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 ade8e01f72321a0c210788239f3dc633fc89e3b9..5cc1e7d69ddaa58c97d40a20b0c06f0afd488028 100644 (file)
--- 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);