[kdbus] KDBUS_ITEM_PAYLOAD_OFF items are (once again) relative to msg header
[platform/upstream/glib.git] / gio / gmemoryoutputstream.h
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, see <http://www.gnu.org/licenses/>.
17  *
18  * Author: Christian Kellner <gicmo@gnome.org>
19  */
20
21 #ifndef __G_MEMORY_OUTPUT_STREAM_H__
22 #define __G_MEMORY_OUTPUT_STREAM_H__
23
24 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
25 #error "Only <gio/gio.h> can be included directly."
26 #endif
27
28 #include <gio/goutputstream.h>
29
30 G_BEGIN_DECLS
31
32 #define G_TYPE_MEMORY_OUTPUT_STREAM         (g_memory_output_stream_get_type ())
33 #define G_MEMORY_OUTPUT_STREAM(o)           (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_MEMORY_OUTPUT_STREAM, GMemoryOutputStream))
34 #define G_MEMORY_OUTPUT_STREAM_CLASS(k)     (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_MEMORY_OUTPUT_STREAM, GMemoryOutputStreamClass))
35 #define G_IS_MEMORY_OUTPUT_STREAM(o)        (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_MEMORY_OUTPUT_STREAM))
36 #define G_IS_MEMORY_OUTPUT_STREAM_CLASS(k)  (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_MEMORY_OUTPUT_STREAM))
37 #define G_MEMORY_OUTPUT_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_MEMORY_OUTPUT_STREAM, GMemoryOutputStreamClass))
38
39 /**
40  * GMemoryOutputStream:
41  *
42  * Implements #GOutputStream for arbitrary memory chunks.
43  **/
44 typedef struct _GMemoryOutputStreamClass    GMemoryOutputStreamClass;
45 typedef struct _GMemoryOutputStreamPrivate  GMemoryOutputStreamPrivate;
46
47 struct _GMemoryOutputStream
48 {
49   GOutputStream parent_instance;
50
51   /*< private >*/
52   GMemoryOutputStreamPrivate *priv;
53 };
54
55 struct _GMemoryOutputStreamClass
56 {
57   GOutputStreamClass parent_class;
58
59   /*< private >*/
60   /* Padding for future expansion */
61   void (*_g_reserved1) (void);
62   void (*_g_reserved2) (void);
63   void (*_g_reserved3) (void);
64   void (*_g_reserved4) (void);
65   void (*_g_reserved5) (void);
66 };
67
68 /**
69  * GReallocFunc:
70  * @data: memory block to reallocate
71  * @size: size to reallocate @data to
72  *
73  * Changes the size of the memory block pointed to by @data to
74  * @size bytes.
75  *
76  * The function should have the same semantics as realloc().
77  *
78  * Returns: a pointer to the reallocated memory
79  */
80 typedef gpointer (* GReallocFunc) (gpointer data,
81                                    gsize    size);
82
83 GLIB_AVAILABLE_IN_ALL
84 GType          g_memory_output_stream_get_type      (void) G_GNUC_CONST;
85
86 GLIB_AVAILABLE_IN_ALL
87 GOutputStream *g_memory_output_stream_new           (gpointer             data,
88                                                      gsize                size,
89                                                      GReallocFunc         realloc_function,
90                                                      GDestroyNotify       destroy_function);
91 GLIB_AVAILABLE_IN_2_36
92 GOutputStream *g_memory_output_stream_new_resizable (void);
93 GLIB_AVAILABLE_IN_ALL
94 gpointer       g_memory_output_stream_get_data      (GMemoryOutputStream *ostream);
95 GLIB_AVAILABLE_IN_ALL
96 gsize          g_memory_output_stream_get_size      (GMemoryOutputStream *ostream);
97 GLIB_AVAILABLE_IN_ALL
98 gsize          g_memory_output_stream_get_data_size (GMemoryOutputStream *ostream);
99 GLIB_AVAILABLE_IN_ALL
100 gpointer       g_memory_output_stream_steal_data    (GMemoryOutputStream *ostream);
101
102 GLIB_AVAILABLE_IN_2_34
103 GBytes *       g_memory_output_stream_steal_as_bytes (GMemoryOutputStream *ostream);
104
105 G_END_DECLS
106
107 #endif /* __G_MEMORY_OUTPUT_STREAM_H__ */