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
|
/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCompress/Gzip.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/FileStream.h>
#include <unistd.h>
static bool decompress_file(Buffered<Core::InputFileStream>& input_stream, Buffered<Core::OutputFileStream>& output_stream)
{
auto gzip_stream = Compress::GzipDecompressor { input_stream };
u8 buffer[4096];
while (!gzip_stream.has_any_error() && !gzip_stream.unreliable_eof()) {
const auto nread = gzip_stream.read({ buffer, sizeof(buffer) });
output_stream.write_or_error({ buffer, nread });
}
return !gzip_stream.handle_any_error();
}
int main(int argc, char** argv)
{
Vector<String> filenames;
bool keep_input_files { false };
bool write_to_stdout { false };
Core::ArgsParser args_parser;
args_parser.add_option(keep_input_files, "Keep (don't delete) input files", "keep", 'k');
args_parser.add_option(write_to_stdout, "Write to stdout, keep original files unchanged", "stdout", 'c');
args_parser.add_positional_argument(filenames, "File to decompress", "FILE");
args_parser.parse(argc, argv);
if (write_to_stdout)
keep_input_files = true;
for (auto filename : filenames) {
if (!filename.ends_with(".gz"))
filename = String::formatted("{}.gz", filename);
const auto input_filename = filename;
const auto output_filename = filename.substring_view(0, filename.length() - 3);
auto input_stream_result = Core::InputFileStream::open_buffered(input_filename);
if (input_stream_result.is_error()) {
warnln("Failed opening input file for reading: {}", input_stream_result.error());
return 1;
}
auto success = false;
if (write_to_stdout) {
auto stdout = Core::OutputFileStream::stdout_buffered();
success = decompress_file(input_stream_result.value(), stdout);
} else {
auto output_stream_result = Core::OutputFileStream::open_buffered(output_filename);
if (output_stream_result.is_error()) {
warnln("Failed opening output file for writing: {}", output_stream_result.error());
return 1;
}
success = decompress_file(input_stream_result.value(), output_stream_result.value());
}
if (!success) {
warnln("Failed gzip decompressing input file");
return 1;
}
if (!keep_input_files) {
const auto retval = unlink(String { input_filename }.characters());
if (retval != 0) {
warnln("Failed removing input file");
return 1;
}
}
}
return 0;
}
|
