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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
#define ZSTD_STATIC_LINKING_ONLY
#include "zstd.h"
#undef ZSTD_STATIC_LINKING_ONLY
#include <cstdint>
#include <string>
#include <vector>
namespace pzstd {
struct Options {
enum class WriteMode { Regular, Auto, Sparse };
unsigned numThreads;
unsigned maxWindowLog;
unsigned compressionLevel;
bool decompress;
std::vector<std::string> inputFiles;
std::string outputFile;
bool overwrite;
bool keepSource;
WriteMode writeMode;
bool checksum;
int verbosity;
enum class Status {
Success, // Successfully parsed options
Failure, // Failure to parse options
Message // Options specified to print a message (e.g. "-h")
};
Options();
Options(unsigned numThreads, unsigned maxWindowLog, unsigned compressionLevel,
bool decompress, std::vector<std::string> inputFiles,
std::string outputFile, bool overwrite, bool keepSource,
WriteMode writeMode, bool checksum, int verbosity)
: numThreads(numThreads), maxWindowLog(maxWindowLog),
compressionLevel(compressionLevel), decompress(decompress),
inputFiles(std::move(inputFiles)), outputFile(std::move(outputFile)),
overwrite(overwrite), keepSource(keepSource), writeMode(writeMode),
checksum(checksum), verbosity(verbosity) {}
Status parse(int argc, const char **argv);
ZSTD_parameters determineParameters() const {
ZSTD_parameters params = ZSTD_getParams(compressionLevel, 0, 0);
params.fParams.contentSizeFlag = 0;
params.fParams.checksumFlag = checksum;
if (maxWindowLog != 0 && params.cParams.windowLog > maxWindowLog) {
params.cParams.windowLog = maxWindowLog;
params.cParams = ZSTD_adjustCParams(params.cParams, 0, 0);
}
return params;
}
std::string getOutputFile(const std::string &inputFile) const;
};
}
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