src/mesa/drivers/dri/common/xmlpool/gen_xmlpool.py

   1 #!/usr/bin/python
   2
   3 #
   4 # Usage:
   5 #     gen_xmlpool.py /path/to/t_option.h localedir lang lang lang ...
   6 #
   7 # For each given language, this script expects to find a .mo file at
   8 # `{localedir}/{language}/LC_MESSAGES/options.mo`.
   9 #
  10
  11 import sys
  12 import gettext
  13 import re
  14
  15 # Path to t_options.h
  16 template_header_path = sys.argv[1]
  17
  18 localedir = sys.argv[2]
  19
  20 # List of supported languages
  21 languages = sys.argv[3:]
  22
  23 # Escape special characters in C strings
  24 def escapeCString (s):
  25     escapeSeqs = {'\a' : '\\a', '\b' : '\\b', '\f' : '\\f', '\n' : '\\n',
  26                   '\r' : '\\r', '\t' : '\\t', '\v' : '\\v', '\\' : '\\\\'}
  27     # " -> '' is a hack. Quotes (") aren't possible in XML attributes.
  28     # Better use Unicode characters for typographic quotes in option
  29     # descriptions and translations.
  30     i = 0
  31     r = ''
  32     while i < len(s):
  33         # Special case: escape double quote with \u201c or \u201d, depending
  34         # on whether it's an open or close quote. This is needed because plain
  35         # double quotes are not possible in XML attributes.
  36         if s[i] == '"':
  37             if i == len(s)-1 or s[i+1].isspace():
  38                 # close quote
  39                 q = u'\u201c'
  40             else:
  41                 # open quote
  42                 q = u'\u201d'
  43             r = r + q
  44         elif escapeSeqs.has_key(s[i]):
  45             r = r + escapeSeqs[s[i]]
  46         else:
  47             r = r + s[i]
  48         i = i + 1
  49     return r
  50
  51 # Expand escape sequences in C strings (needed for gettext lookup)
  52 def expandCString (s):
  53     escapeSeqs = {'a' : '\a', 'b' : '\b', 'f' : '\f', 'n' : '\n',
  54                   'r' : '\r', 't' : '\t', 'v' : '\v',
  55                   '"' : '"', '\\' : '\\'}
  56     i = 0
  57     escape = False
  58     hexa = False
  59     octa = False
  60     num = 0
  61     digits = 0
  62     r = ''
  63     while i < len(s):
  64         if not escape:
  65             if s[i] == '\\':
  66                 escape = True
  67             else:
  68                 r = r + s[i]
  69         elif hexa:
  70             if (s[i] >= '0' and s[i] <= '9') or \
  71                (s[i] >= 'a' and s[i] <= 'f') or \
  72                (s[i] >= 'A' and s[i] <= 'F'):
  73                 num = num * 16 + int(s[i],16)
  74                 digits = digits + 1
  75             else:
  76                 digits = 2
  77             if digits >= 2:
  78                 hexa = False
  79                 escape = False
  80                 r = r + chr(num)
  81         elif octa:
  82             if s[i] >= '0' and s[i] <= '7':
  83                 num = num * 8 + int(s[i],8)
  84                 digits = digits + 1
  85             else:
  86                 digits = 3
  87             if digits >= 3:
  88                 octa = False
  89                 escape = False
  90                 r = r + chr(num)
  91         else:
  92             if escapeSeqs.has_key(s[i]):
  93                 r = r + escapeSeqs[s[i]]
  94                 escape = False
  95             elif s[i] >= '0' and s[i] <= '7':
  96                 octa = True
  97                 num = int(s[i],8)
  98                 if num <= 3:
  99                     digits = 1
 100                 else:
 101                     digits = 2
 102             elif s[i] == 'x' or s[i] == 'X':
 103                 hexa = True
 104                 num = 0
 105                 digits = 0
 106             else:
 107                 r = r + s[i]
 108                 escape = False
 109         i = i + 1
 110     return r
 111
 112 # Expand matches. The first match is always a DESC or DESC_BEGIN match.
 113 # Subsequent matches are ENUM matches.
 114 #
 115 # DESC, DESC_BEGIN format: \1 \2=<lang> \3 \4=gettext(" \5=<text> \6=") \7
 116 # ENUM format:             \1 \2=gettext(" \3=<text> \4=") \5
 117 def expandMatches (matches, translations, end=None):
 118     assert len(matches) > 0
 119     nTranslations = len(translations)
 120     i = 0
 121     # Expand the description+enums for all translations
 122     for lang,trans in translations:
 123         i = i + 1
 124         # Make sure that all but the last line of a simple description
 125         # are extended with a backslash.
 126         suffix = ''
 127         if len(matches) == 1 and i < len(translations) and \
 128                not matches[0].expand (r'\7').endswith('\\'):
 129             suffix = ' \\'
 130         # Expand the description line. Need to use ugettext in order to allow
 131         # non-ascii unicode chars in the original English descriptions.
 132         text = escapeCString (trans.ugettext (unicode (expandCString (
 133             matches[0].expand (r'\5')), "utf-8"))).encode("utf-8")
 134         print matches[0].expand (r'\1' + lang + r'\3"' + text + r'"\7') + suffix
 135         # Expand any subsequent enum lines
 136         for match in matches[1:]:
 137             text = escapeCString (trans.ugettext (unicode (expandCString (
 138                 match.expand (r'\3')), "utf-8"))).encode("utf-8")
 139             print match.expand (r'\1"' + text + r'"\5')
 140
 141         # Expand description end
 142         if end:
 143             print end,
 144
 145 # Compile a list of translation classes to all supported languages.
 146 # The first translation is always a NullTranslations.
 147 translations = [("en", gettext.NullTranslations())]
 148 for lang in languages:
 149     try:
 150         trans = gettext.translation ("options", localedir, [lang])
 151     except IOError:
 152         sys.stderr.write ("Warning: language '%s' not found.\n" % lang)
 153         continue
 154     translations.append ((lang, trans))
 155
 156 # Regular expressions:
 157 reLibintl_h  = re.compile (r'#\s*include\s*<libintl.h>')
 158 reDESC       = re.compile (r'(\s*DRI_CONF_DESC\s*\(\s*)([a-z]+)(\s*,\s*)(gettext\s*\(\s*")(.*)("\s*\))(\s*\)[ \t]*\\?)$')
 159 reDESC_BEGIN = re.compile (r'(\s*DRI_CONF_DESC_BEGIN\s*\(\s*)([a-z]+)(\s*,\s*)(gettext\s*\(\s*")(.*)("\s*\))(\s*\)[ \t]*\\?)$')
 160 reENUM       = re.compile (r'(\s*DRI_CONF_ENUM\s*\([^,]+,\s*)(gettext\s*\(\s*")(.*)("\s*\))(\s*\)[ \t]*\\?)$')
 161 reDESC_END   = re.compile (r'\s*DRI_CONF_DESC_END')
 162
 163 # Print a header
 164 print \
 165 "/***********************************************************************\n" \
 166 " ***        THIS FILE IS GENERATED AUTOMATICALLY. DON'T EDIT!        ***\n" \
 167 " ***********************************************************************/"
 168
 169 # Process the options template and generate options.h with all
 170 # translations.
 171 template = file (template_header_path, "r")
 172 descMatches = []
 173 for line in template:
 174     if len(descMatches) > 0:
 175         matchENUM     = reENUM    .match (line)
 176         matchDESC_END = reDESC_END.match (line)
 177         if matchENUM:
 178             descMatches.append (matchENUM)
 179         elif matchDESC_END:
 180             expandMatches (descMatches, translations, line)
 181             descMatches = []
 182         else:
 183             sys.stderr.write (
 184                 "Warning: unexpected line inside description dropped:\n%s\n" \
 185                 % line)
 186         continue
 187     if reLibintl_h.search (line):
 188         # Ignore (comment out) #include <libintl.h>
 189         print "/* %s * commented out by gen_xmlpool.py */" % line
 190         continue
 191     matchDESC       = reDESC      .match (line)
 192     matchDESC_BEGIN = reDESC_BEGIN.match (line)
 193     if matchDESC:
 194         assert len(descMatches) == 0
 195         expandMatches ([matchDESC], translations)
 196     elif matchDESC_BEGIN:
 197         assert len(descMatches) == 0
 198         descMatches = [matchDESC_BEGIN]
 199     else:
 200         print line,
 201
 202 if len(descMatches) > 0:
 203     sys.stderr.write ("Warning: unterminated description at end of file.\n")
 204     expandMatches (descMatches, translations)