PhysFS Lua

// LuaState.hpp

#ifdef __cplusplus
#include <lua5.2/lua.hpp>
#include <cassert>
extern "C" {
#include <physfs.h>
}
#else
#include <lua5.2/lua.h>
#include <lua5.2/lualib.h>
#include <lua5.2/lauxlib.h>
#include <assert.h>
#include <physfs.h>
#endif

typedef int (*lua_CFunction) (lua_State *L);
lua_State *L;
int physfs_LuaDofile();

// LuaState.cpp

#include "luastate.hpp"
#include <cstdlib>

int physfs_LuaLoad()
{
    int n = lua_gettop(L);
    string filename = (string)lua_tostring(L,-1);
    char* buf;
    PHYSFS_file* myfile;
    assert((myfile = PHYSFS_openRead(filename.c_str())));
    PHYSFS_sint64 length = PHYSFS_fileLength(myfile);
    buf = (char*)malloc(sizeof(char)*length);
    PHYSFS_read (myfile, buf, 1, length);
    PHYSFS_close(myfile);
    lua_pushlstring(L, buf, length);
    free(buf);
    return 1;
}

// Main.cpp

#include "luastate.hpp"
int main()
{
    L = luaL_newstate();
    luaL_openlibs(L);
    lua_register(L, "PHYSFS_LoadFile", physfs_LuaLoad);
    lua_close(L);
    return 0;
}