/*
**      SWISH++
**      conf_string.h
**
**      Copyright (C) 1998  Paul J. Lucas
**
**      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 2 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, write to the Free Software
**      Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef conf_string_H
#define conf_string_H

// standard
#include <string>

// local
#include "conf_var.h"

//*****************************************************************************
//
// SYNOPSIS
//
        template<> class conf<std::string> : public conf_var
//
// DESCRIPTION
//
//      A conf<std::string> is-a conf_var for containing a configuration
//      variable string value.
//
//*****************************************************************************
{
public:
    int length() const                  { return value_.length(); }
    int size() const                    { return value_.size(); }
    operator char const*() const        { return value_.c_str(); }

    friend bool
    operator==( conf<std::string> const &i, conf<std::string> const &j ) {
        return i.value_ == j.value_;
    }
    friend bool
    operator!=( conf<std::string> const &i, conf<std::string> const &j ) {
        return !( i == j );
    }

    friend bool operator==( conf<std::string> const &i, std::string const &s ) {
        return i.value_ == s;
    }
    friend bool operator!=( conf<std::string> const &i, std::string const &s ) {
        return !( i == s );
    }

    friend bool operator==( std::string const &s, conf<std::string> const &i ) {
        return i == s;
    }
    friend bool operator!=( std::string const &s, conf<std::string> const &i ) {
        return i != s;
    }

    friend bool operator==( conf<std::string> const &i, char const *s ) {
        return i.value_ == s;
    }
    friend bool operator!=( conf<std::string> const &i, char const *s ) {
        return !( i == s );
    }

    friend bool operator==( char const *s, conf<std::string> const &i ) {
        return i == s;
    }
    friend bool operator!=( char const *s, conf<std::string> const &i ) {
        return i != s;
    }
protected:
    conf( char const *name, char const *default_value = "" );
    CONF_VAR_ASSIGN_OPS( conf<std::string> )

    conf<std::string>& operator+=( std::string const &s ) {
        value_ += s;
        return *this;
    }
    conf<std::string>& operator+=( char const *s ) {
        value_ += s;
        return *this;
    }

    virtual void        parse_value( char *line );
private:
    std::string const   default_value_;
    std::string         value_;

    virtual void        reset()         { value_ = default_value_; }
};

#define CONF_STRING_ASSIGN_OPS(T)           \
    T& operator=( std::string const &s ) {  \
        conf<std::string>::operator=( s );  \
        return *this;                       \
    }                                       \
    T& operator=( char const *s ) {         \
        conf<std::string>::operator=( s );  \
        return *this;                       \
    }                                       \
    T& operator+=( std::string const &s ) { \
        conf<std::string>::operator+=( s ); \
        return *this;                       \
    }                                       \
    T& operator+=( char const *s ) {        \
        conf<std::string>::operator+=( s ); \
        return *this;                       \
    }

#endif  /* conf_string_H */
/* vim:set et sw=4 ts=4: */