1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>LCOV - lcov.info - /usr/include/c++/4.3/streambuf</title>
<link rel="stylesheet" type="text/css" href="../../../../gcov.css">
</head>
<body>
<table width="100%" border=0 cellspacing=0 cellpadding=0>
<tr><td class="title">LTP GCOV extension - code coverage report</td></tr>
<tr><td class="ruler"><img src="../../../../glass.png" width=3 height=3 alt=""></td></tr>
<tr>
<td width="100%">
<table cellpadding=1 border=0 width="100%">
<tr>
<td class="headerItem" width="20%">Current view:</td>
<td class="headerValue" width="80%" colspan=4><a href="../../../../index.html">directory</a> - <a href="index.html">usr/include/c++/4.3</a> - streambuf</td>
</tr>
<tr>
<td class="headerItem" width="20%">Test:</td>
<td class="headerValue" width="80%" colspan=4>lcov.info</td>
</tr>
<tr>
<td class="headerItem" width="20%">Date:</td>
<td class="headerValue" width="20%">2008-08-14</td>
<td width="20%"></td>
<td class="headerItem" width="20%">Instrumented lines:</td>
<td class="headerValue" width="20%">36</td>
</tr>
<tr>
<td class="headerItem" width="20%">Code covered:</td>
<td class="headerValue" width="20%">0.0 %</td>
<td width="20%"></td>
<td class="headerItem" width="20%">Executed lines:</td>
<td class="headerValue" width="20%">0</td>
</tr>
</table>
</td>
</tr>
<tr><td class="ruler"><img src="../../../../glass.png" width=3 height=3 alt=""></td></tr>
</table>
<table cellpadding=0 cellspacing=0 border=0>
<tr>
<td><br></td>
</tr>
<tr>
<td><pre class="source">
<span class="lineNum"> 1 </span> : // Stream buffer classes -*- C++ -*-
<span class="lineNum"> 2 </span> :
<span class="lineNum"> 3 </span> : // Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
<span class="lineNum"> 4 </span> : // 2006, 2007, 2008 Free Software Foundation, Inc.
<span class="lineNum"> 5 </span> : //
<span class="lineNum"> 6 </span> : // This file is part of the GNU ISO C++ Library. This library is free
<span class="lineNum"> 7 </span> : // software; you can redistribute it and/or modify it under the
<span class="lineNum"> 8 </span> : // terms of the GNU General Public License as published by the
<span class="lineNum"> 9 </span> : // Free Software Foundation; either version 2, or (at your option)
<span class="lineNum"> 10 </span> : // any later version.
<span class="lineNum"> 11 </span> :
<span class="lineNum"> 12 </span> : // This library is distributed in the hope that it will be useful,
<span class="lineNum"> 13 </span> : // but WITHOUT ANY WARRANTY; without even the implied warranty of
<span class="lineNum"> 14 </span> : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
<span class="lineNum"> 15 </span> : // GNU General Public License for more details.
<span class="lineNum"> 16 </span> :
<span class="lineNum"> 17 </span> : // You should have received a copy of the GNU General Public License
<span class="lineNum"> 18 </span> : // along with this library; see the file COPYING. If not, write to
<span class="lineNum"> 19 </span> : // the Free Software Foundation, 51 Franklin Street, Fifth Floor,
<span class="lineNum"> 20 </span> : // Boston, MA 02110-1301, USA.
<span class="lineNum"> 21 </span> :
<span class="lineNum"> 22 </span> : // As a special exception, you may use this file as part of a free software
<span class="lineNum"> 23 </span> : // library without restriction. Specifically, if other files instantiate
<span class="lineNum"> 24 </span> : // templates or use macros or inline functions from this file, or you compile
<span class="lineNum"> 25 </span> : // this file and link it with other files to produce an executable, this
<span class="lineNum"> 26 </span> : // file does not by itself cause the resulting executable to be covered by
<span class="lineNum"> 27 </span> : // the GNU General Public License. This exception does not however
<span class="lineNum"> 28 </span> : // invalidate any other reasons why the executable file might be covered by
<span class="lineNum"> 29 </span> : // the GNU General Public License.
<span class="lineNum"> 30 </span> :
<span class="lineNum"> 31 </span> : /** @file streambuf
<span class="lineNum"> 32 </span> : * This is a Standard C++ Library header.
<span class="lineNum"> 33 </span> : */
<span class="lineNum"> 34 </span> :
<span class="lineNum"> 35 </span> : //
<span class="lineNum"> 36 </span> : // ISO C++ 14882: 27.5 Stream buffers
<span class="lineNum"> 37 </span> : //
<span class="lineNum"> 38 </span> :
<span class="lineNum"> 39 </span> : #ifndef _GLIBXX_STREAMBUF
<span class="lineNum"> 40 </span> : #define _GLIBXX_STREAMBUF 1
<span class="lineNum"> 41 </span> :
<span class="lineNum"> 42 </span> : #pragma GCC system_header
<span class="lineNum"> 43 </span> :
<span class="lineNum"> 44 </span> : #include <bits/c++config.h>
<span class="lineNum"> 45 </span> : #include <iosfwd>
<span class="lineNum"> 46 </span> : #include <bits/localefwd.h>
<span class="lineNum"> 47 </span> : #include <bits/ios_base.h>
<span class="lineNum"> 48 </span> : #include <bits/cpp_type_traits.h>
<span class="lineNum"> 49 </span> : #include <ext/type_traits.h>
<span class="lineNum"> 50 </span> :
<span class="lineNum"> 51 </span> : _GLIBCXX_BEGIN_NAMESPACE(std)
<span class="lineNum"> 52 </span> :
<span class="lineNum"> 53 </span> : template<typename _CharT, typename _Traits>
<span class="lineNum"> 54 </span> : streamsize
<span class="lineNum"> 55 </span> : __copy_streambufs_eof(basic_streambuf<_CharT, _Traits>*,
<span class="lineNum"> 56 </span> : basic_streambuf<_CharT, _Traits>*, bool&);
<span class="lineNum"> 57 </span> :
<span class="lineNum"> 58 </span> : /**
<span class="lineNum"> 59 </span> : * @brief The actual work of input and output (interface).
<span class="lineNum"> 60 </span> : *
<span class="lineNum"> 61 </span> : * This is a base class. Derived stream buffers each control a
<span class="lineNum"> 62 </span> : * pair of character sequences: one for input, and one for output.
<span class="lineNum"> 63 </span> : *
<span class="lineNum"> 64 </span> : * Section [27.5.1] of the standard describes the requirements and
<span class="lineNum"> 65 </span> : * behavior of stream buffer classes. That section (three paragraphs)
<span class="lineNum"> 66 </span> : * is reproduced here, for simplicity and accuracy.
<span class="lineNum"> 67 </span> : *
<span class="lineNum"> 68 </span> : * -# Stream buffers can impose various constraints on the sequences
<span class="lineNum"> 69 </span> : * they control. Some constraints are:
<span class="lineNum"> 70 </span> : * - The controlled input sequence can be not readable.
<span class="lineNum"> 71 </span> : * - The controlled output sequence can be not writable.
<span class="lineNum"> 72 </span> : * - The controlled sequences can be associated with the contents of
<span class="lineNum"> 73 </span> : * other representations for character sequences, such as external
<span class="lineNum"> 74 </span> : * files.
<span class="lineNum"> 75 </span> : * - The controlled sequences can support operations @e directly to or
<span class="lineNum"> 76 </span> : * from associated sequences.
<span class="lineNum"> 77 </span> : * - The controlled sequences can impose limitations on how the
<span class="lineNum"> 78 </span> : * program can read characters from a sequence, write characters to
<span class="lineNum"> 79 </span> : * a sequence, put characters back into an input sequence, or alter
<span class="lineNum"> 80 </span> : * the stream position.
<span class="lineNum"> 81 </span> : * .
<span class="lineNum"> 82 </span> : * -# Each sequence is characterized by three pointers which, if non-null,
<span class="lineNum"> 83 </span> : * all point into the same @c charT array object. The array object
<span class="lineNum"> 84 </span> : * represents, at any moment, a (sub)sequence of characters from the
<span class="lineNum"> 85 </span> : * sequence. Operations performed on a sequence alter the values
<span class="lineNum"> 86 </span> : * stored in these pointers, perform reads and writes directly to or
<span class="lineNum"> 87 </span> : * from associated sequences, and alter "the stream position" and
<span class="lineNum"> 88 </span> : * conversion state as needed to maintain this subsequence relationship.
<span class="lineNum"> 89 </span> : * The three pointers are:
<span class="lineNum"> 90 </span> : * - the <em>beginning pointer</em>, or lowest element address in the
<span class="lineNum"> 91 </span> : * array (called @e xbeg here);
<span class="lineNum"> 92 </span> : * - the <em>next pointer</em>, or next element address that is a
<span class="lineNum"> 93 </span> : * current candidate for reading or writing (called @e xnext here);
<span class="lineNum"> 94 </span> : * - the <em>end pointer</em>, or first element address beyond the
<span class="lineNum"> 95 </span> : * end of the array (called @e xend here).
<span class="lineNum"> 96 </span> : * .
<span class="lineNum"> 97 </span> : * -# The following semantic constraints shall always apply for any set
<span class="lineNum"> 98 </span> : * of three pointers for a sequence, using the pointer names given
<span class="lineNum"> 99 </span> : * immediately above:
<span class="lineNum"> 100 </span> : * - If @e xnext is not a null pointer, then @e xbeg and @e xend shall
<span class="lineNum"> 101 </span> : * also be non-null pointers into the same @c charT array, as
<span class="lineNum"> 102 </span> : * described above; otherwise, @e xbeg and @e xend shall also be null.
<span class="lineNum"> 103 </span> : * - If @e xnext is not a null pointer and @e xnext < @e xend for an
<span class="lineNum"> 104 </span> : * output sequence, then a <em>write position</em> is available.
<span class="lineNum"> 105 </span> : * In this case, @e *xnext shall be assignable as the next element
<span class="lineNum"> 106 </span> : * to write (to put, or to store a character value, into the sequence).
<span class="lineNum"> 107 </span> : * - If @e xnext is not a null pointer and @e xbeg < @e xnext for an
<span class="lineNum"> 108 </span> : * input sequence, then a <em>putback position</em> is available.
<span class="lineNum"> 109 </span> : * In this case, @e xnext[-1] shall have a defined value and is the
<span class="lineNum"> 110 </span> : * next (preceding) element to store a character that is put back
<span class="lineNum"> 111 </span> : * into the input sequence.
<span class="lineNum"> 112 </span> : * - If @e xnext is not a null pointer and @e xnext< @e xend for an
<span class="lineNum"> 113 </span> : * input sequence, then a <em>read position</em> is available.
<span class="lineNum"> 114 </span> : * In this case, @e *xnext shall have a defined value and is the
<span class="lineNum"> 115 </span> : * next element to read (to get, or to obtain a character value,
<span class="lineNum"> 116 </span> : * from the sequence).
<span class="lineNum"> 117 </span> : */
<span class="lineNum"> 118 </span> : template<typename _CharT, typename _Traits>
<span class="lineNum"> 119 </span> : class basic_streambuf
<span class="lineNum"> 120 </span> : {
<span class="lineNum"> 121 </span> : public:
<span class="lineNum"> 122 </span> : //@{
<span class="lineNum"> 123 </span> : /**
<span class="lineNum"> 124 </span> : * These are standard types. They permit a standardized way of
<span class="lineNum"> 125 </span> : * referring to names of (or names dependant on) the template
<span class="lineNum"> 126 </span> : * parameters, which are specific to the implementation.
<span class="lineNum"> 127 </span> : */
<span class="lineNum"> 128 </span> : typedef _CharT char_type;
<span class="lineNum"> 129 </span> : typedef _Traits traits_type;
<span class="lineNum"> 130 </span> : typedef typename traits_type::int_type int_type;
<span class="lineNum"> 131 </span> : typedef typename traits_type::pos_type pos_type;
<span class="lineNum"> 132 </span> : typedef typename traits_type::off_type off_type;
<span class="lineNum"> 133 </span> : //@}
<span class="lineNum"> 134 </span> :
<span class="lineNum"> 135 </span> : //@{
<span class="lineNum"> 136 </span> : /// This is a non-standard type.
<span class="lineNum"> 137 </span> : typedef basic_streambuf<char_type, traits_type> __streambuf_type;
<span class="lineNum"> 138 </span> : //@}
<span class="lineNum"> 139 </span> :
<span class="lineNum"> 140 </span> : friend class basic_ios<char_type, traits_type>;
<span class="lineNum"> 141 </span> : friend class basic_istream<char_type, traits_type>;
<span class="lineNum"> 142 </span> : friend class basic_ostream<char_type, traits_type>;
<span class="lineNum"> 143 </span> : friend class istreambuf_iterator<char_type, traits_type>;
<span class="lineNum"> 144 </span> : friend class ostreambuf_iterator<char_type, traits_type>;
<span class="lineNum"> 145 </span> :
<span class="lineNum"> 146 </span> : friend streamsize
<span class="lineNum"> 147 </span> : __copy_streambufs_eof<>(__streambuf_type*, __streambuf_type*, bool&);
<span class="lineNum"> 148 </span> :
<span class="lineNum"> 149 </span> : template<bool _IsMove, typename _CharT2>
<span class="lineNum"> 150 </span> : friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
<span class="lineNum"> 151 </span> : _CharT2*>::__type
<span class="lineNum"> 152 </span> : __copy_move_a2(istreambuf_iterator<_CharT2>,
<span class="lineNum"> 153 </span> : istreambuf_iterator<_CharT2>, _CharT2*);
<span class="lineNum"> 154 </span> :
<span class="lineNum"> 155 </span> : template<typename _CharT2>
<span class="lineNum"> 156 </span> : friend typename __gnu_cxx::__enable_if<__is_char<_CharT2>::__value,
<span class="lineNum"> 157 </span> : istreambuf_iterator<_CharT2> >::__type
<span class="lineNum"> 158 </span> : find(istreambuf_iterator<_CharT2>, istreambuf_iterator<_CharT2>,
<span class="lineNum"> 159 </span> : const _CharT2&);
<span class="lineNum"> 160 </span> :
<span class="lineNum"> 161 </span> : template<typename _CharT2, typename _Traits2>
<span class="lineNum"> 162 </span> : friend basic_istream<_CharT2, _Traits2>&
<span class="lineNum"> 163 </span> : operator>>(basic_istream<_CharT2, _Traits2>&, _CharT2*);
<span class="lineNum"> 164 </span> :
<span class="lineNum"> 165 </span> : template<typename _CharT2, typename _Traits2, typename _Alloc>
<span class="lineNum"> 166 </span> : friend basic_istream<_CharT2, _Traits2>&
<span class="lineNum"> 167 </span> : operator>>(basic_istream<_CharT2, _Traits2>&,
<span class="lineNum"> 168 </span> : basic_string<_CharT2, _Traits2, _Alloc>&);
<span class="lineNum"> 169 </span> :
<span class="lineNum"> 170 </span> : template<typename _CharT2, typename _Traits2, typename _Alloc>
<span class="lineNum"> 171 </span> : friend basic_istream<_CharT2, _Traits2>&
<span class="lineNum"> 172 </span> : getline(basic_istream<_CharT2, _Traits2>&,
<span class="lineNum"> 173 </span> : basic_string<_CharT2, _Traits2, _Alloc>&, _CharT2);
<span class="lineNum"> 174 </span> :
<span class="lineNum"> 175 </span> : protected:
<span class="lineNum"> 176 </span> : //@{
<span class="lineNum"> 177 </span> : /**
<span class="lineNum"> 178 </span> : * This is based on _IO_FILE, just reordered to be more consistent,
<span class="lineNum"> 179 </span> : * and is intended to be the most minimal abstraction for an
<span class="lineNum"> 180 </span> : * internal buffer.
<span class="lineNum"> 181 </span> : * - get == input == read
<span class="lineNum"> 182 </span> : * - put == output == write
<span class="lineNum"> 183 </span> : */
<span class="lineNum"> 184 </span> : char_type* _M_in_beg; // Start of get area.
<span class="lineNum"> 185 </span> : char_type* _M_in_cur; // Current read area.
<span class="lineNum"> 186 </span> : char_type* _M_in_end; // End of get area.
<span class="lineNum"> 187 </span> : char_type* _M_out_beg; // Start of put area.
<span class="lineNum"> 188 </span> : char_type* _M_out_cur; // Current put area.
<span class="lineNum"> 189 </span> : char_type* _M_out_end; // End of put area.
<span class="lineNum"> 190 </span> :
<span class="lineNum"> 191 </span> : /// Current locale setting.
<span class="lineNum"> 192 </span> : locale _M_buf_locale;
<span class="lineNum"> 193 </span> :
<span class="lineNum"> 194 </span> : public:
<span class="lineNum"> 195 </span> : /// Destructor deallocates no buffer space.
<span class="lineNum"> 196 </span> : virtual
<span class="lineNum"> 197 </span><span class="lineNoCov"> 0 : ~basic_streambuf() </span>
<span class="lineNum"> 198 </span><span class="lineNoCov"> 0 : { }</span>
<span class="lineNum"> 199 </span> :
<span class="lineNum"> 200 </span> : // [27.5.2.2.1] locales
<span class="lineNum"> 201 </span> : /**
<span class="lineNum"> 202 </span> : * @brief Entry point for imbue().
<span class="lineNum"> 203 </span> : * @param loc The new locale.
<span class="lineNum"> 204 </span> : * @return The previous locale.
<span class="lineNum"> 205 </span> : *
<span class="lineNum"> 206 </span> : * Calls the derived imbue(loc).
<span class="lineNum"> 207 </span> : */
<span class="lineNum"> 208 </span> : locale
<span class="lineNum"> 209 </span> : pubimbue(const locale &__loc)
<span class="lineNum"> 210 </span> : {
<span class="lineNum"> 211 </span> : locale __tmp(this->getloc());
<span class="lineNum"> 212 </span> : this->imbue(__loc);
<span class="lineNum"> 213 </span> : _M_buf_locale = __loc;
<span class="lineNum"> 214 </span> : return __tmp;
<span class="lineNum"> 215 </span> : }
<span class="lineNum"> 216 </span> :
<span class="lineNum"> 217 </span> : /**
<span class="lineNum"> 218 </span> : * @brief Locale access.
<span class="lineNum"> 219 </span> : * @return The current locale in effect.
<span class="lineNum"> 220 </span> : *
<span class="lineNum"> 221 </span> : * If pubimbue(loc) has been called, then the most recent @c loc
<span class="lineNum"> 222 </span> : * is returned. Otherwise the global locale in effect at the time
<span class="lineNum"> 223 </span> : * of construction is returned.
<span class="lineNum"> 224 </span> : */
<span class="lineNum"> 225 </span> : locale
<span class="lineNum"> 226 </span> : getloc() const
<span class="lineNum"> 227 </span> : { return _M_buf_locale; }
<span class="lineNum"> 228 </span> :
<span class="lineNum"> 229 </span> : // [27.5.2.2.2] buffer management and positioning
<span class="lineNum"> 230 </span> : //@{
<span class="lineNum"> 231 </span> : /**
<span class="lineNum"> 232 </span> : * @brief Entry points for derived buffer functions.
<span class="lineNum"> 233 </span> : *
<span class="lineNum"> 234 </span> : * The public versions of @c pubfoo dispatch to the protected
<span class="lineNum"> 235 </span> : * derived @c foo member functions, passing the arguments (if any)
<span class="lineNum"> 236 </span> : * and returning the result unchanged.
<span class="lineNum"> 237 </span> : */
<span class="lineNum"> 238 </span> : __streambuf_type*
<span class="lineNum"> 239 </span> : pubsetbuf(char_type* __s, streamsize __n)
<span class="lineNum"> 240 </span> : { return this->setbuf(__s, __n); }
<span class="lineNum"> 241 </span> :
<span class="lineNum"> 242 </span> : pos_type
<span class="lineNum"> 243 </span> : pubseekoff(off_type __off, ios_base::seekdir __way,
<span class="lineNum"> 244 </span> : ios_base::openmode __mode = ios_base::in | ios_base::out)
<span class="lineNum"> 245 </span> : { return this->seekoff(__off, __way, __mode); }
<span class="lineNum"> 246 </span> :
<span class="lineNum"> 247 </span> : pos_type
<span class="lineNum"> 248 </span> : pubseekpos(pos_type __sp,
<span class="lineNum"> 249 </span> : ios_base::openmode __mode = ios_base::in | ios_base::out)
<span class="lineNum"> 250 </span> : { return this->seekpos(__sp, __mode); }
<span class="lineNum"> 251 </span> :
<span class="lineNum"> 252 </span> : int
<span class="lineNum"> 253 </span> : pubsync() { return this->sync(); }
<span class="lineNum"> 254 </span> : //@}
<span class="lineNum"> 255 </span> :
<span class="lineNum"> 256 </span> : // [27.5.2.2.3] get area
<span class="lineNum"> 257 </span> : /**
<span class="lineNum"> 258 </span> : * @brief Looking ahead into the stream.
<span class="lineNum"> 259 </span> : * @return The number of characters available.
<span class="lineNum"> 260 </span> : *
<span class="lineNum"> 261 </span> : * If a read position is available, returns the number of characters
<span class="lineNum"> 262 </span> : * available for reading before the buffer must be refilled.
<span class="lineNum"> 263 </span> : * Otherwise returns the derived @c showmanyc().
<span class="lineNum"> 264 </span> : */
<span class="lineNum"> 265 </span> : streamsize
<span class="lineNum"> 266 </span> : in_avail()
<span class="lineNum"> 267 </span> : {
<span class="lineNum"> 268 </span> : const streamsize __ret = this->egptr() - this->gptr();
<span class="lineNum"> 269 </span> : return __ret ? __ret : this->showmanyc();
<span class="lineNum"> 270 </span> : }
<span class="lineNum"> 271 </span> :
<span class="lineNum"> 272 </span> : /**
<span class="lineNum"> 273 </span> : * @brief Getting the next character.
<span class="lineNum"> 274 </span> : * @return The next character, or eof.
<span class="lineNum"> 275 </span> : *
<span class="lineNum"> 276 </span> : * Calls @c sbumpc(), and if that function returns
<span class="lineNum"> 277 </span> : * @c traits::eof(), so does this function. Otherwise, @c sgetc().
<span class="lineNum"> 278 </span> : */
<span class="lineNum"> 279 </span> : int_type
<span class="lineNum"> 280 </span> : snextc()
<span class="lineNum"> 281 </span> : {
<span class="lineNum"> 282 </span> : int_type __ret = traits_type::eof();
<span class="lineNum"> 283 </span> : if (__builtin_expect(!traits_type::eq_int_type(this->sbumpc(),
<span class="lineNum"> 284 </span> : __ret), true))
<span class="lineNum"> 285 </span> : __ret = this->sgetc();
<span class="lineNum"> 286 </span> : return __ret;
<span class="lineNum"> 287 </span> : }
<span class="lineNum"> 288 </span> :
<span class="lineNum"> 289 </span> : /**
<span class="lineNum"> 290 </span> : * @brief Getting the next character.
<span class="lineNum"> 291 </span> : * @return The next character, or eof.
<span class="lineNum"> 292 </span> : *
<span class="lineNum"> 293 </span> : * If the input read position is available, returns that character
<span class="lineNum"> 294 </span> : * and increments the read pointer, otherwise calls and returns
<span class="lineNum"> 295 </span> : * @c uflow().
<span class="lineNum"> 296 </span> : */
<span class="lineNum"> 297 </span> : int_type
<span class="lineNum"> 298 </span> : sbumpc()
<span class="lineNum"> 299 </span> : {
<span class="lineNum"> 300 </span> : int_type __ret;
<span class="lineNum"> 301 </span> : if (__builtin_expect(this->gptr() < this->egptr(), true))
<span class="lineNum"> 302 </span> : {
<span class="lineNum"> 303 </span> : __ret = traits_type::to_int_type(*this->gptr());
<span class="lineNum"> 304 </span> : this->gbump(1);
<span class="lineNum"> 305 </span> : }
<span class="lineNum"> 306 </span> : else
<span class="lineNum"> 307 </span> : __ret = this->uflow();
<span class="lineNum"> 308 </span> : return __ret;
<span class="lineNum"> 309 </span> : }
<span class="lineNum"> 310 </span> :
<span class="lineNum"> 311 </span> : /**
<span class="lineNum"> 312 </span> : * @brief Getting the next character.
<span class="lineNum"> 313 </span> : * @return The next character, or eof.
<span class="lineNum"> 314 </span> : *
<span class="lineNum"> 315 </span> : * If the input read position is available, returns that character,
<span class="lineNum"> 316 </span> : * otherwise calls and returns @c underflow(). Does not move the
<span class="lineNum"> 317 </span> : * read position after fetching the character.
<span class="lineNum"> 318 </span> : */
<span class="lineNum"> 319 </span> : int_type
<span class="lineNum"> 320 </span> : sgetc()
<span class="lineNum"> 321 </span> : {
<span class="lineNum"> 322 </span> : int_type __ret;
<span class="lineNum"> 323 </span> : if (__builtin_expect(this->gptr() < this->egptr(), true))
<span class="lineNum"> 324 </span> : __ret = traits_type::to_int_type(*this->gptr());
<span class="lineNum"> 325 </span> : else
<span class="lineNum"> 326 </span> : __ret = this->underflow();
<span class="lineNum"> 327 </span> : return __ret;
<span class="lineNum"> 328 </span> : }
<span class="lineNum"> 329 </span> :
<span class="lineNum"> 330 </span> : /**
<span class="lineNum"> 331 </span> : * @brief Entry point for xsgetn.
<span class="lineNum"> 332 </span> : * @param s A buffer area.
<span class="lineNum"> 333 </span> : * @param n A count.
<span class="lineNum"> 334 </span> : *
<span class="lineNum"> 335 </span> : * Returns xsgetn(s,n). The effect is to fill @a s[0] through
<span class="lineNum"> 336 </span> : * @a s[n-1] with characters from the input sequence, if possible.
<span class="lineNum"> 337 </span> : */
<span class="lineNum"> 338 </span> : streamsize
<span class="lineNum"> 339 </span> : sgetn(char_type* __s, streamsize __n)
<span class="lineNum"> 340 </span> : { return this->xsgetn(__s, __n); }
<span class="lineNum"> 341 </span> :
<span class="lineNum"> 342 </span> : // [27.5.2.2.4] putback
<span class="lineNum"> 343 </span> : /**
<span class="lineNum"> 344 </span> : * @brief Pushing characters back into the input stream.
<span class="lineNum"> 345 </span> : * @param c The character to push back.
<span class="lineNum"> 346 </span> : * @return The previous character, if possible.
<span class="lineNum"> 347 </span> : *
<span class="lineNum"> 348 </span> : * Similar to sungetc(), but @a c is pushed onto the stream instead
<span class="lineNum"> 349 </span> : * of "the previous character". If successful, the next character
<span class="lineNum"> 350 </span> : * fetched from the input stream will be @a c.
<span class="lineNum"> 351 </span> : */
<span class="lineNum"> 352 </span> : int_type
<span class="lineNum"> 353 </span> : sputbackc(char_type __c)
<span class="lineNum"> 354 </span> : {
<span class="lineNum"> 355 </span> : int_type __ret;
<span class="lineNum"> 356 </span> : const bool __testpos = this->eback() < this->gptr();
<span class="lineNum"> 357 </span> : if (__builtin_expect(!__testpos ||
<span class="lineNum"> 358 </span> : !traits_type::eq(__c, this->gptr()[-1]), false))
<span class="lineNum"> 359 </span> : __ret = this->pbackfail(traits_type::to_int_type(__c));
<span class="lineNum"> 360 </span> : else
<span class="lineNum"> 361 </span> : {
<span class="lineNum"> 362 </span> : this->gbump(-1);
<span class="lineNum"> 363 </span> : __ret = traits_type::to_int_type(*this->gptr());
<span class="lineNum"> 364 </span> : }
<span class="lineNum"> 365 </span> : return __ret;
<span class="lineNum"> 366 </span> : }
<span class="lineNum"> 367 </span> :
<span class="lineNum"> 368 </span> : /**
<span class="lineNum"> 369 </span> : * @brief Moving backwards in the input stream.
<span class="lineNum"> 370 </span> : * @return The previous character, if possible.
<span class="lineNum"> 371 </span> : *
<span class="lineNum"> 372 </span> : * If a putback position is available, this function decrements the
<span class="lineNum"> 373 </span> : * input pointer and returns that character. Otherwise, calls and
<span class="lineNum"> 374 </span> : * returns pbackfail(). The effect is to "unget" the last character
<span class="lineNum"> 375 </span> : * "gotten".
<span class="lineNum"> 376 </span> : */
<span class="lineNum"> 377 </span> : int_type
<span class="lineNum"> 378 </span> : sungetc()
<span class="lineNum"> 379 </span> : {
<span class="lineNum"> 380 </span> : int_type __ret;
<span class="lineNum"> 381 </span> : if (__builtin_expect(this->eback() < this->gptr(), true))
<span class="lineNum"> 382 </span> : {
<span class="lineNum"> 383 </span> : this->gbump(-1);
<span class="lineNum"> 384 </span> : __ret = traits_type::to_int_type(*this->gptr());
<span class="lineNum"> 385 </span> : }
<span class="lineNum"> 386 </span> : else
<span class="lineNum"> 387 </span> : __ret = this->pbackfail();
<span class="lineNum"> 388 </span> : return __ret;
<span class="lineNum"> 389 </span> : }
<span class="lineNum"> 390 </span> :
<span class="lineNum"> 391 </span> : // [27.5.2.2.5] put area
<span class="lineNum"> 392 </span> : /**
<span class="lineNum"> 393 </span> : * @brief Entry point for all single-character output functions.
<span class="lineNum"> 394 </span> : * @param c A character to output.
<span class="lineNum"> 395 </span> : * @return @a c, if possible.
<span class="lineNum"> 396 </span> : *
<span class="lineNum"> 397 </span> : * One of two public output functions.
<span class="lineNum"> 398 </span> : *
<span class="lineNum"> 399 </span> : * If a write position is available for the output sequence (i.e.,
<span class="lineNum"> 400 </span> : * the buffer is not full), stores @a c in that position, increments
<span class="lineNum"> 401 </span> : * the position, and returns @c traits::to_int_type(c). If a write
<span class="lineNum"> 402 </span> : * position is not available, returns @c overflow(c).
<span class="lineNum"> 403 </span> : */
<span class="lineNum"> 404 </span> : int_type
<span class="lineNum"> 405 </span> : sputc(char_type __c)
<span class="lineNum"> 406 </span> : {
<span class="lineNum"> 407 </span> : int_type __ret;
<span class="lineNum"> 408 </span> : if (__builtin_expect(this->pptr() < this->epptr(), true))
<span class="lineNum"> 409 </span> : {
<span class="lineNum"> 410 </span> : *this->pptr() = __c;
<span class="lineNum"> 411 </span> : this->pbump(1);
<span class="lineNum"> 412 </span> : __ret = traits_type::to_int_type(__c);
<span class="lineNum"> 413 </span> : }
<span class="lineNum"> 414 </span> : else
<span class="lineNum"> 415 </span> : __ret = this->overflow(traits_type::to_int_type(__c));
<span class="lineNum"> 416 </span> : return __ret;
<span class="lineNum"> 417 </span> : }
<span class="lineNum"> 418 </span> :
<span class="lineNum"> 419 </span> : /**
<span class="lineNum"> 420 </span> : * @brief Entry point for all single-character output functions.
<span class="lineNum"> 421 </span> : * @param s A buffer read area.
<span class="lineNum"> 422 </span> : * @param n A count.
<span class="lineNum"> 423 </span> : *
<span class="lineNum"> 424 </span> : * One of two public output functions.
<span class="lineNum"> 425 </span> : *
<span class="lineNum"> 426 </span> : *
<span class="lineNum"> 427 </span> : * Returns xsputn(s,n). The effect is to write @a s[0] through
<span class="lineNum"> 428 </span> : * @a s[n-1] to the output sequence, if possible.
<span class="lineNum"> 429 </span> : */
<span class="lineNum"> 430 </span> : streamsize
<span class="lineNum"> 431 </span> : sputn(const char_type* __s, streamsize __n)
<span class="lineNum"> 432 </span> : { return this->xsputn(__s, __n); }
<span class="lineNum"> 433 </span> :
<span class="lineNum"> 434 </span> : protected:
<span class="lineNum"> 435 </span> : /**
<span class="lineNum"> 436 </span> : * @brief Base constructor.
<span class="lineNum"> 437 </span> : *
<span class="lineNum"> 438 </span> : * Only called from derived constructors, and sets up all the
<span class="lineNum"> 439 </span> : * buffer data to zero, including the pointers described in the
<span class="lineNum"> 440 </span> : * basic_streambuf class description. Note that, as a result,
<span class="lineNum"> 441 </span> : * - the class starts with no read nor write positions available,
<span class="lineNum"> 442 </span> : * - this is not an error
<span class="lineNum"> 443 </span> : */
<span class="lineNum"> 444 </span><span class="lineNoCov"> 0 : basic_streambuf()</span>
<span class="lineNum"> 445 </span> : : _M_in_beg(0), _M_in_cur(0), _M_in_end(0),
<span class="lineNum"> 446 </span> : _M_out_beg(0), _M_out_cur(0), _M_out_end(0),
<span class="lineNum"> 447 </span><span class="lineNoCov"> 0 : _M_buf_locale(locale()) </span>
<span class="lineNum"> 448 </span><span class="lineNoCov"> 0 : { }</span>
<span class="lineNum"> 449 </span> :
<span class="lineNum"> 450 </span> : // [27.5.2.3.1] get area access
<span class="lineNum"> 451 </span> : //@{
<span class="lineNum"> 452 </span> : /**
<span class="lineNum"> 453 </span> : * @brief Access to the get area.
<span class="lineNum"> 454 </span> : *
<span class="lineNum"> 455 </span> : * These functions are only available to other protected functions,
<span class="lineNum"> 456 </span> : * including derived classes.
<span class="lineNum"> 457 </span> : *
<span class="lineNum"> 458 </span> : * - eback() returns the beginning pointer for the input sequence
<span class="lineNum"> 459 </span> : * - gptr() returns the next pointer for the input sequence
<span class="lineNum"> 460 </span> : * - egptr() returns the end pointer for the input sequence
<span class="lineNum"> 461 </span> : */
<span class="lineNum"> 462 </span> : char_type*
<span class="lineNum"> 463 </span> : eback() const { return _M_in_beg; }
<span class="lineNum"> 464 </span> :
<span class="lineNum"> 465 </span> : char_type*
<span class="lineNum"> 466 </span><span class="lineNoCov"> 0 : gptr() const { return _M_in_cur; }</span>
<span class="lineNum"> 467 </span> :
<span class="lineNum"> 468 </span> : char_type*
<span class="lineNum"> 469 </span><span class="lineNoCov"> 0 : egptr() const { return _M_in_end; }</span>
<span class="lineNum"> 470 </span> : //@}
<span class="lineNum"> 471 </span> :
<span class="lineNum"> 472 </span> : /**
<span class="lineNum"> 473 </span> : * @brief Moving the read position.
<span class="lineNum"> 474 </span> : * @param n The delta by which to move.
<span class="lineNum"> 475 </span> : *
<span class="lineNum"> 476 </span> : * This just advances the read position without returning any data.
<span class="lineNum"> 477 </span> : */
<span class="lineNum"> 478 </span> : void
<span class="lineNum"> 479 </span><span class="lineNoCov"> 0 : gbump(int __n) { _M_in_cur += __n; }</span>
<span class="lineNum"> 480 </span> :
<span class="lineNum"> 481 </span> : /**
<span class="lineNum"> 482 </span> : * @brief Setting the three read area pointers.
<span class="lineNum"> 483 </span> : * @param gbeg A pointer.
<span class="lineNum"> 484 </span> : * @param gnext A pointer.
<span class="lineNum"> 485 </span> : * @param gend A pointer.
<span class="lineNum"> 486 </span> : * @post @a gbeg == @c eback(), @a gnext == @c gptr(), and
<span class="lineNum"> 487 </span> : * @a gend == @c egptr()
<span class="lineNum"> 488 </span> : */
<span class="lineNum"> 489 </span> : void
<span class="lineNum"> 490 </span> : setg(char_type* __gbeg, char_type* __gnext, char_type* __gend)
<span class="lineNum"> 491 </span> : {
<span class="lineNum"> 492 </span> : _M_in_beg = __gbeg;
<span class="lineNum"> 493 </span> : _M_in_cur = __gnext;
<span class="lineNum"> 494 </span> : _M_in_end = __gend;
<span class="lineNum"> 495 </span> : }
<span class="lineNum"> 496 </span> :
<span class="lineNum"> 497 </span> : // [27.5.2.3.2] put area access
<span class="lineNum"> 498 </span> : //@{
<span class="lineNum"> 499 </span> : /**
<span class="lineNum"> 500 </span> : * @brief Access to the put area.
<span class="lineNum"> 501 </span> : *
<span class="lineNum"> 502 </span> : * These functions are only available to other protected functions,
<span class="lineNum"> 503 </span> : * including derived classes.
<span class="lineNum"> 504 </span> : *
<span class="lineNum"> 505 </span> : * - pbase() returns the beginning pointer for the output sequence
<span class="lineNum"> 506 </span> : * - pptr() returns the next pointer for the output sequence
<span class="lineNum"> 507 </span> : * - epptr() returns the end pointer for the output sequence
<span class="lineNum"> 508 </span> : */
<span class="lineNum"> 509 </span> : char_type*
<span class="lineNum"> 510 </span><span class="lineNoCov"> 0 : pbase() const { return _M_out_beg; }</span>
<span class="lineNum"> 511 </span> :
<span class="lineNum"> 512 </span> : char_type*
<span class="lineNum"> 513 </span><span class="lineNoCov"> 0 : pptr() const { return _M_out_cur; }</span>
<span class="lineNum"> 514 </span> :
<span class="lineNum"> 515 </span> : char_type*
<span class="lineNum"> 516 </span> : epptr() const { return _M_out_end; }
<span class="lineNum"> 517 </span> : //@}
<span class="lineNum"> 518 </span> :
<span class="lineNum"> 519 </span> : /**
<span class="lineNum"> 520 </span> : * @brief Moving the write position.
<span class="lineNum"> 521 </span> : * @param n The delta by which to move.
<span class="lineNum"> 522 </span> : *
<span class="lineNum"> 523 </span> : * This just advances the write position without returning any data.
<span class="lineNum"> 524 </span> : */
<span class="lineNum"> 525 </span> : void
<span class="lineNum"> 526 </span><span class="lineNoCov"> 0 : pbump(int __n) { _M_out_cur += __n; }</span>
<span class="lineNum"> 527 </span> :
<span class="lineNum"> 528 </span> : /**
<span class="lineNum"> 529 </span> : * @brief Setting the three write area pointers.
<span class="lineNum"> 530 </span> : * @param pbeg A pointer.
<span class="lineNum"> 531 </span> : * @param pend A pointer.
<span class="lineNum"> 532 </span> : * @post @a pbeg == @c pbase(), @a pbeg == @c pptr(), and
<span class="lineNum"> 533 </span> : * @a pend == @c epptr()
<span class="lineNum"> 534 </span> : */
<span class="lineNum"> 535 </span> : void
<span class="lineNum"> 536 </span><span class="lineNoCov"> 0 : setp(char_type* __pbeg, char_type* __pend)</span>
<span class="lineNum"> 537 </span> : {
<span class="lineNum"> 538 </span><span class="lineNoCov"> 0 : _M_out_beg = _M_out_cur = __pbeg; </span>
<span class="lineNum"> 539 </span><span class="lineNoCov"> 0 : _M_out_end = __pend;</span>
<span class="lineNum"> 540 </span><span class="lineNoCov"> 0 : }</span>
<span class="lineNum"> 541 </span> :
<span class="lineNum"> 542 </span> : // [27.5.2.4] virtual functions
<span class="lineNum"> 543 </span> : // [27.5.2.4.1] locales
<span class="lineNum"> 544 </span> : /**
<span class="lineNum"> 545 </span> : * @brief Changes translations.
<span class="lineNum"> 546 </span> : * @param loc A new locale.
<span class="lineNum"> 547 </span> : *
<span class="lineNum"> 548 </span> : * Translations done during I/O which depend on the current locale
<span class="lineNum"> 549 </span> : * are changed by this call. The standard adds, "Between invocations
<span class="lineNum"> 550 </span> : * of this function a class derived from streambuf can safely cache
<span class="lineNum"> 551 </span> : * results of calls to locale functions and to members of facets
<span class="lineNum"> 552 </span> : * so obtained."
<span class="lineNum"> 553 </span> : *
<span class="lineNum"> 554 </span> : * @note Base class version does nothing.
<span class="lineNum"> 555 </span> : */
<span class="lineNum"> 556 </span> : virtual void
<span class="lineNum"> 557 </span><span class="lineNoCov"> 0 : imbue(const locale&) </span>
<span class="lineNum"> 558 </span><span class="lineNoCov"> 0 : { }</span>
<span class="lineNum"> 559 </span> :
<span class="lineNum"> 560 </span> : // [27.5.2.4.2] buffer management and positioning
<span class="lineNum"> 561 </span> : /**
<span class="lineNum"> 562 </span> : * @brief Manipulates the buffer.
<span class="lineNum"> 563 </span> : *
<span class="lineNum"> 564 </span> : * Each derived class provides its own appropriate behavior. See
<span class="lineNum"> 565 </span> : * the next-to-last paragraph of
<span class="lineNum"> 566 </span> : * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#2 for
<span class="lineNum"> 567 </span> : * more on this function.
<span class="lineNum"> 568 </span> : *
<span class="lineNum"> 569 </span> : * @note Base class version does nothing, returns @c this.
<span class="lineNum"> 570 </span> : */
<span class="lineNum"> 571 </span> : virtual basic_streambuf<char_type,_Traits>*
<span class="lineNum"> 572 </span><span class="lineNoCov"> 0 : setbuf(char_type*, streamsize)</span>
<span class="lineNum"> 573 </span><span class="lineNoCov"> 0 : { return this; }</span>
<span class="lineNum"> 574 </span> :
<span class="lineNum"> 575 </span> : /**
<span class="lineNum"> 576 </span> : * @brief Alters the stream positions.
<span class="lineNum"> 577 </span> : *
<span class="lineNum"> 578 </span> : * Each derived class provides its own appropriate behavior.
<span class="lineNum"> 579 </span> : * @note Base class version does nothing, returns a @c pos_type
<span class="lineNum"> 580 </span> : * that represents an invalid stream position.
<span class="lineNum"> 581 </span> : */
<span class="lineNum"> 582 </span> : virtual pos_type
<span class="lineNum"> 583 </span> : seekoff(off_type, ios_base::seekdir,
<span class="lineNum"> 584 </span><span class="lineNoCov"> 0 : ios_base::openmode /*__mode*/ = ios_base::in | ios_base::out)</span>
<span class="lineNum"> 585 </span><span class="lineNoCov"> 0 : { return pos_type(off_type(-1)); } </span>
<span class="lineNum"> 586 </span> :
<span class="lineNum"> 587 </span> : /**
<span class="lineNum"> 588 </span> : * @brief Alters the stream positions.
<span class="lineNum"> 589 </span> : *
<span class="lineNum"> 590 </span> : * Each derived class provides its own appropriate behavior.
<span class="lineNum"> 591 </span> : * @note Base class version does nothing, returns a @c pos_type
<span class="lineNum"> 592 </span> : * that represents an invalid stream position.
<span class="lineNum"> 593 </span> : */
<span class="lineNum"> 594 </span> : virtual pos_type
<span class="lineNum"> 595 </span> : seekpos(pos_type,
<span class="lineNum"> 596 </span><span class="lineNoCov"> 0 : ios_base::openmode /*__mode*/ = ios_base::in | ios_base::out)</span>
<span class="lineNum"> 597 </span><span class="lineNoCov"> 0 : { return pos_type(off_type(-1)); } </span>
<span class="lineNum"> 598 </span> :
<span class="lineNum"> 599 </span> : /**
<span class="lineNum"> 600 </span> : * @brief Synchronizes the buffer arrays with the controlled sequences.
<span class="lineNum"> 601 </span> : * @return -1 on failure.
<span class="lineNum"> 602 </span> : *
<span class="lineNum"> 603 </span> : * Each derived class provides its own appropriate behavior,
<span class="lineNum"> 604 </span> : * including the definition of "failure".
<span class="lineNum"> 605 </span> : * @note Base class version does nothing, returns zero.
<span class="lineNum"> 606 </span> : */
<span class="lineNum"> 607 </span> : virtual int
<span class="lineNum"> 608 </span><span class="lineNoCov"> 0 : sync() { return 0; }</span>
<span class="lineNum"> 609 </span> :
<span class="lineNum"> 610 </span> : // [27.5.2.4.3] get area
<span class="lineNum"> 611 </span> : /**
<span class="lineNum"> 612 </span> : * @brief Investigating the data available.
<span class="lineNum"> 613 </span> : * @return An estimate of the number of characters available in the
<span class="lineNum"> 614 </span> : * input sequence, or -1.
<span class="lineNum"> 615 </span> : *
<span class="lineNum"> 616 </span> : * "If it returns a positive value, then successive calls to
<span class="lineNum"> 617 </span> : * @c underflow() will not return @c traits::eof() until at least that
<span class="lineNum"> 618 </span> : * number of characters have been supplied. If @c showmanyc()
<span class="lineNum"> 619 </span> : * returns -1, then calls to @c underflow() or @c uflow() will fail."
<span class="lineNum"> 620 </span> : * [27.5.2.4.3]/1
<span class="lineNum"> 621 </span> : *
<span class="lineNum"> 622 </span> : * @note Base class version does nothing, returns zero.
<span class="lineNum"> 623 </span> : * @note The standard adds that "the intention is not only that the
<span class="lineNum"> 624 </span> : * calls [to underflow or uflow] will not return @c eof() but
<span class="lineNum"> 625 </span> : * that they will return "immediately".
<span class="lineNum"> 626 </span> : * @note The standard adds that "the morphemes of @c showmanyc are
<span class="lineNum"> 627 </span> : * "es-how-many-see", not "show-manic".
<span class="lineNum"> 628 </span> : */
<span class="lineNum"> 629 </span> : virtual streamsize
<span class="lineNum"> 630 </span><span class="lineNoCov"> 0 : showmanyc() { return 0; }</span>
<span class="lineNum"> 631 </span> :
<span class="lineNum"> 632 </span> : /**
<span class="lineNum"> 633 </span> : * @brief Multiple character extraction.
<span class="lineNum"> 634 </span> : * @param s A buffer area.
<span class="lineNum"> 635 </span> : * @param n Maximum number of characters to assign.
<span class="lineNum"> 636 </span> : * @return The number of characters assigned.
<span class="lineNum"> 637 </span> : *
<span class="lineNum"> 638 </span> : * Fills @a s[0] through @a s[n-1] with characters from the input
<span class="lineNum"> 639 </span> : * sequence, as if by @c sbumpc(). Stops when either @a n characters
<span class="lineNum"> 640 </span> : * have been copied, or when @c traits::eof() would be copied.
<span class="lineNum"> 641 </span> : *
<span class="lineNum"> 642 </span> : * It is expected that derived classes provide a more efficient
<span class="lineNum"> 643 </span> : * implementation by overriding this definition.
<span class="lineNum"> 644 </span> : */
<span class="lineNum"> 645 </span> : virtual streamsize
<span class="lineNum"> 646 </span> : xsgetn(char_type* __s, streamsize __n);
<span class="lineNum"> 647 </span> :
<span class="lineNum"> 648 </span> : /**
<span class="lineNum"> 649 </span> : * @brief Fetches more data from the controlled sequence.
<span class="lineNum"> 650 </span> : * @return The first character from the <em>pending sequence</em>.
<span class="lineNum"> 651 </span> : *
<span class="lineNum"> 652 </span> : * Informally, this function is called when the input buffer is
<span class="lineNum"> 653 </span> : * exhausted (or does not exist, as buffering need not actually be
<span class="lineNum"> 654 </span> : * done). If a buffer exists, it is "refilled". In either case, the
<span class="lineNum"> 655 </span> : * next available character is returned, or @c traits::eof() to
<span class="lineNum"> 656 </span> : * indicate a null pending sequence.
<span class="lineNum"> 657 </span> : *
<span class="lineNum"> 658 </span> : * For a formal definition of the pending sequence, see a good text
<span class="lineNum"> 659 </span> : * such as Langer & Kreft, or [27.5.2.4.3]/7-14.
<span class="lineNum"> 660 </span> : *
<span class="lineNum"> 661 </span> : * A functioning input streambuf can be created by overriding only
<span class="lineNum"> 662 </span> : * this function (no buffer area will be used). For an example, see
<span class="lineNum"> 663 </span> : * http://gcc.gnu.org/onlinedocs/libstdc++/27_io/howto.html#6
<span class="lineNum"> 664 </span> : *
<span class="lineNum"> 665 </span> : * @note Base class version does nothing, returns eof().
<span class="lineNum"> 666 </span> : */
<span class="lineNum"> 667 </span> : virtual int_type
<span class="lineNum"> 668 </span><span class="lineNoCov"> 0 : underflow()</span>
<span class="lineNum"> 669 </span><span class="lineNoCov"> 0 : { return traits_type::eof(); }</span>
<span class="lineNum"> 670 </span> :
<span class="lineNum"> 671 </span> : /**
<span class="lineNum"> 672 </span> : * @brief Fetches more data from the controlled sequence.
<span class="lineNum"> 673 </span> : * @return The first character from the <em>pending sequence</em>.
<span class="lineNum"> 674 </span> : *
<span class="lineNum"> 675 </span> : * Informally, this function does the same thing as @c underflow(),
<span class="lineNum"> 676 </span> : * and in fact is required to call that function. It also returns
<span class="lineNum"> 677 </span> : * the new character, like @c underflow() does. However, this
<span class="lineNum"> 678 </span> : * function also moves the read position forward by one.
<span class="lineNum"> 679 </span> : */
<span class="lineNum"> 680 </span> : virtual int_type
<span class="lineNum"> 681 </span><span class="lineNoCov"> 0 : uflow() </span>
<span class="lineNum"> 682 </span> : {
<span class="lineNum"> 683 </span><span class="lineNoCov"> 0 : int_type __ret = traits_type::eof();</span>
<span class="lineNum"> 684 </span> : const bool __testeof = traits_type::eq_int_type(this->underflow(),
<span class="lineNum"> 685 </span><span class="lineNoCov"> 0 : __ret);</span>
<span class="lineNum"> 686 </span><span class="lineNoCov"> 0 : if (!__testeof)</span>
<span class="lineNum"> 687 </span> : {
<span class="lineNum"> 688 </span><span class="lineNoCov"> 0 : __ret = traits_type::to_int_type(*this->gptr());</span>
<span class="lineNum"> 689 </span><span class="lineNoCov"> 0 : this->gbump(1);</span>
<span class="lineNum"> 690 </span> : }
<span class="lineNum"> 691 </span><span class="lineNoCov"> 0 : return __ret; </span>
<span class="lineNum"> 692 </span> : }
<span class="lineNum"> 693 </span> :
<span class="lineNum"> 694 </span> : // [27.5.2.4.4] putback
<span class="lineNum"> 695 </span> : /**
<span class="lineNum"> 696 </span> : * @brief Tries to back up the input sequence.
<span class="lineNum"> 697 </span> : * @param c The character to be inserted back into the sequence.
<span class="lineNum"> 698 </span> : * @return eof() on failure, "some other value" on success
<span class="lineNum"> 699 </span> : * @post The constraints of @c gptr(), @c eback(), and @c pptr()
<span class="lineNum"> 700 </span> : * are the same as for @c underflow().
<span class="lineNum"> 701 </span> : *
<span class="lineNum"> 702 </span> : * @note Base class version does nothing, returns eof().
<span class="lineNum"> 703 </span> : */
<span class="lineNum"> 704 </span> : virtual int_type
<span class="lineNum"> 705 </span><span class="lineNoCov"> 0 : pbackfail(int_type /* __c */ = traits_type::eof())</span>
<span class="lineNum"> 706 </span><span class="lineNoCov"> 0 : { return traits_type::eof(); }</span>
<span class="lineNum"> 707 </span> :
<span class="lineNum"> 708 </span> : // Put area:
<span class="lineNum"> 709 </span> : /**
<span class="lineNum"> 710 </span> : * @brief Multiple character insertion.
<span class="lineNum"> 711 </span> : * @param s A buffer area.
<span class="lineNum"> 712 </span> : * @param n Maximum number of characters to write.
<span class="lineNum"> 713 </span> : * @return The number of characters written.
<span class="lineNum"> 714 </span> : *
<span class="lineNum"> 715 </span> : * Writes @a s[0] through @a s[n-1] to the output sequence, as if
<span class="lineNum"> 716 </span> : * by @c sputc(). Stops when either @a n characters have been
<span class="lineNum"> 717 </span> : * copied, or when @c sputc() would return @c traits::eof().
<span class="lineNum"> 718 </span> : *
<span class="lineNum"> 719 </span> : * It is expected that derived classes provide a more efficient
<span class="lineNum"> 720 </span> : * implementation by overriding this definition.
<span class="lineNum"> 721 </span> : */
<span class="lineNum"> 722 </span> : virtual streamsize
<span class="lineNum"> 723 </span> : xsputn(const char_type* __s, streamsize __n);
<span class="lineNum"> 724 </span> :
<span class="lineNum"> 725 </span> : /**
<span class="lineNum"> 726 </span> : * @brief Consumes data from the buffer; writes to the
<span class="lineNum"> 727 </span> : * controlled sequence.
<span class="lineNum"> 728 </span> : * @param c An additional character to consume.
<span class="lineNum"> 729 </span> : * @return eof() to indicate failure, something else (usually
<span class="lineNum"> 730 </span> : * @a c, or not_eof())
<span class="lineNum"> 731 </span> : *
<span class="lineNum"> 732 </span> : * Informally, this function is called when the output buffer is full
<span class="lineNum"> 733 </span> : * (or does not exist, as buffering need not actually be done). If a
<span class="lineNum"> 734 </span> : * buffer exists, it is "consumed", with "some effect" on the
<span class="lineNum"> 735 </span> : * controlled sequence. (Typically, the buffer is written out to the
<span class="lineNum"> 736 </span> : * sequence verbatim.) In either case, the character @a c is also
<span class="lineNum"> 737 </span> : * written out, if @a c is not @c eof().
<span class="lineNum"> 738 </span> : *
<span class="lineNum"> 739 </span> : * For a formal definition of this function, see a good text
<span class="lineNum"> 740 </span> : * such as Langer & Kreft, or [27.5.2.4.5]/3-7.
<span class="lineNum"> 741 </span> : *
<span class="lineNum"> 742 </span> : * A functioning output streambuf can be created by overriding only
<span class="lineNum"> 743 </span> : * this function (no buffer area will be used).
<span class="lineNum"> 744 </span> : *
<span class="lineNum"> 745 </span> : * @note Base class version does nothing, returns eof().
<span class="lineNum"> 746 </span> : */
<span class="lineNum"> 747 </span> : virtual int_type
<span class="lineNum"> 748 </span> : overflow(int_type /* __c */ = traits_type::eof())
<span class="lineNum"> 749 </span> : { return traits_type::eof(); }
<span class="lineNum"> 750 </span> :
<span class="lineNum"> 751 </span> : #if _GLIBCXX_DEPRECATED
<span class="lineNum"> 752 </span> : // Annex D.6
<span class="lineNum"> 753 </span> : public:
<span class="lineNum"> 754 </span> : /**
<span class="lineNum"> 755 </span> : * @brief Tosses a character.
<span class="lineNum"> 756 </span> : *
<span class="lineNum"> 757 </span> : * Advances the read pointer, ignoring the character that would have
<span class="lineNum"> 758 </span> : * been read.
<span class="lineNum"> 759 </span> : *
<span class="lineNum"> 760 </span> : * See http://gcc.gnu.org/ml/libstdc++/2002-05/msg00168.html
<span class="lineNum"> 761 </span> : */
<span class="lineNum"> 762 </span> : void
<span class="lineNum"> 763 </span> : stossc()
<span class="lineNum"> 764 </span> : {
<span class="lineNum"> 765 </span> : if (this->gptr() < this->egptr())
<span class="lineNum"> 766 </span> : this->gbump(1);
<span class="lineNum"> 767 </span> : else
<span class="lineNum"> 768 </span> : this->uflow();
<span class="lineNum"> 769 </span> : }
<span class="lineNum"> 770 </span> : #endif
<span class="lineNum"> 771 </span> :
<span class="lineNum"> 772 </span> : private:
<span class="lineNum"> 773 </span> : // _GLIBCXX_RESOLVE_LIB_DEFECTS
<span class="lineNum"> 774 </span> : // Side effect of DR 50.
<span class="lineNum"> 775 </span> : basic_streambuf(const __streambuf_type& __sb)
<span class="lineNum"> 776 </span> : : _M_in_beg(__sb._M_in_beg), _M_in_cur(__sb._M_in_cur),
<span class="lineNum"> 777 </span> : _M_in_end(__sb._M_in_end), _M_out_beg(__sb._M_out_beg),
<span class="lineNum"> 778 </span> : _M_out_cur(__sb._M_out_cur), _M_out_end(__sb._M_out_cur),
<span class="lineNum"> 779 </span> : _M_buf_locale(__sb._M_buf_locale)
<span class="lineNum"> 780 </span> : { }
<span class="lineNum"> 781 </span> :
<span class="lineNum"> 782 </span> : __streambuf_type&
<span class="lineNum"> 783 </span> : operator=(const __streambuf_type&) { return *this; };
<span class="lineNum"> 784 </span> : };
<span class="lineNum"> 785 </span> :
<span class="lineNum"> 786 </span> : // Explicit specialization declarations, defined in src/streambuf.cc.
<span class="lineNum"> 787 </span> : template<>
<span class="lineNum"> 788 </span> : streamsize
<span class="lineNum"> 789 </span> : __copy_streambufs_eof(basic_streambuf<char>* __sbin,
<span class="lineNum"> 790 </span> : basic_streambuf<char>* __sbout, bool& __ineof);
<span class="lineNum"> 791 </span> : #ifdef _GLIBCXX_USE_WCHAR_T
<span class="lineNum"> 792 </span> : template<>
<span class="lineNum"> 793 </span> : streamsize
<span class="lineNum"> 794 </span> : __copy_streambufs_eof(basic_streambuf<wchar_t>* __sbin,
<span class="lineNum"> 795 </span> : basic_streambuf<wchar_t>* __sbout, bool& __ineof);
<span class="lineNum"> 796 </span> : #endif
<span class="lineNum"> 797 </span> :
<span class="lineNum"> 798 </span> : _GLIBCXX_END_NAMESPACE
<span class="lineNum"> 799 </span> :
<span class="lineNum"> 800 </span> : #ifndef _GLIBCXX_EXPORT_TEMPLATE
<span class="lineNum"> 801 </span> : # include <bits/streambuf.tcc>
<span class="lineNum"> 802 </span> : #endif
<span class="lineNum"> 803 </span> :
<span class="lineNum"> 804 </span> : #endif /* _GLIBCXX_STREAMBUF */
</pre>
</td>
</tr>
</table>
<br>
<table width="100%" border=0 cellspacing=0 cellpadding=0>
<tr><td class="ruler"><img src="../../../../glass.png" width=3 height=3 alt=""></td></tr>
<tr><td class="versionInfo">Generated by: <a href="http://ltp.sourceforge.net/coverage/lcov.php" target="_parent">LTP GCOV extension version 1.6</a></td></tr>
</table>
<br>
</body>
</html>
|
