mirror of
https://gitlab.gnome.org/GNOME/glib.git
synced 2024-10-31 03:26:19 +01:00
106 lines
3.2 KiB
C
106 lines
3.2 KiB
C
/* GIO - GLib Input, Output and Streaming Library
|
|
*
|
|
* Copyright (C) 2006-2007 Red Hat, Inc.
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
|
*
|
|
* 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 2.1 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, see <http://www.gnu.org/licenses/>.
|
|
*
|
|
* Author: Alexander Larsson <alexl@redhat.com>
|
|
*/
|
|
|
|
#ifndef __G_SEEKABLE_H__
|
|
#define __G_SEEKABLE_H__
|
|
|
|
#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
|
|
#error "Only <gio/gio.h> can be included directly."
|
|
#endif
|
|
|
|
#include <gio/giotypes.h>
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
#define G_TYPE_SEEKABLE (g_seekable_get_type ())
|
|
#define G_SEEKABLE(obj) (G_TYPE_CHECK_INSTANCE_CAST ((obj), G_TYPE_SEEKABLE, GSeekable))
|
|
#define G_IS_SEEKABLE(obj) (G_TYPE_CHECK_INSTANCE_TYPE ((obj), G_TYPE_SEEKABLE))
|
|
#define G_SEEKABLE_GET_IFACE(obj) (G_TYPE_INSTANCE_GET_INTERFACE ((obj), G_TYPE_SEEKABLE, GSeekableIface))
|
|
|
|
/**
|
|
* GSeekable:
|
|
*
|
|
* Seek object for streaming operations.
|
|
**/
|
|
typedef struct _GSeekableIface GSeekableIface;
|
|
|
|
/**
|
|
* GSeekableIface:
|
|
* @g_iface: The parent interface.
|
|
* @tell: Tells the current location within a stream.
|
|
* @can_seek: Checks if seeking is supported by the stream.
|
|
* @seek: Seeks to a location within a stream.
|
|
* @can_truncate: Checks if truncation is supported by the stream.
|
|
* @truncate_fn: Truncates a stream.
|
|
*
|
|
* Provides an interface for implementing seekable functionality on I/O Streams.
|
|
**/
|
|
struct _GSeekableIface
|
|
{
|
|
GTypeInterface g_iface;
|
|
|
|
/* Virtual Table */
|
|
|
|
goffset (* tell) (GSeekable *seekable);
|
|
|
|
gboolean (* can_seek) (GSeekable *seekable);
|
|
gboolean (* seek) (GSeekable *seekable,
|
|
goffset offset,
|
|
GSeekType type,
|
|
GCancellable *cancellable,
|
|
GError **error);
|
|
|
|
gboolean (* can_truncate) (GSeekable *seekable);
|
|
gboolean (* truncate_fn) (GSeekable *seekable,
|
|
goffset offset,
|
|
GCancellable *cancellable,
|
|
GError **error);
|
|
|
|
/* TODO: Async seek/truncate */
|
|
};
|
|
|
|
GIO_AVAILABLE_IN_ALL
|
|
GType g_seekable_get_type (void) G_GNUC_CONST;
|
|
|
|
GIO_AVAILABLE_IN_ALL
|
|
goffset g_seekable_tell (GSeekable *seekable);
|
|
GIO_AVAILABLE_IN_ALL
|
|
gboolean g_seekable_can_seek (GSeekable *seekable);
|
|
GIO_AVAILABLE_IN_ALL
|
|
gboolean g_seekable_seek (GSeekable *seekable,
|
|
goffset offset,
|
|
GSeekType type,
|
|
GCancellable *cancellable,
|
|
GError **error);
|
|
GIO_AVAILABLE_IN_ALL
|
|
gboolean g_seekable_can_truncate (GSeekable *seekable);
|
|
GIO_AVAILABLE_IN_ALL
|
|
gboolean g_seekable_truncate (GSeekable *seekable,
|
|
goffset offset,
|
|
GCancellable *cancellable,
|
|
GError **error);
|
|
|
|
G_END_DECLS
|
|
|
|
|
|
#endif /* __G_SEEKABLE_H__ */
|