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/*!The Automatic Cross-platform Build Tool
*
* XMake is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* XMake is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with XMake;
* If not, see <a href="http://www.gnu.org/licenses/"> http://www.gnu.org/licenses/</a>
*
* Copyright (C) 2015 - 2016, ruki All rights reserved.
*
* @author ruki
* @file getenv.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "getenv"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* macros
*/
// the separator
#ifdef TB_CONFIG_OS_WINDOWS
# define XM_OS_ENV_SEP ';'
#else
# define XM_OS_ENV_SEP ':'
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_os_getenv(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
// get the name
tb_char_t const* name = luaL_checkstring(lua, 1);
tb_check_return_val(name, 0);
// init values
tb_string_t values;
if (!tb_string_init(&values)) return 0;
// init environment
tb_environment_ref_t environment = tb_environment_init();
if (environment)
{
// load variable
if (tb_environment_load(environment, name))
{
// make values
tb_bool_t is_first = tb_true;
tb_for_all_if (tb_char_t const*, value, environment, value)
{
// append separator
if (!is_first) tb_string_chrcat(&values, XM_OS_ENV_SEP);
else is_first = tb_false;
// append value
tb_string_cstrcat(&values, value);
}
}
// exit environment
tb_environment_exit(environment);
}
// save result
if (tb_string_size(&values)) lua_pushstring(lua, tb_string_cstr(&values));
else lua_pushnil(lua);
// exit values
tb_string_exit(&values);
// ok
return 1;
}
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