From: Jo-Philipp Wich <jow@openwrt.org>
Date: Fri, 23 Nov 2012 10:15:02 +0000 (+0000)
Subject: libs/lmo: fix whitespace handling in string hashing, optimize code
X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=c647ff9f0e1af211a762dc9a773c1b5c4aacd168;p=project%2Fluci.git

libs/lmo: fix whitespace handling in string hashing, optimize code
---

diff --git a/libs/lmo/src/lmo_lualib.c b/libs/lmo/src/lmo_lualib.c
index ade8e01f72..5cc1e7d69d 100644
--- a/libs/lmo/src/lmo_lualib.c
+++ b/libs/lmo/src/lmo_lualib.c
@@ -55,17 +55,12 @@ static uint32_t _lmo_hash_string(lua_State *L, int n) {
 	if (!str || len >= sizeof(res))
 		return 0;
 
-	while (*str && isspace(*str))
-		str++;
-
-	for (prev = 0, ptr = res; *str; prev = *str, str++)
+	for (prev = ' ', ptr = res; *str; prev = *str, str++)
 	{
 		if (isspace(*str))
 		{
-			if (isspace(prev))
-				continue;
-
-			*ptr++ = ' ';
+			if (!isspace(prev))
+				*ptr++ = ' ';
 		}
 		else
 		{
@@ -73,7 +68,7 @@ static uint32_t _lmo_hash_string(lua_State *L, int n) {
 		}
 	}
 
-	while ((ptr > res) && isspace(*ptr))
+	if ((ptr > res) && isspace(*(ptr-1)))
 		ptr--;
 
 	return sfh_hash(res, ptr - res);