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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 OpportunityLiu, ruki
* @file file_flush.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "file_flush"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* private implementation
*/
static tb_bool_t xm_io_std_flush_impl(xm_io_file_t *file) {
tb_assert_and_check_return_val(xm_io_file_is_std(file), tb_false);
return (file->u.std_ref != tb_stdfile_input()) ? tb_stdfile_flush(file->u.std_ref) : tb_false;
}
static tb_bool_t xm_io_file_flush_impl(xm_io_file_t *file) {
tb_assert_and_check_return_val(xm_io_file_is_file(file), tb_false);
#ifdef TB_CONFIG_OS_WINDOWS
// write cached data first
tb_byte_t const *odata = tb_buffer_data(&file->wcache);
tb_size_t osize = tb_buffer_size(&file->wcache);
if (odata && osize) {
if (!tb_stream_bwrit(file->u.file_ref, odata, osize))
return tb_false;
tb_buffer_clear(&file->wcache);
}
#endif
return tb_stream_sync(file->u.file_ref, tb_false);
}
/* //////////////////////////////////////////////////////////////////////////////////////
* interfaces
*/
// io.file_flush(file)
tb_int_t xm_io_file_flush(lua_State *lua) {
tb_assert_and_check_return_val(lua, 0);
// is user data?
if (!lua_isuserdata(lua, 1)) {
xm_io_return_error(lua, "flush(invalid file)!");
}
// get file
xm_io_file_t *file = (xm_io_file_t *)lua_touserdata(lua, 1);
tb_check_return_val(file, 0);
// flush file
tb_bool_t ok = xm_io_file_is_file(file) ? xm_io_file_flush_impl(file) : xm_io_std_flush_impl(file);
if (ok) {
lua_pushboolean(lua, tb_true);
return 1;
} else {
xm_io_return_error(lua, "failed to flush file");
}
}
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