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/* Copyright 2019 Ján Sučan <jan@jansucan.com>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef OPTIONS_H
#define OPTIONS_H
#include <cstdint>
#include <filesystem>
class OptionError : public std::runtime_error
{
public:
explicit OptionError(const std::string &message)
: std::runtime_error(message)
{
}
};
class Options
{
friend class OptionParser;
public:
static const int DEFAULT_SECTOR_SIZE{512};
static const int DEFAULT_BUFFER_SIZE{4 * 1024 * 1024};
Options();
virtual ~Options() = default;
uint32_t getSectorSize() const;
uint32_t getBufferSize() const;
private:
uint32_t sector_size;
uint32_t buffer_size;
};
class OptionsBackup : public Options
{
friend class OptionParser;
public:
virtual ~OptionsBackup() = default;
std::filesystem::path getInFilePath() const;
std::filesystem::path getRefFilePath() const;
std::filesystem::path getOutFilePath() const;
private:
std::filesystem::path in_file_path;
std::filesystem::path ref_file_path;
std::filesystem::path out_file_path;
};
class OptionsRestore : public Options
{
friend class OptionParser;
public:
virtual ~OptionsRestore() = default;
std::filesystem::path getInFilePath() const;
std::filesystem::path getOutFilePath() const;
private:
std::filesystem::path in_file_path;
std::filesystem::path out_file_path;
};
class OptionParser
{
public:
static void printUsage();
static bool isHelp(int argc, char **argv);
static bool isBackup(int argc, char **argv);
static bool isRestore(int argc, char **argv);
;
static OptionsBackup parseBackup(int argc, char **argv);
static OptionsRestore parseRestore(int argc, char **argv);
private:
static const size_t MAX_OPERATION_NAME_LENGTH{8};
static bool isOperation(int argc, char **argv,
std::string_view operationName);
static int parse_unsigned(const char *const arg, uint32_t *const value);
static void parse_common(int *const argc, char ***const argv,
Options &opts);
static const char *next_arg(char ***const argv);
};
#endif /* OPTIONS_H */
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