iostream_decls.h

/*
 *  Copyright (C) 2006  Helmut Grohne
 *
 *  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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 */

#ifndef LIBMUTH_IOSTREAM_DECLS_H
#define LIBMUTH_IOSTREAM_DECLS_H

#include <iostream>
#include "basescheduler_decls.h"

template<class C=char, class T=std::char_traits<C> >
                class BasicScheduledStreambuf
                : public std::basic_streambuf<C, T> {
        private:
                typedef C char_type;
                typedef T traits_type;
                typedef typename traits_type::int_type int_type;
                int fd;
                BaseScheduler &sched;
                std::ios_base::openmode mode;
                std::streamsize ibufsize;
                char_type *ibuf;
                char_type *obuf;
        protected:
                /* istreambuf */
                int_type underflow();
                int_type pbackfail(int_type ch);
                /* ostreambuf */
                int sync();
                int_type overflow(int_type ch=traits_type::eof());
#if 0
                std::streamsize xsputn(const char_type *str, std::streamsize n);
#endif
        public:
                BasicScheduledStreambuf(int f, BaseScheduler &s,
                                std::ios_base::openmode m = std::ios_base::in |
                                std::ios_base::out, std::streamsize insize=4096,
                                std::streamsize outsize=4096);
                /* TODO: avoid copying */
                ~BasicScheduledStreambuf();
                operator int() const;
};

template<class C=char, class T=std::char_traits<C> > class BasicScheduledIStream
                : public std::basic_istream<C, T> {
        private:
                BasicScheduledStreambuf<C, T> streambuf;
        public:
                BasicScheduledIStream(int f, BaseScheduler &s,
                                std::streamsize size=4096);
                operator int() const;
};

template<class C=char, class T=std::char_traits<C> > class BasicScheduledOStream
                : public std::basic_ostream<C, T> {
        private:
                BasicScheduledStreambuf<C, T> streambuf;
        public:
                BasicScheduledOStream(int f, BaseScheduler &s,
                                std::streamsize size=4096);
                operator int() const;
};

template<class C=char, class T=std::char_traits<C> >
                class BasicScheduledIOStream
                : public std::basic_iostream<C, T> {
        private:
                BasicScheduledStreambuf<C, T> streambuf;
        public:
                BasicScheduledIOStream(int f, BaseScheduler &s,
                                std::streamsize insize=4096,
                                std::streamsize outsize=4096);
                operator int() const;
};

typedef BasicScheduledStreambuf<> ScheduledStreambuf;
typedef BasicScheduledIStream<> ScheduledIStream;
typedef BasicScheduledOStream<> ScheduledOStream;
typedef BasicScheduledIOStream<> ScheduledIOStream;

#endif

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