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SickRage/lib/hachoir_parser/misc/chm.py
echel0n 0d9fbc1ad7 Welcome to our SickBeard-TVRage Edition ...
This version of SickBeard uses both TVDB and TVRage to search and gather it's series data from allowing you to now have access to and download shows that you couldn't before because of being locked into only what TheTVDB had to offer.

Also this edition is based off the code we used in our XEM editon so it does come with scene numbering support as well as all the other features our XEM edition has to offer.

Please before using this with your existing database (sickbeard.db) please make a backup copy of it and delete any other database files such as cache.db and failed.db if present, we HIGHLY recommend starting out with no database files at all to make this a fresh start but the choice is at your own risk!

Enjoy!
2014-03-09 22:39:12 -07:00

201 lines
7.4 KiB
Python

"""
InfoTech Storage Format (ITSF) parser, used by Microsoft's HTML Help (.chm)
Document:
- Microsoft's HTML Help (.chm) format
http://www.wotsit.org (search "chm")
- chmlib library
http://www.jedrea.com/chmlib/
Author: Victor Stinner
Creation date: 2007-03-04
"""
from lib.hachoir_parser import Parser
from lib.hachoir_core.field import (Field, FieldSet, ParserError,
Int32, UInt32, UInt64,
RawBytes, PaddingBytes,
Enum, String)
from lib.hachoir_core.endian import LITTLE_ENDIAN
from lib.hachoir_parser.common.win32 import GUID
from lib.hachoir_parser.common.win32_lang_id import LANGUAGE_ID
from lib.hachoir_core.text_handler import textHandler, hexadecimal, filesizeHandler
class CWord(Field):
"""
Compressed double-word
"""
def __init__(self, parent, name, description=None):
Field.__init__(self, parent, name, 8, description)
endian = self._parent.endian
stream = self._parent.stream
addr = self.absolute_address
value = 0
byte = stream.readBits(addr, 8, endian)
while byte & 0x80:
value <<= 7
value += (byte & 0x7f)
self._size += 8
if 64 < self._size:
raise ParserError("CHM: CWord is limited to 64 bits")
addr += 8
byte = stream.readBits(addr, 8, endian)
value += byte
self.createValue = lambda: value
class Filesize_Header(FieldSet):
def createFields(self):
yield textHandler(UInt32(self, "unknown[]", "0x01FE"), hexadecimal)
yield textHandler(UInt32(self, "unknown[]", "0x0"), hexadecimal)
yield filesizeHandler(UInt64(self, "file_size"))
yield textHandler(UInt32(self, "unknown[]", "0x0"), hexadecimal)
yield textHandler(UInt32(self, "unknown[]", "0x0"), hexadecimal)
class ITSP(FieldSet):
def __init__(self, *args):
FieldSet.__init__(self, *args)
self._size = self["size"].value * 8
def createFields(self):
yield String(self, "magic", 4, "ITSP", charset="ASCII")
yield UInt32(self, "version", "Version (=1)")
yield filesizeHandler(UInt32(self, "size", "Length (in bytes) of the directory header (84)"))
yield UInt32(self, "unknown[]", "(=10)")
yield filesizeHandler(UInt32(self, "block_size", "Directory block size"))
yield UInt32(self, "density", "Density of quickref section, usually 2")
yield UInt32(self, "index_depth", "Depth of the index tree")
yield Int32(self, "nb_dir", "Chunk number of root index chunk")
yield UInt32(self, "first_pmgl", "Chunk number of first PMGL (listing) chunk")
yield UInt32(self, "last_pmgl", "Chunk number of last PMGL (listing) chunk")
yield Int32(self, "unknown[]", "-1")
yield UInt32(self, "nb_dir_chunk", "Number of directory chunks (total)")
yield Enum(UInt32(self, "lang_id", "Windows language ID"), LANGUAGE_ID)
yield GUID(self, "system_uuid", "{5D02926A-212E-11D0-9DF9-00A0C922E6EC}")
yield filesizeHandler(UInt32(self, "size2", "Same value than size"))
yield Int32(self, "unknown[]", "-1")
yield Int32(self, "unknown[]", "-1")
yield Int32(self, "unknown[]", "-1")
class ITSF(FieldSet):
def createFields(self):
yield String(self, "magic", 4, "ITSF", charset="ASCII")
yield UInt32(self, "version")
yield UInt32(self, "header_size", "Total header length (in bytes)")
yield UInt32(self, "one")
yield UInt32(self, "last_modified")
yield Enum(UInt32(self, "lang_id", "Windows Language ID"), LANGUAGE_ID)
yield GUID(self, "dir_uuid", "{7C01FD10-7BAA-11D0-9E0C-00A0-C922-E6EC}")
yield GUID(self, "stream_uuid", "{7C01FD11-7BAA-11D0-9E0C-00A0-C922-E6EC}")
yield UInt64(self, "filesize_offset")
yield filesizeHandler(UInt64(self, "filesize_len"))
yield UInt64(self, "dir_offset")
yield filesizeHandler(UInt64(self, "dir_len"))
if 3 <= self["version"].value:
yield UInt64(self, "data_offset")
class PMGL_Entry(FieldSet):
def createFields(self):
yield CWord(self, "name_len")
yield String(self, "name", self["name_len"].value, charset="UTF-8")
yield CWord(self, "space")
yield CWord(self, "start")
yield filesizeHandler(CWord(self, "length"))
def createDescription(self):
return "%s (%s)" % (self["name"].value, self["length"].display)
class PMGL(FieldSet):
def createFields(self):
# Header
yield String(self, "magic", 4, "PMGL", charset="ASCII")
yield filesizeHandler(Int32(self, "free_space",
"Length of free space and/or quickref area at end of directory chunk"))
yield Int32(self, "unknown")
yield Int32(self, "previous", "Chunk number of previous listing chunk")
yield Int32(self, "next", "Chunk number of previous listing chunk")
# Entries
stop = self.size - self["free_space"].value * 8
while self.current_size < stop:
yield PMGL_Entry(self, "entry[]")
# Padding
padding = (self.size - self.current_size) // 8
if padding:
yield PaddingBytes(self, "padding", padding)
class PMGI_Entry(FieldSet):
def createFields(self):
yield CWord(self, "name_len")
yield String(self, "name", self["name_len"].value, charset="UTF-8")
yield CWord(self, "page")
def createDescription(self):
return "%s (page #%u)" % (self["name"].value, self["page"].value)
class PMGI(FieldSet):
def createFields(self):
yield String(self, "magic", 4, "PMGI", charset="ASCII")
yield filesizeHandler(UInt32(self, "free_space",
"Length of free space and/or quickref area at end of directory chunk"))
stop = self.size - self["free_space"].value * 8
while self.current_size < stop:
yield PMGI_Entry(self, "entry[]")
padding = (self.size - self.current_size) // 8
if padding:
yield PaddingBytes(self, "padding", padding)
class Directory(FieldSet):
def createFields(self):
yield ITSP(self, "itsp")
block_size = self["itsp/block_size"].value * 8
nb_dir = self["itsp/nb_dir"].value
if nb_dir < 0:
nb_dir = 1
for index in xrange(nb_dir):
yield PMGL(self, "pmgl[]", size=block_size)
if self.current_size < self.size:
yield PMGI(self, "pmgi", size=block_size)
class ChmFile(Parser):
PARSER_TAGS = {
"id": "chm",
"category": "misc",
"file_ext": ("chm",),
"min_size": 4*8,
"magic": (("ITSF\3\0\0\0", 0),),
"description": "Microsoft's HTML Help (.chm)",
}
endian = LITTLE_ENDIAN
def validate(self):
if self.stream.readBytes(0, 4) != "ITSF":
return "Invalid magic"
if self["itsf/version"].value != 3:
return "Invalid version"
return True
def createFields(self):
yield ITSF(self, "itsf")
yield Filesize_Header(self, "file_size", size=self["itsf/filesize_len"].value*8)
padding = self.seekByte(self["itsf/dir_offset"].value)
if padding:
yield padding
yield Directory(self, "dir", size=self["itsf/dir_len"].value*8)
size = (self.size - self.current_size) // 8
if size:
yield RawBytes(self, "raw_end", size)
def createContentSize(self):
return self["file_size/file_size"].value * 8