glib (2.79.0)
1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 *
5 * SPDX-License-Identifier: LGPL-2.1-or-later
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General
18 * Public License along with this library; if not, see <http://www.gnu.org/licenses/>.
19 *
20 * Author: Alexander Larsson <alexl@redhat.com>
21 */
22
23 #ifndef __G_INPUT_STREAM_H__
24 #define __G_INPUT_STREAM_H__
25
26 #if !defined (__GIO_GIO_H_INSIDE__) && !defined (GIO_COMPILATION)
27 #error "Only <gio/gio.h> can be included directly."
28 #endif
29
30 #include <gio/giotypes.h>
31
32 G_BEGIN_DECLS
33
34 #define G_TYPE_INPUT_STREAM (g_input_stream_get_type ())
35 #define G_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_CAST ((o), G_TYPE_INPUT_STREAM, GInputStream))
36 #define G_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_CAST((k), G_TYPE_INPUT_STREAM, GInputStreamClass))
37 #define G_IS_INPUT_STREAM(o) (G_TYPE_CHECK_INSTANCE_TYPE ((o), G_TYPE_INPUT_STREAM))
38 #define G_IS_INPUT_STREAM_CLASS(k) (G_TYPE_CHECK_CLASS_TYPE ((k), G_TYPE_INPUT_STREAM))
39 #define G_INPUT_STREAM_GET_CLASS(o) (G_TYPE_INSTANCE_GET_CLASS ((o), G_TYPE_INPUT_STREAM, GInputStreamClass))
40
41 typedef struct _GInputStreamClass GInputStreamClass;
42 typedef struct _GInputStreamPrivate GInputStreamPrivate;
43
44 struct _GInputStream
45 {
46 GObject parent_instance;
47
48 /*< private >*/
49 GInputStreamPrivate *priv;
50 };
51
52 struct _GInputStreamClass
53 {
54 GObjectClass parent_class;
55
56 /* Sync ops: */
57
58 gssize (* read_fn) (GInputStream *stream,
59 void *buffer,
60 gsize count,
61 GCancellable *cancellable,
62 GError **error);
63 gssize (* skip) (GInputStream *stream,
64 gsize count,
65 GCancellable *cancellable,
66 GError **error);
67 gboolean (* close_fn) (GInputStream *stream,
68 GCancellable *cancellable,
69 GError **error);
70
71 /* Async ops: (optional in derived classes) */
72 void (* read_async) (GInputStream *stream,
73 void *buffer,
74 gsize count,
75 int io_priority,
76 GCancellable *cancellable,
77 GAsyncReadyCallback callback,
78 gpointer user_data);
79 gssize (* read_finish) (GInputStream *stream,
80 GAsyncResult *result,
81 GError **error);
82 void (* skip_async) (GInputStream *stream,
83 gsize count,
84 int io_priority,
85 GCancellable *cancellable,
86 GAsyncReadyCallback callback,
87 gpointer user_data);
88 gssize (* skip_finish) (GInputStream *stream,
89 GAsyncResult *result,
90 GError **error);
91 void (* close_async) (GInputStream *stream,
92 int io_priority,
93 GCancellable *cancellable,
94 GAsyncReadyCallback callback,
95 gpointer user_data);
96 gboolean (* close_finish) (GInputStream *stream,
97 GAsyncResult *result,
98 GError **error);
99
100 /*< private >*/
101 /* Padding for future expansion */
102 void (*_g_reserved1) (void);
103 void (*_g_reserved2) (void);
104 void (*_g_reserved3) (void);
105 void (*_g_reserved4) (void);
106 void (*_g_reserved5) (void);
107 };
108
109 GIO_AVAILABLE_IN_ALL
110 GType g_input_stream_get_type (void) G_GNUC_CONST;
111
112 GIO_AVAILABLE_IN_ALL
113 gssize g_input_stream_read (GInputStream *stream,
114 void *buffer,
115 gsize count,
116 GCancellable *cancellable,
117 GError **error);
118 GIO_AVAILABLE_IN_ALL
119 gboolean g_input_stream_read_all (GInputStream *stream,
120 void *buffer,
121 gsize count,
122 gsize *bytes_read,
123 GCancellable *cancellable,
124 GError **error);
125 GIO_AVAILABLE_IN_2_34
126 GBytes *g_input_stream_read_bytes (GInputStream *stream,
127 gsize count,
128 GCancellable *cancellable,
129 GError **error);
130 GIO_AVAILABLE_IN_ALL
131 gssize g_input_stream_skip (GInputStream *stream,
132 gsize count,
133 GCancellable *cancellable,
134 GError **error);
135 GIO_AVAILABLE_IN_ALL
136 gboolean g_input_stream_close (GInputStream *stream,
137 GCancellable *cancellable,
138 GError **error);
139 GIO_AVAILABLE_IN_ALL
140 void g_input_stream_read_async (GInputStream *stream,
141 void *buffer,
142 gsize count,
143 int io_priority,
144 GCancellable *cancellable,
145 GAsyncReadyCallback callback,
146 gpointer user_data);
147 GIO_AVAILABLE_IN_ALL
148 gssize g_input_stream_read_finish (GInputStream *stream,
149 GAsyncResult *result,
150 GError **error);
151
152 GIO_AVAILABLE_IN_2_44
153 void g_input_stream_read_all_async (GInputStream *stream,
154 void *buffer,
155 gsize count,
156 int io_priority,
157 GCancellable *cancellable,
158 GAsyncReadyCallback callback,
159 gpointer user_data);
160 GIO_AVAILABLE_IN_2_44
161 gboolean g_input_stream_read_all_finish (GInputStream *stream,
162 GAsyncResult *result,
163 gsize *bytes_read,
164 GError **error);
165
166 GIO_AVAILABLE_IN_2_34
167 void g_input_stream_read_bytes_async (GInputStream *stream,
168 gsize count,
169 int io_priority,
170 GCancellable *cancellable,
171 GAsyncReadyCallback callback,
172 gpointer user_data);
173 GIO_AVAILABLE_IN_2_34
174 GBytes *g_input_stream_read_bytes_finish (GInputStream *stream,
175 GAsyncResult *result,
176 GError **error);
177 GIO_AVAILABLE_IN_ALL
178 void g_input_stream_skip_async (GInputStream *stream,
179 gsize count,
180 int io_priority,
181 GCancellable *cancellable,
182 GAsyncReadyCallback callback,
183 gpointer user_data);
184 GIO_AVAILABLE_IN_ALL
185 gssize g_input_stream_skip_finish (GInputStream *stream,
186 GAsyncResult *result,
187 GError **error);
188 GIO_AVAILABLE_IN_ALL
189 void g_input_stream_close_async (GInputStream *stream,
190 int io_priority,
191 GCancellable *cancellable,
192 GAsyncReadyCallback callback,
193 gpointer user_data);
194 GIO_AVAILABLE_IN_ALL
195 gboolean g_input_stream_close_finish (GInputStream *stream,
196 GAsyncResult *result,
197 GError **error);
198
199 /* For implementations: */
200
201 GIO_AVAILABLE_IN_ALL
202 gboolean g_input_stream_is_closed (GInputStream *stream);
203 GIO_AVAILABLE_IN_ALL
204 gboolean g_input_stream_has_pending (GInputStream *stream);
205 GIO_AVAILABLE_IN_ALL
206 gboolean g_input_stream_set_pending (GInputStream *stream,
207 GError **error);
208 GIO_AVAILABLE_IN_ALL
209 void g_input_stream_clear_pending (GInputStream *stream);
210
211 G_END_DECLS
212
213 #endif /* __G_INPUT_STREAM_H__ */
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