diff options
Diffstat (limited to 'ruby_1_8_6/missing/strstr.c')
-rw-r--r-- | ruby_1_8_6/missing/strstr.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/ruby_1_8_6/missing/strstr.c b/ruby_1_8_6/missing/strstr.c new file mode 100644 index 0000000000..1673518f06 --- /dev/null +++ b/ruby_1_8_6/missing/strstr.c @@ -0,0 +1,26 @@ +/* public domain rewrite of strstr(3) */ + +char * +strstr(haystack, needle) + char *haystack, *needle; +{ + char *hend; + char *a, *b; + + if (*needle == 0) return haystack; + hend = haystack + strlen(haystack) - strlen(needle) + 1; + while (haystack < hend) { + if (*haystack == *needle) { + a = haystack; + b = needle; + for (;;) { + if (*b == 0) return haystack; + if (*a++ != *b++) { + break; + } + } + } + haystack++; + } + return 0; +} |