mirror of
https://github.com/RGBCube/serenity
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8bbb7e25e6
Previously, the implementation would produce one Vector<u8> which would contain the whole decompressed data. That can be a lot and even exhaust memory. With these changes it is still necessary to store the whole input data in one piece (I am working on this next,) but the output can be read block by block. (That's not optimal either because blocks can be arbitrarily large, but it's good for now.)
102 lines
4 KiB
C++
102 lines
4 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/Deflate.h>
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#include <LibCompress/Zlib.h>
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#include <LibCore/ArgsParser.h>
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auto main(int argc, char** argv) -> int
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{
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const char* mode = nullptr;
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const char* type = nullptr;
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Core::ArgsParser parser;
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parser.add_positional_argument(type, "Type of algorithm to apply (Only Zlib and DEFLATE is present at the moment)", "type", Core::ArgsParser::Required::No);
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parser.add_positional_argument(mode, "Mode to operate in (compress|decompress; Only decompress is valid at the moment)", "mode", Core::ArgsParser::Required::No);
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parser.parse(argc, argv);
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if (type == nullptr) {
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type = "deflate";
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}
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if (mode == nullptr) {
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mode = "decompress";
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}
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StringView mode_sv { mode };
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StringView type_sv { type };
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if (mode_sv == "decompress") {
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if (type_sv == "deflate") {
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// Deflated bytes for the string "This is a simple text file :)"
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u8 data_bytes[] = {
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0x0B, 0xC9, 0xC8, 0x2C,
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0x56, 0x00, 0xA2, 0x44,
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0x85, 0xE2, 0xCC, 0xDC,
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0x82, 0x9C, 0x54, 0x85,
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0x92, 0xD4, 0x8A, 0x12,
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0x85, 0xB4, 0x4C, 0x20,
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0xCB, 0x4A, 0x13, 0x00
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};
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auto deflated = Compress::DeflateStream::decompress_all({ data_bytes, 4 * 7 });
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auto decompressed = String((const char*)deflated.data(), deflated.size());
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if (decompressed.equals_ignoring_case("This is a simple text file :)")) {
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printf("Test PASSED");
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return 0;
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} else {
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printf("Test FAILED");
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return 1;
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}
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}
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if (type_sv == "zlib") {
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// zlib bytes for the string "This is a simple text file :)"
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u8 data_bytes[] = {
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0x78, 0x01, 0x01, 0x1D, 0x00, 0xE2, 0xFF, 0x54,
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0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61,
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0x20, 0x73, 0x69, 0x6D, 0x70, 0x6C, 0x65, 0x20,
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0x74, 0x65, 0x78, 0x74, 0x20, 0x66, 0x69, 0x6C,
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0x65, 0x20, 0x3A, 0x29, 0x99, 0x5E, 0x09, 0xE8
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};
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auto deflater = Compress::Zlib({ data_bytes, 8 * 5 });
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auto deflated = deflater.decompress();
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auto decompressed = String((const char*)deflated.data(), deflated.size());
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if (decompressed.equals_ignoring_case("This is a simple text file :)")) {
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printf("Test PASSED");
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return 0;
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} else {
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printf("Test FAILED");
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return 1;
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}
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}
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}
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printf("Unknown arguments passed to test!");
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return 1;
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}
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