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/*
* This source file is part of libRocket, the HTML/CSS Interface Middleware
*
* For the latest information, see http://www.librocket.com
*
* Copyright (c) 2008-2010 CodePoint Ltd, Shift Technology Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*/
#include "precompiled.h"
#include "LuaDataFormatter.h"
#include <Rocket/Core/Lua/Interpreter.h>
#include <Rocket/Core/Log.h>
using Rocket::Core::Lua::Interpreter;
using Rocket::Core::Log;
namespace Rocket {
namespace Controls {
namespace Lua {
LuaDataFormatter::LuaDataFormatter(const Rocket::Core::String& name) : Rocket::Controls::DataFormatter(name), ref_FormatData(LUA_NOREF)
{
}
LuaDataFormatter::~LuaDataFormatter()
{
//empty
}
void LuaDataFormatter::FormatData(Rocket::Core::String& formatted_data, const Rocket::Core::StringList& raw_data)
{
if(ref_FormatData == LUA_NOREF || ref_FormatData == LUA_REFNIL)
{
Log::Message(Log::LT_ERROR, "In LuaDataFormatter: There is no value assigned to the \"FormatData\" variable.");
return;
}
lua_State* L = Interpreter::GetLuaState();
int top = lua_gettop(L);
PushDataFormatterFunctionTable(L); // push the table where the function resides
lua_rawgeti(L,-1,ref_FormatData); //push the function
if(lua_type(L,-1) != LUA_TFUNCTION)
{
Log::Message(Log::LT_ERROR, "In LuaDataFormatter: The value for the FormatData variable must be a function. You passed in a %s.", lua_typename(L,lua_type(L,-1)));
lua_settop(L,top);
return;
}
lua_newtable(L); //to hold raw_data
int tbl = lua_gettop(L);
for(unsigned int i = 0; i < raw_data.size(); i++)
{
lua_pushstring(L,raw_data[i].CString());
lua_rawseti(L,tbl,i);
}
Interpreter::ExecuteCall(1,1); //1 parameter (the table), 1 result (a string)
//top of the stack should be the return value
if(lua_type(L,-1) != LUA_TSTRING)
{
Log::Message(Log::LT_ERROR, "In LuaDataFormatter: the return value of FormatData must be a string. You returned a %s.", lua_typename(L,lua_type(L,-1)));
lua_settop(L,top);
return;
}
formatted_data = Rocket::Core::String(lua_tostring(L,-1));
lua_settop(L,top);
}
void LuaDataFormatter::PushDataFormatterFunctionTable(lua_State* L)
{
lua_getglobal(L,"LUADATAFORMATTERFUNCTIONS");
if(lua_isnoneornil(L,-1))
{
lua_newtable(L);
lua_setglobal(L,"LUADATAFORMATTERFUNCTIONS");
lua_pop(L,1); //pop the unsucessful getglobal
lua_getglobal(L,"LUADATAFORMATTERFUNCTIONS");
}
}
}
}
}
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