summaryrefslogtreecommitdiff
path: root/ruby_1_8_6/missing/strstr.c
diff options
context:
space:
mode:
authorshyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2007-08-22 01:53:51 +0000
committershyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>2007-08-22 01:53:51 +0000
commit1e760c0be3ed35874204114e7454509f740c0fe2 (patch)
treea75eb2b1eea073830902d1fa49c568c4525c8b57 /ruby_1_8_6/missing/strstr.c
parenta2055d63b41a6678dc7aeb17d0bece314e700c5a (diff)
add tag v1_8_6_71v1_8_5_71
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_8_5_71@13189 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
Diffstat (limited to 'ruby_1_8_6/missing/strstr.c')
-rw-r--r--ruby_1_8_6/missing/strstr.c26
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;
+}