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#include "lua/modules/luax.h"
#include "libjin/jin.h"
#include <string>
using namespace JinEngine::Filesystem;
namespace JinEngine
{
namespace Lua
{
static struct
{
AssetDatabase* fs;
} context;
static int l_init(lua_State* L)
{
context.fs = AssetDatabase::get();
return 0;
}
static int l_mount(lua_State* L)
{
const char* path = luax_checkstring(L, 1);
context.fs->mount(path);
return 0;
}
static int l_exist(lua_State * L)
{
const char* path = luax_checkstring(L, 1);
int r = context.fs->exists(path);
luax_pushboolean(L, r);
return 1;
}
static int l_isDir(lua_State* L)
{
const char* path = luax_checkstring(L, 1);
int r = context.fs->isDir(path);
luax_pushboolean(L, r);
return 1;
}
static int l_isFile(lua_State* L)
{
const char* path = luax_checkstring(L, 1);
int r = context.fs->isFile(path);
luax_pushboolean(L, r);
return 1;
}
static int loadbuffer(lua_State* L)
{
const char* filename = lua_tostring(L, -1);
Buffer bf;
context.fs->read(filename, bf);
luax_loadbuffer(L, (const char*)&bf, bf.size(), filename);
return 1;
}
static int loader(lua_State* L)
{
const char * filename = lua_tostring(L, -1);
std::string tmp(filename);
tmp += ".lua";
int size = tmp.size();
for (int i = 0; i<size - 4; ++i)
{
if (tmp[i] == '.')
{
tmp[i] = '/';
}
}
if (context.fs->exists(tmp.c_str()))
{
lua_pop(L, 1);
lua_pushstring(L, tmp.c_str());
return loadbuffer(L);
}
tmp = filename;
size = tmp.size();
for (int i = 0; i<size; ++i)
{
if (tmp[i] == '.')
tmp[i] = '/';
}
if (context.fs->isDir(tmp.c_str()))
{
tmp += "/init.lua";
if (context.fs->exists(tmp.c_str()))
{
lua_pop(L, 1);
lua_pushstring(L, tmp.c_str());
return loadbuffer(L);
}
}
lua_pushfstring(L, "\n\tno file \"%s\" in jin game directories.\n", (tmp + ".lua").c_str());
return 1;
}
static int l_read(lua_State* L)
{
AssetDatabase* fs = context.fs;
const char* file = luax_checkstring(L, 1);
unsigned int len;
Buffer buffer;
fs->read(file, buffer);
luax_pushstring(L, (char*)&buffer);
luax_pushinteger(L, buffer.size());
return 2;
}
static const luaL_Reg f[] = {
{ "init", l_init },
{ "mount", l_mount },
{ "isDirectory", l_isDir },
{ "isFile", l_isFile },
{ "exist", l_exist },
{ "read", l_read },
{ 0, 0 }
};
int luaopen_filesystem(lua_State* L)
{
luax_newlib(L, f);
luax_registersearcher(L, loader, 1);
return 0;
}
} // namespace Lua
} // namespace JinEngine
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