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SickRage/lib/hachoir_parser/archive/tar.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

125 lines
4.4 KiB
Python

"""
Tar archive parser.
Author: Victor Stinner
"""
from lib.hachoir_parser import Parser
from lib.hachoir_core.field import (FieldSet,
Enum, UInt8, SubFile, String, NullBytes)
from lib.hachoir_core.tools import humanFilesize, paddingSize, timestampUNIX
from lib.hachoir_core.endian import BIG_ENDIAN
import re
class FileEntry(FieldSet):
type_name = {
# 48 is "0", 49 is "1", ...
0: u"Normal disk file (old format)",
48: u"Normal disk file",
49: u"Link to previously dumped file",
50: u"Symbolic link",
51: u"Character special file",
52: u"Block special file",
53: u"Directory",
54: u"FIFO special file",
55: u"Contiguous file"
}
def getOctal(self, name):
return self.octal2int(self[name].value)
def getDatetime(self):
"""
Create modification date as Unicode string, may raise ValueError.
"""
timestamp = self.getOctal("mtime")
return timestampUNIX(timestamp)
def createFields(self):
yield String(self, "name", 100, "Name", strip="\0", charset="ISO-8859-1")
yield String(self, "mode", 8, "Mode", strip=" \0", charset="ASCII")
yield String(self, "uid", 8, "User ID", strip=" \0", charset="ASCII")
yield String(self, "gid", 8, "Group ID", strip=" \0", charset="ASCII")
yield String(self, "size", 12, "Size", strip=" \0", charset="ASCII")
yield String(self, "mtime", 12, "Modification time", strip=" \0", charset="ASCII")
yield String(self, "check_sum", 8, "Check sum", strip=" \0", charset="ASCII")
yield Enum(UInt8(self, "type", "Type"), self.type_name)
yield String(self, "lname", 100, "Link name", strip=" \0", charset="ISO-8859-1")
yield String(self, "magic", 8, "Magic", strip=" \0", charset="ASCII")
yield String(self, "uname", 32, "User name", strip=" \0", charset="ISO-8859-1")
yield String(self, "gname", 32, "Group name", strip=" \0", charset="ISO-8859-1")
yield String(self, "devmajor", 8, "Dev major", strip=" \0", charset="ASCII")
yield String(self, "devminor", 8, "Dev minor", strip=" \0", charset="ASCII")
yield NullBytes(self, "padding", 167, "Padding (zero)")
filesize = self.getOctal("size")
if filesize:
yield SubFile(self, "content", filesize, filename=self["name"].value)
size = paddingSize(self.current_size//8, 512)
if size:
yield NullBytes(self, "padding_end", size, "Padding (512 align)")
def convertOctal(self, chunk):
return self.octal2int(chunk.value)
def isEmpty(self):
return self["name"].value == ""
def octal2int(self, text):
try:
return int(text, 8)
except ValueError:
return 0
def createDescription(self):
if self.isEmpty():
desc = "(terminator, empty header)"
else:
filename = self["name"].value
filesize = humanFilesize(self.getOctal("size"))
desc = "(%s: %s, %s)" % \
(filename, self["type"].display, filesize)
return "Tar File " + desc
class TarFile(Parser):
endian = BIG_ENDIAN
PARSER_TAGS = {
"id": "tar",
"category": "archive",
"file_ext": ("tar",),
"mime": (u"application/x-tar", u"application/x-gtar"),
"min_size": 512*8,
"magic": (("ustar \0", 257*8),),
"subfile": "skip",
"description": "TAR archive",
}
_sign = re.compile("ustar *\0|[ \0]*$")
def validate(self):
if not self._sign.match(self.stream.readBytes(257*8, 8)):
return "Invalid magic number"
if self[0].name == "terminator":
return "Don't contain any file"
try:
int(self["file[0]/uid"].value, 8)
int(self["file[0]/gid"].value, 8)
int(self["file[0]/size"].value, 8)
except ValueError:
return "Invalid file size"
return True
def createFields(self):
while not self.eof:
field = FileEntry(self, "file[]")
if field.isEmpty():
yield NullBytes(self, "terminator", 512)
break
yield field
if self.current_size < self._size:
yield self.seekBit(self._size, "end")
def createContentSize(self):
return self["terminator"].address + self["terminator"].size