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/*
* Copyright (c) 2016-present, Facebook, Inc.
* All rights reserved.
*
* This source code is licensed under both the BSD-style license (found in the
* LICENSE file in the root directory of this source tree) and the GPLv2 (found
* in the COPYING file in the root directory of this source tree).
*/
#pragma once
#include "Options.h"
#include "Pzstd.h"
#include "utils/ScopeGuard.h"
#include <cstdio>
#include <string>
#include <cstdint>
#include <memory>
namespace pzstd {
inline bool check(std::string source, std::string decompressed) {
std::unique_ptr<std::uint8_t[]> sBuf(new std::uint8_t[1024]);
std::unique_ptr<std::uint8_t[]> dBuf(new std::uint8_t[1024]);
auto sFd = std::fopen(source.c_str(), "rb");
auto dFd = std::fopen(decompressed.c_str(), "rb");
auto guard = makeScopeGuard([&] {
std::fclose(sFd);
std::fclose(dFd);
});
size_t sRead, dRead;
do {
sRead = std::fread(sBuf.get(), 1, 1024, sFd);
dRead = std::fread(dBuf.get(), 1, 1024, dFd);
if (std::ferror(sFd) || std::ferror(dFd)) {
return false;
}
if (sRead != dRead) {
return false;
}
for (size_t i = 0; i < sRead; ++i) {
if (sBuf.get()[i] != dBuf.get()[i]) {
return false;
}
}
} while (sRead == 1024);
if (!std::feof(sFd) || !std::feof(dFd)) {
return false;
}
return true;
}
inline bool roundTrip(Options& options) {
if (options.inputFiles.size() != 1) {
return false;
}
std::string source = options.inputFiles.front();
std::string compressedFile = std::tmpnam(nullptr);
std::string decompressedFile = std::tmpnam(nullptr);
auto guard = makeScopeGuard([&] {
std::remove(compressedFile.c_str());
std::remove(decompressedFile.c_str());
});
{
options.outputFile = compressedFile;
options.decompress = false;
if (pzstdMain(options) != 0) {
return false;
}
}
{
options.decompress = true;
options.inputFiles.front() = compressedFile;
options.outputFile = decompressedFile;
if (pzstdMain(options) != 0) {
return false;
}
}
return check(source, decompressedFile);
}
}
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