Add GConverterOutputStream
[platform/upstream/glib.git] / gio / giotypes.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, 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 __GIO_TYPES_H__
28 #define __GIO_TYPES_H__
29
30 #include <gio/gioenums.h>
31
32 G_BEGIN_DECLS
33
34 typedef struct _GAppLaunchContext             GAppLaunchContext;
35 typedef struct _GAppInfo                      GAppInfo; /* Dummy typedef */
36 typedef struct _GAsyncResult                  GAsyncResult; /* Dummy typedef */
37 typedef struct _GAsyncInitable                GAsyncInitable;
38 typedef struct _GBufferedInputStream          GBufferedInputStream;
39 typedef struct _GBufferedOutputStream         GBufferedOutputStream;
40 typedef struct _GCancellable                  GCancellable;
41 typedef struct _GCharsetConverter             GCharsetConverter;
42 typedef struct _GConverter                    GConverter;
43 typedef struct _GConverterInputStream         GConverterInputStream;
44 typedef struct _GConverterOutputStream        GConverterOutputStream;
45 typedef struct _GDataInputStream              GDataInputStream;
46
47 /**
48  * GDrive:
49  *
50  * Opaque drive object.
51  **/
52 typedef struct _GDrive                        GDrive; /* Dummy typedef */
53 typedef struct _GFileEnumerator               GFileEnumerator;
54 typedef struct _GFileMonitor                  GFileMonitor;
55 typedef struct _GFilterInputStream            GFilterInputStream;
56 typedef struct _GFilterOutputStream           GFilterOutputStream;
57
58 /**
59  * GFile:
60  *
61  * A handle to an object implementing the #GFileIface interface.
62  * Generally stores a location within the file system. Handles do not
63  * necessarily represent files or directories that currently exist.
64  **/
65 typedef struct _GFile                         GFile; /* Dummy typedef */
66 typedef struct _GFileInfo                     GFileInfo;
67
68 /**
69  * GFileAttributeMatcher:
70  *
71  * Determines if a string matches a file attribute.
72  **/
73 typedef struct _GFileAttributeMatcher         GFileAttributeMatcher;
74 typedef struct _GFileAttributeInfo            GFileAttributeInfo;
75 typedef struct _GFileAttributeInfoList        GFileAttributeInfoList;
76 typedef struct _GFileInputStream              GFileInputStream;
77 typedef struct _GFileOutputStream             GFileOutputStream;
78 typedef struct _GFileIOStream                 GFileIOStream;
79 typedef struct _GFileIcon                     GFileIcon;
80 typedef struct _GFilenameCompleter            GFilenameCompleter;
81
82
83 typedef struct _GIcon                         GIcon; /* Dummy typedef */
84 typedef struct _GInetAddress                  GInetAddress;
85 typedef struct _GInetSocketAddress            GInetSocketAddress;
86 typedef struct _GInputStream                  GInputStream;
87 typedef struct _GInitable                     GInitable;
88 typedef struct _GIOModule                     GIOModule;
89 typedef struct _GIOExtensionPoint             GIOExtensionPoint;
90 typedef struct _GIOExtension                  GIOExtension;
91
92 /**
93  * GIOSchedulerJob:
94  *
95  * Opaque class for definining and scheduling IO jobs.
96  **/
97 typedef struct _GIOSchedulerJob               GIOSchedulerJob;
98 typedef struct _GLoadableIcon                 GLoadableIcon; /* Dummy typedef */
99 typedef struct _GMemoryInputStream            GMemoryInputStream;
100 typedef struct _GMemoryOutputStream           GMemoryOutputStream;
101
102 /**
103  * GMount:
104  *
105  * A handle to an object implementing the #GMountIface interface.
106  **/
107 typedef struct _GMount                        GMount; /* Dummy typedef */
108 typedef struct _GMountOperation               GMountOperation;
109 typedef struct _GNetworkAddress               GNetworkAddress;
110 typedef struct _GNetworkService               GNetworkService;
111 typedef struct _GOutputStream                 GOutputStream;
112 typedef struct _GIOStream                     GIOStream;
113 typedef struct _GResolver                     GResolver;
114 typedef struct _GSeekable                     GSeekable;
115 typedef struct _GSimpleAsyncResult            GSimpleAsyncResult;
116
117 /**
118  * GSocket:
119  *
120  * A lowlevel network socket object.
121  *
122  * Since: 2.22
123  **/
124 typedef struct _GSocket                       GSocket;
125
126 /**
127  * GSocketControlMessage:
128  *
129  * Base class for socket-type specific control messages that can be sent and
130  * received over #GSocket.
131  **/
132 typedef struct _GSocketControlMessage         GSocketControlMessage;
133 /**
134  * GSocketClient:
135  *
136  * A helper class for network clients to make connections.
137  *
138  * Since: 2.22
139  **/
140 typedef struct _GSocketClient                               GSocketClient;
141 /**
142  * GSocketConnection:
143  *
144  * A socket connection GIOStream object for connection-oriented sockets.
145  *
146  * Since: 2.22
147  **/
148 typedef struct _GSocketConnection                           GSocketConnection;
149 /**
150  * GSocketClient:
151  *
152  * A helper class for network servers to listen for and accept connections.
153  *
154  * Since: 2.22
155  **/
156 typedef struct _GSocketListener                             GSocketListener;
157 /**
158  * GSocketService:
159  *
160  * A helper class for handling accepting incomming connections in the
161  * glib mainloop.
162  *
163  * Since: 2.22
164  **/
165 typedef struct _GSocketService                              GSocketService;
166 typedef struct _GSocketAddress                GSocketAddress;
167 typedef struct _GSocketAddressEnumerator      GSocketAddressEnumerator;
168 typedef struct _GSocketConnectable            GSocketConnectable;
169 typedef struct _GSrvTarget                    GSrvTarget;
170 /**
171  * GTcpConnection:
172  *
173  * A #GSocketConnection for TCP/IP connections.
174  *
175  * Since: 2.22
176  **/
177 typedef struct _GTcpConnection                              GTcpConnection;
178 /**
179  * GThreadedSocketService:
180  *
181  * A helper class for handling accepting incomming connections in the
182  * glib mainloop and handling them in a thread.
183  *
184  * Since: 2.22
185  **/
186 typedef struct _GThreadedSocketService                      GThreadedSocketService;
187 typedef struct _GThemedIcon                   GThemedIcon;
188 typedef struct _GVfs                          GVfs; /* Dummy typedef */
189
190 /**
191  * GVolume:
192  *
193  * Opaque mountable volume object.
194  **/
195 typedef struct _GVolume                       GVolume; /* Dummy typedef */
196 typedef struct _GVolumeMonitor                GVolumeMonitor;
197
198 /**
199  * GAsyncReadyCallback:
200  * @source_object: the object the asynchronous operation was started with.
201  * @res: a #GAsyncResult.
202  * @user_data: user data passed to the callback.
203  *
204  * Type definition for a function that will be called back when an asynchronous
205  * operation within GIO has been completed.
206  **/
207 typedef void (*GAsyncReadyCallback) (GObject *source_object,
208                                      GAsyncResult *res,
209                                      gpointer user_data);
210
211 /**
212  * GFileProgressCallback:
213  * @current_num_bytes: the current number of bytes in the operation.
214  * @total_num_bytes: the total number of bytes in the operation.
215  * @user_data: user data passed to the callback.
216  *
217  * When doing file operations that may take a while, such as moving
218  * a file or copying a file, a progress callback is used to pass how
219  * far along that operation is to the application.
220  **/
221 typedef void (*GFileProgressCallback) (goffset current_num_bytes,
222                                        goffset total_num_bytes,
223                                        gpointer user_data);
224
225 /**
226  * GFileReadMoreCallback:
227  * @file_contents: the data as currently read.
228  * @file_size: the size of the data currently read.
229  * @callback_data: data passed to the callback.
230  *
231  * When loading the partial contents of a file with g_file_load_partial_contents_async(),
232  * it may become necessary to determine if any more data from the file should be loaded.
233  * A #GFileReadMoreCallback function facilitates this by returning %TRUE if more data
234  * should be read, or %FALSE otherwise.
235  *
236  * Returns: %TRUE if more data should be read back. %FALSE otherwise.
237  **/
238 typedef gboolean (* GFileReadMoreCallback) (const char *file_contents,
239                                             goffset file_size,
240                                             gpointer callback_data);
241
242
243 /**
244  * GIOSchedulerJobFunc:
245  * @job: a #GIOSchedulerJob.
246  * @cancellable: optional #GCancellable object, %NULL to ignore.
247  * @user_data: the data to pass to callback function
248  *
249  * I/O Job function.
250  *
251  * Note that depending on whether threads are available, the
252  * #GIOScheduler may run jobs in separate threads or in an idle
253  * in the mainloop.
254  *
255  * Long-running jobs should periodically check the @cancellable
256  * to see if they have been cancelled.
257  *
258  * Returns: %TRUE if this function should be called again to
259  *    complete the job, %FALSE if the job is complete (or cancelled)
260  **/
261 typedef gboolean (*GIOSchedulerJobFunc) (GIOSchedulerJob *job,
262                                          GCancellable    *cancellable,
263                                          gpointer         user_data);
264
265 /**
266  * GSimpleAsyncThreadFunc:
267  * @res: a #GSimpleAsyncResult.
268  * @object: a #GObject.
269  * @cancellable: optional #GCancellable object, %NULL to ignore.
270  *
271  * Simple thread function that runs an asynchronous operation and
272  * checks for cancellation.
273  **/
274 typedef void (*GSimpleAsyncThreadFunc) (GSimpleAsyncResult *res,
275                                         GObject *object,
276                                         GCancellable *cancellable);
277
278 /**
279  * GSocketSourceFunc:
280  * @socket: the #GSocket
281  * @condition: the current condition at the source fired.
282  * @user_data: data passed in by the user.
283  *
284  * This is the function type of the callback used for the #GSource
285  * returned by g_socket_create_source().
286  *
287  * Returns: it should return %FALSE if the source should be removed.
288  *
289  * Since: 2.22
290  */
291 typedef gboolean (*GSocketSourceFunc) (GSocket *socket,
292                                        GIOCondition condition,
293                                        gpointer user_data);
294
295 /**
296  * GInputVector:
297  * @buffer: Pointer to a buffer where data will be written.
298  * @size: the available size in @buffer.
299  *
300  * Structure used for scatter/gather data input.
301  * You generally pass in an array of #GInputVector<!-- -->s
302  * and the operation will store the read data starting in the
303  * first buffer, switching to the next as needed.
304  *
305  * Since: 2.22
306  */
307 typedef struct _GInputVector GInputVector;
308
309 struct _GInputVector {
310   gpointer buffer;
311   gsize size;
312 };
313
314 /**
315  * GOutputVector:
316  * @buffer: Pointer to a buffer of data to read.
317  * @size: the size of @buffer.
318  *
319  * Structure used for scatter/gather data output.
320  * You generally pass in an array of #GOutputVector<!-- -->s
321  * and the operation will use all the buffers as if they were
322  * one buffer.
323  *
324  * Since: 2.22
325  */
326 typedef struct _GOutputVector GOutputVector;
327
328 struct _GOutputVector {
329   gconstpointer buffer;
330   gsize size;
331 };
332
333
334 G_END_DECLS
335
336 #endif /* __GIO_TYPES_H__ */