reactos/lib/glu32/libutil/registry.c

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 **
  34 ** $Date$ $Revision: 1.1 $
  35 ** $Header: /cygdrive/c/RCVS/CVS/ReactOS/reactos/lib/glu32/libutil/registry.c,v 1.1 2004/02/02 16:39:16 navaraf Exp $
  36 */
  37
  38 #include "gluos.h"
  39 #include <GL/glu.h>
  40 #include <stdio.h>
  41 #include <stdlib.h>
  42 #include <string.h>
  43
  44 static const GLubyte versionString[] = "1.3";
  45 static const GLubyte extensionString[] =
  46     "GLU_EXT_nurbs_tessellator "
  47     "GLU_EXT_object_space_tess "
  48     ;
  49
  50 const GLubyte * GLAPIENTRY
  51 gluGetString(GLenum name)
  52 {
  53
  54     if (name == GLU_VERSION) {
  55         return versionString;
  56     } else if (name == GLU_EXTENSIONS) {
  57         return extensionString;
  58     }
  59     return NULL;
  60 }
  61
  62 /* extName is an extension name.
  63  * extString is a string of extensions separated by blank(s). There may or
  64  * may not be leading or trailing blank(s) in extString.
  65  * This works in cases of extensions being prefixes of another like
  66  * GL_EXT_texture and GL_EXT_texture3D.
  67  * Returns GL_TRUE if extName is found otherwise it returns GL_FALSE.
  68  */
  69 GLboolean GLAPIENTRY
  70 gluCheckExtension(const GLubyte *extName, const GLubyte *extString)
  71 {
  72   GLboolean flag = GL_FALSE;
  73   char *word;
  74   char *lookHere;
  75   char *deleteThis;
  76
  77   if (extString == NULL) return GL_FALSE;
  78
  79   deleteThis = lookHere = (char *)malloc(strlen((const char *)extString)+1);
  80   if (lookHere == NULL)
  81      return GL_FALSE;
  82   /* strtok() will modify string, so copy it somewhere */
  83   strcpy(lookHere,(const char *)extString);
  84
  85   while ((word= strtok(lookHere," ")) != NULL) {
  86      if (strcmp(word,(const char *)extName) == 0) {
  87         flag = GL_TRUE;
  88         break;
  89      }
  90      lookHere = NULL;           /* get next token */
  91   }
  92   free((void *)deleteThis);
  93   return flag;
  94 } /* gluCheckExtension() */
  95
  96
  97
  98 /*** registry.c ***/