--- a/Utilities/binplistlib.py Tue Oct 15 22:03:54 2013 +0200
+++ b/Utilities/binplistlib.py Fri Oct 18 23:00:41 2013 +0200
@@ -4,7 +4,8 @@
#
"""
-Module implementing a library for reading and writing binary property list files.
+Module implementing a library for reading and writing binary property list
+files.
Binary Property List (plist) files provide a faster and smaller serialization
format for property lists on OS X. This is a library for generating binary
@@ -79,14 +80,15 @@
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
#
from collections import namedtuple
@@ -112,12 +114,18 @@
This is used in keyed archiving.
"""
def __repr__(self):
+ """
+ Public method to return an object representation.
+
+ @return object representation (string)
+ """
return "Uid(%d)" % self
class Data(bytes):
"""
- Class implementing a wrapper around bytes types for representing Data values.
+ Class implementing a wrapper around bytes types for representing Data
+ values.
"""
pass
@@ -140,7 +148,8 @@
"""
Module function to read a plist file.
- @param pathOrFile name of the plist file (string) or an open file (file object)
+ @param pathOrFile name of the plist file (string) or an open file
+ (file object)
@return reference to the read object
@exception InvalidPlistException raised to signal an invalid plist file
"""
@@ -168,8 +177,10 @@
Module function to write a plist file.
@param rootObject reference to the object to be written
- @param pathOrFile name of the plist file (string) or an open file (file object)
- @param binary flag indicating the generation of a binary plist file (boolean)
+ @param pathOrFile name of the plist file (string) or an open file
+ (file object)
+ @param binary flag indicating the generation of a binary plist file
+ (boolean)
"""
if not binary:
plistlib.writePlist(rootObject, pathOrFile)
@@ -192,7 +203,6 @@
@param data plist data (bytes)
@return reference to the read object
- @exception InvalidPlistException raised to signal an invalid plist file
"""
return readPlist(BytesIO(data))
@@ -202,7 +212,9 @@
Module function to write a plist bytes object.
@param rootObject reference to the object to be written
- @param binary flag indicating the generation of a binary plist bytes object (boolean)
+ @param binary flag indicating the generation of a binary plist bytes
+ object (boolean)
+ @return bytes object containing the plist data
"""
if not binary:
return plistlib.writePlistToBytes(rootObject)
@@ -228,10 +240,11 @@
return False
PlistTrailer = namedtuple('PlistTrailer',
- 'offsetSize, objectRefSize, offsetCount, topLevelObjectNumber, offsetTableOffset')
+ 'offsetSize, objectRefSize, offsetCount, topLevelObjectNumber,'
+ ' offsetTableOffset')
PlistByteCounts = namedtuple('PlistByteCounts',
- 'nullBytes, boolBytes, intBytes, realBytes, dateBytes, dataBytes, stringBytes, '
- 'uidBytes, arrayBytes, setBytes, dictBytes')
+ 'nullBytes, boolBytes, intBytes, realBytes, dateBytes, dataBytes,'
+ ' stringBytes, uidBytes, arrayBytes, setBytes, dictBytes')
class PlistReader(object):
@@ -275,6 +288,8 @@
Private method to read the root object.
@return unpickled object
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
result = None
self.reset()
@@ -287,18 +302,22 @@
raise InvalidPlistException("File is too short.")
trailerContents = self.contents[-32:]
try:
- self.trailer = PlistTrailer._make(unpack("!xxxxxxBBQQQ", trailerContents))
+ self.trailer = PlistTrailer._make(
+ unpack("!xxxxxxBBQQQ", trailerContents))
offset_size = self.trailer.offsetSize * self.trailer.offsetCount
offset = self.trailer.offsetTableOffset
offset_contents = self.contents[offset:offset + offset_size]
offset_i = 0
while offset_i < self.trailer.offsetCount:
begin = self.trailer.offsetSize * offset_i
- tmp_contents = offset_contents[begin:begin + self.trailer.offsetSize]
- tmp_sized = self.getSizedInteger(tmp_contents, self.trailer.offsetSize)
+ tmp_contents = offset_contents[
+ begin:begin + self.trailer.offsetSize]
+ tmp_sized = self.getSizedInteger(
+ tmp_contents, self.trailer.offsetSize)
self.offsets.append(tmp_sized)
offset_i += 1
- self.setCurrentOffsetToObjectNumber(self.trailer.topLevelObjectNumber)
+ self.setCurrentOffsetToObjectNumber(
+ self.trailer.topLevelObjectNumber)
result = self.readObject()
except TypeError as e:
raise InvalidPlistException(e)
@@ -317,6 +336,8 @@
Private method to read the object data.
@return unpickled object
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
result = None
tmp_byte = self.contents[self.currentOffset:self.currentOffset + 1]
@@ -343,7 +364,8 @@
pass # fill byte
else:
raise InvalidPlistException(
- "Invalid object found at offset: {0}".format(self.currentOffset - 1))
+ "Invalid object found at offset: {0}".format(
+ self.currentOffset - 1))
# int
elif format == 0b0001:
extra = proc_extra(extra)
@@ -408,6 +430,8 @@
@param length length of the object (integer)
@return float object
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
result = 0.0
to_read = pow(2, length)
@@ -432,7 +456,8 @@
i = 0
while i < count:
fragment = self.contents[
- self.currentOffset:self.currentOffset + self.trailer.objectRefSize]
+ self.currentOffset:
+ self.currentOffset + self.trailer.objectRefSize]
ref = self.getSizedInteger(fragment, len(fragment))
refs.append(ref)
self.currentOffset += self.trailer.objectRefSize
@@ -497,7 +522,8 @@
@return unicode encoded string
"""
actual_length = length * 2
- data = self.contents[self.currentOffset:self.currentOffset + actual_length]
+ data = self.contents[
+ self.currentOffset:self.currentOffset + actual_length]
# unpack not needed?!! data = unpack(">%ds" % (actual_length), data)[0]
self.currentOffset += actual_length
return data.decode('utf_16_be')
@@ -509,8 +535,10 @@
@return date object (datetime.datetime)
"""
global apple_reference_date_offset
- result = unpack(">d", self.contents[self.currentOffset:self.currentOffset + 8])[0]
- result = datetime.datetime.utcfromtimestamp(result + apple_reference_date_offset)
+ result = unpack(">d",
+ self.contents[self.currentOffset:self.currentOffset + 8])[0]
+ result = datetime.datetime.utcfromtimestamp(
+ result + apple_reference_date_offset)
self.currentOffset += 8
return result
@@ -540,6 +568,9 @@
@param data data to extract the integer from (bytes)
@param bytes length of the integer (integer)
+ @return read integer (integer)
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
result = 0
# 1, 2, and 4 byte integers are unsigned
@@ -552,7 +583,8 @@
elif bytes == 8:
result = unpack('>q', data)[0]
else:
- raise InvalidPlistException("Encountered integer longer than 8 bytes.")
+ raise InvalidPlistException(
+ "Encountered integer longer than 8 bytes.")
return result
@@ -561,9 +593,19 @@
Class wrapping a hashable value.
"""
def __init__(self, value):
+ """
+ Constructor
+
+ @param value object value
+ """
self.value = value
def __repr__(self):
+ """
+ Public method to generate a representation of the object.
+
+ @return object representation (string)
+ """
return "<HashableWrapper: %s>" % [self.value]
@@ -572,9 +614,19 @@
Class wrapping a boolean value.
"""
def __init__(self, value):
+ """
+ Constructor
+
+ @param value object value (boolean)
+ """
self.value = value
def __repr__(self):
+ """
+ Public method to generate a representation of the object.
+
+ @return object representation (string)
+ """
return "<BoolWrapper: %s>" % self.value
@@ -624,6 +676,7 @@
If the given object has been written already, return its
position in the offset table. Otherwise, return None.
+ @param obj object
@return position of the object (integer)
"""
return self.writtenReferences.get(obj)
@@ -656,12 +709,14 @@
"""
output = self.header
wrapped_root = self.wrapRoot(root)
- should_reference_root = True # not isinstance(wrapped_root, HashableWrapper)
- self.computeOffsets(wrapped_root, asReference=should_reference_root, isRoot=True)
+ should_reference_root = True
+ self.computeOffsets(
+ wrapped_root, asReference=should_reference_root, isRoot=True)
self.trailer = self.trailer._replace(
**{'objectRefSize': self.intSize(len(self.computedUniques))})
(_, output) = self.writeObjectReference(wrapped_root, output)
- output = self.writeObject(wrapped_root, output, setReferencePosition=True)
+ output = self.writeObject(
+ wrapped_root, output, setReferencePosition=True)
# output size at this point is an upper bound on how big the
# object reference offsets need to be.
@@ -710,15 +765,32 @@
return root
def incrementByteCount(self, field, incr=1):
+ """
+ Public method to increment the byte count.
+
+ @param field field to evaluate
+ @param incr byte count increment (integer)
+ """
self.byteCounts = self.byteCounts._replace(
**{field: self.byteCounts.__getattribute__(field) + incr})
def computeOffsets(self, obj, asReference=False, isRoot=False):
+ """
+ Public method to compute offsets of an object.
+
+ @param obj plist object
+ @param asReference flag indicating offsets as references (boolean)
+ @param isRoot flag indicating a root object (boolean)
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
+ """ # __IGNORE_WARNING__
def check_key(key):
if key is None:
- raise InvalidPlistException('Dictionary keys cannot be null in plists.')
+ raise InvalidPlistException(
+ 'Dictionary keys cannot be null in plists.')
elif isinstance(key, Data):
- raise InvalidPlistException('Data cannot be dictionary keys in plists.')
+ raise InvalidPlistException(
+ 'Data cannot be dictionary keys in plists.')
elif not isinstance(key, str):
raise InvalidPlistException('Keys must be strings.')
@@ -726,6 +798,7 @@
if size > 0b1110:
size += self.intSize(size)
return size
+
# If this should be a reference, then we keep a record of it in the
# uniques table.
if asReference:
@@ -798,7 +871,8 @@
bytes=self.trailer.objectRefSize)
return (True, output)
else:
- output += self.binaryInt(position, bytes=self.trailer.objectRefSize)
+ output += self.binaryInt(
+ position, bytes=self.trailer.objectRefSize)
return (False, output)
def writeObject(self, obj, output, setReferencePosition=False):
@@ -870,7 +944,8 @@
if isNew:
objectsToWrite.append(objRef)
for objRef in objectsToWrite:
- output = self.writeObject(objRef, output, setReferencePosition=True)
+ output = self.writeObject(
+ objRef, output, setReferencePosition=True)
elif isinstance(obj, dict):
output += proc_variable_length(0b1101, len(obj))
keys = []
@@ -888,7 +963,8 @@
if isNew:
objectsToWrite.append(value)
for objRef in objectsToWrite:
- output = self.writeObject(objRef, output, setReferencePosition=True)
+ output = self.writeObject(
+ objRef, output, setReferencePosition=True)
return output
def writeOffsetTable(self, output):
@@ -897,6 +973,8 @@
@param output current output (bytes)
@return new output (bytes)
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
all_positions = []
writtenReferences = list(self.writtenReferences.items())
@@ -929,6 +1007,8 @@
@param obj integer to be packed
@param bytes length the integer should be packed into (integer)
@return serialized object (bytes)
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
result = ''
if bytes is None:
@@ -943,7 +1023,8 @@
result += pack('>q', obj)
else:
raise InvalidPlistException(
- "Core Foundation can't handle integers with size greater than 8 bytes.")
+ "Core Foundation can't handle integers with size greater"
+ " than 8 bytes.")
return result
def intSize(self, obj):
@@ -953,6 +1034,8 @@
@param obj integer object
@return number of bytes required (integer)
+ @exception InvalidPlistException raised to indicate an invalid
+ plist file
"""
# SIGNED
if obj < 0: # Signed integer, always 8 bytes
@@ -970,7 +1053,8 @@
return 8
else:
raise InvalidPlistException(
- "Core Foundation can't handle integers with size greater than 8 bytes.")
+ "Core Foundation can't handle integers with size greater"
+ " than 8 bytes.")
def realSize(self, obj):
"""
