stream.h
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
#ifndef _MAILUTILS_STREAM_H
# define _MAILUTILS_STREAM_H
#include <stdio.h>
#include <mailutils/types.h>
#ifdef __cplusplus
extern "C" { /*}*/
#endif
#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
/* Stream will be destroyed on stream_destroy without checking the owner. */
#define MU_STREAM_NO_CHECK 0x00000040
#define MU_STREAM_SEEKABLE 0x00000080
#define MU_STREAM_NO_CLOSE 0x00000100
#define MU_STREAM_ALLOW_LINKS 0x00000200
/* Functions useful to users of the pre-defined stream types. */
extern int file_stream_create __P ((stream_t *stream, const char* filename,
int flags));
extern int tcp_stream_create __P ((stream_t *stream, const char* host,
int port, int flags));
extern int mapfile_stream_create __P ((stream_t *stream, const char* filename,
int flags));
extern int memory_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 stdio_stream_create __P ((stream_t *stream, FILE* stdio,
int flags));
extern int prog_stream_create __P ((stream_t *stream, char *progname,
int flags));
int filter_prog_stream_create __P ((stream_t *stream, char *progname,
stream_t input));
extern void stream_destroy __P ((stream_t *, void *owner));
extern int stream_open __P ((stream_t));
extern int stream_close __P ((stream_t));
extern int stream_is_seekable __P ((stream_t));
extern int stream_get_fd __P ((stream_t, int *));
extern int stream_get_fd2 __P ((stream_t, int *, int *));
extern int stream_read __P ((stream_t, char *, size_t, off_t,
size_t *));
extern int stream_readline __P ((stream_t, char *, size_t, off_t,
size_t *));
extern int stream_size __P ((stream_t, off_t *));
extern int stream_truncate __P ((stream_t, off_t));
extern int stream_write __P ((stream_t, const char *, size_t, off_t,
size_t *));
extern int stream_setbufsiz __P ((stream_t stream, size_t size));
extern int stream_flush __P ((stream_t));
/* Functions useful to implementors of new stream types. */
extern int stream_create __P ((stream_t *stream, int flags,
void* owner));
extern void* stream_get_owner __P ((stream_t));
extern void stream_set_owner __P ((stream_t, void* owner));
extern int stream_get_flags __P ((stream_t, int *pflags));
extern int stream_set_flags __P ((stream_t, int flags));
extern int stream_get_property __P ((stream_t, property_t *));
extern int stream_set_property __P ((stream_t, property_t, void *));
#define MU_STREAM_STATE_OPEN 1
#define MU_STREAM_STATE_READ 2
#define MU_STREAM_STATE_WRITE 4
#define MU_STREAM_STATE_CLOSE 8
extern int stream_get_state __P ((stream_t, int *pstate));
extern int stream_set_destroy __P ((stream_t,
void (*_destroy) __PMT ((stream_t)), void *owner));
extern int stream_set_open __P ((stream_t,
int (*_open) __PMT ((stream_t)), void *owner));
extern int stream_set_close __P ((stream_t,
int (*_close) __PMT ((stream_t)), void *owner));
extern int stream_set_fd __P ((stream_t,
int (*_get_fd) __PMT ((stream_t, int *, int *)), void *owner));
extern int stream_set_read __P ((stream_t,
int (*_read) __PMT ((stream_t, char *, size_t, off_t, size_t *)),
void *owner));
extern int stream_set_readline __P ((stream_t,
int (*_readline) __PMT ((stream_t, char *, size_t, off_t, size_t *)),
void *owner));
extern int stream_set_size __P ((stream_t,
int (*_size) __PMT ((stream_t, off_t *)), void *owner));
extern int stream_set_truncate __P ((stream_t,
int (*_truncate) __PMT ((stream_t, off_t)), void *owner));
extern int stream_set_write __P ((stream_t,
int (*_write) __PMT ((stream_t, const char *, size_t, off_t, size_t *)),
void *owner));
extern int stream_set_flush __P ((stream_t,
int (*_flush) __PMT ((stream_t)), void *owner));
extern int stream_set_strerror __P ((stream_t stream,
int (*fp) (stream_t, char **), void *owner));
extern int stream_sequential_read __P((stream_t stream,
char *buf, size_t size, size_t *nbytes));
extern int stream_sequential_readline __P((stream_t stream,
char *buf, size_t size, size_t *nbytes));
extern int stream_sequential_write __P((stream_t stream,
char *buf, size_t size));
extern int stream_seek __P((stream_t stream, off_t off, int whence));
extern int stream_strerror __P((stream_t stream, char **p));
#ifdef __cplusplus
}
#endif
#endif /* _MAILUTILS_STREAM_H */