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/*!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, Xmake Open Source Community.
*
* @author ruki
* @file getenvs.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "getenvs"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
#if defined(TB_CONFIG_OS_WINDOWS) && !defined(TB_COMPILER_LIKE_UNIX)
# include <windows.h>
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* macros
*/
// the separator
#if defined(TB_CONFIG_OS_WINDOWS) && !defined(TB_COMPILER_LIKE_UNIX)
# define XM_OS_ENV_SEP ';'
#else
# define XM_OS_ENV_SEP ':'
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* globals
*/
// the user environment
#if !defined(TB_CONFIG_OS_WINDOWS) || defined(TB_COMPILER_LIKE_UNIX)
extern tb_char_t** environ;
#endif
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_os_getenvs(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
// init table
lua_newtable(lua);
#if defined(TB_CONFIG_OS_WINDOWS) && !defined(TB_COMPILER_LIKE_UNIX)
tb_wchar_t const* p = (tb_wchar_t const*)GetEnvironmentStringsW();
if (p)
{
tb_int_t i = 1;
tb_char_t* data = tb_null;
tb_size_t maxn = 0;
tb_char_t line[TB_PATH_MAXN];
tb_size_t n = 0;
while (*p)
{
n = tb_wcslen(p);
if (n + 1 < tb_arrayn(line))
{
if (tb_wtoa(line, p, tb_arrayn(line)) >= 0)
{
lua_pushstring(lua, line);
lua_rawseti(lua, -2, i++);
}
}
else
{
if (!data)
{
maxn = n + 1;
data = (tb_char_t*)tb_malloc(maxn);
}
else if (n >= maxn)
{
maxn = n + TB_PATH_MAXN + 1;
data = (tb_char_t*)tb_ralloc(data, maxn);
}
tb_assert_and_check_break(data);
if (tb_wtoa(data, p, maxn) >= 0)
{
lua_pushstring(lua, data);
lua_rawseti(lua, -2, i++);
}
}
p += n + 1;
}
if (data && data != line) tb_free(data);
data = tb_null;
}
#else
tb_char_t const** p = (tb_char_t const**)environ;
if (p)
{
tb_int_t i = 1;
tb_size_t n = 0;
while (*p)
{
n = tb_strlen(*p);
if (n)
{
lua_pushstring(lua, *p);
lua_rawseti(lua, -2, i++);
}
p++;
}
}
#endif
// ok
return 1;
}
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