glib/gio/gfileiostream.h

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/* GIO - GLib Input, Io and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, 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.
*
* Author: Alexander Larsson <alexl@redhat.com>
*/
#if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
#error "Only <gio/gio.h> can be included directly."
#endif
#ifndef __G_FILE_IO_STREAM_H__
#define __G_FILE_IO_STREAM_H__
#include <gio/giostream.h>
G_BEGIN_DECLS
#define G_TYPE_FILE_IO_STREAM (g_file_io_stream_get_type ())
#define G_FILE_IO_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_FILE_IO_STREAM, GFileIOStream))
#define G_FILE_IO_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_FILE_IO_STREAM, GFileIOStreamClass))
#define G_IS_FILE_IO_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_FILE_IO_STREAM))
#define G_IS_FILE_IO_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_FILE_IO_STREAM))
#define G_FILE_IO_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_FILE_IO_STREAM, GFileIOStreamClass))
/**
* GFileIOStream:
*
* A subclass of GIOStream for opened files. This adds
* a few file-specific operations and seeking and truncating.
*
* #GFileIOStream implements GSeekable.
**/
typedef struct _GFileIOStreamClass GFileIOStreamClass;
typedef struct _GFileIOStreamPrivate GFileIOStreamPrivate;
struct _GFileIOStream
{
GIOStream parent_instance;
/*< private >*/
GFileIOStreamPrivate *priv;
};
struct _GFileIOStreamClass
{
GIOStreamClass parent_class;
goffset (* tell) (GFileIOStream *stream);
gboolean (* can_seek) (GFileIOStream *stream);
gboolean (* seek) (GFileIOStream *stream,
goffset offset,
GSeekType type,
GCancellable *cancellable,
GError **error);
gboolean (* can_truncate) (GFileIOStream *stream);
gboolean (* truncate_fn) (GFileIOStream *stream,
goffset size,
GCancellable *cancellable,
GError **error);
GFileInfo * (* query_info) (GFileIOStream *stream,
const char *attributes,
GCancellable *cancellable,
GError **error);
void (* query_info_async) (GFileIOStream *stream,
const char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
GFileInfo * (* query_info_finish) (GFileIOStream *stream,
GAsyncResult *res,
GError **error);
char * (* get_etag) (GFileIOStream *stream);
/* Padding for future expansion */
void (*_g_reserved1) (void);
void (*_g_reserved2) (void);
void (*_g_reserved3) (void);
void (*_g_reserved4) (void);
void (*_g_reserved5) (void);
};
GType g_file_io_stream_get_type (void) G_GNUC_CONST;
GFileInfo *g_file_io_stream_query_info (GFileIOStream *stream,
const char *attributes,
GCancellable *cancellable,
GError **error);
void g_file_io_stream_query_info_async (GFileIOStream *stream,
const char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
GFileInfo *g_file_io_stream_query_info_finish (GFileIOStream *stream,
GAsyncResult *result,
GError **error);
char * g_file_io_stream_get_etag (GFileIOStream *stream);
G_END_DECLS
#endif /* __G_FILE_FILE_IO_STREAM_H__ */