1 /* strstr -
2 Copyright (C) 1995 Katsuyuki Okabe <hgc02147@niftyserve.or.jp>
3
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License
6 as published by the Free Software Foundation; either version 2 of
7 the License, or (at your option) any later version.
8
9 This library is distributed in the hope that it will be useful, but
10 WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public
15 License along with this library; if not, write to the Free Software
16 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
17
18 #ifdef HAVE_CONFIG_H
19 #include <config.h>
20 #endif
21
22 #if HAVE_STRING_H || STDC_HEADERS
23 #include <string.h>
24 #else
25 #include <strings.h>
26 #define strchr index
27 #endif
28
29 char *
strstr(string1,string2)30 strstr(string1, string2)
31 const char *string1;
32 const char *string2;
33 {
34 char *p;
35 int len;
36 int c;
37
38 p = (char *)string1;
39 len = strlen(string2);
40 c = *string2;
41 while ((p = strchr(p, c)) != (char *)0)
42 {
43 if (strncmp(p, string2, len) == 0)
44 return p;
45 p++;
46 }
47
48 return (char *)0;
49 }
50
51 /*
52 * End:
53 */
54