OptionsParser.h

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#ifndef AMPGEN_OPTIONSPARSER_H
#define AMPGEN_OPTIONSPARSER_H
 
#include <iostream>
#include <vector>
#include <map>
#include <string>
#include <utility>
#include <functional>
 
namespace AmpGen
{
 
  class OptionsParser
  {
  public:
    typedef std::map<std::string, std::vector<std::string>>::const_iterator const_iterator;
    typedef std::map<std::string, std::vector<std::string>>::iterator iterator;
    
    static OptionsParser* getMe();
    static bool printHelp();
    static void setArgs( int argc, char** argv, const std::string& description="" );
    static void setArg( const std::string& arg ); 
    void setQuiet(); 
    void addArg( const std::string& arg );
    void setCommandLineArgs( int argc, char** argv, const std::string& description =""); 
    void import( const std::string& fName );
    iterator find( const std::string& name );
    iterator begin();
    iterator end();
    const_iterator begin() const;
    const_iterator end() const;
    std::vector<std::vector<std::string>> getInputOrdered() const; 
  private:
    struct AllowedArgument { 
      std::string m_name;
      std::string m_helpString; 
    }; 
    std::vector<std::string>                          m_allowedArguments; 
    std::vector<std::string>                          m_orderedKeys; 
    std::map<std::string, std::vector<std::string>>   m_parsedLines; 
    std::map<std::string, std::function<void(std::vector<std::string>)> > m_keywords;
    bool m_printHelp = {false};  
    bool m_quiet     = {false}; 
    static OptionsParser* gOptionsParser;
    
    OptionsParser();
    bool ignoreThisLine( const std::string& line );
    void readStream( std::istream& is );
    std::vector<std::string> makeParsedStrings( const std::string& line, int& braceDepth ) const;
    void addArg(const std::vector<std::string>& tokens );
  
  };
} // namespace AmpGen
#endif