SickGear/lib/hachoir/parser/archive/mozilla_ar.py
JackDandy 980e05cc99 Change Hachoir can't support PY2 so backport their PY3 to prevent a need for system dependant external binaries like mediainfo.
Backported 400 revisions from rev 1de4961-8897c5b (2018-2014).
Move core/benchmark, core/cmd_line, core/memory, core/profiler and core/timeout to core/optional/*
Remove metadata/qt*

PORT: Version 2.0a3 (inline with 3.0a3 @ f80c7d5).
Basic Support for XMP Packets.
tga: improvements to adhere more closely to the spec.
pdf: slightly improved parsing.
rar: fix TypeError on unknown block types.
Add MacRoman win32 codepage.
tiff/exif: support SubIFDs and tiled images.
Add method to export metadata in dictionary.
mpeg_video: don't attempt to parse Stream past length.
mpeg_video: parse ESCR correctly, add SCR value.
Change centralise CustomFragments.
field: don't set parser class if class is None, to enable autodetect.
field: add value/display for CustomFragment.
parser: inline warning to enable tracebacks in debug mode.
Fix empty bytestrings in makePrintable.
Fix contentSize in jpeg.py to account for image_data blocks.
Fix the ELF parser.
Enhance the AR archive parser.
elf parser: fix wrong wrong fields order in parsing little endian section flags.
elf parser: add s390 as a machine type.
Flesh out mp4 parser.

PORT: Version 2.0a1 (inline with 3.0a1).
Major refactoring and PEP8.
Fix ResourceWarning warnings on files. Add a close() method and support for the context manager protocol ("with obj: ...") to parsers, input and output streams.
metadata: get comment from ZIP.
Support for InputIOStream.read(0).
Fix sizeGe when size is None.
Remove unused new_seekable_field_set file.
Remove parser Mapsforge .map.
Remove parser Parallel Realities Starfighter .pak files.
sevenzip: fix for newer archives.
java: update access flags and modifiers for Java 1.7 and update description text for most recent Java.
Support ustar prefix field in tar archives.
Remove file_system* parsers.
Remove misc parsers 3d0, 3ds, gnome_keyring, msoffice*, mstask, ole*, word*.
Remove program parsers macho, nds, prc.
Support non-8bit Character subclasses.
Python parser supports Python 3.7.
Enhance mpeg_ts parser to support MTS/M2TS.
Support for creation date in tiff.
Change don't hardcode errno constant.

PORT: 1.9.1
Internal Only: The following are legacy reference to upstream commit messages.
Relevant changes up to b0a115f8.
Use integer division.
Replace HACHOIR_ERRORS with Exception.
Fix metadata.Data: make it sortable.
Import fixes from e7de492.
PORT: Version 2.0a1 (inline with 3.0a1 @ e9f8fad).
Replace hachoir.core.field with hachoir.field
Replace hachoir.core.stream with hachoir.stream
Remove the compatibility module for PY1.5 to PY2.5.
metadata: support TIFF picture.
metadata: fix string normalization.
metadata: fix datetime regex Fix hachoir bug #57.
FileFromInputStream: fix comparison between None and an int.
InputIOStream: open the file in binary mode.
2018-03-28 00:43:11 +01:00

64 lines
2.4 KiB
Python

"""MAR (Mozilla ARchive) parser
Author: Robert Xiao
Creation date: July 10, 2007
"""
from hachoir.core.endian import BIG_ENDIAN
from hachoir.field import (RootSeekableFieldSet, FieldSet,
String, CString, UInt32, RawBytes)
from hachoir.core.text_handler import displayHandler, filesizeHandler
from hachoir.core.tools import humanUnixAttributes
from hachoir.parser import HachoirParser
class IndexEntry(FieldSet):
def createFields(self):
yield UInt32(self, "offset", "Offset in bytes relative to start of archive")
yield filesizeHandler(UInt32(self, "length", "Length in bytes"))
yield displayHandler(UInt32(self, "flags"), humanUnixAttributes)
yield CString(self, "name", "Filename (byte array)")
def createDescription(self):
return 'File %s, Size %s, Mode %s' % (
self["name"].display, self["length"].display, self["flags"].display)
class MozillaArchive(HachoirParser, RootSeekableFieldSet):
MAGIC = "MAR1"
PARSER_TAGS = {
"id": "mozilla_ar",
"category": "archive",
"file_ext": ("mar",),
"min_size": (8 + 4 + 13) * 8, # Header, Index Header, 1 Index Entry
"magic": ((MAGIC, 0),),
"description": "Mozilla Archive",
}
endian = BIG_ENDIAN
def __init__(self, stream, **args):
RootSeekableFieldSet.__init__\
(self, None, "root", stream, None, stream.askSize(self))
HachoirParser.__init__(self, stream, **args)
def validate(self):
if self.stream.readBytes(0, 4) != self.MAGIC:
return "Invalid magic"
return True
def createFields(self):
yield String(self, "magic", 4, "File signature (MAR1)", charset="ASCII")
yield UInt32(self, "index_offset", "Offset to index relative to file start")
self.seekByte(self["index_offset"].value, False)
yield UInt32(self, "index_size", "size of index in bytes")
current_index_size = 0 # bytes
while current_index_size < self["index_size"].value:
# plus 4 compensates for index_size
self.seekByte(self["index_offset"].value +
current_index_size + 4, False)
entry = IndexEntry(self, "index_entry[]")
yield entry
current_index_size += entry.size // 8
self.seekByte(entry["offset"].value, False)
yield RawBytes(self, "file[]", entry["length"].value)