474 lines
15 KiB
Python
474 lines
15 KiB
Python
r"""plistlib.py -- a tool to generate and parse MacOSX .plist files.
|
|
|
|
The PropertyList (.plist) file format is a simple XML pickle supporting
|
|
basic object types, like dictionaries, lists, numbers and strings.
|
|
Usually the top level object is a dictionary.
|
|
|
|
To write out a plist file, use the writePlist(rootObject, pathOrFile)
|
|
function. 'rootObject' is the top level object, 'pathOrFile' is a
|
|
filename or a (writable) file object.
|
|
|
|
To parse a plist from a file, use the readPlist(pathOrFile) function,
|
|
with a file name or a (readable) file object as the only argument. It
|
|
returns the top level object (again, usually a dictionary).
|
|
|
|
To work with plist data in strings, you can use readPlistFromString()
|
|
and writePlistToString().
|
|
|
|
Values can be strings, integers, floats, booleans, tuples, lists,
|
|
dictionaries, Data or datetime.datetime objects. String values (including
|
|
dictionary keys) may be unicode strings -- they will be written out as
|
|
UTF-8.
|
|
|
|
The <data> plist type is supported through the Data class. This is a
|
|
thin wrapper around a Python string.
|
|
|
|
Generate Plist example:
|
|
|
|
pl = dict(
|
|
aString="Doodah",
|
|
aList=["A", "B", 12, 32.1, [1, 2, 3]],
|
|
aFloat=0.1,
|
|
anInt=728,
|
|
aDict=dict(
|
|
anotherString="<hello & hi there!>",
|
|
aUnicodeValue=u'M\xe4ssig, Ma\xdf',
|
|
aTrueValue=True,
|
|
aFalseValue=False,
|
|
),
|
|
someData=Data("<binary gunk>"),
|
|
someMoreData=Data("<lots of binary gunk>" * 10),
|
|
aDate=datetime.datetime.fromtimestamp(time.mktime(time.gmtime())),
|
|
)
|
|
# unicode keys are possible, but a little awkward to use:
|
|
pl[u'\xc5benraa'] = "That was a unicode key."
|
|
writePlist(pl, fileName)
|
|
|
|
Parse Plist example:
|
|
|
|
pl = readPlist(pathOrFile)
|
|
print pl["aKey"]
|
|
"""
|
|
|
|
|
|
__all__ = [
|
|
"readPlist", "writePlist", "readPlistFromString", "writePlistToString",
|
|
"readPlistFromResource", "writePlistToResource",
|
|
"Plist", "Data", "Dict"
|
|
]
|
|
# Note: the Plist and Dict classes have been deprecated.
|
|
|
|
import binascii
|
|
import datetime
|
|
from cStringIO import StringIO
|
|
import re
|
|
import warnings
|
|
|
|
|
|
def readPlist(pathOrFile):
|
|
"""Read a .plist file. 'pathOrFile' may either be a file name or a
|
|
(readable) file object. Return the unpacked root object (which
|
|
usually is a dictionary).
|
|
"""
|
|
didOpen = 0
|
|
if isinstance(pathOrFile, (str, unicode)):
|
|
pathOrFile = open(pathOrFile)
|
|
didOpen = 1
|
|
p = PlistParser()
|
|
rootObject = p.parse(pathOrFile)
|
|
if didOpen:
|
|
pathOrFile.close()
|
|
return rootObject
|
|
|
|
|
|
def writePlist(rootObject, pathOrFile):
|
|
"""Write 'rootObject' to a .plist file. 'pathOrFile' may either be a
|
|
file name or a (writable) file object.
|
|
"""
|
|
didOpen = 0
|
|
if isinstance(pathOrFile, (str, unicode)):
|
|
pathOrFile = open(pathOrFile, "w")
|
|
didOpen = 1
|
|
writer = PlistWriter(pathOrFile)
|
|
writer.writeln("<plist version=\"1.0\">")
|
|
writer.writeValue(rootObject)
|
|
writer.writeln("</plist>")
|
|
if didOpen:
|
|
pathOrFile.close()
|
|
|
|
|
|
def readPlistFromString(data):
|
|
"""Read a plist data from a string. Return the root object.
|
|
"""
|
|
return readPlist(StringIO(data))
|
|
|
|
|
|
def writePlistToString(rootObject):
|
|
"""Return 'rootObject' as a plist-formatted string.
|
|
"""
|
|
f = StringIO()
|
|
writePlist(rootObject, f)
|
|
return f.getvalue()
|
|
|
|
|
|
def readPlistFromResource(path, restype='plst', resid=0):
|
|
"""Read plst resource from the resource fork of path.
|
|
"""
|
|
warnings.warnpy3k("In 3.x, readPlistFromResource is removed.",
|
|
stacklevel=2)
|
|
from Carbon.File import FSRef, FSGetResourceForkName
|
|
from Carbon.Files import fsRdPerm
|
|
from Carbon import Res
|
|
fsRef = FSRef(path)
|
|
resNum = Res.FSOpenResourceFile(fsRef, FSGetResourceForkName(), fsRdPerm)
|
|
Res.UseResFile(resNum)
|
|
plistData = Res.Get1Resource(restype, resid).data
|
|
Res.CloseResFile(resNum)
|
|
return readPlistFromString(plistData)
|
|
|
|
|
|
def writePlistToResource(rootObject, path, restype='plst', resid=0):
|
|
"""Write 'rootObject' as a plst resource to the resource fork of path.
|
|
"""
|
|
warnings.warnpy3k("In 3.x, writePlistToResource is removed.", stacklevel=2)
|
|
from Carbon.File import FSRef, FSGetResourceForkName
|
|
from Carbon.Files import fsRdWrPerm
|
|
from Carbon import Res
|
|
plistData = writePlistToString(rootObject)
|
|
fsRef = FSRef(path)
|
|
resNum = Res.FSOpenResourceFile(fsRef, FSGetResourceForkName(), fsRdWrPerm)
|
|
Res.UseResFile(resNum)
|
|
try:
|
|
Res.Get1Resource(restype, resid).RemoveResource()
|
|
except Res.Error:
|
|
pass
|
|
res = Res.Resource(plistData)
|
|
res.AddResource(restype, resid, '')
|
|
res.WriteResource()
|
|
Res.CloseResFile(resNum)
|
|
|
|
|
|
class DumbXMLWriter:
|
|
|
|
def __init__(self, file, indentLevel=0, indent="\t"):
|
|
self.file = file
|
|
self.stack = []
|
|
self.indentLevel = indentLevel
|
|
self.indent = indent
|
|
|
|
def beginElement(self, element):
|
|
self.stack.append(element)
|
|
self.writeln("<%s>" % element)
|
|
self.indentLevel += 1
|
|
|
|
def endElement(self, element):
|
|
assert self.indentLevel > 0
|
|
assert self.stack.pop() == element
|
|
self.indentLevel -= 1
|
|
self.writeln("</%s>" % element)
|
|
|
|
def simpleElement(self, element, value=None):
|
|
if value is not None:
|
|
value = _escapeAndEncode(value)
|
|
self.writeln("<%s>%s</%s>" % (element, value, element))
|
|
else:
|
|
self.writeln("<%s/>" % element)
|
|
|
|
def writeln(self, line):
|
|
if line:
|
|
self.file.write(self.indentLevel * self.indent + line + "\n")
|
|
else:
|
|
self.file.write("\n")
|
|
|
|
|
|
# Contents should conform to a subset of ISO 8601
|
|
# (in particular, YYYY '-' MM '-' DD 'T' HH ':' MM ':' SS 'Z'. Smaller units may be omitted with
|
|
# a loss of precision)
|
|
_dateParser = re.compile(r"(?P<year>\d\d\d\d)(?:-(?P<month>\d\d)(?:-(?P<day>\d\d)(?:T(?P<hour>\d\d)(?::(?P<minute>\d\d)(?::(?P<second>\d\d))?)?)?)?)?Z")
|
|
|
|
def _dateFromString(s):
|
|
order = ('year', 'month', 'day', 'hour', 'minute', 'second')
|
|
gd = _dateParser.match(s).groupdict()
|
|
lst = []
|
|
for key in order:
|
|
val = gd[key]
|
|
if val is None:
|
|
break
|
|
lst.append(int(val))
|
|
return datetime.datetime(*lst)
|
|
|
|
def _dateToString(d):
|
|
return '%04d-%02d-%02dT%02d:%02d:%02dZ' % (
|
|
d.year, d.month, d.day,
|
|
d.hour, d.minute, d.second
|
|
)
|
|
|
|
|
|
# Regex to find any control chars, except for \t \n and \r
|
|
_controlCharPat = re.compile(
|
|
r"[\x00\x01\x02\x03\x04\x05\x06\x07\x08\x0b\x0c\x0e\x0f"
|
|
r"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f]")
|
|
|
|
def _escapeAndEncode(text):
|
|
m = _controlCharPat.search(text)
|
|
if m is not None:
|
|
raise ValueError("strings can't contains control characters; "
|
|
"use plistlib.Data instead")
|
|
text = text.replace("\r\n", "\n") # convert DOS line endings
|
|
text = text.replace("\r", "\n") # convert Mac line endings
|
|
text = text.replace("&", "&") # escape '&'
|
|
text = text.replace("<", "<") # escape '<'
|
|
text = text.replace(">", ">") # escape '>'
|
|
return text.encode("utf-8") # encode as UTF-8
|
|
|
|
|
|
PLISTHEADER = """\
|
|
<?xml version="1.0" encoding="UTF-8"?>
|
|
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
|
|
"""
|
|
|
|
class PlistWriter(DumbXMLWriter):
|
|
|
|
def __init__(self, file, indentLevel=0, indent="\t", writeHeader=1):
|
|
if writeHeader:
|
|
file.write(PLISTHEADER)
|
|
DumbXMLWriter.__init__(self, file, indentLevel, indent)
|
|
|
|
def writeValue(self, value):
|
|
if isinstance(value, (str, unicode)):
|
|
self.simpleElement("string", value)
|
|
elif isinstance(value, bool):
|
|
# must switch for bool before int, as bool is a
|
|
# subclass of int...
|
|
if value:
|
|
self.simpleElement("true")
|
|
else:
|
|
self.simpleElement("false")
|
|
elif isinstance(value, (int, long)):
|
|
self.simpleElement("integer", "%d" % value)
|
|
elif isinstance(value, float):
|
|
self.simpleElement("real", repr(value))
|
|
elif isinstance(value, dict):
|
|
self.writeDict(value)
|
|
elif isinstance(value, Data):
|
|
self.writeData(value)
|
|
elif isinstance(value, datetime.datetime):
|
|
self.simpleElement("date", _dateToString(value))
|
|
elif isinstance(value, (tuple, list)):
|
|
self.writeArray(value)
|
|
else:
|
|
raise TypeError("unsuported type: %s" % type(value))
|
|
|
|
def writeData(self, data):
|
|
self.beginElement("data")
|
|
self.indentLevel -= 1
|
|
maxlinelength = max(16, 76 - len(self.indent.replace("\t", " " * 8) *
|
|
self.indentLevel))
|
|
for line in data.asBase64(maxlinelength).split("\n"):
|
|
if line:
|
|
self.writeln(line)
|
|
self.indentLevel += 1
|
|
self.endElement("data")
|
|
|
|
def writeDict(self, d):
|
|
self.beginElement("dict")
|
|
items = d.items()
|
|
items.sort()
|
|
for key, value in items:
|
|
if not isinstance(key, (str, unicode)):
|
|
raise TypeError("keys must be strings")
|
|
self.simpleElement("key", key)
|
|
self.writeValue(value)
|
|
self.endElement("dict")
|
|
|
|
def writeArray(self, array):
|
|
self.beginElement("array")
|
|
for value in array:
|
|
self.writeValue(value)
|
|
self.endElement("array")
|
|
|
|
|
|
class _InternalDict(dict):
|
|
|
|
# This class is needed while Dict is scheduled for deprecation:
|
|
# we only need to warn when a *user* instantiates Dict or when
|
|
# the "attribute notation for dict keys" is used.
|
|
|
|
def __getattr__(self, attr):
|
|
try:
|
|
value = self[attr]
|
|
except KeyError:
|
|
raise AttributeError, attr
|
|
from warnings import warn
|
|
warn("Attribute access from plist dicts is deprecated, use d[key] "
|
|
"notation instead", PendingDeprecationWarning, 2)
|
|
return value
|
|
|
|
def __setattr__(self, attr, value):
|
|
from warnings import warn
|
|
warn("Attribute access from plist dicts is deprecated, use d[key] "
|
|
"notation instead", PendingDeprecationWarning, 2)
|
|
self[attr] = value
|
|
|
|
def __delattr__(self, attr):
|
|
try:
|
|
del self[attr]
|
|
except KeyError:
|
|
raise AttributeError, attr
|
|
from warnings import warn
|
|
warn("Attribute access from plist dicts is deprecated, use d[key] "
|
|
"notation instead", PendingDeprecationWarning, 2)
|
|
|
|
class Dict(_InternalDict):
|
|
|
|
def __init__(self, **kwargs):
|
|
from warnings import warn
|
|
warn("The plistlib.Dict class is deprecated, use builtin dict instead",
|
|
PendingDeprecationWarning, 2)
|
|
super(Dict, self).__init__(**kwargs)
|
|
|
|
|
|
class Plist(_InternalDict):
|
|
|
|
"""This class has been deprecated. Use readPlist() and writePlist()
|
|
functions instead, together with regular dict objects.
|
|
"""
|
|
|
|
def __init__(self, **kwargs):
|
|
from warnings import warn
|
|
warn("The Plist class is deprecated, use the readPlist() and "
|
|
"writePlist() functions instead", PendingDeprecationWarning, 2)
|
|
super(Plist, self).__init__(**kwargs)
|
|
|
|
def fromFile(cls, pathOrFile):
|
|
"""Deprecated. Use the readPlist() function instead."""
|
|
rootObject = readPlist(pathOrFile)
|
|
plist = cls()
|
|
plist.update(rootObject)
|
|
return plist
|
|
fromFile = classmethod(fromFile)
|
|
|
|
def write(self, pathOrFile):
|
|
"""Deprecated. Use the writePlist() function instead."""
|
|
writePlist(self, pathOrFile)
|
|
|
|
|
|
def _encodeBase64(s, maxlinelength=76):
|
|
# copied from base64.encodestring(), with added maxlinelength argument
|
|
maxbinsize = (maxlinelength//4)*3
|
|
pieces = []
|
|
for i in range(0, len(s), maxbinsize):
|
|
chunk = s[i : i + maxbinsize]
|
|
pieces.append(binascii.b2a_base64(chunk))
|
|
return "".join(pieces)
|
|
|
|
class Data:
|
|
|
|
"""Wrapper for binary data."""
|
|
|
|
def __init__(self, data):
|
|
self.data = data
|
|
|
|
def fromBase64(cls, data):
|
|
# base64.decodestring just calls binascii.a2b_base64;
|
|
# it seems overkill to use both base64 and binascii.
|
|
return cls(binascii.a2b_base64(data))
|
|
fromBase64 = classmethod(fromBase64)
|
|
|
|
def asBase64(self, maxlinelength=76):
|
|
return _encodeBase64(self.data, maxlinelength)
|
|
|
|
def __cmp__(self, other):
|
|
if isinstance(other, self.__class__):
|
|
return cmp(self.data, other.data)
|
|
elif isinstance(other, str):
|
|
return cmp(self.data, other)
|
|
else:
|
|
return cmp(id(self), id(other))
|
|
|
|
def __repr__(self):
|
|
return "%s(%s)" % (self.__class__.__name__, repr(self.data))
|
|
|
|
|
|
class PlistParser:
|
|
|
|
def __init__(self):
|
|
self.stack = []
|
|
self.currentKey = None
|
|
self.root = None
|
|
|
|
def parse(self, fileobj):
|
|
from xml.parsers.expat import ParserCreate
|
|
parser = ParserCreate()
|
|
parser.StartElementHandler = self.handleBeginElement
|
|
parser.EndElementHandler = self.handleEndElement
|
|
parser.CharacterDataHandler = self.handleData
|
|
parser.ParseFile(fileobj)
|
|
return self.root
|
|
|
|
def handleBeginElement(self, element, attrs):
|
|
self.data = []
|
|
handler = getattr(self, "begin_" + element, None)
|
|
if handler is not None:
|
|
handler(attrs)
|
|
|
|
def handleEndElement(self, element):
|
|
handler = getattr(self, "end_" + element, None)
|
|
if handler is not None:
|
|
handler()
|
|
|
|
def handleData(self, data):
|
|
self.data.append(data)
|
|
|
|
def addObject(self, value):
|
|
if self.currentKey is not None:
|
|
self.stack[-1][self.currentKey] = value
|
|
self.currentKey = None
|
|
elif not self.stack:
|
|
# this is the root object
|
|
self.root = value
|
|
else:
|
|
self.stack[-1].append(value)
|
|
|
|
def getData(self):
|
|
data = "".join(self.data)
|
|
try:
|
|
data = data.encode("ascii")
|
|
except UnicodeError:
|
|
pass
|
|
self.data = []
|
|
return data
|
|
|
|
# element handlers
|
|
|
|
def begin_dict(self, attrs):
|
|
d = _InternalDict()
|
|
self.addObject(d)
|
|
self.stack.append(d)
|
|
def end_dict(self):
|
|
self.stack.pop()
|
|
|
|
def end_key(self):
|
|
self.currentKey = self.getData()
|
|
|
|
def begin_array(self, attrs):
|
|
a = []
|
|
self.addObject(a)
|
|
self.stack.append(a)
|
|
def end_array(self):
|
|
self.stack.pop()
|
|
|
|
def end_true(self):
|
|
self.addObject(True)
|
|
def end_false(self):
|
|
self.addObject(False)
|
|
def end_integer(self):
|
|
self.addObject(int(self.getData()))
|
|
def end_real(self):
|
|
self.addObject(float(self.getData()))
|
|
def end_string(self):
|
|
self.addObject(self.getData())
|
|
def end_data(self):
|
|
self.addObject(Data.fromBase64(self.getData()))
|
|
def end_date(self):
|
|
self.addObject(_dateFromString(self.getData()))
|