python file to generate code to load opengl functions in sdl2

sdl_gl_func.py

funcs = [
    "glGenBuffers",
    "glBindBuffer",
    "glBufferData",
    "glGenVertexArrays",
    "glBindVertexArray",
    "glEnableVertexAttribArray",
    "glVertexAttribPointer",
    "glCreateShader",
    "glCompileShader",
    "glShaderSource",
    "glCreateProgram",
    "glAttachShader",
    "glLinkProgram",
    "glUseProgram",
    "glGetShaderiv",
    "glGetShaderInfoLog",
    "glDeleteShader",
    "glGetUniformLocation",
    "glUniform1f",
    "glGetProgramiv",
    "glGetAttribLocation",
    "glDetachShader",
    "glDeleteProgram",
    "glDeleteBuffers",
    "glUniform1i",
    "glUniformMatrix4fv",
    "glMapBuffer",
    "glUnmapBuffer",
    "glBlendEquation",
    "glActiveTexture"
]

decls = [""]
loads = [""]

for func in funcs:
    varType =  "PFN" + func.upper() + "PROC"
    
    decls += [varType + " " + func + ";"]
    loads += [func + " = (" + varType + ') SDL_GL_GetProcAddress("' + func + '");']

gistComment = "// Autogenerated by: https://gist.github.com/wheybags/fe2fc44e309f1942fb3e0f34e01adf5f"

header = gistComment + "\n\n"
header += "\n#ifndef SDL_GL_FUNCS\n#define SDL_GL_FUNCS\n\n"
header += "#include <SDL.h>\n\n"
header += "#ifdef GL_GLEXT_PROTOTYPES\n    #undef GL_GLEXT_PROTOTYPES\n#endif\n\n"


# Some functions defined in SDL_opengl.h give linker errors on windows. 
# You can still retrieve them using SDL_GL_GetProcAddress like normal,
# but the declaration in the header conflicts with the one we generate.
# Soooo, we use a nasty preprocessor hack to "remove" the function from
# the header.
brokenDeclarations = ["glBlendEquation", "glActiveTexture"]

for func in brokenDeclarations:
    header += "#define " + func + " " + func + "_BROKEN_SDL_DECLARATION\n"

header += "#include <SDL_opengl.h>\n"


for func in brokenDeclarations:
    header += "#undef " + func + "\n"


header += "\n    extern ".join(decls)
header += "\n\n    void initGlFuncs();\n\n#endif"

cpp = gistComment + "\n\n"
cpp += '#include "sdl_gl_funcs.h"\n'
cpp += '\n'.join(decls)
cpp += '\n\nvoid initGlFuncs()\n{'
cpp += "\n    ".join(loads)
cpp += "\n}"

with open("sdl_gl_funcs.h", "wb") as f:
    f.write(header)

with open("sdl_gl_funcs.cpp", "wb") as f:
    f.write(cpp)