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980e05cc99
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.
68 lines
2.2 KiB
Python
68 lines
2.2 KiB
Python
"""
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Microsoft Archive parser
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Author: Victor Stinner
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Creation date: 2007-03-04
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"""
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from hachoir.parser import Parser
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from hachoir.field import FieldSet, String, UInt32, SubFile
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from hachoir.core.endian import LITTLE_ENDIAN
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from hachoir.core.text_handler import textHandler, filesizeHandler, hexadecimal
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MAX_NB_FILE = 100000
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class FileIndex(FieldSet):
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static_size = 68 * 8
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def createFields(self):
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yield String(self, "filename", 56, truncate="\0", charset="ASCII")
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yield filesizeHandler(UInt32(self, "filesize"))
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yield textHandler(UInt32(self, "crc32"), hexadecimal)
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yield UInt32(self, "offset")
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def createDescription(self):
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return "File %s (%s) at %s" % (
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self["filename"].value, self["filesize"].display, self["offset"].value)
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class MarFile(Parser):
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MAGIC = "MARC"
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PARSER_TAGS = {
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"id": "mar",
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"category": "archive",
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"file_ext": ("mar",),
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"min_size": 80 * 8, # At least one file index
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"magic": ((MAGIC, 0),),
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"description": "Microsoft Archive",
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}
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endian = LITTLE_ENDIAN
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def validate(self):
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if self.stream.readBytes(0, 4) != self.MAGIC:
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return "Invalid magic"
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if self["version"].value != 3:
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return "Invalid version"
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if not (1 <= self["nb_file"].value <= MAX_NB_FILE):
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return "Invalid number of file"
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return True
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def createFields(self):
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yield String(self, "magic", 4, "File signature (MARC)", charset="ASCII")
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yield UInt32(self, "version")
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yield UInt32(self, "nb_file")
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files = []
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for index in xrange(self["nb_file"].value):
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item = FileIndex(self, "file[]")
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yield item
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if item["filesize"].value:
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files.append(item)
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files.sort(key=lambda item: item["offset"].value)
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for index in files:
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padding = self.seekByte(index["offset"].value)
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if padding:
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yield padding
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size = index["filesize"].value
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desc = "File %s" % index["filename"].value
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yield SubFile(self, "data[]", size, desc, filename=index["filename"].value)
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