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

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