glib/gio/gfileinputstream.h

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/* GIO - GLib Input, Output 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>
*/
#ifndef __G_FILE_INPUT_STREAM_H__
#define __G_FILE_INPUT_STREAM_H__
#include <gio/ginputstream.h>
#include <gio/gfileinfo.h>
G_BEGIN_DECLS
#define G_TYPE_FILE_INPUT_STREAM (g_file_input_stream_get_type ())
#define G_FILE_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_FILE_INPUT_STREAM, GFileInputStream))
#define G_FILE_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_FILE_INPUT_STREAM, GFileInputStreamClass))
#define G_IS_FILE_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_FILE_INPUT_STREAM))
#define G_IS_FILE_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_FILE_INPUT_STREAM))
#define G_FILE_INPUT_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_FILE_INPUT_STREAM, GFileInputStreamClass))
/**
* GFileInputStream:
*
* A subclass of GInputStream for opened files. This adds
* a few file-specific operations and seeking.
*
* #GFileInputStream implements #GSeekable.
**/
typedef struct _GFileInputStream GFileInputStream;
typedef struct _GFileInputStreamClass GFileInputStreamClass;
typedef struct _GFileInputStreamPrivate GFileInputStreamPrivate;
struct _GFileInputStream
{
GInputStream parent_instance;
/*< private >*/
GFileInputStreamPrivate *priv;
};
struct _GFileInputStreamClass
{
GInputStreamClass parent_class;
goffset (*tell) (GFileInputStream *stream);
gboolean (*can_seek) (GFileInputStream *stream);
gboolean (*seek) (GFileInputStream *stream,
goffset offset,
GSeekType type,
GCancellable *cancellable,
GError **error);
GFileInfo *(*query_info) (GFileInputStream *stream,
char *attributes,
GCancellable *cancellable,
GError **error);
void (*query_info_async) (GFileInputStream *stream,
char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
GFileInfo *(*query_info_finish) (GFileInputStream *stream,
GAsyncResult *res,
GError **error);
/*< private >*/
/* 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_input_stream_get_type (void) G_GNUC_CONST;
GFileInfo *g_file_input_stream_query_info (GFileInputStream *stream,
char *attributes,
GCancellable *cancellable,
GError **error);
void g_file_input_stream_query_info_async (GFileInputStream *stream,
char *attributes,
int io_priority,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data);
GFileInfo *g_file_input_stream_query_info_finish (GFileInputStream *stream,
GAsyncResult *result,
GError **error);
goffset g_file_input_stream_tell (GFileInputStream *stream);
gboolean g_file_input_stream_can_seek (GFileInputStream *stream);
gboolean g_file_input_stream_seek (GFileInputStream *stream,
goffset offset,
GSeekType type,
GCancellable *cancellable,
GError **error);
G_END_DECLS
#endif /* __G_FILE_FILE_INPUT_STREAM_H__ */