1 /* GIO - GLib Input, Output and Streaming Library 2 * 3 * Copyright (C) 2006-2007 Red Hat, Inc. 4 * 5 * This library is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU Lesser General Public 7 * License as published by the Free Software Foundation; either 8 * version 2 of the License, or (at your option) any later version. 9 * 10 * This library is distributed in the hope that it will be useful, 11 * but WITHOUT ANY WARRANTY; without even the implied warranty of 12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 * Lesser General Public License for more details. 14 * 15 * You should have received a copy of the GNU Lesser General 16 * Public License along with this library; if not, write to the 17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330, 18 * Boston, MA 02111-1307, USA. 19 * 20 * Author: Alexander Larsson <alexl@redhat.com> 21 */ 22 23 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION) 24 #error "Only <gio/gio.h> can be included directly." 25 #endif 26 27 #ifndef __G_FILE_INPUT_STREAM_H__ 28 #define __G_FILE_INPUT_STREAM_H__ 29 30 #include <gio/ginputstream.h> 31 32 G_BEGIN_DECLS 33 34 #define G_TYPE_FILE_INPUT_STREAM (g_file_input_stream_get_type ()) 35 #define G_FILE_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_FILE_INPUT_STREAM, GFileInputStream)) 36 #define G_FILE_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_FILE_INPUT_STREAM, GFileInputStreamClass)) 37 #define G_IS_FILE_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_FILE_INPUT_STREAM)) 38 #define G_IS_FILE_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_FILE_INPUT_STREAM)) 39 #define G_FILE_INPUT_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_FILE_INPUT_STREAM, GFileInputStreamClass)) 40 41 /** 42 * GFileInputStream: 43 * 44 * A subclass of GInputStream for opened files. This adds 45 * a few file-specific operations and seeking. 46 * 47 * #GFileInputStream implements #GSeekable. 48 **/ 49 typedef struct _GFileInputStreamClass GFileInputStreamClass; 50 typedef struct _GFileInputStreamPrivate GFileInputStreamPrivate; 51 52 struct _GFileInputStream 53 { 54 GInputStream parent_instance; 55 56 /*< private >*/ 57 GFileInputStreamPrivate *priv; 58 }; 59 60 struct _GFileInputStreamClass 61 { 62 GInputStreamClass parent_class; 63 64 goffset (* tell) (GFileInputStream *stream); 65 gboolean (* can_seek) (GFileInputStream *stream); 66 gboolean (* seek) (GFileInputStream *stream, 67 goffset offset, 68 GSeekType type, 69 GCancellable *cancellable, 70 GError **error); 71 GFileInfo * (* query_info) (GFileInputStream *stream, 72 const char *attributes, 73 GCancellable *cancellable, 74 GError **error); 75 void (* query_info_async) (GFileInputStream *stream, 76 const char *attributes, 77 int io_priority, 78 GCancellable *cancellable, 79 GAsyncReadyCallback callback, 80 gpointer user_data); 81 GFileInfo * (* query_info_finish) (GFileInputStream *stream, 82 GAsyncResult *res, 83 GError **error); 84 85 /*< private >*/ 86 /* Padding for future expansion */ 87 void (*_g_reserved1) (void); 88 void (*_g_reserved2) (void); 89 void (*_g_reserved3) (void); 90 void (*_g_reserved4) (void); 91 void (*_g_reserved5) (void); 92 }; 93 94 GType g_file_input_stream_get_type (void) G_GNUC_CONST; 95 96 GFileInfo *g_file_input_stream_query_info (GFileInputStream *stream, 97 const char *attributes, 98 GCancellable *cancellable, 99 GError **error); 100 void g_file_input_stream_query_info_async (GFileInputStream *stream, 101 const char *attributes, 102 int io_priority, 103 GCancellable *cancellable, 104 GAsyncReadyCallback callback, 105 gpointer user_data); 106 GFileInfo *g_file_input_stream_query_info_finish (GFileInputStream *stream, 107 GAsyncResult *result, 108 GError **error); 109 110 G_END_DECLS 111 112 #endif /* __G_FILE_FILE_INPUT_STREAM_H__ */ 113