#!/usr/bin/python
# $Id$

import sys

ext=sys.argv[1]

funcs=[]
cur_func=None
for line in file("gl.spec"):
	if line[0]=='#' or line.find(':')>=0:
		continue
	elif line[0]=='\t' and cur_func:
		parts=line.split()
		if parts[0]=="category" and parts[1]==ext:
			funcs.append(cur_func)
	else:
		paren=line.find('(')
		if paren>0:
			cur_func=line[:paren]

out=file(ext.lower()+".h", "w")
out.write("#ifndef MSP_GL_%s_\n"%ext.upper())
out.write("#define MSP_GL_%s_\n"%ext.upper())

out.write("""
#include "gl.h"
#include <GL/glext.h>

namespace Msp {
namespace GL {

""")

for f in funcs:
	out.write("extern PFNGL%sPROC gl%s;\n"%(f.upper(), f))

out.write("\nvoid init_%s();\n"%ext.lower())

out.write("""
} // namespace GL
} // namespace Msp

#endif
""")

out=file(ext.lower()+".cpp", "w")
out.write("#include \"extension.h\"\n")
out.write("#include \"%s.h\"\n"%ext.lower())

out.write("""
namespace Msp {
namespace GL {

""")

for f in funcs:
	out.write("PFNGL%sPROC gl%s=0;\n"%(f.upper(), f))

out.write("\nvoid init_%s()\n{\n"%ext.lower())
for f in funcs:
	out.write("\tgl%s=reinterpret_cast<PFNGL%sPROC>(get_proc_address(\"gl%s\"));\n"%(f, f.upper(), f))
out.write("}\n")

out.write("""
} // namespace GL
} // namespace Msp
""")