mirror of
https://github.com/moparisthebest/SickRage
synced 2024-12-14 20:12:19 -05:00
77 lines
2.8 KiB
Python
77 lines
2.8 KiB
Python
|
"""
|
||
|
|
Microsoft Windows Help (HLP) parser for Hachoir project.
|
||
|
|
|
||
|
|
Documents:
|
||
|
|
- Windows Help File Format / Annotation File Format / SHG and MRB File Format
|
||
|
|
written by M. Winterhoff (100326.2776@compuserve.com)
|
||
|
|
found on http://www.wotsit.org/
|
||
|
|
|
||
|
|
Author: Victor Stinner
|
||
|
|
Creation date: 2007-09-03
|
||
|
|
"""
|
||
|
|
|
||
|
|
from lib.hachoir_parser import Parser
|
||
|
|
from lib.hachoir_core.field import (FieldSet,
|
||
|
|
Bits, Int32, UInt16, UInt32,
|
||
|
|
NullBytes, RawBytes, PaddingBytes, String)
|
||
|
|
from lib.hachoir_core.endian import LITTLE_ENDIAN
|
||
|
|
from lib.hachoir_core.text_handler import (textHandler, hexadecimal,
|
||
|
|
displayHandler, humanFilesize)
|
||
|
|
|
||
|
|
class FileEntry(FieldSet):
|
||
|
|
def __init__(self, *args, **kw):
|
||
|
|
FieldSet.__init__(self, *args, **kw)
|
||
|
|
self._size = self["res_space"].value * 8
|
||
|
|
|
||
|
|
def createFields(self):
|
||
|
|
yield displayHandler(UInt32(self, "res_space", "Reserved space"), humanFilesize)
|
||
|
|
yield displayHandler(UInt32(self, "used_space", "Used space"), humanFilesize)
|
||
|
|
yield Bits(self, "file_flags", 8, "(=4)")
|
||
|
|
|
||
|
|
yield textHandler(UInt16(self, "magic"), hexadecimal)
|
||
|
|
yield Bits(self, "flags", 16)
|
||
|
|
yield displayHandler(UInt16(self, "page_size", "Page size in bytes"), humanFilesize)
|
||
|
|
yield String(self, "structure", 16, strip="\0", charset="ASCII")
|
||
|
|
yield NullBytes(self, "zero", 2)
|
||
|
|
yield UInt16(self, "nb_page_splits", "Number of page splits B+ tree has suffered")
|
||
|
|
yield UInt16(self, "root_page", "Page number of B+ tree root page")
|
||
|
|
yield PaddingBytes(self, "one", 2, pattern="\xFF")
|
||
|
|
yield UInt16(self, "nb_page", "Number of B+ tree pages")
|
||
|
|
yield UInt16(self, "nb_level", "Number of levels of B+ tree")
|
||
|
|
yield UInt16(self, "nb_entry", "Number of entries in B+ tree")
|
||
|
|
|
||
|
|
size = (self.size - self.current_size)//8
|
||
|
|
if size:
|
||
|
|
yield PaddingBytes(self, "reserved_space", size)
|
||
|
|
|
||
|
|
class HlpFile(Parser):
|
||
|
|
PARSER_TAGS = {
|
||
|
|
"id": "hlp",
|
||
|
|
"category": "misc",
|
||
|
|
"file_ext": ("hlp",),
|
||
|
|
"min_size": 32,
|
||
|
|
"description": "Microsoft Windows Help (HLP)",
|
||
|
|
}
|
||
|
|
endian = LITTLE_ENDIAN
|
||
|
|
|
||
|
|
def validate(self):
|
||
|
|
if self["magic"].value != 0x00035F3F:
|
||
|
|
return "Invalid magic"
|
||
|
|
if self["filesize"].value != self.stream.size//8:
|
||
|
|
return "Invalid magic"
|
||
|
|
return True
|
||
|
|
|
||
|
|
def createFields(self):
|
||
|
|
yield textHandler(UInt32(self, "magic"), hexadecimal)
|
||
|
|
yield UInt32(self, "dir_start", "Directory start")
|
||
|
|
yield Int32(self, "first_free_block", "First free block")
|
||
|
|
yield UInt32(self, "filesize", "File size in bytes")
|
||
|
|
|
||
|
|
yield self.seekByte(self["dir_start"].value)
|
||
|
|
yield FileEntry(self, "file[]")
|
||
|
|
|
||
|
|
size = (self.size - self.current_size)//8
|
||
|
|
if size:
|
||
|
|
yield RawBytes(self, "end", size)
|
||
|
|
|