| 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 | #define ZSTD_STATIC_LINKING_ONLY |
| 12 | #define ZSTD_DISABLE_DEPRECATE_WARNINGS /* No deprecation warnings, pzstd itself is deprecated |
| 13 | * and uses deprecated functions |
| 14 | */ |
| 15 | #include "zstd.h" |
| 16 | #undef ZSTD_STATIC_LINKING_ONLY |
| 17 | |
| 18 | #include <cstdint> |
| 19 | #include <string> |
| 20 | #include <vector> |
| 21 | |
| 22 | namespace pzstd { |
| 23 | |
| 24 | struct Options { |
| 25 | enum class WriteMode { Regular, Auto, Sparse }; |
| 26 | |
| 27 | unsigned numThreads; |
| 28 | unsigned maxWindowLog; |
| 29 | unsigned compressionLevel; |
| 30 | bool decompress; |
| 31 | std::vector<std::string> inputFiles; |
| 32 | std::string outputFile; |
| 33 | bool overwrite; |
| 34 | bool keepSource; |
| 35 | WriteMode writeMode; |
| 36 | bool checksum; |
| 37 | int verbosity; |
| 38 | |
| 39 | enum class Status { |
| 40 | Success, // Successfully parsed options |
| 41 | Failure, // Failure to parse options |
| 42 | Message // Options specified to print a message (e.g. "-h") |
| 43 | }; |
| 44 | |
| 45 | Options(); |
| 46 | Options(unsigned numThreads, unsigned maxWindowLog, unsigned compressionLevel, |
| 47 | bool decompress, std::vector<std::string> inputFiles, |
| 48 | std::string outputFile, bool overwrite, bool keepSource, |
| 49 | WriteMode writeMode, bool checksum, int verbosity) |
| 50 | : numThreads(numThreads), maxWindowLog(maxWindowLog), |
| 51 | compressionLevel(compressionLevel), decompress(decompress), |
| 52 | inputFiles(std::move(inputFiles)), outputFile(std::move(outputFile)), |
| 53 | overwrite(overwrite), keepSource(keepSource), writeMode(writeMode), |
| 54 | checksum(checksum), verbosity(verbosity) {} |
| 55 | |
| 56 | Status parse(int argc, const char **argv); |
| 57 | |
| 58 | ZSTD_parameters determineParameters() const { |
| 59 | ZSTD_parameters params = ZSTD_getParams(compressionLevel, 0, 0); |
| 60 | params.fParams.contentSizeFlag = 0; |
| 61 | params.fParams.checksumFlag = checksum; |
| 62 | if (maxWindowLog != 0 && params.cParams.windowLog > maxWindowLog) { |
| 63 | params.cParams.windowLog = maxWindowLog; |
| 64 | params.cParams = ZSTD_adjustCParams(params.cParams, 0, 0); |
| 65 | } |
| 66 | return params; |
| 67 | } |
| 68 | |
| 69 | std::string getOutputFile(const std::string &inputFile) const; |
| 70 | }; |
| 71 | } |