stream.h 2.71 KB
/* GNU mailutils - a suite of utilities for electronic mail
   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Library Public License as published by
   the Free Software Foundation; either version 2, 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 Library General Public License for more details.

   You should have received a copy of the GNU Library General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */

#ifndef _MAILUTILS_STREAM_H
# define _MAILUTILS_STREAM_H

#include <mailutils/base.h>
#include <sys/types.h>

__MAILUTILS_BEGIN_DECLS

#define MU_STREAM_READ	   0x00000001
#define MU_STREAM_WRITE	   0x00000002
#define MU_STREAM_RDWR     (MU_STREAM_READ|MU_STREAM_WRITE)
#define MU_STREAM_APPEND   0x00000004
#define MU_STREAM_CREAT	   0x00000008
#define MU_STREAM_NONBLOCK 0x00000010

enum stream_whence
{
  MU_STREAM_WHENCE_SET,
  MU_STREAM_WHENCE_CUR,
  MU_STREAM_WHENCE_END
};

enum stream_state
{
  MU_STREAM_NO_STATE,
  MU_STREAM_STATE_OPEN,
  MU_STREAM_STATE_READ,
  MU_STREAM_STATE_WRITE,
  MU_STREAM_STATE_CLOSE
};

extern int stream_add_ref     __P ((stream_t));
extern int stream_release     __P ((stream_t));
extern int stream_destroy     __P ((stream_t));

extern int stream_open        __P ((stream_t, const char *, int, int));
extern int stream_close       __P ((stream_t));

extern int stream_read        __P ((stream_t, void *, size_t, size_t *));
extern int stream_readline    __P ((stream_t, char *, size_t, size_t *));
extern int stream_write       __P ((stream_t, const void *, size_t, size_t*));

extern int stream_seek        __P ((stream_t, off_t, enum stream_whence));
extern int stream_tell        __P ((stream_t, off_t *));

extern int stream_get_size    __P ((stream_t, off_t *));
extern int stream_truncate    __P ((stream_t, off_t));
extern int stream_flush       __P ((stream_t));

extern int stream_get_fd      __P ((stream_t , int *));
extern int stream_get_flags   __P ((stream_t, int *));
extern int stream_get_state   __P ((stream_t, enum stream_state  *));

/* Misc.  */
extern int stream_file_create    __P ((stream_t *));
extern int stream_mapfile_create __P ((stream_t *));
extern int stream_memory_create  __P ((stream_t *));
extern int stream_tcp_create     __P ((stream_t *));
extern int stream_buffer_create  __P ((stream_t *, stream_t, size_t));

__MAILUTILS_END_DECLS

#endif /* _MAILUTILS_STREAM_H */