/*************************************************************************
 *
 * HTCd - Copyright (C) 1998-2006 Henrik Rydberg
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef MREADH
#define MREADH

// These functions work with nonblocking pipes
// as well as normal devices, and does not produce
// any signals on pipe errors

#include <mt/mstring.h>
#include <unistd.h>
#include <fcntl.h>

class mread {
public:
  mread();
  mread(int f);

  void setfd(int f) { clear(); fd=f; }
  int getfd() const { return fd; }

  void setflag(int f) { fcntl(fd,F_SETFL,f); }
  int getflag() const { return fcntl(fd,F_GETFL,0); }

  // Basic, pipe-safe, normally non-blocking, reads
  void clear();
  int poll();
  int read(char* s,int n);
  void putback(const sref& s);

  // Buffered reads
  int readx(char* s,int n); // may timeout and return less than wanted
  int readln(char* s,int n);
  int readpara(char* s,int n);

private:
  int fd;
  mstring buf;
};

// All functions return number of bytes written, or -1 on error.
// Note that although ln and para continues to read until
// it finds a newline or a paragraph, it may read more than that.
// Use clear() to restore reading state

#endif