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// Copyright (C) 1999,2000 Bruce Guenter <bruceg@em.ca>
//
// 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 FDBUF__H__
#define FDBUF__H__
#include "config.h"
#include <string.h>
#include <fcntl.h>
#ifdef _REENTRANT
#include <pthread.h>
#endif
#ifndef FDBUF_SIZE
#define FDBUF_SIZE 4096
#endif
class mystring;
class fdbuf
{
public:
enum flagbits { flag_eof=1, flag_error=2, flag_closed=4 };
fdbuf(int fdesc, bool dc, unsigned bufsz = FDBUF_SIZE);
~fdbuf();
bool error() const;
bool closed() const;
bool close();
#ifdef _REENTRANT
void lock() { pthread_mutex_lock(&mutex); }
void unlock() { pthread_mutex_unlock(&mutex); }
#else
#ifdef FDBUF_MUTEX_DEBUG
void lock();
void unlock();
#else
void lock() { }
void unlock() { }
#endif
#endif
protected:
char* const buf;
unsigned buflength; // Length of the data in the buffer
unsigned bufstart; // Start of the data in the buffer
unsigned offset; // Current file read/write offset
int errnum; // Saved error flag
unsigned flags; // Status flags
const unsigned bufsize; // Total buffer size
const int fd;
const bool do_close; // True to close on destructor
#ifdef _REENTRANT
pthread_mutex_t mutex;
#else
#ifdef FDBUF_MUTEX_DEBUG
unsigned mutex;
#endif
#endif
};
#include "fdbuf/fdibuf.h"
#include "fdbuf/fdobuf.h"
bool fdbuf_copy(fdibuf&, fdobuf&, bool noflush = false);
#endif // FDBUF__H__
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