From 08c3907f4eb9a6235ff401e39b949dbcc929a7ee Mon Sep 17 00:00:00 2001
From: Jeremy Allison <jra@samba.org>
Date: Thu, 4 Sep 2003 23:26:13 +0000
Subject: Fastpath strchr_m for ASCII. Jeremy. (This used to be commit
 b3176f2ec246441dd483dc9757a487535b1656e6)

---
 source3/lib/util_str.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/source3/lib/util_str.c b/source3/lib/util_str.c
index e1db93a131..34fdf75f63 100644
--- a/source3/lib/util_str.c
+++ b/source3/lib/util_str.c
@@ -1110,6 +1110,19 @@ char *strchr_m(const char *s, char c)
 	pstring s2;
 	smb_ucs2_t *p;
 
+	/* this is quite a common operation, so we want it to be
+	   fast. We optimise for the ascii case, knowing that all our
+	   supported multi-byte character sets are ascii-compatible
+	   (ie. they match for the first 128 chars) */
+
+	while (*s && !(((unsigned char)s[0]) & 0x7F)) {
+		if (*s == c)
+			return s;
+	}
+
+	if (!*s)
+		return NULL;
+
 	push_ucs2(NULL, ws, s, sizeof(ws), STR_TERMINATE);
 	p = strchr_w(ws, UCS2_CHAR(c));
 	if (!p)
-- 
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