stream.h
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2005, 2007 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 3 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., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA */
#ifndef _MAILUTILS_STREAM_H
# define _MAILUTILS_STREAM_H
#include <stdio.h>
#include <stdarg.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 mu_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
#define MU_STREAM_NONLOCK 0x00000400
/* This one affects only mailboxes */
#define MU_STREAM_QACCESS 0x00000800
#define MU_STREAM_IRGRP 0x00001000
#define MU_STREAM_IWGRP 0x00002000
#define MU_STREAM_IROTH 0x00004000
#define MU_STREAM_IWOTH 0x00008000
#define MU_STREAM_IMASK 0x0000F000
/* Functions useful to users of the pre-defined stream types. */
extern int mu_file_stream_create (mu_stream_t *stream, const char* filename,
int flags);
extern int mu_temp_file_stream_create (mu_stream_t *stream, const char *dir);
extern int mu_tcp_stream_create (mu_stream_t *stream, const char* host,
int port, int flags);
extern int mu_tcp_stream_create_with_source_ip (mu_stream_t *stream,
const char *host, int port,
unsigned long source_ip,
int flags);
extern int mu_tcp_stream_create_with_source_host (mu_stream_t *stream,
const char *host, int port,
const char *source_host,
int flags);
extern int mu_socket_stream_create (mu_stream_t *stream, const char *filename,
int flags);
extern int mu_mapfile_stream_create (mu_stream_t *stream, const char* filename,
int flags);
extern int mu_memory_stream_create (mu_stream_t *stream, const char* filename,
int flags);
extern int mu_encoder_stream_create (mu_stream_t *stream, mu_stream_t iostream,
const char *encoding);
extern int mu_decoder_stream_create (mu_stream_t *stream, mu_stream_t iostream,
const char *encoding);
extern int mu_stdio_stream_create (mu_stream_t *stream, FILE* stdio,
int flags);
extern int mu_prog_stream_create (mu_stream_t *stream, const char *progname,
int flags);
int mu_filter_prog_stream_create (mu_stream_t *stream, const char *progname,
mu_stream_t input);
extern void mu_stream_destroy (mu_stream_t *, void *owner);
extern int mu_stream_open (mu_stream_t);
extern int mu_stream_close (mu_stream_t);
extern int mu_stream_is_seekable (mu_stream_t);
extern int mu_stream_get_transport2 (mu_stream_t stream, mu_transport_t *pt,
mu_transport_t *pt2);
extern int mu_stream_get_transport (mu_stream_t stream, mu_transport_t *pt);
extern int mu_stream_read (mu_stream_t, char *, size_t, mu_off_t, size_t *);
extern int mu_stream_readline (mu_stream_t, char *, size_t, mu_off_t, size_t *);
extern int mu_stream_getline (mu_stream_t is, char **pbuf, size_t *pbufsize,
mu_off_t offset, size_t *pnread);
extern int mu_stream_size (mu_stream_t, mu_off_t *);
extern int mu_stream_truncate (mu_stream_t, mu_off_t);
extern int mu_stream_write (mu_stream_t, const char *, size_t, mu_off_t,
size_t *);
extern int mu_stream_setbufsiz (mu_stream_t stream, size_t size);
extern int mu_stream_flush (mu_stream_t);
extern int mu_stream_shutdown (mu_stream_t stream, int how);
extern int mu_stream_vprintf (mu_stream_t os, mu_off_t *poff,
const char *fmt, va_list ap);
extern int mu_stream_printf (mu_stream_t stream, mu_off_t *off,
const char *fmt, ...) MU_PRINTFLIKE(3,4);
extern int mu_stream_sequential_vprintf (mu_stream_t stream, const char *fmt,
va_list ap);
extern int mu_stream_sequential_printf (mu_stream_t stream, const char *fmt,
...) MU_PRINTFLIKE(2,3);
#define MU_STREAM_READY_RD 0x1
#define MU_STREAM_READY_WR 0x2
#define MU_STREAM_READY_EX 0x4
struct timeval; /* Needed for the following declaration */
extern int mu_stream_wait (mu_stream_t stream, int *pflags, struct timeval *);
/* Functions useful to implementors of new stream types. */
extern int mu_stream_create (mu_stream_t *stream, int flags, void *owner);
extern void* mu_stream_get_owner (mu_stream_t);
extern void mu_stream_set_owner (mu_stream_t, void* owner);
extern int mu_stream_get_flags (mu_stream_t, int *pflags);
extern int mu_stream_set_flags (mu_stream_t, int flags);
extern int mu_stream_get_property (mu_stream_t, mu_property_t *);
extern int mu_stream_set_property (mu_stream_t, mu_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 mu_stream_get_state (mu_stream_t, int *pstate);
extern int mu_stream_set_destroy (mu_stream_t,
void (*_destroy) (mu_stream_t), void *owner);
extern int mu_stream_set_open (mu_stream_t,
int (*_open) (mu_stream_t), void *owner);
extern int mu_stream_set_close (mu_stream_t,
int (*_close) (mu_stream_t), void *owner);
extern int mu_stream_set_get_transport2 (mu_stream_t,
int (*_get_fd) (mu_stream_t, mu_transport_t *, mu_transport_t *),
void *owner);
extern int mu_stream_set_read (mu_stream_t,
int (*_read) (mu_stream_t, char *, size_t, mu_off_t, size_t *),
void *owner);
extern int mu_stream_set_readline (mu_stream_t,
int (*_readline) (mu_stream_t, char *, size_t, mu_off_t, size_t *),
void *owner);
extern int mu_stream_set_size (mu_stream_t,
int (*_size) (mu_stream_t, mu_off_t *), void *owner);
extern int mu_stream_set_truncate (mu_stream_t,
int (*_truncate) (mu_stream_t, mu_off_t), void *owner);
extern int mu_stream_set_write (mu_stream_t,
int (*_write) (mu_stream_t, const char *, size_t, mu_off_t, size_t *),
void *owner);
extern int mu_stream_set_flush (mu_stream_t,
int (*_flush) (mu_stream_t), void *owner);
extern int mu_stream_set_strerror (mu_stream_t stream,
int (*fp) (mu_stream_t, const char **), void *owner);
extern int mu_stream_set_wait (mu_stream_t stream,
int (*wait) (mu_stream_t, int *, struct timeval *), void *owner);
extern int mu_stream_set_shutdown (mu_stream_t stream,
int (*_shutdown) (mu_stream_t, int how), void *owner);
extern int mu_stream_sequential_read (mu_stream_t stream,
char *buf, size_t size, size_t *nbytes);
extern int mu_stream_sequential_readline (mu_stream_t stream,
char *buf, size_t size, size_t *nbytes);
extern int mu_stream_sequential_getline (mu_stream_t is,
char **pbuf, size_t *pbufsize, size_t *pnread);
extern int mu_stream_sequential_write (mu_stream_t stream,
const char *buf, size_t size);
extern int mu_stream_seek (mu_stream_t stream, mu_off_t off, int whence);
extern int mu_stream_strerror (mu_stream_t stream, const char **p);
#ifdef __cplusplus
}
#endif
#endif /* _MAILUTILS_STREAM_H */