/*
 ** License Applicability. Except to the extent portions of this file are
 ** made subject to an alternative license as permitted in the SGI Free
 ** Software License B, Version 1.1 (the "License"), the contents of this
 ** file are subject only to the provisions of the License. You may not use
 ** this file except in compliance with the License. You may obtain a copy
 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
 ** 
 ** http://oss.sgi.com/projects/FreeB
 ** 
 ** Note that, as provided in the License, the Software is distributed on an
 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
 ** 
 ** Original Code. The Original Code is: OpenGL Sample Implementation,
 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
 ** Copyright in any portions created by third parties is as indicated
 ** elsewhere herein. All Rights Reserved.
 ** 
 ** Additional Notice Provisions: The application programming interfaces
 ** established by SGI in conjunction with the Original Code are The
 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
 ** Window System(R) (Version 1.3), released October 19, 1998. This software
 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
 ** published by SGI, but has not been independently verified as being
 ** compliant with the OpenGL(R) version 1.2.1 Specification.
 **
 ** $Date: 2001/03/17 00:25:41 $ $Revision: 1.1 $
 ** $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libutil/registry.c,v 1.1 2001/03/17 00:25:41 brianp Exp $
 */

#include "gluos.h"
#include <GL/glu.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

static const GLubyte versionString[] = "1.3";
static const GLubyte extensionString[] =
	"GLU_EXT_nurbs_tessellator "
	"GLU_EXT_object_space_tess "
	;

const GLubyte * GLAPIENTRY
cgl_GLUGetString(struct GLContextIFace *Self, GLenum name)
{

	if (name == GLU_VERSION) {
		return versionString;
	} else if (name == GLU_EXTENSIONS) {
		return extensionString;
	}
	return NULL;
}

/* extName is an extension name.
 * extString is a string of extensions separated by blank(s). There may or 
 * may not be leading or trailing blank(s) in extString.
 * This works in cases of extensions being prefixes of another like
 * GL_EXT_texture and GL_EXT_texture3D.
 * Returns GL_TRUE if extName is found otherwise it returns GL_FALSE.
 */
GLboolean GLAPIENTRY
cgl_GLUCheckExtension(struct GLContextIFace *Self, 
		const GLubyte *extName, const GLubyte *extString)
{
	GLboolean flag = GL_FALSE;
	char *word;
	char *lookHere;
	char *deleteThis;

	if (extString == NULL) return GL_FALSE;

	deleteThis = lookHere = (char *)malloc(strlen((const char *)extString)+1); 
	if (lookHere == NULL)
		return GL_FALSE;
	/* strtok() will modify string, so copy it somewhere */
	strcpy(lookHere,(const char *)extString);

	while ((word= strtok(lookHere," ")) != NULL) {
		if (strcmp(word,(const char *)extName) == 0) {
			flag = GL_TRUE;
			break;
		}  
		lookHere = NULL;		/* get next token */
	}
	free((void *)deleteThis);
	return flag;
} /* gluCheckExtension() */



/*** registry.c ***/