| 1 | /* |
| 2 | * Copyright (c) Meta Platforms, Inc. and affiliates. |
| 3 | * All rights reserved. |
| 4 | * |
| 5 | * This source code is licensed under both the BSD-style license (found in the |
| 6 | * LICENSE file in the root directory of this source tree) and the GPLv2 (found |
| 7 | * in the COPYING file in the root directory of this source tree). |
| 8 | */ |
| 9 | #pragma once |
| 10 | |
| 11 | #include "Options.h" |
| 12 | #include "Pzstd.h" |
| 13 | #include "utils/ScopeGuard.h" |
| 14 | |
| 15 | #include <cstdio> |
| 16 | #include <string> |
| 17 | #include <cstdint> |
| 18 | #include <memory> |
| 19 | |
| 20 | namespace pzstd { |
| 21 | |
| 22 | inline bool check(std::string source, std::string decompressed) { |
| 23 | std::unique_ptr<std::uint8_t[]> sBuf(new std::uint8_t[1024]); |
| 24 | std::unique_ptr<std::uint8_t[]> dBuf(new std::uint8_t[1024]); |
| 25 | |
| 26 | auto sFd = std::fopen(source.c_str(), "rb"); |
| 27 | auto dFd = std::fopen(decompressed.c_str(), "rb"); |
| 28 | auto guard = makeScopeGuard([&] { |
| 29 | std::fclose(sFd); |
| 30 | std::fclose(dFd); |
| 31 | }); |
| 32 | |
| 33 | size_t sRead, dRead; |
| 34 | |
| 35 | do { |
| 36 | sRead = std::fread(sBuf.get(), 1, 1024, sFd); |
| 37 | dRead = std::fread(dBuf.get(), 1, 1024, dFd); |
| 38 | if (std::ferror(sFd) || std::ferror(dFd)) { |
| 39 | return false; |
| 40 | } |
| 41 | if (sRead != dRead) { |
| 42 | return false; |
| 43 | } |
| 44 | |
| 45 | for (size_t i = 0; i < sRead; ++i) { |
| 46 | if (sBuf.get()[i] != dBuf.get()[i]) { |
| 47 | return false; |
| 48 | } |
| 49 | } |
| 50 | } while (sRead == 1024); |
| 51 | if (!std::feof(sFd) || !std::feof(dFd)) { |
| 52 | return false; |
| 53 | } |
| 54 | return true; |
| 55 | } |
| 56 | |
| 57 | inline bool roundTrip(Options& options) { |
| 58 | if (options.inputFiles.size() != 1) { |
| 59 | return false; |
| 60 | } |
| 61 | std::string source = options.inputFiles.front(); |
| 62 | std::string compressedFile = std::tmpnam(nullptr); |
| 63 | std::string decompressedFile = std::tmpnam(nullptr); |
| 64 | auto guard = makeScopeGuard([&] { |
| 65 | std::remove(compressedFile.c_str()); |
| 66 | std::remove(decompressedFile.c_str()); |
| 67 | }); |
| 68 | |
| 69 | { |
| 70 | options.outputFile = compressedFile; |
| 71 | options.decompress = false; |
| 72 | if (pzstdMain(options) != 0) { |
| 73 | return false; |
| 74 | } |
| 75 | } |
| 76 | { |
| 77 | options.decompress = true; |
| 78 | options.inputFiles.front() = compressedFile; |
| 79 | options.outputFile = decompressedFile; |
| 80 | if (pzstdMain(options) != 0) { |
| 81 | return false; |
| 82 | } |
| 83 | } |
| 84 | return check(source, decompressedFile); |
| 85 | } |
| 86 | } |