extgen.py

   1 #!/usr/bin/python
   2 # $Id$
   3
   4 import sys
   5
   6 ext=sys.argv[1]
   7
   8 funcs=[]
   9 cur_func=None
  10 for line in file("gl.spec"):
  11         if line[0]=='#' or line.find(':')>=0:
  12                 continue
  13         elif line[0]=='\t' and cur_func:
  14                 parts=line.split()
  15                 if parts[0]=="category" and parts[1]==ext:
  16                         funcs.append(cur_func)
  17         else:
  18                 paren=line.find('(')
  19                 if paren>0:
  20                         cur_func=line[:paren]
  21
  22 out=file(ext.lower()+".h", "w")
  23 out.write("#ifndef MSP_GL_%s_\n"%ext.upper())
  24 out.write("#define MSP_GL_%s_\n"%ext.upper())
  25
  26 out.write("""
  27 #include "gl.h"
  28 #include <GL/glext.h>
  29
  30 namespace Msp {
  31 namespace GL {
  32
  33 """)
  34
  35 for f in funcs:
  36         out.write("extern PFNGL%sPROC gl%s;\n"%(f.upper(), f))
  37
  38 out.write("\nvoid init_%s();\n"%ext.lower())
  39
  40 out.write("""
  41 } // namespace GL
  42 } // namespace Msp
  43
  44 #endif
  45 """)
  46
  47 out=file(ext.lower()+".cpp", "w")
  48 out.write("#include \"extension.h\"\n")
  49 out.write("#include \"%s.h\"\n"%ext.lower())
  50
  51 out.write("""
  52 namespace Msp {
  53 namespace GL {
  54
  55 """)
  56
  57 for f in funcs:
  58         out.write("PFNGL%sPROC gl%s=0;\n"%(f.upper(), f))
  59
  60 out.write("\nvoid init_%s()\n{\n"%ext.lower())
  61 for f in funcs:
  62         out.write("\tgl%s=reinterpret_cast<PFNGL%sPROC>(get_proc_address(\"gl%s\"));\n"%(f, f.upper(), f))
  63 out.write("}\n")
  64
  65 out.write("""
  66 } // namespace GL
  67 } // namespace Msp
  68 """)