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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 filelock_open.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "filelock_open"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
/*
* io.filelock_open(path)
*/
tb_int_t xm_io_filelock_open(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// get file path
tb_char_t const *path = luaL_checkstring(lua, 1);
tb_assert_and_check_return_val(path, 0);
// init file lock
tb_long_t tryn = 2;
tb_filelock_ref_t lock = tb_null;
while (!lock && tryn-- > 0) {
lock = tb_filelock_init_from_path(path,
tb_file_info(path, tb_null) ? TB_FILE_MODE_RW
: TB_FILE_MODE_RW | TB_FILE_MODE_CREAT);
}
if (lock) {
xm_lua_pushpointer(lua, (tb_pointer_t)lock);
} else {
lua_pushnil(lua);
}
return 1;
}
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