1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
/*!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 compress_file.c
*
*/
/* //////////////////////////////////////////////////////////////////////////////////////
* trace
*/
#define TB_TRACE_MODULE_NAME "compress_file"
#define TB_TRACE_MODULE_DEBUG (0)
/* //////////////////////////////////////////////////////////////////////////////////////
* includes
*/
#include "prefix.h"
/* //////////////////////////////////////////////////////////////////////////////////////
* implementation
*/
tb_int_t xm_lz4_compress_file(lua_State *lua) {
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_cstream_t *stream_lz4 = xm_lz4_cstream_init();
tb_check_return_val(stream_lz4, 0);
// do compress
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_cstream_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_cstream_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_cstream_exit(stream_lz4);
lua_pushboolean(lua, ok);
return 1;
}
|
