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82 lines
3.2 KiB
C++
82 lines
3.2 KiB
C++
/*
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* Copyright (c) 2020, the SerenityOS developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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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/FileStream.h>
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static void decompress_file(Core::InputFileStream input_stream, Core::OutputFileStream output_stream)
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{
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auto gzip_stream = Compress::GzipDecompressor { input_stream };
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u8 buffer[4096];
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while (!gzip_stream.eof()) {
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const auto nread = gzip_stream.read({ buffer, sizeof(buffer) });
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output_stream.write_or_error({ buffer, nread });
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}
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input_stream.close();
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output_stream.close();
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}
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int main(int argc, char** argv)
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{
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Vector<const char*> 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(argc, argv);
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if (write_to_stdout)
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keep_input_files = true;
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for (StringView filename : filenames) {
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ASSERT(filename.ends_with(".gz"));
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const auto input_filename = filename;
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const auto output_filename = filename.substring_view(0, filename.length() - 3);
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auto input_stream_result = Core::InputFileStream::open(input_filename);
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if (write_to_stdout) {
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decompress_file(input_stream_result.value(), Core::OutputFileStream::stdout());
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} else {
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auto output_stream_result = Core::OutputFileStream::open(output_filename);
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decompress_file(input_stream_result.value(), output_stream_result.value());
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}
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if (!keep_input_files) {
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const auto retval = unlink(String { input_filename }.characters());
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ASSERT(retval == 0);
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}
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}
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}
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