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8464da1439
`Stream` will be qualified as `AK::Stream` until we remove the `Core::Stream` namespace. `IODevice` now reuses the `SeekMode` that is defined by `SeekableStream`, since defining its own would require us to qualify it with `AK::SeekMode` everywhere.
62 lines
2.1 KiB
C++
62 lines
2.1 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <LibCompress/Gzip.h>
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#include <LibCore/ArgsParser.h>
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#include <LibCore/System.h>
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#include <LibMain/Main.h>
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#include <unistd.h>
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static ErrorOr<void> decompress_file(NonnullOwnPtr<Core::Stream::File> input_stream, AK::Stream& output_stream)
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{
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auto gzip_stream = Compress::GzipDecompressor { move(input_stream) };
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auto buffer = TRY(ByteBuffer::create_uninitialized(4096));
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while (!gzip_stream.is_eof()) {
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auto span = TRY(gzip_stream.read(buffer));
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TRY(output_stream.write_entire_buffer(span));
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}
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return {};
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}
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ErrorOr<int> serenity_main(Main::Arguments args)
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{
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Vector<StringView> filenames;
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bool keep_input_files { false };
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bool write_to_stdout { false };
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Core::ArgsParser args_parser;
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args_parser.add_option(keep_input_files, "Keep (don't delete) input files", "keep", 'k');
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args_parser.add_option(write_to_stdout, "Write to stdout, keep original files unchanged", "stdout", 'c');
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args_parser.add_positional_argument(filenames, "File to decompress", "FILE");
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args_parser.parse(args);
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if (write_to_stdout)
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keep_input_files = true;
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for (auto filename : filenames) {
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DeprecatedString input_filename;
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DeprecatedString output_filename;
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if (filename.ends_with(".gz"sv)) {
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input_filename = filename;
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output_filename = filename.substring_view(0, filename.length() - 3);
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} else {
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input_filename = DeprecatedString::formatted("{}.gz", filename);
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output_filename = filename;
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}
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auto input_stream_result = TRY(Core::Stream::File::open(input_filename, Core::Stream::OpenMode::Read));
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auto output_stream = write_to_stdout ? TRY(Core::Stream::File::standard_output()) : TRY(Core::Stream::File::open(output_filename, Core::Stream::OpenMode::Write));
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TRY(decompress_file(move(input_stream_result), *output_stream));
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if (!keep_input_files)
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TRY(Core::System::unlink(input_filename));
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}
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return 0;
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}
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