nexmon – Blame information for rev 1

Subversion Repositories:
Rev:
Rev Author Line No. Line
1 office 1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 * Copyright (C) 2007 Jürg Billeter
5 * Copyright © 2009 Codethink Limited
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 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 #include "config.h"
24 #include "gdatainputstream.h"
25 #include "gtask.h"
26 #include "gcancellable.h"
27 #include "gioenumtypes.h"
28 #include "gioerror.h"
29 #include "glibintl.h"
30  
31 #include <string.h>
32  
33 /**
34 * SECTION:gdatainputstream
35 * @short_description: Data Input Stream
36 * @include: gio/gio.h
37 * @see_also: #GInputStream
38 *
39 * Data input stream implements #GInputStream and includes functions for
40 * reading structured data directly from a binary input stream.
41 *
42 **/
43  
44 struct _GDataInputStreamPrivate {
45 GDataStreamByteOrder byte_order;
46 GDataStreamNewlineType newline_type;
47 };
48  
49 enum {
50 PROP_0,
51 PROP_BYTE_ORDER,
52 PROP_NEWLINE_TYPE
53 };
54  
55 static void g_data_input_stream_set_property (GObject *object,
56 guint prop_id,
57 const GValue *value,
58 GParamSpec *pspec);
59 static void g_data_input_stream_get_property (GObject *object,
60 guint prop_id,
61 GValue *value,
62 GParamSpec *pspec);
63  
64 G_DEFINE_TYPE_WITH_PRIVATE (GDataInputStream,
65 g_data_input_stream,
66 G_TYPE_BUFFERED_INPUT_STREAM)
67  
68  
69 static void
70 g_data_input_stream_class_init (GDataInputStreamClass *klass)
71 {
72 GObjectClass *object_class;
73  
74 object_class = G_OBJECT_CLASS (klass);
75 object_class->get_property = g_data_input_stream_get_property;
76 object_class->set_property = g_data_input_stream_set_property;
77  
78 /**
79 * GDataStream:byte-order:
80 *
81 * The ::byte-order property determines the byte ordering that
82 * is used when reading multi-byte entities (such as integers)
83 * from the stream.
84 */
85 g_object_class_install_property (object_class,
86 PROP_BYTE_ORDER,
87 g_param_spec_enum ("byte-order",
88 P_("Byte order"),
89 P_("The byte order"),
90 G_TYPE_DATA_STREAM_BYTE_ORDER,
91 G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN,
92 G_PARAM_READWRITE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_BLURB));
93  
94 /**
95 * GDataStream:newline-type:
96 *
97 * The :newline-type property determines what is considered
98 * as a line ending when reading complete lines from the stream.
99 */
100 g_object_class_install_property (object_class,
101 PROP_NEWLINE_TYPE,
102 g_param_spec_enum ("newline-type",
103 P_("Newline type"),
104 P_("The accepted types of line ending"),
105 G_TYPE_DATA_STREAM_NEWLINE_TYPE,
106 G_DATA_STREAM_NEWLINE_TYPE_LF,
107 G_PARAM_READWRITE|G_PARAM_STATIC_NAME|G_PARAM_STATIC_BLURB));
108 }
109  
110 static void
111 g_data_input_stream_set_property (GObject *object,
112 guint prop_id,
113 const GValue *value,
114 GParamSpec *pspec)
115 {
116 GDataInputStream *dstream;
117  
118 dstream = G_DATA_INPUT_STREAM (object);
119  
120 switch (prop_id)
121 {
122 case PROP_BYTE_ORDER:
123 g_data_input_stream_set_byte_order (dstream, g_value_get_enum (value));
124 break;
125  
126 case PROP_NEWLINE_TYPE:
127 g_data_input_stream_set_newline_type (dstream, g_value_get_enum (value));
128 break;
129  
130 default:
131 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
132 break;
133 }
134  
135 }
136  
137 static void
138 g_data_input_stream_get_property (GObject *object,
139 guint prop_id,
140 GValue *value,
141 GParamSpec *pspec)
142 {
143 GDataInputStreamPrivate *priv;
144 GDataInputStream *dstream;
145  
146 dstream = G_DATA_INPUT_STREAM (object);
147 priv = dstream->priv;
148  
149 switch (prop_id)
150 {
151 case PROP_BYTE_ORDER:
152 g_value_set_enum (value, priv->byte_order);
153 break;
154  
155 case PROP_NEWLINE_TYPE:
156 g_value_set_enum (value, priv->newline_type);
157 break;
158  
159 default:
160 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
161 break;
162 }
163  
164 }
165 static void
166 g_data_input_stream_init (GDataInputStream *stream)
167 {
168 stream->priv = g_data_input_stream_get_instance_private (stream);
169 stream->priv->byte_order = G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN;
170 stream->priv->newline_type = G_DATA_STREAM_NEWLINE_TYPE_LF;
171 }
172  
173 /**
174 * g_data_input_stream_new:
175 * @base_stream: a #GInputStream.
176 *
177 * Creates a new data input stream for the @base_stream.
178 *
179 * Returns: a new #GDataInputStream.
180 **/
181 GDataInputStream *
182 g_data_input_stream_new (GInputStream *base_stream)
183 {
184 GDataInputStream *stream;
185  
186 g_return_val_if_fail (G_IS_INPUT_STREAM (base_stream), NULL);
187  
188 stream = g_object_new (G_TYPE_DATA_INPUT_STREAM,
189 "base-stream", base_stream,
190 NULL);
191  
192 return stream;
193 }
194  
195 /**
196 * g_data_input_stream_set_byte_order:
197 * @stream: a given #GDataInputStream.
198 * @order: a #GDataStreamByteOrder to set.
199 *
200 * This function sets the byte order for the given @stream. All subsequent
201 * reads from the @stream will be read in the given @order.
202 *
203 **/
204 void
205 g_data_input_stream_set_byte_order (GDataInputStream *stream,
206 GDataStreamByteOrder order)
207 {
208 GDataInputStreamPrivate *priv;
209  
210 g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
211  
212 priv = stream->priv;
213  
214 if (priv->byte_order != order)
215 {
216 priv->byte_order = order;
217  
218 g_object_notify (G_OBJECT (stream), "byte-order");
219 }
220 }
221  
222 /**
223 * g_data_input_stream_get_byte_order:
224 * @stream: a given #GDataInputStream.
225 *
226 * Gets the byte order for the data input stream.
227 *
228 * Returns: the @stream's current #GDataStreamByteOrder.
229 **/
230 GDataStreamByteOrder
231 g_data_input_stream_get_byte_order (GDataInputStream *stream)
232 {
233 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN);
234  
235 return stream->priv->byte_order;
236 }
237  
238 /**
239 * g_data_input_stream_set_newline_type:
240 * @stream: a #GDataInputStream.
241 * @type: the type of new line return as #GDataStreamNewlineType.
242 *
243 * Sets the newline type for the @stream.
244 *
245 * Note that using G_DATA_STREAM_NEWLINE_TYPE_ANY is slightly unsafe. If a read
246 * chunk ends in "CR" we must read an additional byte to know if this is "CR" or
247 * "CR LF", and this might block if there is no more data available.
248 *
249 **/
250 void
251 g_data_input_stream_set_newline_type (GDataInputStream *stream,
252 GDataStreamNewlineType type)
253 {
254 GDataInputStreamPrivate *priv;
255  
256 g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
257  
258 priv = stream->priv;
259  
260 if (priv->newline_type != type)
261 {
262 priv->newline_type = type;
263  
264 g_object_notify (G_OBJECT (stream), "newline-type");
265 }
266 }
267  
268 /**
269 * g_data_input_stream_get_newline_type:
270 * @stream: a given #GDataInputStream.
271 *
272 * Gets the current newline type for the @stream.
273 *
274 * Returns: #GDataStreamNewlineType for the given @stream.
275 **/
276 GDataStreamNewlineType
277 g_data_input_stream_get_newline_type (GDataInputStream *stream)
278 {
279 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), G_DATA_STREAM_NEWLINE_TYPE_ANY);
280  
281 return stream->priv->newline_type;
282 }
283  
284 static gboolean
285 read_data (GDataInputStream *stream,
286 void *buffer,
287 gsize size,
288 GCancellable *cancellable,
289 GError **error)
290 {
291 gsize available;
292 gssize res;
293  
294 while ((available = g_buffered_input_stream_get_available (G_BUFFERED_INPUT_STREAM (stream))) < size)
295 {
296 res = g_buffered_input_stream_fill (G_BUFFERED_INPUT_STREAM (stream),
297 size - available,
298 cancellable, error);
299 if (res < 0)
300 return FALSE;
301 if (res == 0)
302 {
303 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
304 _("Unexpected early end-of-stream"));
305 return FALSE;
306 }
307 }
308  
309 /* This should always succeed, since it's in the buffer */
310 res = g_input_stream_read (G_INPUT_STREAM (stream),
311 buffer, size,
312 NULL, NULL);
313 g_warn_if_fail (res == size);
314 return TRUE;
315 }
316  
317  
318 /**
319 * g_data_input_stream_read_byte:
320 * @stream: a given #GDataInputStream.
321 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
322 * @error: #GError for error reporting.
323 *
324 * Reads an unsigned 8-bit/1-byte value from @stream.
325 *
326 * Returns: an unsigned 8-bit/1-byte value read from the @stream or %0
327 * if an error occurred.
328 **/
329 guchar
330 g_data_input_stream_read_byte (GDataInputStream *stream,
331 GCancellable *cancellable,
332 GError **error)
333 {
334 guchar c;
335  
336 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), '\0');
337  
338 if (read_data (stream, &c, 1, cancellable, error))
339 return c;
340  
341 return 0;
342 }
343  
344  
345 /**
346 * g_data_input_stream_read_int16:
347 * @stream: a given #GDataInputStream.
348 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
349 * @error: #GError for error reporting.
350 *
351 * Reads a 16-bit/2-byte value from @stream.
352 *
353 * In order to get the correct byte order for this read operation,
354 * see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order().
355 *
356 * Returns: a signed 16-bit/2-byte value read from @stream or %0 if
357 * an error occurred.
358 **/
359 gint16
360 g_data_input_stream_read_int16 (GDataInputStream *stream,
361 GCancellable *cancellable,
362 GError **error)
363 {
364 gint16 v;
365  
366 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), 0);
367  
368 if (read_data (stream, &v, 2, cancellable, error))
369 {
370 switch (stream->priv->byte_order)
371 {
372 case G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN:
373 v = GINT16_FROM_BE (v);
374 break;
375 case G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN:
376 v = GINT16_FROM_LE (v);
377 break;
378 case G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN:
379 default:
380 break;
381 }
382 return v;
383 }
384  
385 return 0;
386 }
387  
388  
389 /**
390 * g_data_input_stream_read_uint16:
391 * @stream: a given #GDataInputStream.
392 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
393 * @error: #GError for error reporting.
394 *
395 * Reads an unsigned 16-bit/2-byte value from @stream.
396 *
397 * In order to get the correct byte order for this read operation,
398 * see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order().
399 *
400 * Returns: an unsigned 16-bit/2-byte value read from the @stream or %0 if
401 * an error occurred.
402 **/
403 guint16
404 g_data_input_stream_read_uint16 (GDataInputStream *stream,
405 GCancellable *cancellable,
406 GError **error)
407 {
408 guint16 v;
409  
410 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), 0);
411  
412 if (read_data (stream, &v, 2, cancellable, error))
413 {
414 switch (stream->priv->byte_order)
415 {
416 case G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN:
417 v = GUINT16_FROM_BE (v);
418 break;
419 case G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN:
420 v = GUINT16_FROM_LE (v);
421 break;
422 case G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN:
423 default:
424 break;
425 }
426 return v;
427 }
428  
429 return 0;
430 }
431  
432  
433 /**
434 * g_data_input_stream_read_int32:
435 * @stream: a given #GDataInputStream.
436 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
437 * @error: #GError for error reporting.
438 *
439 * Reads a signed 32-bit/4-byte value from @stream.
440 *
441 * In order to get the correct byte order for this read operation,
442 * see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order().
443 *
444 * If @cancellable is not %NULL, then the operation can be cancelled by
445 * triggering the cancellable object from another thread. If the operation
446 * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
447 *
448 * Returns: a signed 32-bit/4-byte value read from the @stream or %0 if
449 * an error occurred.
450 **/
451 gint32
452 g_data_input_stream_read_int32 (GDataInputStream *stream,
453 GCancellable *cancellable,
454 GError **error)
455 {
456 gint32 v;
457  
458 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), 0);
459  
460 if (read_data (stream, &v, 4, cancellable, error))
461 {
462 switch (stream->priv->byte_order)
463 {
464 case G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN:
465 v = GINT32_FROM_BE (v);
466 break;
467 case G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN:
468 v = GINT32_FROM_LE (v);
469 break;
470 case G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN:
471 default:
472 break;
473 }
474 return v;
475 }
476  
477 return 0;
478 }
479  
480  
481 /**
482 * g_data_input_stream_read_uint32:
483 * @stream: a given #GDataInputStream.
484 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
485 * @error: #GError for error reporting.
486 *
487 * Reads an unsigned 32-bit/4-byte value from @stream.
488 *
489 * In order to get the correct byte order for this read operation,
490 * see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order().
491 *
492 * If @cancellable is not %NULL, then the operation can be cancelled by
493 * triggering the cancellable object from another thread. If the operation
494 * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
495 *
496 * Returns: an unsigned 32-bit/4-byte value read from the @stream or %0 if
497 * an error occurred.
498 **/
499 guint32
500 g_data_input_stream_read_uint32 (GDataInputStream *stream,
501 GCancellable *cancellable,
502 GError **error)
503 {
504 guint32 v;
505  
506 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), 0);
507  
508 if (read_data (stream, &v, 4, cancellable, error))
509 {
510 switch (stream->priv->byte_order)
511 {
512 case G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN:
513 v = GUINT32_FROM_BE (v);
514 break;
515 case G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN:
516 v = GUINT32_FROM_LE (v);
517 break;
518 case G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN:
519 default:
520 break;
521 }
522 return v;
523 }
524  
525 return 0;
526 }
527  
528  
529 /**
530 * g_data_input_stream_read_int64:
531 * @stream: a given #GDataInputStream.
532 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
533 * @error: #GError for error reporting.
534 *
535 * Reads a 64-bit/8-byte value from @stream.
536 *
537 * In order to get the correct byte order for this read operation,
538 * see g_data_input_stream_get_byte_order() and g_data_input_stream_set_byte_order().
539 *
540 * If @cancellable is not %NULL, then the operation can be cancelled by
541 * triggering the cancellable object from another thread. If the operation
542 * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
543 *
544 * Returns: a signed 64-bit/8-byte value read from @stream or %0 if
545 * an error occurred.
546 **/
547 gint64
548 g_data_input_stream_read_int64 (GDataInputStream *stream,
549 GCancellable *cancellable,
550 GError **error)
551 {
552 gint64 v;
553  
554 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), 0);
555  
556 if (read_data (stream, &v, 8, cancellable, error))
557 {
558 switch (stream->priv->byte_order)
559 {
560 case G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN:
561 v = GINT64_FROM_BE (v);
562 break;
563 case G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN:
564 v = GINT64_FROM_LE (v);
565 break;
566 case G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN:
567 default:
568 break;
569 }
570 return v;
571 }
572  
573 return 0;
574 }
575  
576  
577 /**
578 * g_data_input_stream_read_uint64:
579 * @stream: a given #GDataInputStream.
580 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
581 * @error: #GError for error reporting.
582 *
583 * Reads an unsigned 64-bit/8-byte value from @stream.
584 *
585 * In order to get the correct byte order for this read operation,
586 * see g_data_input_stream_get_byte_order().
587 *
588 * If @cancellable is not %NULL, then the operation can be cancelled by
589 * triggering the cancellable object from another thread. If the operation
590 * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
591 *
592 * Returns: an unsigned 64-bit/8-byte read from @stream or %0 if
593 * an error occurred.
594 **/
595 guint64
596 g_data_input_stream_read_uint64 (GDataInputStream *stream,
597 GCancellable *cancellable,
598 GError **error)
599 {
600 guint64 v;
601  
602 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), 0);
603  
604 if (read_data (stream, &v, 8, cancellable, error))
605 {
606 switch (stream->priv->byte_order)
607 {
608 case G_DATA_STREAM_BYTE_ORDER_BIG_ENDIAN:
609 v = GUINT64_FROM_BE (v);
610 break;
611 case G_DATA_STREAM_BYTE_ORDER_LITTLE_ENDIAN:
612 v = GUINT64_FROM_LE (v);
613 break;
614 case G_DATA_STREAM_BYTE_ORDER_HOST_ENDIAN:
615 default:
616 break;
617 }
618 return v;
619 }
620  
621 return 0;
622 }
623  
624 static gssize
625 scan_for_newline (GDataInputStream *stream,
626 gsize *checked_out,
627 gboolean *last_saw_cr_out,
628 int *newline_len_out)
629 {
630 GBufferedInputStream *bstream;
631 GDataInputStreamPrivate *priv;
632 const char *buffer;
633 gsize start, end, peeked;
634 int i;
635 gssize found_pos;
636 int newline_len;
637 gsize available, checked;
638 gboolean last_saw_cr;
639  
640 priv = stream->priv;
641  
642 bstream = G_BUFFERED_INPUT_STREAM (stream);
643  
644 checked = *checked_out;
645 last_saw_cr = *last_saw_cr_out;
646 found_pos = -1;
647 newline_len = 0;
648  
649 start = checked;
650 buffer = (const char*)g_buffered_input_stream_peek_buffer (bstream, &available) + start;
651 end = available;
652 peeked = end - start;
653  
654 for (i = 0; checked < available && i < peeked; i++)
655 {
656 switch (priv->newline_type)
657 {
658 case G_DATA_STREAM_NEWLINE_TYPE_LF:
659 if (buffer[i] == 10)
660 {
661 found_pos = start + i;
662 newline_len = 1;
663 }
664 break;
665 case G_DATA_STREAM_NEWLINE_TYPE_CR:
666 if (buffer[i] == 13)
667 {
668 found_pos = start + i;
669 newline_len = 1;
670 }
671 break;
672 case G_DATA_STREAM_NEWLINE_TYPE_CR_LF:
673 if (last_saw_cr && buffer[i] == 10)
674 {
675 found_pos = start + i - 1;
676 newline_len = 2;
677 }
678 break;
679 default:
680 case G_DATA_STREAM_NEWLINE_TYPE_ANY:
681 if (buffer[i] == 10) /* LF */
682 {
683 if (last_saw_cr)
684 {
685 /* CR LF */
686 found_pos = start + i - 1;
687 newline_len = 2;
688 }
689 else
690 {
691 /* LF */
692 found_pos = start + i;
693 newline_len = 1;
694 }
695 }
696 else if (last_saw_cr)
697 {
698 /* Last was cr, this is not LF, end is CR */
699 found_pos = start + i - 1;
700 newline_len = 1;
701 }
702 /* Don't check for CR here, instead look at last_saw_cr on next byte */
703 break;
704 }
705  
706 last_saw_cr = (buffer[i] == 13);
707  
708 if (found_pos != -1)
709 {
710 *newline_len_out = newline_len;
711 return found_pos;
712 }
713 }
714  
715 checked = end;
716  
717 *checked_out = checked;
718 *last_saw_cr_out = last_saw_cr;
719 return -1;
720 }
721  
722  
723 /**
724 * g_data_input_stream_read_line:
725 * @stream: a given #GDataInputStream.
726 * @length: (out): a #gsize to get the length of the data read in.
727 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
728 * @error: #GError for error reporting.
729 *
730 * Reads a line from the data input stream. Note that no encoding
731 * checks or conversion is performed; the input is not guaranteed to
732 * be UTF-8, and may in fact have embedded NUL characters.
733 *
734 * If @cancellable is not %NULL, then the operation can be cancelled by
735 * triggering the cancellable object from another thread. If the operation
736 * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
737 *
738 * Returns: (nullable) (transfer full) (array zero-terminated=1) (element-type guint8):
739 * a NUL terminated byte array with the line that was read in
740 * (without the newlines). Set @length to a #gsize to get the length
741 * of the read line. On an error, it will return %NULL and @error
742 * will be set. If there's no content to read, it will still return
743 * %NULL, but @error won't be set.
744 **/
745 char *
746 g_data_input_stream_read_line (GDataInputStream *stream,
747 gsize *length,
748 GCancellable *cancellable,
749 GError **error)
750 {
751 GBufferedInputStream *bstream;
752 gsize checked;
753 gboolean last_saw_cr;
754 gssize found_pos;
755 gssize res;
756 int newline_len;
757 char *line;
758  
759 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), NULL);
760  
761 bstream = G_BUFFERED_INPUT_STREAM (stream);
762  
763 newline_len = 0;
764 checked = 0;
765 last_saw_cr = FALSE;
766  
767 while ((found_pos = scan_for_newline (stream, &checked, &last_saw_cr, &newline_len)) == -1)
768 {
769 if (g_buffered_input_stream_get_available (bstream) ==
770 g_buffered_input_stream_get_buffer_size (bstream))
771 g_buffered_input_stream_set_buffer_size (bstream,
772 2 * g_buffered_input_stream_get_buffer_size (bstream));
773  
774 res = g_buffered_input_stream_fill (bstream, -1, cancellable, error);
775 if (res < 0)
776 return NULL;
777 if (res == 0)
778 {
779 /* End of stream */
780 if (g_buffered_input_stream_get_available (bstream) == 0)
781 {
782 if (length)
783 *length = 0;
784 return NULL;
785 }
786 else
787 {
788 found_pos = checked;
789 newline_len = 0;
790 break;
791 }
792 }
793 }
794  
795 line = g_malloc (found_pos + newline_len + 1);
796  
797 res = g_input_stream_read (G_INPUT_STREAM (stream),
798 line,
799 found_pos + newline_len,
800 NULL, NULL);
801 if (length)
802 *length = (gsize)found_pos;
803 g_warn_if_fail (res == found_pos + newline_len);
804 line[found_pos] = 0;
805  
806 return line;
807 }
808  
809 /**
810 * g_data_input_stream_read_line_utf8:
811 * @stream: a given #GDataInputStream.
812 * @length: (out): a #gsize to get the length of the data read in.
813 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
814 * @error: #GError for error reporting.
815 *
816 * Reads a UTF-8 encoded line from the data input stream.
817 *
818 * If @cancellable is not %NULL, then the operation can be cancelled by
819 * triggering the cancellable object from another thread. If the operation
820 * was cancelled, the error %G_IO_ERROR_CANCELLED will be returned.
821 *
822 * Returns: (nullable) (transfer full): a NUL terminated UTF-8 string
823 * with the line that was read in (without the newlines). Set
824 * @length to a #gsize to get the length of the read line. On an
825 * error, it will return %NULL and @error will be set. For UTF-8
826 * conversion errors, the set error domain is %G_CONVERT_ERROR. If
827 * there's no content to read, it will still return %NULL, but @error
828 * won't be set.
829 *
830 * Since: 2.30
831 **/
832 char *
833 g_data_input_stream_read_line_utf8 (GDataInputStream *stream,
834 gsize *length,
835 GCancellable *cancellable,
836 GError **error)
837 {
838 char *res;
839  
840 res = g_data_input_stream_read_line (stream, length, cancellable, error);
841 if (!res)
842 return NULL;
843  
844 if (!g_utf8_validate (res, -1, NULL))
845 {
846 g_set_error_literal (error, G_CONVERT_ERROR,
847 G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
848 _("Invalid byte sequence in conversion input"));
849 g_free (res);
850 return NULL;
851 }
852 return res;
853 }
854  
855 static gssize
856 scan_for_chars (GDataInputStream *stream,
857 gsize *checked_out,
858 const char *stop_chars,
859 gssize stop_chars_len)
860 {
861 GBufferedInputStream *bstream;
862 const char *buffer;
863 gsize start, end, peeked;
864 int i;
865 gsize available, checked;
866 const char *stop_char;
867 const char *stop_end;
868  
869 bstream = G_BUFFERED_INPUT_STREAM (stream);
870 stop_end = stop_chars + stop_chars_len;
871  
872 checked = *checked_out;
873  
874 start = checked;
875 buffer = (const char *)g_buffered_input_stream_peek_buffer (bstream, &available) + start;
876 end = available;
877 peeked = end - start;
878  
879 for (i = 0; checked < available && i < peeked; i++)
880 {
881 for (stop_char = stop_chars; stop_char != stop_end; stop_char++)
882 {
883 if (buffer[i] == *stop_char)
884 return (start + i);
885 }
886 }
887  
888 checked = end;
889  
890 *checked_out = checked;
891 return -1;
892 }
893  
894 /**
895 * g_data_input_stream_read_until:
896 * @stream: a given #GDataInputStream.
897 * @stop_chars: characters to terminate the read.
898 * @length: (out): a #gsize to get the length of the data read in.
899 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
900 * @error: #GError for error reporting.
901 *
902 * Reads a string from the data input stream, up to the first
903 * occurrence of any of the stop characters.
904 *
905 * Note that, in contrast to g_data_input_stream_read_until_async(),
906 * this function consumes the stop character that it finds.
907 *
908 * Don't use this function in new code. Its functionality is
909 * inconsistent with g_data_input_stream_read_until_async(). Both
910 * functions will be marked as deprecated in a future release. Use
911 * g_data_input_stream_read_upto() instead, but note that that function
912 * does not consume the stop character.
913 *
914 * Returns: (transfer full): a string with the data that was read
915 * before encountering any of the stop characters. Set @length to
916 * a #gsize to get the length of the string. This function will
917 * return %NULL on an error.
918 */
919 char *
920 g_data_input_stream_read_until (GDataInputStream *stream,
921 const gchar *stop_chars,
922 gsize *length,
923 GCancellable *cancellable,
924 GError **error)
925 {
926 GBufferedInputStream *bstream;
927 gchar *result;
928  
929 bstream = G_BUFFERED_INPUT_STREAM (stream);
930  
931 result = g_data_input_stream_read_upto (stream, stop_chars, -1,
932 length, cancellable, error);
933  
934 /* If we're not at end of stream then we have a stop_char to consume. */
935 if (result != NULL && g_buffered_input_stream_get_available (bstream) > 0)
936 {
937 gsize res;
938 gchar b;
939  
940 res = g_input_stream_read (G_INPUT_STREAM (stream), &b, 1, NULL, NULL);
941 g_assert (res == 1);
942 }
943  
944 return result;
945 }
946  
947 typedef struct
948 {
949 gboolean last_saw_cr;
950 gsize checked;
951  
952 gchar *stop_chars;
953 gssize stop_chars_len;
954 gsize length;
955 } GDataInputStreamReadData;
956  
957 static void
958 g_data_input_stream_read_complete (GTask *task,
959 gsize read_length,
960 gsize skip_length)
961 {
962 GDataInputStreamReadData *data = g_task_get_task_data (task);
963 GInputStream *stream = g_task_get_source_object (task);
964 char *line = NULL;
965  
966 if (read_length || skip_length)
967 {
968 gssize bytes;
969  
970 data->length = read_length;
971 line = g_malloc (read_length + 1);
972 line[read_length] = '\0';
973  
974 /* we already checked the buffer. this shouldn't fail. */
975 bytes = g_input_stream_read (stream, line, read_length, NULL, NULL);
976 g_assert_cmpint (bytes, ==, read_length);
977  
978 bytes = g_input_stream_skip (stream, skip_length, NULL, NULL);
979 g_assert_cmpint (bytes, ==, skip_length);
980 }
981  
982 g_task_return_pointer (task, line, g_free);
983 g_object_unref (task);
984 }
985  
986 static void
987 g_data_input_stream_read_line_ready (GObject *object,
988 GAsyncResult *result,
989 gpointer user_data)
990 {
991 GTask *task = user_data;
992 GDataInputStreamReadData *data = g_task_get_task_data (task);
993 GBufferedInputStream *buffer = g_task_get_source_object (task);
994 gssize found_pos;
995 gint newline_len;
996  
997 if (result)
998 /* this is a callback. finish the async call. */
999 {
1000 GError *error = NULL;
1001 gssize bytes;
1002  
1003 bytes = g_buffered_input_stream_fill_finish (buffer, result, &error);
1004  
1005 if (bytes <= 0)
1006 {
1007 if (bytes < 0)
1008 /* stream error. */
1009 {
1010 g_task_return_error (task, error);
1011 g_object_unref (task);
1012 return;
1013 }
1014  
1015 g_data_input_stream_read_complete (task, data->checked, 0);
1016 return;
1017 }
1018  
1019 /* only proceed if we got more bytes... */
1020 }
1021  
1022 if (data->stop_chars)
1023 {
1024 found_pos = scan_for_chars (G_DATA_INPUT_STREAM (buffer),
1025 &data->checked,
1026 data->stop_chars,
1027 data->stop_chars_len);
1028 newline_len = 0;
1029 }
1030 else
1031 found_pos = scan_for_newline (G_DATA_INPUT_STREAM (buffer), &data->checked,
1032 &data->last_saw_cr, &newline_len);
1033  
1034 if (found_pos == -1)
1035 /* didn't find a full line; need to buffer some more bytes */
1036 {
1037 gsize size;
1038  
1039 size = g_buffered_input_stream_get_buffer_size (buffer);
1040  
1041 if (g_buffered_input_stream_get_available (buffer) == size)
1042 /* need to grow the buffer */
1043 g_buffered_input_stream_set_buffer_size (buffer, size * 2);
1044  
1045 /* try again */
1046 g_buffered_input_stream_fill_async (buffer, -1,
1047 g_task_get_priority (task),
1048 g_task_get_cancellable (task),
1049 g_data_input_stream_read_line_ready,
1050 user_data);
1051 }
1052 else
1053 {
1054 /* read the line and the EOL. no error is possible. */
1055 g_data_input_stream_read_complete (task, found_pos, newline_len);
1056 }
1057 }
1058  
1059 static void
1060 g_data_input_stream_read_data_free (gpointer user_data)
1061 {
1062 GDataInputStreamReadData *data = user_data;
1063  
1064 g_free (data->stop_chars);
1065 g_slice_free (GDataInputStreamReadData, data);
1066 }
1067  
1068 static void
1069 g_data_input_stream_read_async (GDataInputStream *stream,
1070 const gchar *stop_chars,
1071 gssize stop_chars_len,
1072 gint io_priority,
1073 GCancellable *cancellable,
1074 GAsyncReadyCallback callback,
1075 gpointer user_data)
1076 {
1077 GDataInputStreamReadData *data;
1078 GTask *task;
1079  
1080 data = g_slice_new0 (GDataInputStreamReadData);
1081 if (stop_chars_len == -1)
1082 stop_chars_len = strlen (stop_chars);
1083 data->stop_chars = g_memdup (stop_chars, stop_chars_len);
1084 data->stop_chars_len = stop_chars_len;
1085 data->last_saw_cr = FALSE;
1086  
1087 task = g_task_new (stream, cancellable, callback, user_data);
1088 g_task_set_task_data (task, data, g_data_input_stream_read_data_free);
1089 g_task_set_priority (task, io_priority);
1090  
1091 g_data_input_stream_read_line_ready (NULL, NULL, task);
1092 }
1093  
1094 static gchar *
1095 g_data_input_stream_read_finish (GDataInputStream *stream,
1096 GAsyncResult *result,
1097 gsize *length,
1098 GError **error)
1099 {
1100 GTask *task = G_TASK (result);
1101 gchar *line;
1102  
1103 line = g_task_propagate_pointer (task, error);
1104  
1105 if (length && line)
1106 {
1107 GDataInputStreamReadData *data = g_task_get_task_data (task);
1108  
1109 *length = data->length;
1110 }
1111  
1112 return line;
1113 }
1114  
1115 /**
1116 * g_data_input_stream_read_line_async:
1117 * @stream: a given #GDataInputStream.
1118 * @io_priority: the [I/O priority][io-priority] of the request
1119 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
1120 * @callback: (scope async): callback to call when the request is satisfied.
1121 * @user_data: (closure): the data to pass to callback function.
1122 *
1123 * The asynchronous version of g_data_input_stream_read_line(). It is
1124 * an error to have two outstanding calls to this function.
1125 *
1126 * When the operation is finished, @callback will be called. You
1127 * can then call g_data_input_stream_read_line_finish() to get
1128 * the result of the operation.
1129 *
1130 * Since: 2.20
1131 */
1132 void
1133 g_data_input_stream_read_line_async (GDataInputStream *stream,
1134 gint io_priority,
1135 GCancellable *cancellable,
1136 GAsyncReadyCallback callback,
1137 gpointer user_data)
1138 {
1139 g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
1140 g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
1141  
1142 g_data_input_stream_read_async (stream, NULL, 0, io_priority,
1143 cancellable, callback, user_data);
1144 }
1145  
1146 /**
1147 * g_data_input_stream_read_until_async:
1148 * @stream: a given #GDataInputStream.
1149 * @stop_chars: characters to terminate the read.
1150 * @io_priority: the [I/O priority][io-priority] of the request
1151 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore.
1152 * @callback: (scope async): callback to call when the request is satisfied.
1153 * @user_data: (closure): the data to pass to callback function.
1154 *
1155 * The asynchronous version of g_data_input_stream_read_until().
1156 * It is an error to have two outstanding calls to this function.
1157 *
1158 * Note that, in contrast to g_data_input_stream_read_until(),
1159 * this function does not consume the stop character that it finds. You
1160 * must read it for yourself.
1161 *
1162 * When the operation is finished, @callback will be called. You
1163 * can then call g_data_input_stream_read_until_finish() to get
1164 * the result of the operation.
1165 *
1166 * Don't use this function in new code. Its functionality is
1167 * inconsistent with g_data_input_stream_read_until(). Both functions
1168 * will be marked as deprecated in a future release. Use
1169 * g_data_input_stream_read_upto_async() instead.
1170 *
1171 * Since: 2.20
1172 */
1173 void
1174 g_data_input_stream_read_until_async (GDataInputStream *stream,
1175 const gchar *stop_chars,
1176 gint io_priority,
1177 GCancellable *cancellable,
1178 GAsyncReadyCallback callback,
1179 gpointer user_data)
1180 {
1181 g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
1182 g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
1183 g_return_if_fail (stop_chars != NULL);
1184  
1185 g_data_input_stream_read_async (stream, stop_chars, -1, io_priority,
1186 cancellable, callback, user_data);
1187 }
1188  
1189 /**
1190 * g_data_input_stream_read_line_finish:
1191 * @stream: a given #GDataInputStream.
1192 * @result: the #GAsyncResult that was provided to the callback.
1193 * @length: (out): a #gsize to get the length of the data read in.
1194 * @error: #GError for error reporting.
1195 *
1196 * Finish an asynchronous call started by
1197 * g_data_input_stream_read_line_async(). Note the warning about
1198 * string encoding in g_data_input_stream_read_line() applies here as
1199 * well.
1200 *
1201 * Returns: (nullable) (transfer full) (array zero-terminated=1) (element-type guint8):
1202 * a NUL-terminated byte array with the line that was read in
1203 * (without the newlines). Set @length to a #gsize to get the length
1204 * of the read line. On an error, it will return %NULL and @error
1205 * will be set. If there's no content to read, it will still return
1206 * %NULL, but @error won't be set.
1207 *
1208 * Since: 2.20
1209 */
1210 gchar *
1211 g_data_input_stream_read_line_finish (GDataInputStream *stream,
1212 GAsyncResult *result,
1213 gsize *length,
1214 GError **error)
1215 {
1216 g_return_val_if_fail (g_task_is_valid (result, stream), NULL);
1217  
1218 return g_data_input_stream_read_finish (stream, result, length, error);
1219 }
1220  
1221 /**
1222 * g_data_input_stream_read_line_finish_utf8:
1223 * @stream: a given #GDataInputStream.
1224 * @result: the #GAsyncResult that was provided to the callback.
1225 * @length: (out): a #gsize to get the length of the data read in.
1226 * @error: #GError for error reporting.
1227 *
1228 * Finish an asynchronous call started by
1229 * g_data_input_stream_read_line_async().
1230 *
1231 * Returns: (nullable) (transfer full): a string with the line that
1232 * was read in (without the newlines). Set @length to a #gsize to
1233 * get the length of the read line. On an error, it will return
1234 * %NULL and @error will be set. For UTF-8 conversion errors, the set
1235 * error domain is %G_CONVERT_ERROR. If there's no content to read,
1236 * it will still return %NULL, but @error won't be set.
1237 *
1238 * Since: 2.30
1239 */
1240 gchar *
1241 g_data_input_stream_read_line_finish_utf8 (GDataInputStream *stream,
1242 GAsyncResult *result,
1243 gsize *length,
1244 GError **error)
1245 {
1246 gchar *res;
1247  
1248 res = g_data_input_stream_read_line_finish (stream, result, length, error);
1249 if (!res)
1250 return NULL;
1251  
1252 if (!g_utf8_validate (res, -1, NULL))
1253 {
1254 g_set_error_literal (error, G_CONVERT_ERROR,
1255 G_CONVERT_ERROR_ILLEGAL_SEQUENCE,
1256 _("Invalid byte sequence in conversion input"));
1257 g_free (res);
1258 return NULL;
1259 }
1260 return res;
1261 }
1262  
1263 /**
1264 * g_data_input_stream_read_until_finish:
1265 * @stream: a given #GDataInputStream.
1266 * @result: the #GAsyncResult that was provided to the callback.
1267 * @length: (out): a #gsize to get the length of the data read in.
1268 * @error: #GError for error reporting.
1269 *
1270 * Finish an asynchronous call started by
1271 * g_data_input_stream_read_until_async().
1272 *
1273 * Since: 2.20
1274 *
1275 * Returns: (transfer full): a string with the data that was read
1276 * before encountering any of the stop characters. Set @length to
1277 * a #gsize to get the length of the string. This function will
1278 * return %NULL on an error.
1279 */
1280 gchar *
1281 g_data_input_stream_read_until_finish (GDataInputStream *stream,
1282 GAsyncResult *result,
1283 gsize *length,
1284 GError **error)
1285 {
1286 g_return_val_if_fail (g_task_is_valid (result, stream), NULL);
1287  
1288 return g_data_input_stream_read_finish (stream, result, length, error);
1289 }
1290  
1291 /**
1292 * g_data_input_stream_read_upto:
1293 * @stream: a #GDataInputStream
1294 * @stop_chars: characters to terminate the read
1295 * @stop_chars_len: length of @stop_chars. May be -1 if @stop_chars is
1296 * nul-terminated
1297 * @length: (out): a #gsize to get the length of the data read in
1298 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore
1299 * @error: #GError for error reporting
1300 *
1301 * Reads a string from the data input stream, up to the first
1302 * occurrence of any of the stop characters.
1303 *
1304 * In contrast to g_data_input_stream_read_until(), this function
1305 * does not consume the stop character. You have to use
1306 * g_data_input_stream_read_byte() to get it before calling
1307 * g_data_input_stream_read_upto() again.
1308 *
1309 * Note that @stop_chars may contain '\0' if @stop_chars_len is
1310 * specified.
1311 *
1312 * Returns: (transfer full): a string with the data that was read
1313 * before encountering any of the stop characters. Set @length to
1314 * a #gsize to get the length of the string. This function will
1315 * return %NULL on an error
1316 *
1317 * Since: 2.26
1318 */
1319 char *
1320 g_data_input_stream_read_upto (GDataInputStream *stream,
1321 const gchar *stop_chars,
1322 gssize stop_chars_len,
1323 gsize *length,
1324 GCancellable *cancellable,
1325 GError **error)
1326 {
1327 GBufferedInputStream *bstream;
1328 gsize checked;
1329 gssize found_pos;
1330 gssize res;
1331 char *data_until;
1332  
1333 g_return_val_if_fail (G_IS_DATA_INPUT_STREAM (stream), NULL);
1334  
1335 if (stop_chars_len < 0)
1336 stop_chars_len = strlen (stop_chars);
1337  
1338 bstream = G_BUFFERED_INPUT_STREAM (stream);
1339  
1340 checked = 0;
1341  
1342 while ((found_pos = scan_for_chars (stream, &checked, stop_chars, stop_chars_len)) == -1)
1343 {
1344 if (g_buffered_input_stream_get_available (bstream) ==
1345 g_buffered_input_stream_get_buffer_size (bstream))
1346 g_buffered_input_stream_set_buffer_size (bstream,
1347 2 * g_buffered_input_stream_get_buffer_size (bstream));
1348  
1349 res = g_buffered_input_stream_fill (bstream, -1, cancellable, error);
1350 if (res < 0)
1351 return NULL;
1352 if (res == 0)
1353 {
1354 /* End of stream */
1355 if (g_buffered_input_stream_get_available (bstream) == 0)
1356 {
1357 if (length)
1358 *length = 0;
1359 return NULL;
1360 }
1361 else
1362 {
1363 found_pos = checked;
1364 break;
1365 }
1366 }
1367 }
1368  
1369 data_until = g_malloc (found_pos + 1);
1370  
1371 res = g_input_stream_read (G_INPUT_STREAM (stream),
1372 data_until,
1373 found_pos,
1374 NULL, NULL);
1375 if (length)
1376 *length = (gsize)found_pos;
1377 g_warn_if_fail (res == found_pos);
1378 data_until[found_pos] = 0;
1379  
1380 return data_until;
1381 }
1382  
1383 /**
1384 * g_data_input_stream_read_upto_async:
1385 * @stream: a #GDataInputStream
1386 * @stop_chars: characters to terminate the read
1387 * @stop_chars_len: length of @stop_chars. May be -1 if @stop_chars is
1388 * nul-terminated
1389 * @io_priority: the [I/O priority][io-priority] of the request
1390 * @cancellable: (allow-none): optional #GCancellable object, %NULL to ignore
1391 * @callback: (scope async): callback to call when the request is satisfied
1392 * @user_data: (closure): the data to pass to callback function
1393 *
1394 * The asynchronous version of g_data_input_stream_read_upto().
1395 * It is an error to have two outstanding calls to this function.
1396 *
1397 * In contrast to g_data_input_stream_read_until(), this function
1398 * does not consume the stop character. You have to use
1399 * g_data_input_stream_read_byte() to get it before calling
1400 * g_data_input_stream_read_upto() again.
1401 *
1402 * Note that @stop_chars may contain '\0' if @stop_chars_len is
1403 * specified.
1404 *
1405 * When the operation is finished, @callback will be called. You
1406 * can then call g_data_input_stream_read_upto_finish() to get
1407 * the result of the operation.
1408 *
1409 * Since: 2.26
1410 */
1411 void
1412 g_data_input_stream_read_upto_async (GDataInputStream *stream,
1413 const gchar *stop_chars,
1414 gssize stop_chars_len,
1415 gint io_priority,
1416 GCancellable *cancellable,
1417 GAsyncReadyCallback callback,
1418 gpointer user_data)
1419 {
1420 g_return_if_fail (G_IS_DATA_INPUT_STREAM (stream));
1421 g_return_if_fail (cancellable == NULL || G_IS_CANCELLABLE (cancellable));
1422 g_return_if_fail (stop_chars != NULL);
1423  
1424 g_data_input_stream_read_async (stream, stop_chars, stop_chars_len, io_priority,
1425 cancellable, callback, user_data);
1426 }
1427  
1428 /**
1429 * g_data_input_stream_read_upto_finish:
1430 * @stream: a #GDataInputStream
1431 * @result: the #GAsyncResult that was provided to the callback
1432 * @length: (out): a #gsize to get the length of the data read in
1433 * @error: #GError for error reporting
1434 *
1435 * Finish an asynchronous call started by
1436 * g_data_input_stream_read_upto_async().
1437 *
1438 * Note that this function does not consume the stop character. You
1439 * have to use g_data_input_stream_read_byte() to get it before calling
1440 * g_data_input_stream_read_upto_async() again.
1441 *
1442 * Returns: (transfer full): a string with the data that was read
1443 * before encountering any of the stop characters. Set @length to
1444 * a #gsize to get the length of the string. This function will
1445 * return %NULL on an error.
1446 *
1447 * Since: 2.24
1448 */
1449 gchar *
1450 g_data_input_stream_read_upto_finish (GDataInputStream *stream,
1451 GAsyncResult *result,
1452 gsize *length,
1453 GError **error)
1454 {
1455 g_return_val_if_fail (g_task_is_valid (result, stream), NULL);
1456  
1457 return g_data_input_stream_read_finish (stream, result, length, error);
1458 }