From daddc57abd31e30215922a716cb6d26422f3658b Mon Sep 17 00:00:00 2001
From: Roberto Ierusalimschy <roberto@inf.puc-rio.br>
Date: Thu, 3 Jan 2008 15:07:59 -0200
Subject: [PATCH] luaL_tostring -> luaL_tolstring (more generic)

---
 lauxlib.c  | 17 +++++++++++------
 lauxlib.h  |  4 ++--
 lbaselib.c |  4 ++--
 3 files changed, 15 insertions(+), 10 deletions(-)

diff --git a/lauxlib.c b/lauxlib.c
index e9f738b5..91a62dc8 100644
--- a/lauxlib.c
+++ b/lauxlib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.c,v 1.173 2007/09/05 17:17:39 roberto Exp roberto $
+** $Id: lauxlib.c,v 1.174 2007/09/14 13:26:28 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -550,23 +550,28 @@ LUALIB_API int luaL_callmeta (lua_State *L, int obj, const char *event) {
 }
 
 
-LUALIB_API const char *luaL_tostring (lua_State *L, int idx) {
+LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len) {
   if (!luaL_callmeta(L, idx, "__tostring")) {  /* no metafield? */
     switch (lua_type(L, idx)) {
       case LUA_TNUMBER:
-        return lua_pushstring(L, lua_tostring(L, idx));
+        lua_pushstring(L, lua_tostring(L, idx));
+        break;
       case LUA_TSTRING:
         lua_pushvalue(L, idx);
         break;
       case LUA_TBOOLEAN:
-        return lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false"));
+        lua_pushstring(L, (lua_toboolean(L, idx) ? "true" : "false"));
+        break;
       case LUA_TNIL:
-        return lua_pushliteral(L, "nil");
+        lua_pushliteral(L, "nil");
+        break;
       default:
-        return lua_pushfstring(L, "%s: %p", luaL_typename(L, idx),
+        lua_pushfstring(L, "%s: %p", luaL_typename(L, idx),
                                             lua_topointer(L, idx));
+        break;
     }
   }
+  if (len) *len = lua_objlen(L, -1);
   return lua_tostring(L, -1);
 }
 
diff --git a/lauxlib.h b/lauxlib.h
index e0850c60..34172b9a 100644
--- a/lauxlib.h
+++ b/lauxlib.h
@@ -1,5 +1,5 @@
 /*
-** $Id: lauxlib.h,v 1.92 2007/06/22 15:33:54 roberto Exp roberto $
+** $Id: lauxlib.h,v 1.93 2007/06/22 15:39:34 roberto Exp roberto $
 ** Auxiliary functions for building Lua libraries
 ** See Copyright Notice in lua.h
 */
@@ -33,7 +33,7 @@ LUALIB_API void (luaL_register) (lua_State *L, const char *libname,
                                 const luaL_Reg *l);
 LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
 LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
-LUALIB_API const char *luaL_tostring (lua_State *L, int idx);
+LUALIB_API const char *luaL_tolstring (lua_State *L, int idx, size_t *len);
 LUALIB_API int (luaL_typerror) (lua_State *L, int narg, const char *tname);
 LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
 LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
diff --git a/lbaselib.c b/lbaselib.c
index 32fc8cb8..f494f8be 100644
--- a/lbaselib.c
+++ b/lbaselib.c
@@ -1,5 +1,5 @@
 /*
-** $Id: lbaselib.c,v 1.200 2007/10/25 19:31:05 roberto Exp roberto $
+** $Id: lbaselib.c,v 1.201 2007/11/28 18:25:17 roberto Exp roberto $
 ** Basic library
 ** See Copyright Notice in lua.h
 */
@@ -405,7 +405,7 @@ static int luaB_xpcall (lua_State *L) {
 
 static int luaB_tostring (lua_State *L) {
   luaL_checkany(L, 1);
-  luaL_tostring(L, 1);
+  luaL_tolstring(L, 1, NULL);
   return 1;
 }