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#! /usr/bin/env python
import sys
if (len(sys.argv) < 2):
print("usage: make_glwrapper.py <headers>")
sys.exit(255)
functions = []
types = []
constants = []
READ_FUNCTIONS = 0
READ_TYPES = 1
READ_CONSTANTS = 2
read_what = READ_TYPES
for x in (range(len(sys.argv) - 1)):
f = open(sys.argv[x + 1], "r")
while(True):
line = f.readline()
if (line == ""):
break
line = line.replace("\n", "").strip()
"""
if (line.find("[types]")!=-1):
read_what=READ_TYPES
continue
elif (line.find("[constants]")!=-1):
read=READ_TYPES
continue
elif (line.find("[functions]")!=-1):
read_what=READ_FUNCTIONS
continue
"""
if (line.find("#define") != -1):
if (line.find("0x") == -1 and line.find("GL_VERSION") == -1):
continue
constants.append(line)
elif (line.find("typedef") != -1):
if (line.find("(") != -1 or line.find(")") != -1 or line.find("ARB") != -1 or line.find("EXT") != -1 or line.find("GL") == -1):
continue
types.append(line)
elif (line.find("APIENTRY") != -1 and line.find("GLAPI") != -1):
if (line.find("ARB") != -1 or line.find("EXT") != -1 or line.find("NV") != -1):
continue
line = line.replace("APIENTRY", "")
line = line.replace("GLAPI", "")
glpos = line.find(" gl")
if (glpos == -1):
glpos = line.find("\tgl")
if (glpos == -1):
continue
ret = line[:glpos].strip()
line = line[glpos:].strip()
namepos = line.find("(")
if (namepos == -1):
continue
name = line[:namepos].strip()
line = line[namepos:]
argpos = line.rfind(")")
if (argpos == -1):
continue
args = line[1:argpos]
funcdata = {}
funcdata["ret"] = ret
funcdata["name"] = name
funcdata["args"] = args
functions.append(funcdata)
print(funcdata)
# print(types)
# print(constants)
# print(functions)
f = open("glwrapper.h", "w")
f.write("#ifndef GL_WRAPPER\n")
f.write("#define GL_WRAPPER\n\n\n")
header_code = """\
#if defined(__gl_h_) || defined(__GL_H__)
#error gl.h included before glwrapper.h
#endif
#if defined(__glext_h_) || defined(__GLEXT_H_)
#error glext.h included before glwrapper.h
#endif
#if defined(__gl_ATI_h_)
#error glATI.h included before glwrapper.h
#endif
#define __gl_h_
#define __GL_H__
#define __glext_h_
#define __GLEXT_H_
#define __gl_ATI_h_
#define GL_TRUE 1
#define GL_FALSE 0
#define GL_ZERO 0
#define GL_ONE 1
#define GL_NONE 0
#define GL_NO_ERROR 0
\n\n
"""
f.write("#include <stddef.h>\n\n\n")
f.write(header_code)
f.write("#ifdef __cplusplus\nextern \"C\" {\n#endif\n\n\n")
f.write("#if defined(_WIN32) && !defined(__CYGWIN__)\n")
f.write("#define GLWRP_APIENTRY __stdcall\n")
f.write("#else\n")
f.write("#define GLWRP_APIENTRY \n")
f.write("#endif\n\n")
for x in types:
f.write(x + "\n")
f.write("\n\n")
for x in constants:
f.write(x + "\n")
f.write("\n\n")
for x in functions:
f.write("extern " + x["ret"] + " GLWRP_APIENTRY (*__wrapper_" + x["name"] + ")(" + x["args"] + ");\n")
f.write("#define " + x["name"] + " __wrapper_" + x["name"] + "\n")
f.write("\n\n")
f.write("typedef void (*GLWrapperFuncPtr)(void);\n\n")
f.write("void glWrapperInit( GLWrapperFuncPtr (*wrapperFunc)(const char*) );\n")
f.write("#ifdef __cplusplus\n}\n#endif\n")
f.write("#endif\n\n")
f = open("glwrapper.c", "w")
f.write("\n\n")
f.write("#include \"glwrapper.h\"\n")
f.write("\n\n")
for x in functions:
f.write(x["ret"] + " GLWRP_APIENTRY (*__wrapper_" + x["name"] + ")(" + x["args"] + ")=NULL;\n")
f.write("\n\n")
f.write("void glWrapperInit( GLWrapperFuncPtr (*wrapperFunc)(const char*) ) {\n")
f.write("\n")
for x in functions:
f.write("\t__wrapper_" + x["name"] + "=(" + x["ret"] + " GLWRP_APIENTRY (*)(" + x["args"] + "))wrapperFunc(\"" + x["name"] + "\");\n")
f.write("\n\n")
f.write("}\n")
f.write("\n\n")
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