pyx/t1strip/fullfont.py

   1 #!/usr/bin/env python
   2 # -*- coding: ISO-8859-1 -*-
   3 #
   4 #
   5 # Copyright (C) 2004 André Wobst <wobsta@users.sourceforge.net>
   6 #
   7 # This file is part of PyX (http://pyx.sourceforge.net/).
   8 #
   9 # PyX is free software; you can redistribute it and/or modify
  10 # it under the terms of the GNU General Public License as published by
  11 # the Free Software Foundation; either version 2 of the License, or
  12 # (at your option) any later version.
  13 #
  14 # PyX is distributed in the hope that it will be useful,
  15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 # GNU General Public License for more details.
  18 #
  19 # You should have received a copy of the GNU General Public License
  20 # along with PyX; if not, write to the Free Software
  21 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  22
  23 _PFB_ASCII = "\200\1"
  24 _PFB_BIN = "\200\2"
  25 _PFB_DONE = "\200\3"
  26 _PFA = "%!"
  27
  28 def pfblength(string):
  29     if len(string) != 4:
  30         raise ValueError("invalid string length")
  31     return (ord(string[0]) +
  32             ord(string[1])*256 +
  33             ord(string[2])*256*256 +
  34             ord(string[3])*256*256*256)
  35
  36 def fullfont(file, filename):
  37     """inserts full pfa or pfb fonts
  38     - file is a file instance where the pfa output is written to
  39     - pfbfilename is the full filename of the pfa or pfb input file
  40     - the input type pfa or pfb is autodetected"""
  41
  42     infile = open(filename, "rb")
  43     blockid = infile.read(2)
  44     if blockid == _PFA:
  45         file.write(blockid)
  46         file.write(infile.read().replace("\r\n", "\n").replace("\r", "\n"))
  47     else:
  48         while 1:
  49             if len(blockid) != 2:
  50                 raise RuntimeError("EOF reached while reading blockid")
  51             if blockid == _PFB_DONE:
  52                 if infile.read() != "":
  53                     raise RuntimeError("trailing characters in pfb file")
  54                 else:
  55                     return
  56             if blockid != _PFB_ASCII and blockid != _PFB_BIN:
  57                 raise RuntimeError("invalid blockid")
  58             length = pfblength(infile.read(4))
  59             block = infile.read(length)
  60             if blockid == _PFB_ASCII:
  61                 file.write(block.replace("\r\n", "\n").replace("\r", "\n"))
  62             else:
  63                 block = [ord(c) for c in block]
  64                 while len(block) > 32:
  65                     file.write("%02x"*32 % tuple(block[:32]) + "\n")
  66                     del block[:32]
  67                 if len(block):
  68                     file.write("%02x"*len(block) % tuple(block) + "\n")
  69             blockid = infile.read(2)
  70