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LibCompress: Add LibCompress

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For now this only contains DEFLATE, and a very simple Zlib
Eventually GZip, etc. can go here as well.
This commit is contained in:
stelar7 2020-08-01 22:01:39 +02:00 • committed by Andreas Kling
parent 567845c480
commit 98e18d7339
9 changed files with 764 additions and 1 deletions
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103
Userland/test-compress.cpp Normal file
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/*
* Copyright (c) 2020, the SerenityOS developers.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <LibCompress/Deflate.h>
#include <LibCompress/Zlib.h>
#include <LibCore/ArgsParser.h>
auto main(int argc, char** argv) -> int
{
const char* mode = nullptr;
const char* type = nullptr;
Core::ArgsParser parser;
parser.add_positional_argument(type, "Type of algorithm to apply (Only Zlib and DEFLATE is present at the moment)", "type", Core::ArgsParser::Required::No);
parser.add_positional_argument(mode, "Mode to operate in (compress|decompress; Only decompress is valid at the moment)", "mode", Core::ArgsParser::Required::No);
parser.parse(argc, argv);
if (type == nullptr) {
type = "deflate";
}
if (mode == nullptr) {
mode = "decompress";
}
StringView mode_sv { mode };
StringView type_sv { type };
if (mode_sv == "decompress") {
if (type_sv == "deflate") {
// Deflated bytes for the string "This is a simple text file :)"
u8 data_bytes[] = {
0x0B, 0xC9, 0xC8, 0x2C,
0x56, 0x00, 0xA2, 0x44,
0x85, 0xE2, 0xCC, 0xDC,
0x82, 0x9C, 0x54, 0x85,
0x92, 0xD4, 0x8A, 0x12,
0x85, 0xB4, 0x4C, 0x20,
0xCB, 0x4A, 0x13, 0x00
};
auto deflater = Compress::Deflate({ data_bytes, 4 * 7 });
auto deflated = deflater.decompress();
auto decompressed = String((const char*)deflated.data(), deflated.size());
if (decompressed.equals_ignoring_case("This is a simple text file :)")) {
printf("Test PASSED");
return 0;
} else {
printf("Test FAILED");
return 1;
}
}
if (type_sv == "zlib") {
// zlib bytes for the string "This is a simple text file :)"
u8 data_bytes[] = {
0x78, 0x01, 0x01, 0x1D, 0x00, 0xE2, 0xFF, 0x54,
0x68, 0x69, 0x73, 0x20, 0x69, 0x73, 0x20, 0x61,
0x20, 0x73, 0x69, 0x6D, 0x70, 0x6C, 0x65, 0x20,
0x74, 0x65, 0x78, 0x74, 0x20, 0x66, 0x69, 0x6C,
0x65, 0x20, 0x3A, 0x29, 0x99, 0x5E, 0x09, 0xE8
};
auto deflater = Compress::Zlib({ data_bytes, 8 * 5 });
auto deflated = deflater.decompress();
auto decompressed = String((const char*)deflated.data(), deflated.size());
if (decompressed.equals_ignoring_case("This is a simple text file :)")) {
printf("Test PASSED");
return 0;
} else {
printf("Test FAILED");
return 1;
}
}
}
printf("Unknown arguments passed to test!");
return 1;
}