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
_buf_findstr(const char * str,char ** buf,size_t * buf_len)17 _buf_findstr(const char *str, char **buf, size_t *buf_len)
18 {
19 size_t i = 0;
20 size_t 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
