text: /*!A cross-platform build utility based on Lua
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   *
   * Copyright (C) 2015-present, TBOOX Open Source Group.
   *
   * @author      ruki
   * @file        curdir.c
   *
   */
  
  /* //////////////////////////////////////////////////////////////////////////////////////
   * trace
   */
  #define TB_TRACE_MODULE_NAME                "curdir"
  #define TB_TRACE_MODULE_DEBUG               (0)
  
  /* //////////////////////////////////////////////////////////////////////////////////////
   * includes
   */
  #include "prefix.h"
  
  /* //////////////////////////////////////////////////////////////////////////////////////
   * implementation
   */
  tb_int_t xm_os_curdir(lua_State* lua)
  {
      // check
      tb_assert_and_check_return_val(lua, 0);
  
      // done os.curdir()
      tb_char_t path[TB_PATH_MAXN];
      if (tb_directory_current(path, sizeof(path))) lua_pushstring(lua, path);
      else lua_pushnil(lua);
  
      // ok
      return 1;
  }
  