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#!/usr/bin/env python

# (C) Copyright IBM Corporation 2004, 2005

# (C) Copyright Apple Inc. 2011

# All Rights Reserved.

#

# Permission is hereby granted, free of charge, to any person obtaining a

# copy of this software and associated documentation files (the "Software"),

# to deal in the Software without restriction, including without limitation

# on the rights to use, copy, modify, merge, publish, distribute, sub

# license, and/or sell copies of the Software, and to permit persons to whom

# the Software is furnished to do so, subject to the following conditions:

#

# The above copyright notice and this permission notice (including the next

# paragraph) shall be included in all copies or substantial portions of the

# Software.

#

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

# FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.  IN NO EVENT SHALL

# IBM AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING

# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS

# IN THE SOFTWARE.

#

# Authors:

#    Jeremy Huddleston 

#

# Based on code ogiginally by:

#    Ian Romanick 

import license

import gl_XML, glX_XML

import sys, getopt

header = """/* GLXEXT is the define used in the xserver when the GLX extension is being

 * built.  Hijack this to determine whether this file is being built for the

 * server or the client.

 */

#ifdef HAVE_DIX_CONFIG_H

#include 

#endif

#if (defined(GLXEXT) && defined(HAVE_BACKTRACE)) \\

	|| (!defined(GLXEXT) && defined(DEBUG) && !defined(_WIN32_WCE) && !defined(__CYGWIN__) && !defined(__MINGW32__) && !defined(__OpenBSD__))

#define USE_BACKTRACE

#endif

#ifdef USE_BACKTRACE

#include 

#endif

#include 

#include 

#include 

#include "main/glheader.h"

#include "glapi.h"

#include "glapitable.h"

#ifdef GLXEXT

#include "os.h"

#endif

static void

__glapi_gentable_NoOp(void) {

    const char *fstr = "Unknown";

    /* Silence potential GCC warning for some #ifdef paths.

     */

    (void) fstr;

#if defined(USE_BACKTRACE)

#if !defined(GLXEXT)

    if (getenv("MESA_DEBUG") || getenv("LIBGL_DEBUG"))

#endif

    {

        void *frames[2];

        if(backtrace(frames, 2) == 2) {

            Dl_info info;

            dladdr(frames[1], &info);

            if(info.dli_sname)

                fstr = info.dli_sname;

        }

#if !defined(GLXEXT)

        fprintf(stderr, "Call to unimplemented API: %s\\n", fstr);

#endif

    }

#endif

#if defined(GLXEXT)

    LogMessage(X_ERROR, "GLX: Call to unimplemented API: %s\\n", fstr);

#endif

}

static void

__glapi_gentable_set_remaining_noop(struct _glapi_table *disp) {

    GLuint entries = _glapi_get_dispatch_table_size();

    void **dispatch = (void **) disp;

    int i;

    /* ISO C is annoying sometimes */

    union {_glapi_proc p; void *v;} p;

    p.p = __glapi_gentable_NoOp;

    for(i=0; i < entries; i++)

        if(dispatch[i] == NULL)

            dispatch[i] = p.v;

}

struct _glapi_table *

_glapi_create_table_from_handle(void *handle, const char *symbol_prefix) {

    struct _glapi_table *disp = calloc(1, sizeof(struct _glapi_table));

    char symboln[512];

    if(!disp)

        return NULL;

    if(symbol_prefix == NULL)

        symbol_prefix = "";

"""

footer = """

    __glapi_gentable_set_remaining_noop(disp);

    return disp;

}

"""

body_template = """

    if(!disp->%(name)s) {

        void ** procp = (void **) &disp->%(name)s;

        snprintf(symboln, sizeof(symboln), "%%s%(entry_point)s", symbol_prefix);

        *procp = dlsym(handle, symboln);

    }

"""

class PrintCode(gl_XML.gl_print_base):

    def __init__(self):

        gl_XML.gl_print_base.__init__(self)

        self.name = "gl_gen_table.py (from Mesa)"

        self.license = license.bsd_license_template % ( \

"""Copyright (C) 1999-2001  Brian Paul   All Rights Reserved.

(C) Copyright IBM Corporation 2004, 2005

(C) Copyright Apple Inc 2011""", "BRIAN PAUL, IBM")

        return

    def get_stack_size(self, f):

        size = 0

        for p in f.parameterIterator():

            if p.is_padding:

                continue

            size += p.get_stack_size()

        return size

    def printRealHeader(self):

        print header

        return

    def printRealFooter(self):

        print footer

        return

    def printBody(self, api):

        for f in api.functionIterateByOffset():

            for entry_point in f.entry_points:

                vars = { 'entry_point' : entry_point,

                         'name' : f.name }

                print body_template % vars

        return

def show_usage():

    print "Usage: %s [-f input_file_name]" % sys.argv[0]

    sys.exit(1)

if __name__ == '__main__':

    file_name = "gl_API.xml"

    try:

        (args, trail) = getopt.getopt(sys.argv[1:], "m:f:")

    except Exception,e:

        show_usage()

    for (arg,val) in args:

        if arg == "-f":

            file_name = val

    printer = PrintCode()

    api = gl_XML.parse_GL_API(file_name, glX_XML.glx_item_factory())

    printer.Print(api)