diff options
Diffstat (limited to 'trunk/missing/strstr.c')
-rw-r--r-- | trunk/missing/strstr.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/trunk/missing/strstr.c b/trunk/missing/strstr.c new file mode 100644 index 0000000000..2e9c282fb1 --- /dev/null +++ b/trunk/missing/strstr.c @@ -0,0 +1,25 @@ +/* public domain rewrite of strstr(3) */ + +char * +strstr(const char *haystack, const char *needle) +{ + const char *hend; + const char *a, *b; + + if (*needle == 0) return (char *)haystack; + hend = haystack + strlen(haystack) - strlen(needle) + 1; + while (haystack < hend) { + if (*haystack == *needle) { + a = haystack; + b = needle; + for (;;) { + if (*b == 0) return (char *)haystack; + if (*a++ != *b++) { + break; + } + } + } + haystack++; + } + return 0; +} |