python/fontextract.py

   1 import re
   2 import getopt
   3 import sys
   4 import os
   5 import string
   6
   7 dsr_font_regex = re.compile ('%%DocumentSuppliedResources: font (.*)')
   8 begin_font_regex = re.compile ('%%BeginFont: (.*)')
   9 end_font_regex = re.compile ('%%EndFont')
  10 verbose = 0
  11
  12 try:
  13         import gettext
  14         gettext.bindtextdomain ('lilypond', localedir)
  15         gettext.textdomain ('lilypond')
  16         _ = gettext.gettext
  17 except:
  18         def _ (s):
  19                 return s
  20
  21 def scan_files (files):
  22         file_of_font_dict = {}
  23         for f in files:
  24                 if verbose:
  25                         sys.stderr.write (_('Scanning %s') % f + '\n')
  26
  27                 header = open (f, 'r').read ()
  28                 idx = 0
  29
  30                 extract_from_this = []
  31                 while idx < len (header):
  32                         match = dsr_font_regex.search (header[idx:])
  33                         if not match:
  34                                 break
  35                         name = match.group (1)
  36                         idx += match.end (1)
  37                         if file_of_font_dict.has_key (name):
  38                                 continue
  39
  40                         file_of_font_dict[name] = f
  41
  42         return file_of_font_dict
  43
  44 def get_file_fonts_dict (file_of_font_dict):
  45         dict = {}
  46         for (n, f) in file_of_font_dict.items ():
  47                 if not dict.has_key (f):
  48                         dict[f] = []
  49
  50                 dict[f].append (n)
  51
  52         return dict
  53
  54 def extract_fonts_from_file (extract_from_this, font_dict, filename):
  55         if extract_from_this:
  56                 curr_font = []
  57                 curr_font_name = []
  58                 in_font = 0
  59                 for l in open (filename).readlines ():
  60                         if not in_font and begin_font_regex.match (l):
  61                                 in_font = 1
  62                                 curr_font_name = begin_font_regex.match (l).group (1)
  63                                 curr_font = []
  64                         elif in_font and end_font_regex.match (l):
  65                                 in_font = 0
  66
  67                                 if curr_font_name in extract_from_this:
  68                                         font_dict[curr_font_name] = string.join (curr_font, '')
  69                                         if verbose:
  70                                                 sys.stderr.write (_('Extracted %s')
  71                                                                   % curr_font_name + '\n')
  72
  73                                 extract_from_this.remove (curr_font_name)
  74                         elif in_font:
  75                                 curr_font.append (l)
  76                         if not extract_from_this:
  77                                 break
  78
  79                 if extract_from_this:
  80                         sys.stderr.write ("Failed to extract %s from %s\n"
  81                                           % (string.join (extract_from_this, ', '), filename))
  82
  83 def write_extracted_fonts (output_file_name, font_dict):
  84         output = open (output_file_name, 'w')
  85         output.write ('''%!PS-Adobe-3.0
  86 %%Creator: lilypond-extract-fonts
  87 ''')
  88
  89         for x in font_dict.keys ():
  90                 output.write ('%%%%DocumentSuppliedResources: font %s\n' % x)
  91
  92         output.write ('''%%EndComments\n''')
  93
  94         for (k,v) in font_dict.items ():
  95                 output.write ('\n%%%%BeginFont: %s\n' % k)
  96                 output.write (v)
  97                 output.write ('\n%%%%EndFont')
  98
  99
 100 def extract_fonts (output_file_name, input_files):
 101         d = scan_files (input_files)
 102         ff = get_file_fonts_dict (d)
 103
 104         font_dict = {}
 105         for (file, fonts) in ff.items ():
 106                 extract_fonts_from_file (fonts, font_dict, file)
 107
 108         write_extracted_fonts (output_file_name, font_dict)
 109
 110
 111 if __name__ == '__main__':
 112         extract_fonts ('fonts.ps', sys.argv[1:])