io.h 3.13 KB
/* GNU mailutils - a suite of utilities for electronic mail
   Copyright (C) 1999, 2000 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 _IO_H
# define _IO_H

#include <sys/types.h>

#ifdef __cplusplus
extern "C" { /*}*/
#endif

#ifndef __P
# ifdef __STDC__
#  define __P(args) args
# else
#  define __P(args) ()
# endif
#endif /*__P */

struct _stream;
typedef struct _stream *stream_t;

/*  stream will be destroy on stream_destroy */
#define MU_STREAM_READ	   0x00000001
#define MU_STREAM_WRITE	   0x00000002
#define MU_STREAM_RDWR     0x00000004
#define MU_STREAM_APPEND   0x00000008
#define MU_STREAM_CREAT	   0x00000010
#define MU_STREAM_NONBLOCK 0x00000020
#define MU_STREAM_NO_CHECK 0x00000040

extern int stream_create __P ((stream_t *, int flags, void *owner));

extern void stream_destroy __P ((stream_t *, void *owner));
extern int stream_set_destroy __P ((stream_t, void (*_destroy) __P ((stream_t)),
				    void *owner));

extern int stream_open __P ((stream_t, const char *, int, int));
extern int stream_set_open __P ((stream_t,
                                 int (*_open) __P ((stream_t, const char *,
                                              int, int)),
                                 void *owner));

extern int stream_close __P ((stream_t));
extern int stream_set_close __P ((stream_t, int (*_close) __P ((stream_t)),
                                 void *owner));

extern int stream_get_fd __P ((stream_t , int *));
extern int stream_set_fd __P ((stream_t,
			       int (*_get_fd)(stream_t, int *),
			       void *owner));

extern int stream_read __P ((stream_t, char *, size_t, off_t, size_t *));
extern int stream_set_read __P ((stream_t,
				 int (*_read) __P ((stream_t, char *,
						    size_t, off_t, size_t *)),
				 void *owner));

extern int stream_write __P ((stream_t, const char *, size_t, off_t, size_t *));
extern int stream_set_write __P ((stream_t,
				  int (*_write) __P ((stream_t, const char *,
						size_t, off_t,
						size_t *)),
				  void *owner));

extern int stream_get_flags __P ((stream_t , int *flags));

/* misc */
extern int file_stream_create	__P ((stream_t *stream, const char *filename,
				      int flags));
extern int encoder_stream_create	__P ((stream_t *stream, stream_t iostream,
				      const char *encoding));
extern int decoder_stream_create	__P ((stream_t *stream, stream_t iostream,
				      const char *encoding));
extern int tcp_stream_create	__P ((stream_t *stream));

#ifdef __cplusplus
}
#endif

#endif /* _IO_H */