/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; fill-column: 160 -*- */
/* camel-stream.h : class for an abstract stream */
/*
* Author:
* Bertrand Guiheneuf <bertrand@helixcode.com>
*
* Copyright 1999, 2000 Helix Code, Inc. (http://www.helixcode.com)
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#ifndef CAMEL_STREAM_H
#define CAMEL_STREAM_H 1
#ifdef __cplusplus
extern "C" {
#pragma }
#endif /* __cplusplus }*/
#include <stdarg.h>
#include <unistd.h>
#include <camel/camel-object.h>
#define CAMEL_STREAM_TYPE (camel_stream_get_type ())
#define CAMEL_STREAM(obj) (CAMEL_CHECK_CAST((obj), CAMEL_STREAM_TYPE, CamelStream))
#define CAMEL_STREAM_CLASS(k) (CAMEL_CHECK_CLASS_CAST ((k), CAMEL_STREAM_TYPE, CamelStreamClass))
#define CAMEL_IS_STREAM(o) (CAMEL_CHECK_TYPE((o), CAMEL_STREAM_TYPE))
struct _CamelStream
{
CamelObject parent_object;
gboolean eos;
};
typedef struct {
CamelObjectClass parent_class;
/* Virtual methods */
ssize_t (*read) (CamelStream *stream, char *buffer, size_t n);
ssize_t (*write) (CamelStream *stream, const char *buffer, size_t n);
int (*close) (CamelStream *stream);
int (*flush) (CamelStream *stream);
gboolean (*eos) (CamelStream *stream);
int (*reset) (CamelStream *stream);
} CamelStreamClass;
/* Standard Camel function */
CamelType camel_stream_get_type (void);
/* public methods */
ssize_t camel_stream_read (CamelStream *stream, char *buffer, size_t n);
ssize_t camel_stream_write (CamelStream *stream, const char *buffer, size_t n);
int camel_stream_flush (CamelStream *stream);
int camel_stream_close (CamelStream *stream);
gboolean camel_stream_eos (CamelStream *stream);
int camel_stream_reset (CamelStream *stream);
/* utility macros and funcs */
ssize_t camel_stream_write_string (CamelStream *stream, const char *string);
ssize_t camel_stream_printf (CamelStream *stream, const char *fmt, ... ) G_GNUC_PRINTF (2, 3);
ssize_t camel_stream_vprintf (CamelStream *stream, const char *fmt, va_list ap);
/* Write a whole stream to another stream, until eof or error on
* either stream.
*/
ssize_t camel_stream_write_to_stream (CamelStream *stream, CamelStream *output_stream);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* CAMEL_STREAM_H */
