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-rw-r--r--ruby_1_8_5/missing/strstr.c26
1 files changed, 26 insertions, 0 deletions
diff --git a/ruby_1_8_5/missing/strstr.c b/ruby_1_8_5/missing/strstr.c
new file mode 100644
index 0000000000..1673518f06
--- /dev/null
+++ b/ruby_1_8_5/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;
+}