1 files changed, 49 insertions, 0 deletions
diff --git a/Objects/stringlib/find.h b/Objects/stringlib/find.h
new file mode 100644
index 0000000000..c2399ad176
--- /dev/null
+++ b/Objects/stringlib/find.h
@@ -0,0 +1,49 @@
+/* stringlib: find/index implementation */
+
+#ifndef STRINGLIB_FIND_H
+#define STRINGLIB_FIND_H
+
+#ifndef STRINGLIB_FASTSEARCH_H
+#error must include "stringlib/fastsearch.h" before including this module
+#endif
+
+Py_LOCAL(Py_ssize_t)
+stringlib_find(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
+               const STRINGLIB_CHAR* sub, Py_ssize_t sub_len)
+{
+    if (sub_len == 0)
+        return 0;
+
+    return fastsearch(str, str_len, sub, sub_len, FAST_SEARCH);
+}
+
+Py_LOCAL(Py_ssize_t)
+stringlib_rfind(const STRINGLIB_CHAR* str, Py_ssize_t str_len,
+                const STRINGLIB_CHAR* sub, Py_ssize_t sub_len)
+{
+    Py_ssize_t pos;
+
+    /* XXX - create reversefastsearch helper! */
+    if (sub_len == 0)
+	pos = str_len;
+    else {
+	Py_ssize_t j;
+        pos = -1;
+	for (j = str_len - sub_len; j >= 0; --j)
+            if (STRINGLIB_CMP(str+j, sub, sub_len) == 0) {
+                pos = j;
+                break;
+            }
+    }
+
+    return pos;
+}
+
+#endif
+
+/*
+Local variables:
+c-basic-offset: 4
+indent-tabs-mode: nil
+End:
+*/