argvparser.h

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//    MemoryAccessor - A tool for accessing /proc/PID/mem
//    Copyright (C) 2024  zloymish
//
//    This program is free software: you can redistribute it and/or modify
//    it under the terms of the GNU General Public License as published by
//    the Free Software Foundation, either version 3 of the License, or
//    (at your option) any later version.
//
//    This program is distributed in the hope that it will be useful,
//    but WITHOUT ANY WARRANTY; without even the implied warranty of
//    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
//    GNU General Public License for more details.
//
//    You should have received a copy of the GNU General Public License
//    along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
#ifndef MEMORYACCESSOR_SRC_ARGVPARSER_H_
#define MEMORYACCESSOR_SRC_ARGVPARSER_H_
 
#include <array>
#include <map>
#include <string>
#include <vector>
 
#include "console.h"
 
class ArgvParser {
public:
  explicit ArgvParser(Console &console) noexcept : console_(console) {}
 
  void ParseArgv(const int &argc, char **argv) noexcept;
 
private:
  using KeyFuncP = void (ArgvParser::*)(
      const int &argc, char **argv); 
 
  void Usage() const noexcept;
  void PrintErrPrefix() const noexcept;
  void TypeHelp() const noexcept;
  void ArgReq(const std::string &key) const noexcept;
  void ArgUnkn(const std::string &key) const noexcept;
  void FileNotEx(const std::string &path) const noexcept;
  void FileErr(const std::string &path) const noexcept;
 
  void KeyHelp(const int &argc, char **argv) noexcept;
  void KeyCommand(const int &argc, char **argv) noexcept;
  void KeyFile(const int &argc, char **argv) noexcept;
 
  Console &console_; 
  const std::vector<std::array<std::string, 2>> kKeyManuals{
      {"--help", "show help"},
      {"--command COMMAND", "do command"},
      {"--file FILE", "do commands from file"},
  }; 
  const std::map<std::string, KeyFuncP> kKeys{
      {"--help", &ArgvParser::KeyHelp},
      {"--command", &ArgvParser::KeyCommand},
      {"--file", &ArgvParser::KeyFile},
  }; 
};
 
#endif // MEMORYACCESSOR_SRC_ARGVPARSER_H_