commandline.h

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#ifndef TF_COMMANDLINE_H_VERSION

#define TF_COMMANDLINE_H_VERSION \
  "TF_COMMANDLINE_H   V1.5"

#include<tfxx/error.h>
#include<iostream>
#include<string>
#include<cstdlib>

namespace tfxx {

namespace cmdline { 

  enum Eopt_arg_mode 
  {
    arg_no=0, 
    arg_yes=1, 
    arg_opt=2 
  };

  struct Declare {
    const char* opt_string;
    Eopt_arg_mode opt_arg_mode;
    const char* arg_default;
  };

class Commandline {
  public:
    Commandline(int& iargc, char** argv, Declare* declarations);
    ~Commandline() { delete[] Mresult; }

    bool optset(const int& iopt) const
    { check_index(iopt); return(Mresult[iopt].opt_set); }
    std::string string_arg(const int& iopt) const
    { check_index(iopt); return(Mresult[iopt].arg); }
    int int_arg(const int& iopt) const
    { check_index(iopt); return(atoi(Mresult[iopt].arg.c_str())); }
    float float_arg(const int& iopt) const
    { check_index(iopt); return(float(atof(Mresult[iopt].arg.c_str()))); }
    double double_arg(const int& iopt) const
    { check_index(iopt); return(atof(Mresult[iopt].arg.c_str())); }
    long long_arg(const int& iopt) const
    { check_index(iopt); return(atol(Mresult[iopt].arg.c_str())); }
    bool bool_arg(const int& iopt) const
    { check_index(iopt); return(bool(atoi(Mresult[iopt].arg.c_str()))); }

    bool extra() const
    { return(Moptind<Miargc); }
    char* next()
    { if (Moptind<Miargc) {return(Margv[Moptind++]);} else {return(NULL);} }
  private:
    void check_index(const int& iopt) const
    {
      if ((iopt < 0) || (iopt >= Mnopt))
      {
        std::cerr << "Commandline: illegal option index '" 
             << iopt << "' on query" << std::endl;
        TFXX_abort("bailing out...");
      }
    }

    struct Result {
      bool opt_set;
      std::string arg;
    };

    Result* Mresult; 
    int Mnopt;
    int Miargc;
    char** Margv;
    int Moptind;
};

} // namespace cmdline
 
} // namespace tfxx
 
#endif // TF_COMMANDLINE_H_
 
/* ----- END OF commandline.h ----- */