChild(self, node):
return node.firstChild
def getNextSibling(self, node):
return node.nextSibling
def getParentNode(self, node):
return node.parentNode

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from __future__ import absolute_import, division, unicode_literals
try:
from collections import OrderedDict
except ImportError:
try:
from ordereddict import OrderedDict
except ImportError:
OrderedDict = dict
import gettext
_ = gettext.gettext
import re
from pip._vendor.six import text_type
from . import _base
from ..utils import moduleFactoryFactory
tag_regexp = re.compile("{([^}]*)}(.*)")
def getETreeBuilder(ElementTreeImplementation):
ElementTree = ElementTreeImplementation
ElementTreeCommentType = ElementTree.Comment("asd").tag
class TreeWalker(_base.NonRecursiveTreeWalker):
"""Given the particular ElementTree representation, this implementation,
to avoid using recursion, returns "nodes" as tuples with the following
content:
1. The current element
2. The index of the element relative to its parent
3. A stack of ancestor elements
4. A flag "text", "tail" or None to indicate if the current node is a
text node; either the text or tail of the current element (1)
"""
def getNodeDetails(self, node):
if isinstance(node, tuple): # It might be the root Element
elt, key, parents, flag = node
if flag in ("text", "tail"):
return _base.TEXT, getattr(elt, flag)
else:
node = elt
if not(hasattr(node, "tag")):
node = node.getroot()
if node.tag in ("DOCUMENT_ROOT", "DOCUMENT_FRAGMENT"):
return (_base.DOCUMENT,)
elif node.tag == "<!DOCTYPE>":
return (_base.DOCTYPE, node.text,
node.get("publicId"), node.get("systemId"))
elif node.tag == ElementTreeCommentType:
return _base.COMMENT, node.text
else:
assert type(node.tag) == text_type, type(node.tag)
# This is assumed to be an ordinary element
match = tag_regexp.match(node.tag)
if match:
namespace, tag = match.groups()
else:
namespace = None
tag = node.tag
attrs = OrderedDict()
for name, value in list(node.attrib.items()):
match = tag_regexp.match(name)
if match:
attrs[(match.group(1), match.group(2))] = value
else:
attrs[(None, name)] = value
return (_base.ELEMENT, namespace, tag,
attrs, len(node) or node.text)
def getFirstChild(self, node):
if isinstance(node, tuple):
element, key, parents, flag = node
else:
element, key, parents, flag = node, None, [], None
if flag in ("text", "tail"):
return None
else:
if element.text:
return element, key, parents, "text"
elif len(element):
parents.append(element)
return element[0], 0, parents, None
else:
return None
def getNextSibling(self, node):
if isinstance(node, tuple):
element, key, parents, flag = node
else:
return None
if flag == "text":
if len(element):
parents.append(element)
return element[0], 0, parents, None
else:
return None
else:
if element.tail and flag != "tail":
return element, key, parents, "tail"
elif key < len(parents[-1]) - 1:
return parents[-1][key + 1], key + 1, parents, None
else:
return None
def getParentNode(self, node):
if isinstance(node, tuple):
element, key, parents, flag = node
else:
return None
if flag == "text":
if not parents:
return element
else:
return element, key, parents, None
else:
parent = parents.pop()
if not parents:
return parent
else:
return parent, list(parents[-1]).index(parent), parents, None
return locals()
getETreeModule = moduleFactoryFactory(getETreeBuilder)

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from __future__ import absolute_import, division, unicode_literals
from genshi.core import QName
from genshi.core import START, END, XML_NAMESPACE, DOCTYPE, TEXT
from genshi.core import START_NS, END_NS, START_CDATA, END_CDATA, PI, COMMENT
from . import _base
from ..constants import voidElements, namespaces
class TreeWalker(_base.TreeWalker):
def __iter__(self):
# Buffer the events so we can pass in the following one
previous = None
for event in self.tree:
if previous is not None:
for token in self.tokens(previous, event):
yield token
previous = event
# Don't forget the final event!
if previous is not None:
for token in self.tokens(previous, None):
yield token
def tokens(self, event, next):
kind, data, pos = event
if kind == START:
tag, attribs = data
name = tag.localname
namespace = tag.namespace
converted_attribs = {}
for k, v in attribs:
if isinstance(k, QName):
converted_attribs[(k.namespace, k.localname)] = v
else:
converted_attribs[(None, k)] = v
if namespace == namespaces["html"] and name in voidElements:
for token in self.emptyTag(namespace, name, converted_attribs,
not next or next[0] != END
or next[1] != tag):
yield token
else:
yield self.startTag(namespace, name, converted_attribs)
elif kind == END:
name = data.localname
namespace = data.namespace
if name not in voidElements:
yield self.endTag(namespace, name)
elif kind == COMMENT:
yield self.comment(data)
elif kind == TEXT:
for token in self.text(data):
yield token
elif kind == DOCTYPE:
yield self.doctype(*data)
elif kind in (XML_NAMESPACE, DOCTYPE, START_NS, END_NS,
START_CDATA, END_CDATA, PI):
pass
else:
yield self.unknown(kind)

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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type
from lxml import etree
from ..treebuilders.etree import tag_regexp
from gettext import gettext
_ = gettext
from . import _base
from .. import ihatexml
def ensure_str(s):
if s is None:
return None
elif isinstance(s, text_type):
return s
else:
return s.decode("utf-8", "strict")
class Root(object):
def __init__(self, et):
self.elementtree = et
self.children = []
if et.docinfo.internalDTD:
self.children.append(Doctype(self,
ensure_str(et.docinfo.root_name),
ensure_str(et.docinfo.public_id),
ensure_str(et.docinfo.system_url)))
root = et.getroot()
node = root
while node.getprevious() is not None:
node = node.getprevious()
while node is not None:
self.children.append(node)
node = node.getnext()
self.text = None
self.tail = None
def __getitem__(self, key):
return self.children[key]
def getnext(self):
return None
def __len__(self):
return 1
class Doctype(object):
def __init__(self, root_node, name, public_id, system_id):
self.root_node = root_node
self.name = name
self.public_id = public_id
self.system_id = system_id
self.text = None
self.tail = None
def getnext(self):
return self.root_node.children[1]
class FragmentRoot(Root):
def __init__(self, children):
self.children = [FragmentWrapper(self, child) for child in children]
self.text = self.tail = None
def getnext(self):
return None
class FragmentWrapper(object):
def __init__(self, fragment_root, obj):
self.root_node = fragment_root
self.obj = obj
if hasattr(self.obj, 'text'):
self.text = ensure_str(self.obj.text)
else:
self.text = None
if hasattr(self.obj, 'tail'):
self.tail = ensure_str(self.obj.tail)
else:
self.tail = None
def __getattr__(self, name):
return getattr(self.obj, name)
def getnext(self):
siblings = self.root_node.children
idx = siblings.index(self)
if idx < len(siblings) - 1:
return siblings[idx + 1]
else:
return None
def __getitem__(self, key):
return self.obj[key]
def __bool__(self):
return bool(self.obj)
def getparent(self):
return None
def __str__(self):
return str(self.obj)
def __unicode__(self):
return str(self.obj)
def __len__(self):
return len(self.obj)
class TreeWalker(_base.NonRecursiveTreeWalker):
def __init__(self, tree):
if hasattr(tree, "getroot"):
tree = Root(tree)
elif isinstance(tree, list):
tree = FragmentRoot(tree)
_base.NonRecursiveTreeWalker.__init__(self, tree)
self.filter = ihatexml.InfosetFilter()
def getNodeDetails(self, node):
if isinstance(node, tuple): # Text node
node, key = node
assert key in ("text", "tail"), _("Text nodes are text or tail, found %s") % key
return _base.TEXT, ensure_str(getattr(node, key))
elif isinstance(node, Root):
return (_base.DOCUMENT,)
elif isinstance(node, Doctype):
return _base.DOCTYPE, node.name, node.public_id, node.system_id
elif isinstance(node, FragmentWrapper) and not hasattr(node, "tag"):
return _base.TEXT, node.obj
elif node.tag == etree.Comment:
return _base.COMMENT, ensure_str(node.text)
elif node.tag == etree.Entity:
return _base.ENTITY, ensure_str(node.text)[1:-1] # strip &;
else:
# This is assumed to be an ordinary element
match = tag_regexp.match(ensure_str(node.tag))
if match:
namespace, tag = match.groups()
else:
namespace = None
tag = ensure_str(node.tag)
attrs = {}
for name, value in list(node.attrib.items()):
name = ensure_str(name)
value = ensure_str(value)
match = tag_regexp.match(name)
if match:
attrs[(match.group(1), match.group(2))] = value
else:
attrs[(None, name)] = value
return (_base.ELEMENT, namespace, self.filter.fromXmlName(tag),
attrs, len(node) > 0 or node.text)
def getFirstChild(self, node):
assert not isinstance(node, tuple), _("Text nodes have no children")
assert len(node) or node.text, "Node has no children"
if node.text:
return (node, "text")
else:
return node[0]
def getNextSibling(self, node):
if isinstance(node, tuple): # Text node
node, key = node
assert key in ("text", "tail"), _("Text nodes are text or tail, found %s") % key
if key == "text":
# XXX: we cannot use a "bool(node) and node[0] or None" construct here
# because node[0] might evaluate to False if it has no child element
if len(node):
return node[0]
else:
return None
else: # tail
return node.getnext()
return (node, "tail") if node.tail else node.getnext()
def getParentNode(self, node):
if isinstance(node, tuple): # Text node
node, key = node
assert key in ("text", "tail"), _("Text nodes are text or tail, found %s") % key
if key == "text":
return node
# else: fallback to "normal" processing
return node.getparent()

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from __future__ import absolute_import, division, unicode_literals
from xml.dom.pulldom import START_ELEMENT, END_ELEMENT, \
COMMENT, IGNORABLE_WHITESPACE, CHARACTERS
from . import _base
from ..constants import voidElements
class TreeWalker(_base.TreeWalker):
def __iter__(self):
ignore_until = None
previous = None
for event in self.tree:
if previous is not None and \
(ignore_until is None or previous[1] is ignore_until):
if previous[1] is ignore_until:
ignore_until = None
for token in self.tokens(previous, event):
yield token
if token["type"] == "EmptyTag":
ignore_until = previous[1]
previous = event
if ignore_until is None or previous[1] is ignore_until:
for token in self.tokens(previous, None):
yield token
elif ignore_until is not None:
raise ValueError("Illformed DOM event stream: void element without END_ELEMENT")
def tokens(self, event, next):
type, node = event
if type == START_ELEMENT:
name = node.nodeName
namespace = node.namespaceURI
attrs = {}
for attr in list(node.attributes.keys()):
attr = node.getAttributeNode(attr)
attrs[(attr.namespaceURI, attr.localName)] = attr.value
if name in voidElements:
for token in self.emptyTag(namespace,
name,
attrs,
not next or next[1] is not node):
yield token
else:
yield self.startTag(namespace, name, attrs)
elif type == END_ELEMENT:
name = node.nodeName
namespace = node.namespaceURI
if name not in voidElements:
yield self.endTag(namespace, name)
elif type == COMMENT:
yield self.comment(node.nodeValue)
elif type in (IGNORABLE_WHITESPACE, CHARACTERS):
for token in self.text(node.nodeValue):
yield token
else:
yield self.unknown(type)

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from __future__ import absolute_import, division, unicode_literals
from .py import Trie as PyTrie
Trie = PyTrie
try:
from .datrie import Trie as DATrie
except ImportError:
pass
else:
Trie = DATrie

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from __future__ import absolute_import, division, unicode_literals
from collections import Mapping
class Trie(Mapping):
"""Abstract base class for tries"""
def keys(self, prefix=None):
keys = super().keys()
if prefix is None:
return set(keys)
# Python 2.6: no set comprehensions
return set([x for x in keys if x.startswith(prefix)])
def has_keys_with_prefix(self, prefix):
for key in self.keys():
if key.startswith(prefix):
return True
return False
def longest_prefix(self, prefix):
if prefix in self:
return prefix
for i in range(1, len(prefix) + 1):
if prefix[:-i] in self:
return prefix[:-i]
raise KeyError(prefix)
def longest_prefix_item(self, prefix):
lprefix = self.longest_prefix(prefix)
return (lprefix, self[lprefix])

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from __future__ import absolute_import, division, unicode_literals
from datrie import Trie as DATrie
from pip._vendor.six import text_type
from ._base import Trie as ABCTrie
class Trie(ABCTrie):
def __init__(self, data):
chars = set()
for key in data.keys():
if not isinstance(key, text_type):
raise TypeError("All keys must be strings")
for char in key:
chars.add(char)
self._data = DATrie("".join(chars))
for key, value in data.items():
self._data[key] = value
def __contains__(self, key):
return key in self._data
def __len__(self):
return len(self._data)
def __iter__(self):
raise NotImplementedError()
def __getitem__(self, key):
return self._data[key]
def keys(self, prefix=None):
return self._data.keys(prefix)
def has_keys_with_prefix(self, prefix):
return self._data.has_keys_with_prefix(prefix)
def longest_prefix(self, prefix):
return self._data.longest_prefix(prefix)
def longest_prefix_item(self, prefix):
return self._data.longest_prefix_item(prefix)

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from __future__ import absolute_import, division, unicode_literals
from pip._vendor.six import text_type
from bisect import bisect_left
from ._base import Trie as ABCTrie
class Trie(ABCTrie):
def __init__(self, data):
if not all(isinstance(x, text_type) for x in data.keys()):
raise TypeError("All keys must be strings")
self._data = data
self._keys = sorted(data.keys())
self._cachestr = ""
self._cachepoints = (0, len(data))
def __contains__(self, key):
return key in self._data
def __len__(self):
return len(self._data)
def __iter__(self):
return iter(self._data)
def __getitem__(self, key):
return self._data[key]
def keys(self, prefix=None):
if prefix is None or prefix == "" or not self._keys:
return set(self._keys)
if prefix.startswith(self._cachestr):
lo, hi = self._cachepoints
start = i = bisect_left(self._keys, prefix, lo, hi)
else:
start = i = bisect_left(self._keys, prefix)
keys = set()
if start == len(self._keys):
return keys
while self._keys[i].startswith(prefix):
keys.add(self._keys[i])
i += 1
self._cachestr = prefix
self._cachepoints = (start, i)
return keys
def has_keys_with_prefix(self, prefix):
if prefix in self._data:
return True
if prefix.startswith(self._cachestr):
lo, hi = self._cachepoints
i = bisect_left(self._keys, prefix, lo, hi)
else:
i = bisect_left(self._keys, prefix)
if i == len(self._keys):
return False
return self._keys[i].startswith(prefix)

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from __future__ import absolute_import, division, unicode_literals
from types import ModuleType
try:
import xml.etree.cElementTree as default_etree
except ImportError:
import xml.etree.ElementTree as default_etree
__all__ = ["default_etree", "MethodDispatcher", "isSurrogatePair",
"surrogatePairToCodepoint", "moduleFactoryFactory"]
class MethodDispatcher(dict):
"""Dict with 2 special properties:
On initiation, keys that are lists, sets or tuples are converted to
multiple keys so accessing any one of the items in the original
list-like object returns the matching value
md = MethodDispatcher({("foo", "bar"):"baz"})
md["foo"] == "baz"
A default value which can be set through the default attribute.
"""
def __init__(self, items=()):
# Using _dictEntries instead of directly assigning to self is about
# twice as fast. Please do careful performance testing before changing
# anything here.
_dictEntries = []
for name, value in items:
if type(name) in (list, tuple, frozenset, set):
for item in name:
_dictEntries.append((item, value))
else:
_dictEntries.append((name, value))
dict.__init__(self, _dictEntries)
self.default = None
def __getitem__(self, key):
return dict.get(self, key, self.default)
# Some utility functions to dal with weirdness around UCS2 vs UCS4
# python builds
def isSurrogatePair(data):
return (len(data) == 2 and
ord(data[0]) >= 0xD800 and ord(data[0]) <= 0xDBFF and
ord(data[1]) >= 0xDC00 and ord(data[1]) <= 0xDFFF)
def surrogatePairToCodepoint(data):
char_val = (0x10000 + (ord(data[0]) - 0xD800) * 0x400 +
(ord(data[1]) - 0xDC00))
return char_val
# Module Factory Factory (no, this isn't Java, I know)
# Here to stop this being duplicated all over the place.
def moduleFactoryFactory(factory):
moduleCache = {}
def moduleFactory(baseModule, *args, **kwargs):
if isinstance(ModuleType.__name__, type("")):
name = "_%s_factory" % baseModule.__name__
else:
name = b"_%s_factory" % baseModule.__name__
if name in moduleCache:
return moduleCache[name]
else:
mod = ModuleType(name)
objs = factory(baseModule, *args, **kwargs)
mod.__dict__.update(objs)
moduleCache[name] = mod
return mod
return moduleFactory

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326
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"""
lockfile.py - Platform-independent advisory file locks.
Requires Python 2.5 unless you apply 2.4.diff
Locking is done on a per-thread basis instead of a per-process basis.
Usage:
>>> lock = LockFile('somefile')
>>> try:
... lock.acquire()
... except AlreadyLocked:
... print 'somefile', 'is locked already.'
... except LockFailed:
... print 'somefile', 'can\\'t be locked.'
... else:
... print 'got lock'
got lock
>>> print lock.is_locked()
True
>>> lock.release()
>>> lock = LockFile('somefile')
>>> print lock.is_locked()
False
>>> with lock:
... print lock.is_locked()
True
>>> print lock.is_locked()
False
>>> lock = LockFile('somefile')
>>> # It is okay to lock twice from the same thread...
>>> with lock:
... lock.acquire()
...
>>> # Though no counter is kept, so you can't unlock multiple times...
>>> print lock.is_locked()
False
Exceptions:
Error - base class for other exceptions
LockError - base class for all locking exceptions
AlreadyLocked - Another thread or process already holds the lock
LockFailed - Lock failed for some other reason
UnlockError - base class for all unlocking exceptions
AlreadyUnlocked - File was not locked.
NotMyLock - File was locked but not by the current thread/process
"""
from __future__ import absolute_import
import sys
import socket
import os
import threading
import time
import urllib
import warnings
import functools
# Work with PEP8 and non-PEP8 versions of threading module.
if not hasattr(threading, "current_thread"):
threading.current_thread = threading.currentThread
if not hasattr(threading.Thread, "get_name"):
threading.Thread.get_name = threading.Thread.getName
__all__ = ['Error', 'LockError', 'LockTimeout', 'AlreadyLocked',
'LockFailed', 'UnlockError', 'NotLocked', 'NotMyLock',
'LinkLockFile', 'MkdirLockFile', 'SQLiteLockFile',
'LockBase', 'locked']
class Error(Exception):
"""
Base class for other exceptions.
>>> try:
... raise Error
... except Exception:
... pass
"""
pass
class LockError(Error):
"""
Base class for error arising from attempts to acquire the lock.
>>> try:
... raise LockError
... except Error:
... pass
"""
pass
class LockTimeout(LockError):
"""Raised when lock creation fails within a user-defined period of time.
>>> try:
... raise LockTimeout
... except LockError:
... pass
"""
pass
class AlreadyLocked(LockError):
"""Some other thread/process is locking the file.
>>> try:
... raise AlreadyLocked
... except LockError:
... pass
"""
pass
class LockFailed(LockError):
"""Lock file creation failed for some other reason.
>>> try:
... raise LockFailed
... except LockError:
... pass
"""
pass
class UnlockError(Error):
"""
Base class for errors arising from attempts to release the lock.
>>> try:
... raise UnlockError
... except Error:
... pass
"""
pass
class NotLocked(UnlockError):
"""Raised when an attempt is made to unlock an unlocked file.
>>> try:
... raise NotLocked
... except UnlockError:
... pass
"""
pass
class NotMyLock(UnlockError):
"""Raised when an attempt is made to unlock a file someone else locked.
>>> try:
... raise NotMyLock
... except UnlockError:
... pass
"""
pass
class LockBase:
"""Base class for platform-specific lock classes."""
def __init__(self, path, threaded=True, timeout=None):
"""
>>> lock = LockBase('somefile')
>>> lock = LockBase('somefile', threaded=False)
"""
self.path = path
self.lock_file = os.path.abspath(path) + ".lock"
self.hostname = socket.gethostname()
self.pid = os.getpid()
if threaded:
t = threading.current_thread()
# Thread objects in Python 2.4 and earlier do not have ident
# attrs. Worm around that.
ident = getattr(t, "ident", hash(t))
self.tname = "-%x" % (ident & 0xffffffff)
else:
self.tname = ""
dirname = os.path.dirname(self.lock_file)
# unique name is mostly about the current process, but must
# also contain the path -- otherwise, two adjacent locked
# files conflict (one file gets locked, creating lock-file and
# unique file, the other one gets locked, creating lock-file
# and overwriting the already existing lock-file, then one
# gets unlocked, deleting both lock-file and unique file,
# finally the last lock errors out upon releasing.
self.unique_name = os.path.join(dirname,
"%s%s.%s%s" % (self.hostname,
self.tname,
self.pid,
hash(self.path)))
self.timeout = timeout
def acquire(self, timeout=None):
"""
Acquire the lock.
* If timeout is omitted (or None), wait forever trying to lock the
file.
* If timeout > 0, try to acquire the lock for that many seconds. If
the lock period expires and the file is still locked, raise
LockTimeout.
* If timeout <= 0, raise AlreadyLocked immediately if the file is
already locked.
"""
raise NotImplemented("implement in subclass")
def release(self):
"""
Release the lock.
If the file is not locked, raise NotLocked.
"""
raise NotImplemented("implement in subclass")
def is_locked(self):
"""
Tell whether or not the file is locked.
"""
raise NotImplemented("implement in subclass")
def i_am_locking(self):
"""
Return True if this object is locking the file.
"""
raise NotImplemented("implement in subclass")
def break_lock(self):
"""
Remove a lock. Useful if a locking thread failed to unlock.
"""
raise NotImplemented("implement in subclass")
def __enter__(self):
"""
Context manager support.
"""
self.acquire()
return self
def __exit__(self, *_exc):
"""
Context manager support.
"""
self.release()
def __repr__(self):
return "<%s: %r -- %r>" % (self.__class__.__name__, self.unique_name,
self.path)
def _fl_helper(cls, mod, *args, **kwds):
warnings.warn("Import from %s module instead of lockfile package" % mod,
DeprecationWarning, stacklevel=2)
# This is a bit funky, but it's only for awhile. The way the unit tests
# are constructed this function winds up as an unbound method, so it
# actually takes three args, not two. We want to toss out self.
if not isinstance(args[0], str):
# We are testing, avoid the first arg
args = args[1:]
if len(args) == 1 and not kwds:
kwds["threaded"] = True
return cls(*args, **kwds)
def LinkFileLock(*args, **kwds):
"""Factory function provided for backwards compatibility.
Do not use in new code. Instead, import LinkLockFile from the
lockfile.linklockfile module.
"""
from . import linklockfile
return _fl_helper(linklockfile.LinkLockFile, "lockfile.linklockfile",
*args, **kwds)
def MkdirFileLock(*args, **kwds):
"""Factory function provided for backwards compatibility.
Do not use in new code. Instead, import MkdirLockFile from the
lockfile.mkdirlockfile module.
"""
from . import mkdirlockfile
return _fl_helper(mkdirlockfile.MkdirLockFile, "lockfile.mkdirlockfile",
*args, **kwds)
def SQLiteFileLock(*args, **kwds):
"""Factory function provided for backwards compatibility.
Do not use in new code. Instead, import SQLiteLockFile from the
lockfile.mkdirlockfile module.
"""
from . import sqlitelockfile
return _fl_helper(sqlitelockfile.SQLiteLockFile, "lockfile.sqlitelockfile",
*args, **kwds)
def locked(path, timeout=None):
"""Decorator which enables locks for decorated function.
Arguments:
- path: path for lockfile.
- timeout (optional): Timeout for acquiring lock.
Usage:
@locked('/var/run/myname', timeout=0)
def myname(...):
...
"""
def decor(func):
@functools.wraps(func)
def wrapper(*args, **kwargs):
lock = FileLock(path, timeout=timeout)
lock.acquire()
try:
return func(*args, **kwargs)
finally:
lock.release()
return wrapper
return decor
if hasattr(os, "link"):
from . import linklockfile as _llf
LockFile = _llf.LinkLockFile
else:
from . import mkdirlockfile as _mlf
LockFile = _mlf.MkdirLockFile
FileLock = LockFile

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from __future__ import absolute_import
import time
import os
from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout,
AlreadyLocked)
class LinkLockFile(LockBase):
"""Lock access to a file using atomic property of link(2).
>>> lock = LinkLockFile('somefile')
>>> lock = LinkLockFile('somefile', threaded=False)
"""
def acquire(self, timeout=None):
try:
open(self.unique_name, "wb").close()
except IOError:
raise LockFailed("failed to create %s" % self.unique_name)
timeout = timeout is not None and timeout or self.timeout
end_time = time.time()
if timeout is not None and timeout > 0:
end_time += timeout
while True:
# Try and create a hard link to it.
try:
os.link(self.unique_name, self.lock_file)
except OSError:
# Link creation failed. Maybe we've double-locked?
nlinks = os.stat(self.unique_name).st_nlink
if nlinks == 2:
# The original link plus the one I created == 2. We're
# good to go.
return
else:
# Otherwise the lock creation failed.
if timeout is not None and time.time() > end_time:
os.unlink(self.unique_name)
if timeout > 0:
raise LockTimeout("Timeout waiting to acquire"
" lock for %s" %
self.path)
else:
raise AlreadyLocked("%s is already locked" %
self.path)
time.sleep(timeout is not None and timeout/10 or 0.1)
else:
# Link creation succeeded. We're good to go.
return
def release(self):
if not self.is_locked():
raise NotLocked("%s is not locked" % self.path)
elif not os.path.exists(self.unique_name):
raise NotMyLock("%s is locked, but not by me" % self.path)
os.unlink(self.unique_name)
os.unlink(self.lock_file)
def is_locked(self):
return os.path.exists(self.lock_file)
def i_am_locking(self):
return (self.is_locked() and
os.path.exists(self.unique_name) and
os.stat(self.unique_name).st_nlink == 2)
def break_lock(self):
if os.path.exists(self.lock_file):
os.unlink(self.lock_file)

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from __future__ import absolute_import, division
import time
import os
import sys
import errno
from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout,
AlreadyLocked)
class MkdirLockFile(LockBase):
"""Lock file by creating a directory."""
def __init__(self, path, threaded=True, timeout=None):
"""
>>> lock = MkdirLockFile('somefile')
>>> lock = MkdirLockFile('somefile', threaded=False)
"""
LockBase.__init__(self, path, threaded, timeout)
# Lock file itself is a directory. Place the unique file name into
# it.
self.unique_name = os.path.join(self.lock_file,
"%s.%s%s" % (self.hostname,
self.tname,
self.pid))
def acquire(self, timeout=None):
timeout = timeout is not None and timeout or self.timeout
end_time = time.time()
if timeout is not None and timeout > 0:
end_time += timeout
if timeout is None:
wait = 0.1
else:
wait = max(0, timeout / 10)
while True:
try:
os.mkdir(self.lock_file)
except OSError:
err = sys.exc_info()[1]
if err.errno == errno.EEXIST:
# Already locked.
if os.path.exists(self.unique_name):
# Already locked by me.
return
if timeout is not None and time.time() > end_time:
if timeout > 0:
raise LockTimeout("Timeout waiting to acquire"
" lock for %s" %
self.path)
else:
# Someone else has the lock.
raise AlreadyLocked("%s is already locked" %
self.path)
time.sleep(wait)
else:
# Couldn't create the lock for some other reason
raise LockFailed("failed to create %s" % self.lock_file)
else:
open(self.unique_name, "wb").close()
return
def release(self):
if not self.is_locked():
raise NotLocked("%s is not locked" % self.path)
elif not os.path.exists(self.unique_name):
raise NotMyLock("%s is locked, but not by me" % self.path)
os.unlink(self.unique_name)
os.rmdir(self.lock_file)
def is_locked(self):
return os.path.exists(self.lock_file)
def i_am_locking(self):
return (self.is_locked() and
os.path.exists(self.unique_name))
def break_lock(self):
if os.path.exists(self.lock_file):
for name in os.listdir(self.lock_file):
os.unlink(os.path.join(self.lock_file, name))
os.rmdir(self.lock_file)

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# -*- coding: utf-8 -*-
# pidlockfile.py
#
# Copyright © 2008–2009 Ben Finney <ben+python@benfinney.id.au>
#
# This is free software: you may copy, modify, and/or distribute this work
# under the terms of the Python Software Foundation License, version 2 or
# later as published by the Python Software Foundation.
# No warranty expressed or implied. See the file LICENSE.PSF-2 for details.
""" Lockfile behaviour implemented via Unix PID files.
"""
from __future__ import absolute_import
import os
import sys
import errno
import time
from . import (LockBase, AlreadyLocked, LockFailed, NotLocked, NotMyLock,
LockTimeout)
class PIDLockFile(LockBase):
""" Lockfile implemented as a Unix PID file.
The lock file is a normal file named by the attribute `path`.
A lock's PID file contains a single line of text, containing
the process ID (PID) of the process that acquired the lock.
>>> lock = PIDLockFile('somefile')
>>> lock = PIDLockFile('somefile')
"""
def __init__(self, path, threaded=False, timeout=None):
# pid lockfiles don't support threaded operation, so always force
# False as the threaded arg.
LockBase.__init__(self, path, False, timeout)
dirname = os.path.dirname(self.lock_file)
basename = os.path.split(self.path)[-1]
self.unique_name = self.path
def read_pid(self):
""" Get the PID from the lock file.
"""
return read_pid_from_pidfile(self.path)
def is_locked(self):
""" Test if the lock is currently held.
The lock is held if the PID file for this lock exists.
"""
return os.path.exists(self.path)
def i_am_locking(self):
""" Test if the lock is held by the current process.
Returns ``True`` if the current process ID matches the
number stored in the PID file.
"""
return self.is_locked() and os.getpid() == self.read_pid()
def acquire(self, timeout=None):
""" Acquire the lock.
Creates the PID file for this lock, or raises an error if
the lock could not be acquired.
"""
timeout = timeout is not None and timeout or self.timeout
end_time = time.time()
if timeout is not None and timeout > 0:
end_time += timeout
while True:
try:
write_pid_to_pidfile(self.path)
except OSError as exc:
if exc.errno == errno.EEXIST:
# The lock creation failed. Maybe sleep a bit.
if timeout is not None and time.time() > end_time:
if timeout > 0:
raise LockTimeout("Timeout waiting to acquire"
" lock for %s" %
self.path)
else:
raise AlreadyLocked("%s is already locked" %
self.path)
time.sleep(timeout is not None and timeout/10 or 0.1)
else:
raise LockFailed("failed to create %s" % self.path)
else:
return
def release(self):
""" Release the lock.
Removes the PID file to release the lock, or raises an
error if the current process does not hold the lock.
"""
if not self.is_locked():
raise NotLocked("%s is not locked" % self.path)
if not self.i_am_locking():
raise NotMyLock("%s is locked, but not by me" % self.path)
remove_existing_pidfile(self.path)
def break_lock(self):
""" Break an existing lock.
Removes the PID file if it already exists, otherwise does
nothing.
"""
remove_existing_pidfile(self.path)
def read_pid_from_pidfile(pidfile_path):
""" Read the PID recorded in the named PID file.
Read and return the numeric PID recorded as text in the named
PID file. If the PID file cannot be read, or if the content is
not a valid PID, return ``None``.
"""
pid = None
try:
pidfile = open(pidfile_path, 'r')
except IOError:
pass
else:
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character.
#
# Programs that read PID files should be somewhat flexible
# in what they accept; i.e., they should ignore extra
# whitespace, leading zeroes, absence of the trailing
# newline, or additional lines in the PID file.
line = pidfile.readline().strip()
try:
pid = int(line)
except ValueError:
pass
pidfile.close()
return pid
def write_pid_to_pidfile(pidfile_path):
""" Write the PID in the named PID file.
Get the numeric process ID (“PID”) of the current process
and write it to the named file as a line of text.
"""
open_flags = (os.O_CREAT | os.O_EXCL | os.O_WRONLY)
open_mode = 0o644
pidfile_fd = os.open(pidfile_path, open_flags, open_mode)
pidfile = os.fdopen(pidfile_fd, 'w')
# According to the FHS 2.3 section on PID files in /var/run:
#
# The file must consist of the process identifier in
# ASCII-encoded decimal, followed by a newline character. For
# example, if crond was process number 25, /var/run/crond.pid
# would contain three characters: two, five, and newline.
pid = os.getpid()
line = "%(pid)d\n" % vars()
pidfile.write(line)
pidfile.close()
def remove_existing_pidfile(pidfile_path):
""" Remove the named PID file if it exists.
Removing a PID file that doesn't already exist puts us in the
desired state, so we ignore the condition if the file does not
exist.
"""
try:
os.remove(pidfile_path)
except OSError as exc:
if exc.errno == errno.ENOENT:
pass
else:
raise

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from __future__ import absolute_import, division
import time
import os
try:
unicode
except NameError:
unicode = str
from . import LockBase, NotLocked, NotMyLock, LockTimeout, AlreadyLocked
class SQLiteLockFile(LockBase):
"Demonstrate SQL-based locking."
testdb = None
def __init__(self, path, threaded=True, timeout=None):
"""
>>> lock = SQLiteLockFile('somefile')
>>> lock = SQLiteLockFile('somefile', threaded=False)
"""
LockBase.__init__(self, path, threaded, timeout)
self.lock_file = unicode(self.lock_file)
self.unique_name = unicode(self.unique_name)
if SQLiteLockFile.testdb is None:
import tempfile
_fd, testdb = tempfile.mkstemp()
os.close(_fd)
os.unlink(testdb)
del _fd, tempfile
SQLiteLockFile.testdb = testdb
import sqlite3
self.connection = sqlite3.connect(SQLiteLockFile.testdb)
c = self.connection.cursor()
try:
c.execute("create table locks"
"("
" lock_file varchar(32),"
" unique_name varchar(32)"
")")
except sqlite3.OperationalError:
pass
else:
self.connection.commit()
import atexit
atexit.register(os.unlink, SQLiteLockFile.testdb)
def acquire(self, timeout=None):
timeout = timeout is not None and timeout or self.timeout
end_time = time.time()
if timeout is not None and timeout > 0:
end_time += timeout
if timeout is None:
wait = 0.1
elif timeout <= 0:
wait = 0
else:
wait = timeout / 10
cursor = self.connection.cursor()
while True:
if not self.is_locked():
# Not locked. Try to lock it.
cursor.execute("insert into locks"
" (lock_file, unique_name)"
" values"
" (?, ?)",
(self.lock_file, self.unique_name))
self.connection.commit()
# Check to see if we are the only lock holder.
cursor.execute("select * from locks"
" where unique_name = ?",
(self.unique_name,))
rows = cursor.fetchall()
if len(rows) > 1:
# Nope. Someone else got there. Remove our lock.
cursor.execute("delete from locks"
" where unique_name = ?",
(self.unique_name,))
self.connection.commit()
else:
# Yup. We're done, so go home.
return
else:
# Check to see if we are the only lock holder.
cursor.execute("select * from locks"
" where unique_name = ?",
(self.unique_name,))
rows = cursor.fetchall()
if len(rows) == 1:
# We're the locker, so go home.
return
# Maybe we should wait a bit longer.
if timeout is not None and time.time() > end_time:
if timeout > 0:
# No more waiting.
raise LockTimeout("Timeout waiting to acquire"
" lock for %s" %
self.path)
else:
# Someone else has the lock and we are impatient..
raise AlreadyLocked("%s is already locked" % self.path)
# Well, okay. We'll give it a bit longer.
time.sleep(wait)
def release(self):
if not self.is_locked():
raise NotLocked("%s is not locked" % self.path)
if not self.i_am_locking():
raise NotMyLock("%s is locked, but not by me (by %s)" %
(self.unique_name, self._who_is_locking()))
cursor = self.connection.cursor()
cursor.execute("delete from locks"
" where unique_name = ?",
(self.unique_name,))
self.connection.commit()
def _who_is_locking(self):
cursor = self.connection.cursor()
cursor.execute("select unique_name from locks"
" where lock_file = ?",
(self.lock_file,))
return cursor.fetchone()[0]
def is_locked(self):
cursor = self.connection.cursor()
cursor.execute("select * from locks"
" where lock_file = ?",
(self.lock_file,))
rows = cursor.fetchall()
return not not rows
def i_am_locking(self):
cursor = self.connection.cursor()
cursor.execute("select * from locks"
" where lock_file = ?"
" and unique_name = ?",
(self.lock_file, self.unique_name))
return not not cursor.fetchall()
def break_lock(self):
cursor = self.connection.cursor()
cursor.execute("delete from locks"
" where lock_file = ?",
(self.lock_file,))
self.connection.commit()

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from __future__ import absolute_import
import time
import os
from . import (LockBase, LockFailed, NotLocked, NotMyLock, LockTimeout,
AlreadyLocked)
class SymlinkLockFile(LockBase):
"""Lock access to a file using symlink(2)."""
def __init__(self, path, threaded=True, timeout=None):
# super(SymlinkLockFile).__init(...)
LockBase.__init__(self, path, threaded, timeout)
# split it back!
self.unique_name = os.path.split(self.unique_name)[1]
def acquire(self, timeout=None):
# Hopefully unnecessary for symlink.
#try:
# open(self.unique_name, "wb").close()
#except IOError:
# raise LockFailed("failed to create %s" % self.unique_name)
timeout = timeout is not None and timeout or self.timeout
end_time = time.time()
if timeout is not None and timeout > 0:
end_time += timeout
while True:
# Try and create a symbolic link to it.
try:
os.symlink(self.unique_name, self.lock_file)
except OSError:
# Link creation failed. Maybe we've double-locked?
if self.i_am_locking():
# Linked to out unique name. Proceed.
return
else:
# Otherwise the lock creation failed.
if timeout is not None and time.time() > end_time:
if timeout > 0:
raise LockTimeout("Timeout waiting to acquire"
" lock for %s" %
self.path)
else:
raise AlreadyLocked("%s is already locked" %
self.path)
time.sleep(timeout/10 if timeout is not None else 0.1)
else:
# Link creation succeeded. We're good to go.
return
def release(self):
if not self.is_locked():
raise NotLocked("%s is not locked" % self.path)
elif not self.i_am_locking():
raise NotMyLock("%s is locked, but not by me" % self.path)
os.unlink(self.lock_file)
def is_locked(self):
return os.path.islink(self.lock_file)
def i_am_locking(self):
return os.path.islink(self.lock_file) and \
os.readlink(self.lock_file) == self.unique_name
def break_lock(self):
if os.path.islink(self.lock_file): # exists && link
os.unlink(self.lock_file)

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# Copyright 2014 Donald Stufft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
__all__ = [
"__title__", "__summary__", "__uri__", "__version__", "__author__",
"__email__", "__license__", "__copyright__",
]
__title__ = "packaging"
__summary__ = "Core utilities for Python packages"
__uri__ = "https://github.com/pypa/packaging"
__version__ = "15.0"
__author__ = "Donald Stufft"
__email__ = "donald@stufft.io"
__license__ = "Apache License, Version 2.0"
__copyright__ = "Copyright 2014 %s" % __author__

24
panda/python/Lib/site-packages/pip/_vendor/packaging/__init__.py Normal file
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# Copyright 2014 Donald Stufft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
from .__about__ import (
__author__, __copyright__, __email__, __license__, __summary__, __title__,
__uri__, __version__
)
__all__ = [
"__title__", "__summary__", "__uri__", "__version__", "__author__",
"__email__", "__license__", "__copyright__",
]

40
panda/python/Lib/site-packages/pip/_vendor/packaging/_compat.py Normal file
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# Copyright 2014 Donald Stufft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
import sys
PY2 = sys.version_info[0] == 2
PY3 = sys.version_info[0] == 3
# flake8: noqa
if PY3:
string_types = str,
else:
string_types = basestring,
def with_metaclass(meta, *bases):
"""
Create a base class with a metaclass.
"""
# This requires a bit of explanation: the basic idea is to make a dummy
# metaclass for one level of class instantiation that replaces itself with
# the actual metaclass.
class metaclass(meta):
def __new__(cls, name, this_bases, d):
return meta(name, bases, d)
return type.__new__(metaclass, 'temporary_class', (), {})

78
panda/python/Lib/site-packages/pip/_vendor/packaging/_structures.py Normal file
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# Copyright 2014 Donald Stufft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
class Infinity(object):
def __repr__(self):
return "Infinity"
def __hash__(self):
return hash(repr(self))
def __lt__(self, other):
return False
def __le__(self, other):
return False
def __eq__(self, other):
return isinstance(other, self.__class__)
def __ne__(self, other):
return not isinstance(other, self.__class__)
def __gt__(self, other):
return True
def __ge__(self, other):
return True
def __neg__(self):
return NegativeInfinity
Infinity = Infinity()
class NegativeInfinity(object):
def __repr__(self):
return "-Infinity"
def __hash__(self):
return hash(repr(self))
def __lt__(self, other):
return True
def __le__(self, other):
return True
def __eq__(self, other):
return isinstance(other, self.__class__)
def __ne__(self, other):
return not isinstance(other, self.__class__)
def __gt__(self, other):
return False
def __ge__(self, other):
return False
def __neg__(self):
return Infinity
NegativeInfinity = NegativeInfinity()

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panda/python/Lib/site-packages/pip/_vendor/packaging/specifiers.py Normal file
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# Copyright 2014 Donald Stufft
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from __future__ import absolute_import, division, print_function
import abc
import functools
import itertools
import re
from ._compat import string_types, with_metaclass
from .version import Version, LegacyVersion, parse
class InvalidSpecifier(ValueError):
"""
An invalid specifier was found, users should refer to PEP 440.
"""
class BaseSpecifier(with_metaclass(abc.ABCMeta, object)):
@abc.abstractmethod
def __str__(self):
"""
Returns the str representation of this Specifier like object. This
should be representative of the Specifier itself.
"""
@abc.abstractmethod
def __hash__(self):
"""
Returns a hash value for this Specifier like object.
"""
@abc.abstractmethod
def __eq__(self, other):
"""
Returns a boolean representing whether or not the two Specifier like
objects are equal.
"""
@abc.abstractmethod
def __ne__(self, other):
"""
Returns a boolean representing whether or not the two Specifier like
objects are not equal.
"""
@abc.abstractproperty
def prereleases(self):
"""
Returns whether or not pre-releases as a whole are allowed by this
specifier.
"""
@prereleases.setter
def prereleases(self, value):
"""
Sets whether or not pre-releases as a whole are allowed by this
specifier.
"""
@abc.abstractmethod
def contains(self, item, prereleases=None):
"""
Determines if the given item is contained within this specifier.
"""
@abc.abstractmethod
def filter(self, iterable, prereleases=None):
"""
Takes an iterable of items and filters them so that only items which
are contained within this specifier are allowed in it.
"""
class _IndividualSpecifier(BaseSpecifier):
_operators = {}
def __init__(self, spec="", prereleases=None):
match = self._regex.search(spec)
if not match:
raise InvalidSpecifier("Invalid specifier: '{0}'".format(spec))
self._spec = (
match.group("operator").strip(),
match.group("version").strip(),
)
# Store whether or not this Specifier should accept prereleases
self._prereleases = prereleases
def __repr__(self):
pre = (
", prereleases={0!r}".format(self.prereleases)
if self._prereleases is not None
else ""
)
return "<{0}({1!r}{2})>".format(
self.__class__.__name__,
str(self),
pre,
)
def __str__(self):
return "{0}{1}".format(*self._spec)
def __hash__(self):
return hash(self._spec)
def __eq__(self, other):
if isinstance(other, string_types):
try:
other = self.__class__(other)
except InvalidSpecifier:
return NotImplemented
elif not isinstance(other, self.__class__):
return NotImplemented
return self._spec == other._spec
def __ne__(self, other):
if isinstance(other, string_types):
try:
other = self.__class__(other)
except InvalidSpecifier:
return NotImplemented
elif not isinstance(other, self.__class__):
return NotImplemented
return self._spec != other._spec
def _get_operator(self, op):
return getattr(self, "_compare_{0}".format(self._operators[op]))
def _coerce_version(self, version):
if not isinstance(version, (LegacyVersion, Version)):
version = parse(version)
return version
@property
def prereleases(self):
return self._prereleases
@prereleases.setter
def prereleases(self, value):
self._prereleases = value
def contains(self, item, prereleases=None):
# Determine if prereleases are to be allowed or not.
if prereleases is None:
prereleases = self.prereleases
# Normalize item to a Version or LegacyVersion, this allows us to have
# a shortcut for ``"2.0" in Specifier(">=2")
item = self._coerce_version(item)
# Determine if we should be supporting prereleases in this specifier
# or not, if we do not support prereleases than we can short circuit
# logic if this version is a prereleases.
if item.is_prerelease and not prereleases:
return False
# Actually do the comparison to determine if this item is contained
# within this Specifier or not.
return self._get_operator(self._spec[0])(item, self._spec[1])
def filter(self, iterable, prereleases=None):
yielded = False
found_prereleases = []
kw = {"prereleases": prereleases if prereleases is not None else True}
# Attempt to iterate over all the values in the iterable and if any of
# them match, yield them.
for version in iterable:
parsed_version = self._coerce_version(version)
if self.contains(parsed_version, **kw):
# If our version is a prerelease, and we were not set to allow
# prereleases, then we'll store it for later incase nothing
# else matches this specifier.
if (parsed_version.is_prerelease
and not (prereleases or self.prereleases)):
found_prereleases.append(version)
# Either this is not a prerelease, or we should have been
# accepting prereleases from the begining.
else:
yielded = True
yield version
# Now that we've iterated over everything, determine if we've yielded
# any values, and if we have not and we have any prereleases stored up
# then we will go ahead and yield the prereleases.
if not yielded and found_prereleases:
for version in found_prereleases:
yield version
class LegacySpecifier(_IndividualSpecifier):
_regex = re.compile(
r"""
^
\s*
(?P<operator>(==|!=|<=|>=|<|>))
\s*
(?P<version>
[^\s]* # We just match everything, except for whitespace since this
# is a "legacy" specifier and the version string can be just
# about anything.
)
\s*
$
""",
re.VERBOSE | re.IGNORECASE,
)
_operators = {
"==": "equal",
"!=": "not_equal",
"<=": "less_than_equal",
">=": "greater_than_equal",
"<": "less_than",
">": "greater_than",
}
def _coerce_version(self, version):
if not isinstance(version, LegacyVersion):
version = LegacyVersion(str(version))
return version
def _compare_equal(self, prospective, spec):
return prospective == self._coerce_version(spec)
def _compare_not_equal(self, prospective, spec):
return prospective != self._coerce_version(spec)
def _compare_less_than_equal(self, prospective, spec):
return prospective <= self._coerce_version(spec)
def _compare_greater_than_equal(self, prospective, spec):
return prospective >= self._coerce_version(spec)
def _compare_less_than(self, prospective, spec):
return prospective < self._coerce_version(spec)
def _compare_greater_than(self, prospective, spec):
return prospective > self._coerce_version(spec)
def _require_version_compare(fn):
@functools.wraps(fn)
def wrapped(self, prospective, spec):
if not isinstance(prospective, Version):
return False
return fn(self, prospective, spec)
return wrapped
class Specifier(_IndividualSpecifier):
_regex = re.compile(
r"""
^
\s*
(?P<operator>(~=|==|!=|<=|>=|<|>|===))
(?P<version>
(?:
# The identity operators allow for an escape hatch that will
# do an exact string match of the version you wish to install.
# This will not be parsed by PEP 440 and we cannot determine
# any semantic meaning from it. This operator is discouraged
# but included entirely as an escape hatch.
(?<====) # Only match for the identity operator
\s*
[^\s]* # We just match everything, except for whitespace
# since we are only testing for strict identity.
)
|
(?:
# The (non)equality operators allow for wild card and local
# versions to be specified so we have to define these two
# operators separately to enable that.
(?<===|!=) # Only match for equals and not equals
\s*
v?
(?:[0-9]+!)? # epoch
[0-9]+(?:\.[0-9]+)* # release
(?: # pre release
[-_\.]?
(a|b|c|rc|alpha|beta|pre|preview)
[-_\.]?
[0-9]*
)?
(?: # post release
(?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
)?
# You cannot use a wild card and a dev or local version
# together so group them with a | and make them optional.
(?:
(?:[-_\.]?dev[-_\.]?[0-9]*)? # dev release
(?:\+[a-z0-9]+(?:[-_\.][a-z0-9]+)*)? # local
|
\.\* # Wild card syntax of .*
)?
)
|
(?:
# The compatible operator requires at least two digits in the
# release segment.
(?<=~=) # Only match for the compatible operator
\s*
v?
(?:[0-9]+!)? # epoch
[0-9]+(?:\.[0-9]+)+ # release (We have a + instead of a *)
(?: # pre release
[-_\.]?
(a|b|c|rc|alpha|beta|pre|preview)
[-_\.]?
[0-9]*
)?
(?: # post release
(?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
)?
(?:[-_\.]?dev[-_\.]?[0-9]*)? # dev release
)
|
(?:
# All other operators only allow a sub set of what the
# (non)equality operators do. Specifically they do not allow
# local versions to be specified nor do they allow the prefix
# matching wild cards.
(?<!==|!=|~=) # We have special cases for these
# operators so we want to make sure they
# don't match here.
\s*
v?
(?:[0-9]+!)? # epoch
[0-9]+(?:\.[0-9]+)* # release
(?: # pre release
[-_\.]?
(a|b|c|rc|alpha|beta|pre|preview)
[-_\.]?
[0-9]*
)?
(?: # post release
(?:-[0-9]+)|(?:[-_\.]?(post|rev|r)[-_\.]?[0-9]*)
)?
(?:[-_\.]?dev[-_\.]?[0-9]*)? # dev release
)
)
\s*
$
""",
re.VERBOSE | re.IGNORECASE,
)
_operators = {
"~=": "compatible",
"==": "equal",
"!=": "not_equal",
"<=": "less_than_equal",
">=": "greater_than_equal",
"<": "less_than",
">": "greater_than",
"===": "arbitrary",
}
@_require_version_compare
def _compare_compatible(self, prospective, spec):
# Compatible releases have an equivalent combination of >= and ==. That
# is that ~=2.2 is equivalent to >=2.2,==2.*. This allows us to
# implement this in terms of the other specifiers instead of
# implementing it ourselves. The only thing we need to do is construct
# the other specifiers.
# We want everything but the last item in the version, but we want to
# ignore post and dev releases and we want to treat the pre-release as
# it's own separate segment.
prefix = ".".join(
list(
itertools.takewhile(
lambda x: (not x.startswith("post")
and not x.startswith("dev")),
_version_split(spec),
)
)[:-1]
)
# Add the prefix notation to the end of our string
prefix += ".*"
return (self._get_operator(">=")(prospective, spec)
and self._get_operator("==")(prospective, prefix))
@_require_version_compare
def _compare_equal(self, prospective, spec):
# We need special logic to handle prefix matching
if spec.endswith(".*"):
# Split the spec out by dots, and pretend that there is an implicit
# dot in between a release segment and a pre-release segment.
spec = _version_split(spec[:-2]) # Remove the trailing .*
# Split the prospective version out by dots, and pretend that there
# is an implicit dot in between a release segment and a pre-release
# segment.
prospective = _version_split(str(prospective))
# Shorten the prospective version to be the same length as the spec
# so that we can determine if the specifier is a prefix of the
# prospective version or not.
prospective = prospective[:len(spec)]
# Pad out our two sides with zeros so that they both equal the same
# length.
spec, prospective = _pad_version(spec, prospective)
else:
# Convert our spec string into a Version
spec = Version(spec)
# If the specifier does not have a local segment, then we want to
# act as if the prospective version also does not have a local
# segment.
if not spec.local:
prospective = Version(prospective.public)
return prospective == spec
@_require_version_compare
def _compare_not_equal(self, prospective, spec):
return not self._compare_equal(prospective, spec)
@_require_version_compare
def _compare_less_than_equal(self, prospective, spec):
return prospective <= Version(spec)
@_require_version_compare
def _compare_greater_than_equal(self, prospective, spec):
return prospective >= Version(spec)
@_require_version_compare
def _compare_less_than(self, prospective, spec):
# Convert our spec to a Version instance, since we'll want to work with
# it as a version.
spec = Version(spec)
# Check to see if the prospective version is less than the spec
# version. If it's not we can short circuit and just return False now
# instead of doing extra unneeded work.
if not prospective < spec:
return False
# This special case is here so that, unless the specifier itself
# includes is a pre-release version, that we do not accept pre-release
# versions for the version mentioned in the specifier (e.g. <3.1 should
# not match 3.1.dev0, but should match 3.0.dev0).
if not spec.is_prerelease and prospective.is_prerelease:
if Version(prospective.base_version) == Version(spec.base_version):
return False
# If we've gotten to here, it means that prospective version is both
# less than the spec version *and* it's not a pre-release of the same
# version in the spec.
return True
@_require_version_compare
def _compare_greater_than(self, prospective, spec):
# Convert our spec to a Version instance, since we'll want to work with
# it as a version.
spec = Version(spec)
# Check to see if the prospective version is greater than the spec
# version. If it's not we can short circuit and just return False now
# instead of doing extra unneeded work.
if not prospective > spec:
return False
# This special case is here so that, unless the specifier itself
# includes is a post-release version, that we do not accept
# post-release versions for the version mentioned in the specifier
# (e.g. >3.1 should not match 3.0.post0, but should match 3.2.post0).
if not spec.is_postrelease and prospective.is_postrelease:
if Version(prospective.base_version) == Version(spec.base_version):
return False
# Ensure that we do not allow a local version of the version mentioned
# in the specifier, which is techincally greater than, to match.
if prospective.local is not None:
if Version(prospective.base_version) == Version(spec.base_version):
return False
# If we've gotten to here, it means that prospective version is both
# greater than the spec version *and* it's not a pre-release of the
# same version in the spec.
return True
def _compare_arbitrary(self, prospective, spec):
return str(prospective).lower() == str(spec).lower()
@property
def prereleases(self):
# If there is an explicit prereleases set for this, then we'll just
# blindly use that.
if self._prereleases is not None:
return self._prereleases
# Look at all of our specifiers and determine if they are inclusive
# operators, and if they are if they are including an explicit
# prerelease.
operator, version = self._spec
if operator in ["==", ">=", "<=", "~="]:
# The == specifier can include a trailing .*, if it does we
# want to remove before parsing.
if operator == "==" and version.endswith(".*"):
version = version[:-2]
# Parse the version, and if it is a pre-release than this
# specifier allows pre-releases.
if parse(version).is_prerelease:
return True
return False
@prereleases.setter
def prereleases(self, value):
self._prereleases = value
_prefix_regex = re.compile(r"^([0-9]+)((?:a|b|c|rc)[0-9]+)$")
def _version_split(version):
result = []
for item in version.split("."):
match = _prefix_regex.search(item)
if match:
result.extend(match.groups())
else:
result.append(item)
return result
def _pad_version(left, right):
left_split, right_split = [], []
# Get the release segment of our versions
left_split.append(list(itertools.takewhile(lambda x: x.isdigit(), left)))
right_split.append(list(itertools.takewhile(lambda x: x.isdigit(), right)))
# Get the rest of our versions
left_split.append(left[len(left_split):])
right_split.append(left[len(right_split):])
# Insert our padding
left_split.insert(
1,
["0"] * max(0, len(right_split[0]) - len(left_split[0])),
)
right_split.insert(
1,
["0"] * max(0, len(left_split[0]) - len(right_split[0])),
)
return (
list(itertools.chain(*left_split)),
list(itertools.chain(*right_split)),
)
class SpecifierSet(BaseSpecifier):
def __init__(self, specifiers="", prereleases=None):
# Split on , to break each indidivual specifier into it's own item, and
# strip each item to remove leading/trailing whitespace.
specifiers = [s.strip() for s in specifiers.split(",") if s.strip()]
# Parsed each individual specifier, attempting first to make it a
# Specifier and falling back to a LegacySpecifier.
parsed = set()
for specifier in specifiers:
try:
parsed.add(Specifier(specifier))
except InvalidSpecifier:
parsed.add(LegacySpecifier(specifier))
# Turn our parsed specifiers into a frozen set and save them for later.
self._specs = frozenset(parsed)
# Store our prereleases value so we can use it later to determine if
# we accept prereleases or not.
self._prereleases = prereleases
def __repr__(self):
pre = (
", prereleases={0!r}".format(self.prereleases)
if self._prereleases is not None
else ""
)
return "<SpecifierSet({0!r}{1})>".format(str(self), pre)
def __str__(self):
return ",".join(sorted(str(s) for s in self._specs))
def __hash__(self):
return hash(self._specs)
def __and__(self, other):
if isinstance(other, string_types):
other = SpecifierSet(other)
elif not isinstance(other, SpecifierSet):
return NotImplemented
specifier = SpecifierSet()
specifier._specs = frozenset(self._specs | other._specs)
if self._prereleases is None and other._prereleases is not None:
specifier._prereleases = other._prereleases
elif self._prereleases is not None and other._prereleases is None:
specifier._prereleases = self._prereleases
elif self._prereleases == other._prereleases:
specifier._prereleases = self._prereleases
else:
raise ValueError(
"Cannot combine SpecifierSets with True and False prerelease "
"overrides."
)
return specifier
def __eq__(self, other):
if isinstance(other, string_types):
other = SpecifierSet(other)
elif isinstance(other, _IndividualSpecifier):
other = SpecifierSet(str(other))
elif not isinstance(other, SpecifierSet):
return NotImplemented
return self._specs == other._specs
def __ne__(self, other):
if isinstance(other, string_types):
other = SpecifierSet(other)
elif isinstance(other, _IndividualSpecifier):
other = SpecifierSet(str(other))
elif not isinstance(other, SpecifierSet):
return NotImplemented
return self._specs != other._specs
@property
def prereleases(self):
# If we have been given an explicit prerelease modifier, then we'll
# pass that through here.
if self._prereleases is not None:
return self._prereleases
# Otherwise we'll see if any of the given specifiers accept
# prereleases, if any of them do we'll return True, otherwise False.
# Note: The use of any() here means that an empty set of specifiers
# will always return False, this is an explicit design decision.
return any(s.prereleases for s in self._specs)
@prereleases.setter
def prereleases(self, value):
self._prereleases = value
def contains(self, item, prereleases=None):
# Ensure that our item is a Version or LegacyVersion instance.
if not isinstance(item, (LegacyVersion, Version)):
item = parse(item)
# We can determine if we're going to allow pre-releases by looking to
# see if any of the underlying items supports them. If none of them do
# and this item is a pre-release then we do not allow it and we can
# short circuit that here.
# Note: This means that 1.0.dev1 would not be contained in something
# like >=1.0.devabc however it would be in >=1.0.debabc,>0.0.dev0
if (not (self.prereleases or prereleases)) and item.is_prerelease:
return False
# Determine if we're forcing a prerelease or not, we bypass
# self.prereleases here and use self._prereleases because we want to
# only take into consideration actual *forced* values. The underlying
# specifiers will handle the other logic.
# The logic here is: If prereleases is anything but None, we'll just
# go aheand and continue to use that. However if
# prereleases is None, then we'll use whatever the
# value of self._prereleases is as long as it is not
# None itself.
if prereleases is None and self._prereleases is not None:
prereleases = self._prereleases
# We simply dispatch to the underlying specs here to make sure that the
# given version is contained within all of them.
# Note: This use of all() here means that an empty set of specifiers
# will always return True, this is an explicit design decision.
return all(
s.contains(item, prereleases=prereleases)
for s in self._specs
)
def filter(self, iterable, prereleases=None):
# Determine if we're forcing a prerelease or not, we bypass
# self.prereleases here and use self._prereleases because we want to
# only take into consideration actual *forced* values. The underlying
# specifiers will handle the other logic.
# The logic here is: If prereleases is anything but None, we'll just
# go aheand and continue to use that. However if
# prereleases is None, then we'll use whatever the
# value of self._prereleases is as long as it is not
# None itself.
if prereleases is None and self._prereleases is not None:
prereleases = self._prereleases
# If we have any specifiers, then we want to wrap our iterable in the
# filter method for each one, this will act as a logical AND amongst
# each specifier.
if self._specs:
for spec in self._specs:
iterable = spec.filter(iterable, prereleases=prereleases)
return iterable
# If we do not have any specifiers, then we need to have a rough filter
# which will filter out any pre-releases, unless there are no final
# releases, and which will filter out LegacyVersion in general.
else:
filtered = []
found_prereleases = []
for item in iterable:
# Ensure that we some kind of Version class for this item.
if not isinstance(item, (LegacyVersion, Version)):
parsed_version = parse(item)
else:
parsed_version = item
# Filter out any item which is parsed as a LegacyVersion
if isinstance(parsed_version, LegacyVersion):
continue
# Store any item which is a pre-release for later unless we've
# already found a final version or we are accepting prereleases
if parsed_version.is_prerelease and not prereleases:
if not filtered:
found_prereleases.append(item)
else:
filtered.append(item)
# If we've found no items except for pre-releases, then we'll go
# ahead and use the pre-releases
if not filtered and found_prereleases and prereleases is None:
return found_prereleases
return filtered

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