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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 dedecompress_file.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "dedecompress_file"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_lz4_decompress_file(lua_State* lua)
{
// check
tb_assert_and_check_return_val(lua, 0);
// get the file paths
tb_char_t const* srcpath = luaL_checkstring(lua, 1);
tb_char_t const* dstpath = luaL_checkstring(lua, 2);
tb_check_return_val(srcpath && dstpath, 0);
// init lz4 stream
xm_lz4_dstream_t* stream_lz4 = xm_lz4_dstream_init();
tb_check_return_val(stream_lz4, 0);
// do decompress
tb_bool_t ok = tb_false;
tb_stream_ref_t istream = tb_stream_init_from_file(srcpath, TB_FILE_MODE_RO);
tb_stream_ref_t ostream = tb_stream_init_from_file(dstpath, TB_FILE_MODE_RW | TB_FILE_MODE_CREAT | TB_FILE_MODE_TRUNC);
if (istream && ostream && tb_stream_open(istream) && tb_stream_open(ostream))
{
tb_bool_t write_ok = tb_false;
tb_byte_t idata[TB_STREAM_BLOCK_MAXN];
tb_byte_t odata[TB_STREAM_BLOCK_MAXN];
while (!tb_stream_beof(istream))
{
write_ok = tb_false;
tb_long_t ireal = (tb_long_t)tb_stream_read(istream, idata, sizeof(idata));
if (ireal > 0)
{
tb_long_t r = xm_lz4_dstream_write(stream_lz4, idata, ireal, tb_stream_beof(istream));
tb_assert_and_check_break(r >= 0);
tb_check_continue(r > 0);
tb_long_t oreal;
while ((oreal = xm_lz4_dstream_read(stream_lz4, odata, sizeof(odata))) > 0)
{
if (!tb_stream_bwrit(ostream, odata, oreal))
{
oreal = -1;
break;
}
}
tb_assert_and_check_break(oreal >= 0);
}
else break;
write_ok = tb_true;
}
if (tb_stream_beof(istream) && write_ok)
ok = tb_true;
}
// exit stream
if (istream)
{
tb_stream_exit(istream);
istream = tb_null;
}
if (ostream)
{
tb_stream_exit(ostream);
ostream = tb_null;
}
xm_lz4_dstream_exit(stream_lz4);
// ok?
lua_pushboolean(lua, ok);
return 1;
}
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