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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-stream.h : class for an abstract stream */
/*
*
* Author :
* Bertrand Guiheneuf <bertrand@helixcode.com>
*
* Copyright 1999, 2000 HelixCode (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 <gtk/gtk.h>
#define CAMEL_STREAM_TYPE (camel_stream_get_type ())
#define CAMEL_STREAM(obj) (GTK_CHECK_CAST((obj), CAMEL_STREAM_TYPE, CamelStream))
#define CAMEL_STREAM_CLASS(k) (GTK_CHECK_CLASS_CAST ((k), CAMEL_STREAM_TYPE, CamelStreamClass))
#define CAMEL_IS_STREAM(o) (GTK_CHECK_TYPE((o), CAMEL_STREAM_TYPE))
typedef enum
{
CAMEL_STREAM_SET,
CAMEL_STREAM_CUR,
CAMEL_STREAM_END
} CamelStreamSeekPolicy;
typedef struct
{
GtkObject parent_object;
} CamelStream;
typedef struct {
GtkObjectClass parent_class;
/* Virtual methods */
gint (*read) (CamelStream *stream, gchar *buffer, gint n);
gint (*write) (CamelStream *stream, const gchar *buffer, gint n);
void (*flush) (CamelStream *stream);
gint (*available) (CamelStream *stream);
gboolean (*eos) (CamelStream *stream);
void (*close) (CamelStream *stream);
gint (*seek) (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy);
} CamelStreamClass;
/* Standard Gtk function */
GtkType camel_stream_get_type (void);
/* public methods */
gint camel_stream_read (CamelStream *stream, gchar *buffer, gint n);
gint camel_stream_write (CamelStream *stream, const gchar *buffer, gint n);
void camel_stream_flush (CamelStream *stream);
gint camel_stream_available (CamelStream *stream);
gboolean camel_stream_eos (CamelStream *stream);
void camel_stream_close (CamelStream *stream);
gint camel_stream_seek (CamelStream *stream, gint offset, CamelStreamSeekPolicy policy);
/* utility macros and funcs */
#define camel_stream_write_string(stream, string) camel_stream_write ((stream), (string), strlen (string))
void camel_stream_write_strings (CamelStream *stream, ... );
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* CAMEL_STREAM_H */
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