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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibCompress/Gzip.h>
#include <LibCore/ArgsParser.h>
#include <LibCore/File.h>
#include <LibCore/System.h>
#include <LibMain/Main.h>
#include <unistd.h>
static ErrorOr<void> decompress_file(NonnullOwnPtr<Core::File> input_stream, Stream& output_stream)
{
auto gzip_stream = Compress::GzipDecompressor { move(input_stream) };
auto buffer = TRY(ByteBuffer::create_uninitialized(4096));
while (!gzip_stream.is_eof()) {
auto span = TRY(gzip_stream.read(buffer));
TRY(output_stream.write_entire_buffer(span));
}
return {};
}
ErrorOr<int> serenity_main(Main::Arguments args)
{
Vector<StringView> 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(args);
if (write_to_stdout)
keep_input_files = true;
for (auto filename : filenames) {
DeprecatedString input_filename;
DeprecatedString output_filename;
if (filename.ends_with(".gz"sv)) {
input_filename = filename;
output_filename = filename.substring_view(0, filename.length() - 3);
} else {
input_filename = DeprecatedString::formatted("{}.gz", filename);
output_filename = filename;
}
auto input_stream_result = TRY(Core::File::open(input_filename, Core::File::OpenMode::Read));
auto output_stream = write_to_stdout ? TRY(Core::File::standard_output()) : TRY(Core::File::open(output_filename, Core::File::OpenMode::Write));
TRY(decompress_file(move(input_stream_result), *output_stream));
if (!keep_input_files)
TRY(Core::System::unlink(input_filename));
}
return 0;
}
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