#ifndef CHECKVPW__CGI_ARGS__H__

#define CHECKVPW__CGI_ARGS__H__

#include "mystring/mystring.h"

class CGIArgs 

{

private:

  struct arg

  {

    arg* next;

    const mystring var;

    const mystring val;

    arg(mystring r, mystring l)

      : next(0), var(r), val(l)

      {

      }

    ~arg()

      {

	delete next;

      }

  };

  arg* head;

  arg* tail;

  unsigned argc;

  mystring errstr;

protected:

  void init();

  void append(mystring, mystring);

public:

  CGIArgs() : head(0), tail(0), argc(0)

    {

      init();

    }

  ~CGIArgs();

  bool error() const 

    {

      return !errstr.empty();

    }

  mystring errorstr() const

    {

      return errstr;

    }

  bool exists(mystring) const;

  mystring get(mystring var, mystring dflt = 0) const;

  mystring operator[](mystring var) const

    {

      return get(var);

    }

};

#endif