src/mesa/glapi/gl_procs.py

   1 #!/usr/bin/python2
   2
   3 # (C) Copyright IBM Corporation 2004
   4 # All Rights Reserved.
   5 #
   6 # Permission is hereby granted, free of charge, to any person obtaining a
   7 # copy of this software and associated documentation files (the "Software"),
   8 # to deal in the Software without restriction, including without limitation
   9 # on the rights to use, copy, modify, merge, publish, distribute, sub
  10 # license, and/or sell copies of the Software, and to permit persons to whom
  11 # the Software is furnished to do so, subject to the following conditions:
  12 #
  13 # The above copyright notice and this permission notice (including the next
  14 # paragraph) shall be included in all copies or substantial portions of the
  15 # Software.
  16 #
  17 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18 # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19 # FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL
  20 # IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21 # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  22 # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  23 # IN THE SOFTWARE.
  24 #
  25 # Authors:
  26 #    Ian Romanick <idr@us.ibm.com>
  27
  28 import license
  29 import gl_XML
  30 import sys, getopt
  31
  32 class PrintGlProcs(gl_XML.FilterGLAPISpecBase):
  33         name = "gl_procs.py (from Mesa)"
  34
  35         def __init__(self, long_strings):
  36                 self.long_strings = long_strings
  37                 gl_XML.FilterGLAPISpecBase.__init__(self)
  38                 self.license = license.bsd_license_template % ( \
  39 """Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.
  40 (C) Copyright IBM Corporation 2004""", "BRIAN PAUL, IBM")
  41
  42
  43         def printRealHeader(self):
  44                 print '/* This file is only included by glapi.c and is used for'
  45                 print ' * the GetProcAddress() function'
  46                 print ' */'
  47                 print ''
  48                 print 'typedef struct {'
  49                 print '    GLint Name_offset;'
  50                 print '#ifdef NEED_FUNCTION_POINTER'
  51                 print '    _glapi_proc Address;'
  52                 print '#endif'
  53                 print '    GLuint Offset;'
  54                 print '} glprocs_table_t;'
  55                 print ''
  56                 print '#ifdef NEED_FUNCTION_POINTER'
  57                 print '#  define NAME_FUNC_OFFSET(n,f,o) { n , (_glapi_proc) f , o }'
  58                 print '#else'
  59                 print '#  define NAME_FUNC_OFFSET(n,f,o) { n , o }'
  60                 print '#endif'
  61                 print ''
  62                 return
  63
  64         def printRealFooter(self):
  65                 print ''
  66                 print '#undef NAME_FUNC_OFFSET'
  67                 return
  68
  69         def printFunctionString(self, f):
  70                 if self.long_strings:
  71                         print '    "gl%s\\0"' % (f.name)
  72                 else:
  73                         print "    'g','l',",
  74                         for c in f.name:
  75                                 print "'%s'," % (c),
  76
  77                         print "'\\0',"
  78
  79         def printFunctionOffset(self, f, offset_of_name):
  80                 print '    NAME_FUNC_OFFSET( % 5u, gl%s, _gloffset_%s ),' % (offset_of_name, f.name, f.real_name)
  81
  82
  83         def printFunctions(self):
  84                 print ''
  85                 if self.long_strings:
  86                         print 'static const char gl_string_table[] ='
  87                 else:
  88                         print 'static const char gl_string_table[] = {'
  89
  90                 for f in self.functionIterator():
  91                         self.printFunctionString(f)
  92
  93                 if self.long_strings:
  94                         print '    ;'
  95                 else:
  96                         print '};'
  97
  98                 print ''
  99                 print 'static const glprocs_table_t static_functions[] = {'
 100
 101                 base_offset = 0
 102
 103                 for f in self.functionIterator():
 104                         self.printFunctionOffset(f, base_offset)
 105
 106                         # The length of the function's name, plus 2 for "gl",
 107                         # plus 1 for the NUL.
 108
 109                         base_offset += len(f.name) + 3
 110
 111                 print '    NAME_FUNC_OFFSET( -1, NULL, 0 )'
 112                 print '};'
 113                 return
 114
 115
 116 def show_usage():
 117         print "Usage: %s [-f input_file_name] [-m mode]" % sys.argv[0]
 118         print "mode can be one of:"
 119         print "    long  - Create code for compilers that can handle very "
 120         print "            long string constants. (default)"
 121         print "    short - Create code for compilers that can only handle "
 122         print "            ANSI C89 string constants."
 123         sys.exit(1)
 124
 125 if __name__ == '__main__':
 126         file_name = "gl_API.xml"
 127
 128         try:
 129                 (args, trail) = getopt.getopt(sys.argv[1:], "f:m:")
 130         except Exception,e:
 131                 show_usage()
 132
 133         long_string = 1
 134         for (arg,val) in args:
 135                 if arg == "-f":
 136                         file_name = val
 137                 elif arg == "-m":
 138                         if val == "short":
 139                                 long_string = 0
 140                         elif val == "long":
 141                                 long_string = 1
 142                         else:
 143                                 show_usage()
 144
 145         dh = PrintGlProcs( long_string )
 146         gl_XML.parse_GL_API( dh, file_name )