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SickRage/lib/hachoir_parser/game/laf.py

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# -*- coding: utf-8 -*-
"""
LucasArts Font parser.
Author: Cyril Zorin
Creation date: 1 January 2007
"""
from lib.hachoir_parser import Parser
from lib.hachoir_core.field import (FieldSet,
UInt8, UInt16, UInt32, GenericVector)
from lib.hachoir_core.endian import LITTLE_ENDIAN
class CharData(FieldSet):
def __init__(self, chars, *args):
FieldSet.__init__(self, *args)
self.chars = chars
def createFields(self):
for char in self.chars:
yield CharBitmap(char, self, "char_bitmap[]")
class CharBitmap(FieldSet):
def __init__(self, char, *args):
FieldSet.__init__(self, *args)
self.char = char
def createFields(self):
width = self.char["width_pixels"].value
for line in xrange(self.char["height_pixels"].value):
yield GenericVector(self, "line[]", width,
UInt8, "pixel")
class CharInfo(FieldSet):
static_size = 16 * 8
def createFields(self):
yield UInt32(self, "data_offset")
yield UInt8(self, "logical_width")
yield UInt8(self, "unknown[]")
yield UInt8(self, "unknown[]")
yield UInt8(self, "unknown[]")
yield UInt32(self, "width_pixels")
yield UInt32(self, "height_pixels")
class LafFile(Parser):
PARSER_TAGS = {
"id": "lucasarts_font",
"category": "game",
"file_ext" : ("laf",),
"min_size" : 32*8,
"description" : "LucasArts Font"
}
endian = LITTLE_ENDIAN
def validate(self):
if self["num_chars"].value != 256:
return "Invalid number of characters (%u)" % self["num_chars"].value
if self["first_char_code"].value != 0:
return "Invalid of code of first character code (%u)" % self["first_char_code"].value
if self["last_char_code"].value != 255:
return "Invalid of code of last character code (%u)" % self["last_char_code"].value
if self["char_codes/char[0]"].value != 0:
return "Invalid character code #0 (%u)" % self["char_codes/char[0]"].value
if self["chars/char[0]/data_offset"].value != 0:
return "Invalid character #0 offset"
return True
def createFields(self):
yield UInt32(self, "num_chars")
yield UInt32(self, "raw_font_data_size")
yield UInt32(self, "max_char_width")
yield UInt32(self, "min_char_width")
yield UInt32(self, "unknown[]", 4)
yield UInt32(self, "unknown[]", 4)
yield UInt32(self, "first_char_code")
yield UInt32(self, "last_char_code")
yield GenericVector(self, "char_codes", self["num_chars"].value,
UInt16, "char")
yield GenericVector(self, "chars", self["num_chars"].value,
CharInfo, "char")
# character data. we make an effort to provide
# something more meaningful than "RawBytes:
# character bitmap data"
yield CharData(self["chars"], self, "char_data")
# read to the end
if self.current_size < self._size:
yield self.seekBit(self._size, "unknown[]")