/*
** 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.
**
** $Date$ $Revision$
** $Header: //depot/main/gfx/lib/glu/libutil/error.c#7 $
*/

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

static const char *glErrorStrings[GL_OUT_OF_MEMORY - GL_INVALID_ENUM + 1] = {
    "invalid enumerant",
    "invalid value",
    "invalid operation",
    "stack overflow",
    "stack underflow",
    "out of memory",
};

static const char *gluErrorStrings[GLU_INVALID_OPERATION - GLU_INVALID_ENUM + 1] = {
    "invalid enumerant",
    "invalid value",
    "out of memory",
    "",				/* never used but need placeholder */
    "invalid operation",
};

#define NERRORS (sizeof(errorStrings)/sizeof(errorStrings[0]))

const GLubyte* GLAPIENTRY
gluErrorString(GLenum errorCode)
{
    if (errorCode == 0) {
	return (const unsigned char *) "no error";
    }
    if ((errorCode >= GL_INVALID_ENUM) && (errorCode <= GL_OUT_OF_MEMORY)) {
	return (const unsigned char *) glErrorStrings[errorCode - GL_INVALID_ENUM];
    }
    if (errorCode == GL_TABLE_TOO_LARGE) {
        return (const unsigned char *) "table too large";
    }
    if ((errorCode >= GLU_INVALID_ENUM) && (errorCode <= GLU_INVALID_OPERATION)) {
	return (const unsigned char *) gluErrorStrings[errorCode - GLU_INVALID_ENUM];
    }
    if ((errorCode >= GLU_NURBS_ERROR1) && (errorCode <= GLU_NURBS_ERROR37)) {
	return (const unsigned char *) __gluNURBSErrorString(errorCode - (GLU_NURBS_ERROR1 - 1));
    }
    if ((errorCode >= GLU_TESS_ERROR1) && (errorCode <= GLU_TESS_ERROR8)) {
	return (const unsigned char *) __gluTessErrorString(errorCode - (GLU_TESS_ERROR1 - 1));
    }

    return 0;
}

