From 5c94fcab923b85c2dd75664deb8fa2819ca5ea23 Mon Sep 17 00:00:00 2001
From: Andrew Tridgell <tridge@samba.org>
Date: Fri, 24 Sep 2004 01:21:21 +0000
Subject: r2577: - I recently found out that charaters below 0x3F are
 guaranteed not to   occur as secondary bytes in any multi-byte character set.
 This   allows for a very simple optimisation in strchr_m() and   strrchr_m().
 It might be a good idea to pick this up for Samba3.

- the horrible toktocliplist() is only used in clitar.c, so move it
  there, to prevent anyone else from being tempted to use it.
(This used to be commit 663b7b75ddd838ce547425b07d7ce4d4606fb479)
---
 source4/client/clitar.c | 46 +++++++++++++++++++++++++++++++++++++++
 source4/lib/util_str.c  | 57 +++++++++++--------------------------------------
 2 files changed, 58 insertions(+), 45 deletions(-)

diff --git a/source4/client/clitar.c b/source4/client/clitar.c
index 9ce9f27599..7797b686d5 100644
--- a/source4/client/clitar.c
+++ b/source4/client/clitar.c
@@ -38,6 +38,52 @@
 #include "includes.h"
 #include "clitar.h"
 
+/**
+ Convert list of tokens to array; dependent on above routine.
+ Uses last_ptr from above - bit of a hack.
+**/
+
+static char **toktocliplist(const char *ptr, int *ctok, const char *sep)
+{
+	char *s = ptr;
+	int ictok=0;
+	char **ret, **iret;
+
+	if (!sep)
+		sep = " \t\n\r";
+
+	while(*s && strchr_m(sep,*s))
+		s++;
+
+	/* nothing left? */
+	if (!*s)
+		return(NULL);
+
+	do {
+		ictok++;
+		while(*s && (!strchr_m(sep,*s)))
+			s++;
+		while(*s && strchr_m(sep,*s))
+			*s++=0;
+	} while(*s);
+	
+	*ctok=ictok;
+	s = ptr;
+	
+	if (!(ret=iret=malloc(ictok*sizeof(char *))))
+		return NULL;
+	
+	while(ictok--) {    
+		*iret++=s;
+		while(*s++)
+			;
+		while(!*s)
+			s++;
+	}
+
+	return ret;
+}
+
 static int clipfind(char **aret, int ret, char *tok);
 void dos_clean_name(char *s);
 
diff --git a/source4/lib/util_str.c b/source4/lib/util_str.c
index a71a9ee703..cbe5988238 100644
--- a/source4/lib/util_str.c
+++ b/source4/lib/util_str.c
@@ -76,51 +76,6 @@ BOOL next_token(const char **ptr,char *buff, const char *sep, size_t bufsize)
 
 static uint16_t tmpbuf[sizeof(pstring)];
 
-/**
- Convert list of tokens to array; dependent on above routine.
- Uses last_ptr from above - bit of a hack.
-**/
-
-char **toktocliplist(const char *ptr, int *ctok, const char *sep)
-{
-	char *s = ptr;
-	int ictok=0;
-	char **ret, **iret;
-
-	if (!sep)
-		sep = " \t\n\r";
-
-	while(*s && strchr_m(sep,*s))
-		s++;
-
-	/* nothing left? */
-	if (!*s)
-		return(NULL);
-
-	do {
-		ictok++;
-		while(*s && (!strchr_m(sep,*s)))
-			s++;
-		while(*s && strchr_m(sep,*s))
-			*s++=0;
-	} while(*s);
-	
-	*ctok=ictok;
-	s = ptr;
-	
-	if (!(ret=iret=malloc(ictok*sizeof(char *))))
-		return NULL;
-	
-	while(ictok--) {    
-		*iret++=s;
-		while(*s++)
-			;
-		while(!*s)
-			s++;
-	}
-
-	return ret;
-}
 
 /**
  Case insensitive string compararison.
@@ -736,6 +691,12 @@ char *strchr_m(const char *s, char c)
 	pstring s2;
 	smb_ucs2_t *p;
 
+	/* characters below 0x3F are guaranteed to not appear in
+	   non-initial position in multi-byte charsets */
+	if ((c & 0xC0) == 0) {
+		return strchr(s, c);
+	}
+
 	push_ucs2(ws, s, sizeof(ws), STR_TERMINATE);
 	p = strchr_w(ws, UCS2_CHAR(c));
 	if (!p)
@@ -751,6 +712,12 @@ char *strrchr_m(const char *s, char c)
 	pstring s2;
 	smb_ucs2_t *p;
 
+	/* characters below 0x3F are guaranteed to not appear in
+	   non-initial position in multi-byte charsets */
+	if ((c & 0xC0) == 0) {
+		return strrchr(s, c);
+	}
+
 	push_ucs2(ws, s, sizeof(ws), STR_TERMINATE);
 	p = strrchr_w(ws, UCS2_CHAR(c));
 	if (!p)
-- 
cgit