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[pzstd] Make CLI compatible with zstd

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This commit is contained in:
Nick Terrell
2016-09-21 14:29:47 -07:00
parent 60038948e6
commit 254c5b1692
9 changed files with 1017 additions and 299 deletions
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48
contrib/pzstd/Options.h
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@ -14,47 +14,55 @@
#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::string inputFile;
std::vector<std::string> inputFiles;
std::string outputFile;
bool overwrite;
bool pzstdHeaders;
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,
const std::string& inputFile,
const std::string& outputFile,
bool overwrite,
bool pzstdHeaders)
: numThreads(numThreads),
maxWindowLog(maxWindowLog),
compressionLevel(compressionLevel),
decompress(decompress),
inputFile(inputFile),
outputFile(outputFile),
overwrite(overwrite),
pzstdHeaders(pzstdHeaders) {}
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) {}
bool parse(int argc, const char** argv);
Status parse(int argc, const char **argv);
ZSTD_parameters determineParameters() const {
ZSTD_parameters params = ZSTD_getParams(compressionLevel, 0, 0);
params.fParams.contentSizeFlag = 1;
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;
};
}