357 lines
10 KiB
Python
357 lines
10 KiB
Python
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# SPDX-License-Identifier: GPL-2.0+
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# Copyright (c) 2011 The Chromium OS Authors.
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#
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from __future__ import print_function
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try:
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import configparser as ConfigParser
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except:
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import ConfigParser
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import os
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import re
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import command
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import gitutil
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"""Default settings per-project.
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These are used by _ProjectConfigParser. Settings names should match
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the "dest" of the option parser from patman.py.
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"""
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_default_settings = {
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"u-boot": {},
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"linux": {
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"process_tags": "False",
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}
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}
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class _ProjectConfigParser(ConfigParser.SafeConfigParser):
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"""ConfigParser that handles projects.
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There are two main goals of this class:
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- Load project-specific default settings.
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- Merge general default settings/aliases with project-specific ones.
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# Sample config used for tests below...
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>>> try:
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... from StringIO import StringIO
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... except ImportError:
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... from io import StringIO
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>>> sample_config = '''
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... [alias]
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... me: Peter P. <likesspiders@example.com>
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... enemies: Evil <evil@example.com>
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...
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... [sm_alias]
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... enemies: Green G. <ugly@example.com>
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...
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... [sm2_alias]
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... enemies: Doc O. <pus@example.com>
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...
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... [settings]
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... am_hero: True
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... '''
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# Check to make sure that bogus project gets general alias.
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>>> config = _ProjectConfigParser("zzz")
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>>> config.readfp(StringIO(sample_config))
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>>> config.get("alias", "enemies")
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u'Evil <evil@example.com>'
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# Check to make sure that alias gets overridden by project.
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>>> config = _ProjectConfigParser("sm")
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>>> config.readfp(StringIO(sample_config))
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>>> config.get("alias", "enemies")
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u'Green G. <ugly@example.com>'
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# Check to make sure that settings get merged with project.
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>>> config = _ProjectConfigParser("linux")
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>>> config.readfp(StringIO(sample_config))
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>>> sorted(config.items("settings"))
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[(u'am_hero', u'True'), (u'process_tags', u'False')]
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# Check to make sure that settings works with unknown project.
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>>> config = _ProjectConfigParser("unknown")
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>>> config.readfp(StringIO(sample_config))
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>>> sorted(config.items("settings"))
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[(u'am_hero', u'True')]
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"""
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def __init__(self, project_name):
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"""Construct _ProjectConfigParser.
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In addition to standard SafeConfigParser initialization, this also loads
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project defaults.
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Args:
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project_name: The name of the project.
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"""
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self._project_name = project_name
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ConfigParser.SafeConfigParser.__init__(self)
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# Update the project settings in the config based on
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# the _default_settings global.
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project_settings = "%s_settings" % project_name
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if not self.has_section(project_settings):
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self.add_section(project_settings)
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project_defaults = _default_settings.get(project_name, {})
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for setting_name, setting_value in project_defaults.items():
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self.set(project_settings, setting_name, setting_value)
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def _to_unicode(self, val):
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"""Make sure a value is of type 'unicode'
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Args:
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val: string or unicode object
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Returns:
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unicode version of val
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"""
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return val if isinstance(val, unicode) else val.decode('utf-8')
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def get(self, section, option, *args, **kwargs):
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"""Extend SafeConfigParser to try project_section before section.
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Args:
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See SafeConfigParser.
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Returns:
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See SafeConfigParser.
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"""
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try:
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val = ConfigParser.SafeConfigParser.get(
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self, "%s_%s" % (self._project_name, section), option,
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*args, **kwargs
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)
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except (ConfigParser.NoSectionError, ConfigParser.NoOptionError):
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val = ConfigParser.SafeConfigParser.get(
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self, section, option, *args, **kwargs
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)
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return self._to_unicode(val)
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def items(self, section, *args, **kwargs):
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"""Extend SafeConfigParser to add project_section to section.
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Args:
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See SafeConfigParser.
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Returns:
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See SafeConfigParser.
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"""
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project_items = []
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has_project_section = False
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top_items = []
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# Get items from the project section
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try:
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project_items = ConfigParser.SafeConfigParser.items(
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self, "%s_%s" % (self._project_name, section), *args, **kwargs
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)
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has_project_section = True
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except ConfigParser.NoSectionError:
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pass
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# Get top-level items
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try:
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top_items = ConfigParser.SafeConfigParser.items(
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self, section, *args, **kwargs
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)
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except ConfigParser.NoSectionError:
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# If neither section exists raise the error on...
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if not has_project_section:
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raise
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item_dict = dict(top_items)
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item_dict.update(project_items)
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return {(self._to_unicode(item), self._to_unicode(val))
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for item, val in item_dict.iteritems()}
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def ReadGitAliases(fname):
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"""Read a git alias file. This is in the form used by git:
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alias uboot u-boot@lists.denx.de
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alias wd Wolfgang Denk <wd@denx.de>
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Args:
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fname: Filename to read
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"""
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try:
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fd = open(fname, 'r')
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except IOError:
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print("Warning: Cannot find alias file '%s'" % fname)
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return
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re_line = re.compile('alias\s+(\S+)\s+(.*)')
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for line in fd.readlines():
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line = line.strip()
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if not line or line[0] == '#':
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continue
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m = re_line.match(line)
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if not m:
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print("Warning: Alias file line '%s' not understood" % line)
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continue
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list = alias.get(m.group(1), [])
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for item in m.group(2).split(','):
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item = item.strip()
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if item:
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list.append(item)
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alias[m.group(1)] = list
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fd.close()
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def CreatePatmanConfigFile(config_fname):
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"""Creates a config file under $(HOME)/.patman if it can't find one.
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Args:
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config_fname: Default config filename i.e., $(HOME)/.patman
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Returns:
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None
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"""
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name = gitutil.GetDefaultUserName()
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if name == None:
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name = raw_input("Enter name: ")
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email = gitutil.GetDefaultUserEmail()
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if email == None:
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email = raw_input("Enter email: ")
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try:
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f = open(config_fname, 'w')
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except IOError:
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print("Couldn't create patman config file\n")
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raise
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print('''[alias]
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me: %s <%s>
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[bounces]
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nxp = Zhikang Zhang <zhikang.zhang@nxp.com>
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''' % (name, email), file=f)
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f.close();
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def _UpdateDefaults(parser, config):
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"""Update the given OptionParser defaults based on config.
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We'll walk through all of the settings from the parser
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For each setting we'll look for a default in the option parser.
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If it's found we'll update the option parser default.
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The idea here is that the .patman file should be able to update
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defaults but that command line flags should still have the final
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say.
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Args:
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parser: An instance of an OptionParser whose defaults will be
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updated.
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config: An instance of _ProjectConfigParser that we will query
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for settings.
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"""
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defaults = parser.get_default_values()
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for name, val in config.items('settings'):
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if hasattr(defaults, name):
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default_val = getattr(defaults, name)
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if isinstance(default_val, bool):
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val = config.getboolean('settings', name)
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elif isinstance(default_val, int):
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val = config.getint('settings', name)
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parser.set_default(name, val)
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else:
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print("WARNING: Unknown setting %s" % name)
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def _ReadAliasFile(fname):
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"""Read in the U-Boot git alias file if it exists.
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Args:
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fname: Filename to read.
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"""
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if os.path.exists(fname):
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bad_line = None
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with open(fname) as fd:
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linenum = 0
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for line in fd:
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linenum += 1
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line = line.strip()
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if not line or line.startswith('#'):
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continue
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words = line.split(None, 2)
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if len(words) < 3 or words[0] != 'alias':
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if not bad_line:
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bad_line = "%s:%d:Invalid line '%s'" % (fname, linenum,
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line)
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continue
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alias[words[1]] = [s.strip() for s in words[2].split(',')]
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if bad_line:
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print(bad_line)
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def _ReadBouncesFile(fname):
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"""Read in the bounces file if it exists
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Args:
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fname: Filename to read.
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"""
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if os.path.exists(fname):
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with open(fname) as fd:
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for line in fd:
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if line.startswith('#'):
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continue
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bounces.add(line.strip())
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def GetItems(config, section):
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"""Get the items from a section of the config.
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Args:
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config: _ProjectConfigParser object containing settings
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section: name of section to retrieve
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Returns:
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List of (name, value) tuples for the section
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"""
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try:
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return config.items(section)
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except ConfigParser.NoSectionError as e:
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return []
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except:
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raise
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def Setup(parser, project_name, config_fname=''):
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"""Set up the settings module by reading config files.
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Args:
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parser: The parser to update
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project_name: Name of project that we're working on; we'll look
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for sections named "project_section" as well.
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config_fname: Config filename to read ('' for default)
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"""
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# First read the git alias file if available
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_ReadAliasFile('doc/git-mailrc')
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config = _ProjectConfigParser(project_name)
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if config_fname == '':
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config_fname = '%s/.patman' % os.getenv('HOME')
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if not os.path.exists(config_fname):
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print("No config file found ~/.patman\nCreating one...\n")
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CreatePatmanConfigFile(config_fname)
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config.read(config_fname)
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for name, value in GetItems(config, 'alias'):
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alias[name] = value.split(',')
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_ReadBouncesFile('doc/bounces')
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for name, value in GetItems(config, 'bounces'):
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bounces.add(value)
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_UpdateDefaults(parser, config)
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# These are the aliases we understand, indexed by alias. Each member is a list.
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alias = {}
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bounces = set()
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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