SickGear/lib/hachoir_parser/archive/bzip2_parser.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

85 lines
2.8 KiB
Python

"""
BZIP2 archive file
Author: Victor Stinner
"""
from lib.hachoir_parser import Parser
from lib.hachoir_core.field import (ParserError, String,
Bytes, Character, UInt8, UInt32, CompressedField)
from lib.hachoir_core.endian import LITTLE_ENDIAN
from lib.hachoir_core.text_handler import textHandler, hexadecimal
try:
from bz2 import BZ2Decompressor
class Bunzip2:
def __init__(self, stream):
self.bzip2 = BZ2Decompressor()
def __call__(self, size, data=''):
try:
return self.bzip2.decompress(data)
except EOFError:
return ''
has_deflate = True
except ImportError:
has_deflate = False
class Bzip2Parser(Parser):
PARSER_TAGS = {
"id": "bzip2",
"category": "archive",
"file_ext": ("bz2",),
"mime": (u"application/x-bzip2",),
"min_size": 10*8,
"magic": (('BZh', 0),),
"description": "bzip2 archive"
}
endian = LITTLE_ENDIAN
def validate(self):
if self.stream.readBytes(0, 3) != 'BZh':
return "Wrong file signature"
if not("1" <= self["blocksize"].value <= "9"):
return "Wrong blocksize"
return True
def createFields(self):
yield String(self, "id", 3, "Identifier (BZh)", charset="ASCII")
yield Character(self, "blocksize", "Block size (KB of memory needed to uncompress)")
yield UInt8(self, "blockheader", "Block header")
if self["blockheader"].value == 0x17:
yield String(self, "id2", 4, "Identifier2 (re8P)", charset="ASCII")
yield UInt8(self, "id3", "Identifier3 (0x90)")
elif self["blockheader"].value == 0x31:
yield String(self, "id2", 5, "Identifier 2 (AY&SY)", charset="ASCII")
if self["id2"].value != "AY&SY":
raise ParserError("Invalid identifier 2 (AY&SY)!")
else:
raise ParserError("Invalid block header!")
yield textHandler(UInt32(self, "crc32", "CRC32"), hexadecimal)
if self._size is None: # TODO: is it possible to handle piped input?
raise NotImplementedError
size = (self._size - self.current_size)/8
if size:
for tag, filename in self.stream.tags:
if tag == "filename" and filename.endswith(".bz2"):
filename = filename[:-4]
break
else:
filename = None
data = Bytes(self, "file", size)
if has_deflate:
CompressedField(self, Bunzip2)
def createInputStream(**args):
if filename:
args.setdefault("tags",[]).append(("filename", filename))
return self._createInputStream(**args)
data._createInputStream = createInputStream
yield data