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  1. /* Copyright (C) 2002 by  Red Hat, Incorporated. All rights reserved.
  2.  *
  3.  * Permission to use, copy, modify, and distribute this software
  4.  * is freely granted, provided that this notice is preserved.
  5.  */
  6.  
  7. #include <errno.h>
  8. #include <sys/types.h>
  9. #include <string.h>
  10. #include <stdlib.h>
  11.  
  12. #include "buf_findstr.h"
  13.  
  14. /* Find string str in buffer buf of length buf_len.  Point buf to character after string,
  15.    or set it to NULL if end of buffer is reached.  Return 1 if found, 0 if not. */
  16. int
  17. _buf_findstr(const char *str, char **buf, size_t *buf_len)
  18. {
  19.   int i = 0;
  20.   int j = 0;
  21.  
  22.   for (i = 0; i < *buf_len; i++)
  23.     {
  24.       if (str[0] == (*buf)[i])
  25.         {
  26.           j = i;
  27.           while (str[j - i] && (str[j - i] == (*buf)[j])) j++;
  28.           if(str[j - i] == '\0')
  29.             {
  30.               *buf += j;
  31.               *buf_len -= j;
  32.               return 1;
  33.             }
  34.         }
  35.     }
  36.  
  37.   if (i == *buf_len)
  38.     {
  39.       *buf += *buf_len;
  40.       *buf_len = 0;
  41.     }
  42.  
  43.   return 0;
  44. }
  45.