qemu/roms/SLOF/lib/libc/string/strtok.c

   1 /******************************************************************************
   2  * Copyright (c) 2004, 2008 IBM Corporation
   3  * All rights reserved.
   4  * This program and the accompanying materials
   5  * are made available under the terms of the BSD License
   6  * which accompanies this distribution, and is available at
   7  * http://www.opensource.org/licenses/bsd-license.php
   8  *
   9  * Contributors:
  10  *     IBM Corporation - initial implementation
  11  *****************************************************************************/
  12
  13 #include <string.h>
  14
  15 char *
  16 strtok(char *src, const char *pattern)
  17 {
  18         static char *nxtTok;
  19         char *retVal = NULL;
  20
  21         if (!src)
  22                 src = nxtTok;
  23
  24         while (*src) {
  25                 const char *pp = pattern;
  26                 while (*pp) {
  27                         if (*pp == *src) {
  28                                 break;
  29                         }
  30                         pp++;
  31                 }
  32                 if (!*pp) {
  33                         if (!retVal)
  34                                 retVal = src;
  35                         else if (!src[-1])
  36                                 break;
  37                 } else
  38                         *src = '\0';
  39                 src++;
  40         }
  41
  42         nxtTok = src;
  43
  44         return retVal;
  45 }