new utility function: luaL_getlstrfield

Lua-cURL · Jul 27, 2007 · 526189d · 526189d
1 parent 37a75a7
commit 526189d
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diff --git a/src/Lua-utility.c b/src/Lua-utility.c
@@ -32,6 +32,14 @@ const char* luaL_getstrfield(lua_State* L, const char* key) {
   return val;
 }
 
+const char* luaL_getlstrfield(lua_State* L, const char* key, int *len) {
+  const char *val;
+  lua_getfield(L, -1, key);
+  val = lua_isnil(L, -1)? NULL : lua_tolstring(L, -1, len);
+  lua_pop(L, 1);
+  return val;
+}
+
 void _stackDump (lua_State *L, const char *file, int line) {
   int i;
   int top = lua_gettop(L);

diff --git a/src/Lua-utility.h b/src/Lua-utility.h
@@ -29,6 +29,7 @@
 #define luaL_checktable(L, n) luaL_checktype(L, n, LUA_TTABLE)
 /* return NULL if key doesnt exist */
 const char* luaL_getstrfield(lua_State* L, const char* key);
+const char* luaL_getlstrfield(lua_State* L, const char* key, int *len);
 
 #define stackDump(L) _stackDump(L, __FILE__, __LINE__)
 void _stackDump (lua_State *L, const char* file, int line);