Return boolean values from configuration functions

Return boolean values from configuration functions to simplify usage in
the common case. Eg,:
	if not cjson.encode_invalid_numbers() then .. end

1 files changed, 8 insertions, 5 deletions

diff --git a/lua_cjson.c b/lua_cjson.c
index b64ed62..0662414 100644
--- a/lua_cjson.c
+++ b/lua_cjson.c
@@ -235,23 +235,26 @@ static int json_integer_option(lua_State *l, int optindex, int *setting,
 
 /* Process enumerated arguments for a configuration function */
 static int json_enum_option(lua_State *l, int optindex, int *setting,
-                            const char **options, int bool_value)
+                            const char **options, int bool_true)
 {
     static const char *bool_options[] = { "off", "on", NULL };
 
     if (!options) {
         options = bool_options;
-        bool_value = 1;
+        bool_true = 1;
     }
 
     if (!lua_isnil(l, optindex)) {
-        if (lua_isboolean(l, optindex))
-            *setting = lua_toboolean(l, optindex) * bool_value;
+        if (bool_true && lua_isboolean(l, optindex))
+            *setting = lua_toboolean(l, optindex) * bool_true;
         else
             *setting = luaL_checkoption(l, optindex, NULL, options);
     }
 
-    lua_pushstring(l, options[*setting]);
+    if (bool_true && (*setting == 0 || *setting == bool_true))
+        lua_pushboolean(l, *setting);
+    else
+        lua_pushstring(l, options[*setting]);
 
     return 1;
 }