87 lines
2.1 KiB
C++
87 lines
2.1 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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* All rights reserved.
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*
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* This source code is licensed under both the BSD-style license (found in the
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* LICENSE file in the root directory of this source tree) and the GPLv2 (found
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* in the COPYING file in the root directory of this source tree).
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*/
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#pragma once
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#include "Options.h"
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#include "Pzstd.h"
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#include "utils/ScopeGuard.h"
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#include <cstdio>
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#include <string>
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#include <cstdint>
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#include <memory>
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namespace pzstd {
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inline bool check(std::string source, std::string decompressed) {
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std::unique_ptr<std::uint8_t[]> sBuf(new std::uint8_t[1024]);
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std::unique_ptr<std::uint8_t[]> dBuf(new std::uint8_t[1024]);
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auto sFd = std::fopen(source.c_str(), "rb");
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auto dFd = std::fopen(decompressed.c_str(), "rb");
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auto guard = makeScopeGuard([&] {
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std::fclose(sFd);
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std::fclose(dFd);
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});
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size_t sRead, dRead;
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do {
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sRead = std::fread(sBuf.get(), 1, 1024, sFd);
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dRead = std::fread(dBuf.get(), 1, 1024, dFd);
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if (std::ferror(sFd) || std::ferror(dFd)) {
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return false;
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}
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if (sRead != dRead) {
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return false;
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}
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for (size_t i = 0; i < sRead; ++i) {
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if (sBuf.get()[i] != dBuf.get()[i]) {
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return false;
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}
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}
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} while (sRead == 1024);
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if (!std::feof(sFd) || !std::feof(dFd)) {
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return false;
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}
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return true;
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}
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inline bool roundTrip(Options& options) {
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if (options.inputFiles.size() != 1) {
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return false;
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}
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std::string source = options.inputFiles.front();
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std::string compressedFile = std::tmpnam(nullptr);
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std::string decompressedFile = std::tmpnam(nullptr);
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auto guard = makeScopeGuard([&] {
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std::remove(compressedFile.c_str());
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std::remove(decompressedFile.c_str());
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});
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{
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options.outputFile = compressedFile;
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options.decompress = false;
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if (pzstdMain(options) != 0) {
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return false;
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}
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}
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{
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options.decompress = true;
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options.inputFiles.front() = compressedFile;
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options.outputFile = decompressedFile;
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if (pzstdMain(options) != 0) {
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return false;
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}
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}
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return check(source, decompressedFile);
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}
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}
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