1 // Versatile string -*- C++ -*-
2
3 // Copyright (C) 2005, 2006, 2007 Free Software Foundation, Inc.
4 //
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 2, or (at your option)
9 // any later version.
10
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
15
16 // You should have received a copy of the GNU General Public License along
17 // with this library; see the file COPYING. If not, write to the Free
18 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
19 // USA.
20
21 // As a special exception, you may use this file as part of a free software
22 // library without restriction. Specifically, if other files instantiate
23 // templates or use macros or inline functions from this file, or you compile
24 // this file and link it with other files to produce an executable, this
25 // file does not by itself cause the resulting executable to be covered by
26 // the GNU General Public License. This exception does not however
27 // invalidate any other reasons why the executable file might be covered by
28 // the GNU General Public License.
29
30 /** @file ext/vstring.tcc
31 * This file is a GNU extension to the Standard C++ Library.
32 * This is an internal header file, included by other library headers.
33 * You should not attempt to use it directly.
34 */
35
36 #ifndef _VSTRING_TCC
37 #define _VSTRING_TCC 1
38
39 #pragma GCC system_header
40
41 _GLIBCXX_BEGIN_NAMESPACE(__gnu_cxx)
42
43 template<typename _CharT, typename _Traits, typename _Alloc,
44 template <typename, typename, typename> class _Base>
45 const typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
46 __versa_string<_CharT, _Traits, _Alloc, _Base>::npos;
47
48 template<typename _CharT, typename _Traits, typename _Alloc,
49 template <typename, typename, typename> class _Base>
50 void
51 __versa_string<_CharT, _Traits, _Alloc, _Base>::
resize(size_type __n,_CharT __c)52 resize(size_type __n, _CharT __c)
53 {
54 const size_type __size = this->size();
55 if (__size < __n)
56 this->append(__n - __size, __c);
57 else if (__n < __size)
58 this->_M_erase(__n, __size - __n);
59 }
60
61 template<typename _CharT, typename _Traits, typename _Alloc,
62 template <typename, typename, typename> class _Base>
63 __versa_string<_CharT, _Traits, _Alloc, _Base>&
64 __versa_string<_CharT, _Traits, _Alloc, _Base>::
_M_append(const _CharT * __s,size_type __n)65 _M_append(const _CharT* __s, size_type __n)
66 {
67 const size_type __len = __n + this->size();
68
69 if (__len <= this->capacity() && !this->_M_is_shared())
70 {
71 if (__n)
72 this->_S_copy(this->_M_data() + this->size(), __s, __n);
73 }
74 else
75 this->_M_mutate(this->size(), size_type(0), __s, __n);
76
77 this->_M_set_length(__len);
78 return *this;
79 }
80
81 template<typename _CharT, typename _Traits, typename _Alloc,
82 template <typename, typename, typename> class _Base>
83 template<typename _InputIterator>
84 __versa_string<_CharT, _Traits, _Alloc, _Base>&
85 __versa_string<_CharT, _Traits, _Alloc, _Base>::
_M_replace_dispatch(iterator __i1,iterator __i2,_InputIterator __k1,_InputIterator __k2,std::__false_type)86 _M_replace_dispatch(iterator __i1, iterator __i2, _InputIterator __k1,
87 _InputIterator __k2, std::__false_type)
88 {
89 const __versa_string __s(__k1, __k2);
90 const size_type __n1 = __i2 - __i1;
91 return _M_replace(__i1 - _M_ibegin(), __n1, __s._M_data(),
92 __s.size());
93 }
94
95 template<typename _CharT, typename _Traits, typename _Alloc,
96 template <typename, typename, typename> class _Base>
97 __versa_string<_CharT, _Traits, _Alloc, _Base>&
98 __versa_string<_CharT, _Traits, _Alloc, _Base>::
_M_replace_aux(size_type __pos1,size_type __n1,size_type __n2,_CharT __c)99 _M_replace_aux(size_type __pos1, size_type __n1, size_type __n2,
100 _CharT __c)
101 {
102 _M_check_length(__n1, __n2, "__versa_string::_M_replace_aux");
103
104 const size_type __old_size = this->size();
105 const size_type __new_size = __old_size + __n2 - __n1;
106
107 if (__new_size <= this->capacity() && !this->_M_is_shared())
108 {
109 _CharT* __p = this->_M_data() + __pos1;
110
111 const size_type __how_much = __old_size - __pos1 - __n1;
112 if (__how_much && __n1 != __n2)
113 this->_S_move(__p + __n2, __p + __n1, __how_much);
114 }
115 else
116 this->_M_mutate(__pos1, __n1, 0, __n2);
117
118 if (__n2)
119 this->_S_assign(this->_M_data() + __pos1, __n2, __c);
120
121 this->_M_set_length(__new_size);
122 return *this;
123 }
124
125 template<typename _CharT, typename _Traits, typename _Alloc,
126 template <typename, typename, typename> class _Base>
127 __versa_string<_CharT, _Traits, _Alloc, _Base>&
128 __versa_string<_CharT, _Traits, _Alloc, _Base>::
_M_replace(size_type __pos,size_type __len1,const _CharT * __s,const size_type __len2)129 _M_replace(size_type __pos, size_type __len1, const _CharT* __s,
130 const size_type __len2)
131 {
132 _M_check_length(__len1, __len2, "__versa_string::_M_replace");
133
134 const size_type __old_size = this->size();
135 const size_type __new_size = __old_size + __len2 - __len1;
136
137 if (__new_size <= this->capacity() && !this->_M_is_shared())
138 {
139 _CharT* __p = this->_M_data() + __pos;
140
141 const size_type __how_much = __old_size - __pos - __len1;
142 if (_M_disjunct(__s))
143 {
144 if (__how_much && __len1 != __len2)
145 this->_S_move(__p + __len2, __p + __len1, __how_much);
146 if (__len2)
147 this->_S_copy(__p, __s, __len2);
148 }
149 else
150 {
151 // Work in-place.
152 if (__len2 && __len2 <= __len1)
153 this->_S_move(__p, __s, __len2);
154 if (__how_much && __len1 != __len2)
155 this->_S_move(__p + __len2, __p + __len1, __how_much);
156 if (__len2 > __len1)
157 {
158 if (__s + __len2 <= __p + __len1)
159 this->_S_move(__p, __s, __len2);
160 else if (__s >= __p + __len1)
161 this->_S_copy(__p, __s + __len2 - __len1, __len2);
162 else
163 {
164 const size_type __nleft = (__p + __len1) - __s;
165 this->_S_move(__p, __s, __nleft);
166 this->_S_copy(__p + __nleft, __p + __len2,
167 __len2 - __nleft);
168 }
169 }
170 }
171 }
172 else
173 this->_M_mutate(__pos, __len1, __s, __len2);
174
175 this->_M_set_length(__new_size);
176 return *this;
177 }
178
179 template<typename _CharT, typename _Traits, typename _Alloc,
180 template <typename, typename, typename> class _Base>
181 __versa_string<_CharT, _Traits, _Alloc, _Base>
operator +(const __versa_string<_CharT,_Traits,_Alloc,_Base> & __lhs,const __versa_string<_CharT,_Traits,_Alloc,_Base> & __rhs)182 operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
183 const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
184 {
185 __versa_string<_CharT, _Traits, _Alloc, _Base> __str;
186 __str.reserve(__lhs.size() + __rhs.size());
187 __str.append(__lhs);
188 __str.append(__rhs);
189 return __str;
190 }
191
192 template<typename _CharT, typename _Traits, typename _Alloc,
193 template <typename, typename, typename> class _Base>
194 __versa_string<_CharT, _Traits, _Alloc, _Base>
operator +(const _CharT * __lhs,const __versa_string<_CharT,_Traits,_Alloc,_Base> & __rhs)195 operator+(const _CharT* __lhs,
196 const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
197 {
198 __glibcxx_requires_string(__lhs);
199 typedef __versa_string<_CharT, _Traits, _Alloc, _Base> __string_type;
200 typedef typename __string_type::size_type __size_type;
201 const __size_type __len = _Traits::length(__lhs);
202 __string_type __str;
203 __str.reserve(__len + __rhs.size());
204 __str.append(__lhs, __len);
205 __str.append(__rhs);
206 return __str;
207 }
208
209 template<typename _CharT, typename _Traits, typename _Alloc,
210 template <typename, typename, typename> class _Base>
211 __versa_string<_CharT, _Traits, _Alloc, _Base>
operator +(_CharT __lhs,const __versa_string<_CharT,_Traits,_Alloc,_Base> & __rhs)212 operator+(_CharT __lhs,
213 const __versa_string<_CharT, _Traits, _Alloc, _Base>& __rhs)
214 {
215 __versa_string<_CharT, _Traits, _Alloc, _Base> __str;
216 __str.reserve(__rhs.size() + 1);
217 __str.push_back(__lhs);
218 __str.append(__rhs);
219 return __str;
220 }
221
222 template<typename _CharT, typename _Traits, typename _Alloc,
223 template <typename, typename, typename> class _Base>
224 __versa_string<_CharT, _Traits, _Alloc, _Base>
operator +(const __versa_string<_CharT,_Traits,_Alloc,_Base> & __lhs,const _CharT * __rhs)225 operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
226 const _CharT* __rhs)
227 {
228 __glibcxx_requires_string(__rhs);
229 typedef __versa_string<_CharT, _Traits, _Alloc, _Base> __string_type;
230 typedef typename __string_type::size_type __size_type;
231 const __size_type __len = _Traits::length(__rhs);
232 __string_type __str;
233 __str.reserve(__lhs.size() + __len);
234 __str.append(__lhs);
235 __str.append(__rhs, __len);
236 return __str;
237 }
238
239 template<typename _CharT, typename _Traits, typename _Alloc,
240 template <typename, typename, typename> class _Base>
241 __versa_string<_CharT, _Traits, _Alloc, _Base>
operator +(const __versa_string<_CharT,_Traits,_Alloc,_Base> & __lhs,_CharT __rhs)242 operator+(const __versa_string<_CharT, _Traits, _Alloc, _Base>& __lhs,
243 _CharT __rhs)
244 {
245 __versa_string<_CharT, _Traits, _Alloc, _Base> __str;
246 __str.reserve(__lhs.size() + 1);
247 __str.append(__lhs);
248 __str.push_back(__rhs);
249 return __str;
250 }
251
252 template<typename _CharT, typename _Traits, typename _Alloc,
253 template <typename, typename, typename> class _Base>
254 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
255 __versa_string<_CharT, _Traits, _Alloc, _Base>::
copy(_CharT * __s,size_type __n,size_type __pos) const256 copy(_CharT* __s, size_type __n, size_type __pos) const
257 {
258 _M_check(__pos, "__versa_string::copy");
259 __n = _M_limit(__pos, __n);
260 __glibcxx_requires_string_len(__s, __n);
261 if (__n)
262 this->_S_copy(__s, this->_M_data() + __pos, __n);
263 // 21.3.5.7 par 3: do not append null. (good.)
264 return __n;
265 }
266
267 template<typename _CharT, typename _Traits, typename _Alloc,
268 template <typename, typename, typename> class _Base>
269 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
270 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find(const _CharT * __s,size_type __pos,size_type __n) const271 find(const _CharT* __s, size_type __pos, size_type __n) const
272 {
273 __glibcxx_requires_string_len(__s, __n);
274 const size_type __size = this->size();
275 const _CharT* __data = this->_M_data();
276
277 if (__n == 0)
278 return __pos <= __size ? __pos : npos;
279
280 if (__n <= __size)
281 {
282 for (; __pos <= __size - __n; ++__pos)
283 if (traits_type::eq(__data[__pos], __s[0])
284 && traits_type::compare(__data + __pos + 1,
285 __s + 1, __n - 1) == 0)
286 return __pos;
287 }
288 return npos;
289 }
290
291 template<typename _CharT, typename _Traits, typename _Alloc,
292 template <typename, typename, typename> class _Base>
293 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
294 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find(_CharT __c,size_type __pos) const295 find(_CharT __c, size_type __pos) const
296 {
297 size_type __ret = npos;
298 const size_type __size = this->size();
299 if (__pos < __size)
300 {
301 const _CharT* __data = this->_M_data();
302 const size_type __n = __size - __pos;
303 const _CharT* __p = traits_type::find(__data + __pos, __n, __c);
304 if (__p)
305 __ret = __p - __data;
306 }
307 return __ret;
308 }
309
310 template<typename _CharT, typename _Traits, typename _Alloc,
311 template <typename, typename, typename> class _Base>
312 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
313 __versa_string<_CharT, _Traits, _Alloc, _Base>::
rfind(const _CharT * __s,size_type __pos,size_type __n) const314 rfind(const _CharT* __s, size_type __pos, size_type __n) const
315 {
316 __glibcxx_requires_string_len(__s, __n);
317 const size_type __size = this->size();
318 if (__n <= __size)
319 {
320 __pos = std::min(size_type(__size - __n), __pos);
321 const _CharT* __data = this->_M_data();
322 do
323 {
324 if (traits_type::compare(__data + __pos, __s, __n) == 0)
325 return __pos;
326 }
327 while (__pos-- > 0);
328 }
329 return npos;
330 }
331
332 template<typename _CharT, typename _Traits, typename _Alloc,
333 template <typename, typename, typename> class _Base>
334 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
335 __versa_string<_CharT, _Traits, _Alloc, _Base>::
rfind(_CharT __c,size_type __pos) const336 rfind(_CharT __c, size_type __pos) const
337 {
338 size_type __size = this->size();
339 if (__size)
340 {
341 if (--__size > __pos)
342 __size = __pos;
343 for (++__size; __size-- > 0; )
344 if (traits_type::eq(this->_M_data()[__size], __c))
345 return __size;
346 }
347 return npos;
348 }
349
350 template<typename _CharT, typename _Traits, typename _Alloc,
351 template <typename, typename, typename> class _Base>
352 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
353 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find_first_of(const _CharT * __s,size_type __pos,size_type __n) const354 find_first_of(const _CharT* __s, size_type __pos, size_type __n) const
355 {
356 __glibcxx_requires_string_len(__s, __n);
357 for (; __n && __pos < this->size(); ++__pos)
358 {
359 const _CharT* __p = traits_type::find(__s, __n,
360 this->_M_data()[__pos]);
361 if (__p)
362 return __pos;
363 }
364 return npos;
365 }
366
367 template<typename _CharT, typename _Traits, typename _Alloc,
368 template <typename, typename, typename> class _Base>
369 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
370 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find_last_of(const _CharT * __s,size_type __pos,size_type __n) const371 find_last_of(const _CharT* __s, size_type __pos, size_type __n) const
372 {
373 __glibcxx_requires_string_len(__s, __n);
374 size_type __size = this->size();
375 if (__size && __n)
376 {
377 if (--__size > __pos)
378 __size = __pos;
379 do
380 {
381 if (traits_type::find(__s, __n, this->_M_data()[__size]))
382 return __size;
383 }
384 while (__size-- != 0);
385 }
386 return npos;
387 }
388
389 template<typename _CharT, typename _Traits, typename _Alloc,
390 template <typename, typename, typename> class _Base>
391 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
392 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find_first_not_of(const _CharT * __s,size_type __pos,size_type __n) const393 find_first_not_of(const _CharT* __s, size_type __pos, size_type __n) const
394 {
395 __glibcxx_requires_string_len(__s, __n);
396 for (; __pos < this->size(); ++__pos)
397 if (!traits_type::find(__s, __n, this->_M_data()[__pos]))
398 return __pos;
399 return npos;
400 }
401
402 template<typename _CharT, typename _Traits, typename _Alloc,
403 template <typename, typename, typename> class _Base>
404 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
405 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find_first_not_of(_CharT __c,size_type __pos) const406 find_first_not_of(_CharT __c, size_type __pos) const
407 {
408 for (; __pos < this->size(); ++__pos)
409 if (!traits_type::eq(this->_M_data()[__pos], __c))
410 return __pos;
411 return npos;
412 }
413
414 template<typename _CharT, typename _Traits, typename _Alloc,
415 template <typename, typename, typename> class _Base>
416 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
417 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find_last_not_of(const _CharT * __s,size_type __pos,size_type __n) const418 find_last_not_of(const _CharT* __s, size_type __pos, size_type __n) const
419 {
420 __glibcxx_requires_string_len(__s, __n);
421 size_type __size = this->size();
422 if (__size)
423 {
424 if (--__size > __pos)
425 __size = __pos;
426 do
427 {
428 if (!traits_type::find(__s, __n, this->_M_data()[__size]))
429 return __size;
430 }
431 while (__size--);
432 }
433 return npos;
434 }
435
436 template<typename _CharT, typename _Traits, typename _Alloc,
437 template <typename, typename, typename> class _Base>
438 typename __versa_string<_CharT, _Traits, _Alloc, _Base>::size_type
439 __versa_string<_CharT, _Traits, _Alloc, _Base>::
find_last_not_of(_CharT __c,size_type __pos) const440 find_last_not_of(_CharT __c, size_type __pos) const
441 {
442 size_type __size = this->size();
443 if (__size)
444 {
445 if (--__size > __pos)
446 __size = __pos;
447 do
448 {
449 if (!traits_type::eq(this->_M_data()[__size], __c))
450 return __size;
451 }
452 while (__size--);
453 }
454 return npos;
455 }
456
457 template<typename _CharT, typename _Traits, typename _Alloc,
458 template <typename, typename, typename> class _Base>
459 int
460 __versa_string<_CharT, _Traits, _Alloc, _Base>::
compare(size_type __pos,size_type __n,const __versa_string & __str) const461 compare(size_type __pos, size_type __n, const __versa_string& __str) const
462 {
463 _M_check(__pos, "__versa_string::compare");
464 __n = _M_limit(__pos, __n);
465 const size_type __osize = __str.size();
466 const size_type __len = std::min(__n, __osize);
467 int __r = traits_type::compare(this->_M_data() + __pos,
468 __str.data(), __len);
469 if (!__r)
470 __r = __n - __osize;
471 return __r;
472 }
473
474 template<typename _CharT, typename _Traits, typename _Alloc,
475 template <typename, typename, typename> class _Base>
476 int
477 __versa_string<_CharT, _Traits, _Alloc, _Base>::
compare(size_type __pos1,size_type __n1,const __versa_string & __str,size_type __pos2,size_type __n2) const478 compare(size_type __pos1, size_type __n1, const __versa_string& __str,
479 size_type __pos2, size_type __n2) const
480 {
481 _M_check(__pos1, "__versa_string::compare");
482 __str._M_check(__pos2, "__versa_string::compare");
483 __n1 = _M_limit(__pos1, __n1);
484 __n2 = __str._M_limit(__pos2, __n2);
485 const size_type __len = std::min(__n1, __n2);
486 int __r = traits_type::compare(this->_M_data() + __pos1,
487 __str.data() + __pos2, __len);
488 if (!__r)
489 __r = __n1 - __n2;
490 return __r;
491 }
492
493 template<typename _CharT, typename _Traits, typename _Alloc,
494 template <typename, typename, typename> class _Base>
495 int
496 __versa_string<_CharT, _Traits, _Alloc, _Base>::
compare(const _CharT * __s) const497 compare(const _CharT* __s) const
498 {
499 __glibcxx_requires_string(__s);
500 const size_type __size = this->size();
501 const size_type __osize = traits_type::length(__s);
502 const size_type __len = std::min(__size, __osize);
503 int __r = traits_type::compare(this->_M_data(), __s, __len);
504 if (!__r)
505 __r = __size - __osize;
506 return __r;
507 }
508
509 template<typename _CharT, typename _Traits, typename _Alloc,
510 template <typename, typename, typename> class _Base>
511 int
512 __versa_string <_CharT, _Traits, _Alloc, _Base>::
compare(size_type __pos,size_type __n1,const _CharT * __s) const513 compare(size_type __pos, size_type __n1, const _CharT* __s) const
514 {
515 __glibcxx_requires_string(__s);
516 _M_check(__pos, "__versa_string::compare");
517 __n1 = _M_limit(__pos, __n1);
518 const size_type __osize = traits_type::length(__s);
519 const size_type __len = std::min(__n1, __osize);
520 int __r = traits_type::compare(this->_M_data() + __pos, __s, __len);
521 if (!__r)
522 __r = __n1 - __osize;
523 return __r;
524 }
525
526 template<typename _CharT, typename _Traits, typename _Alloc,
527 template <typename, typename, typename> class _Base>
528 int
529 __versa_string <_CharT, _Traits, _Alloc, _Base>::
compare(size_type __pos,size_type __n1,const _CharT * __s,size_type __n2) const530 compare(size_type __pos, size_type __n1, const _CharT* __s,
531 size_type __n2) const
532 {
533 __glibcxx_requires_string_len(__s, __n2);
534 _M_check(__pos, "__versa_string::compare");
535 __n1 = _M_limit(__pos, __n1);
536 const size_type __len = std::min(__n1, __n2);
537 int __r = traits_type::compare(this->_M_data() + __pos, __s, __len);
538 if (!__r)
539 __r = __n1 - __n2;
540 return __r;
541 }
542
543 _GLIBCXX_END_NAMESPACE
544
_GLIBCXX_BEGIN_NAMESPACE(std)545 _GLIBCXX_BEGIN_NAMESPACE(std)
546
547 template<typename _CharT, typename _Traits, typename _Alloc,
548 template <typename, typename, typename> class _Base>
549 basic_istream<_CharT, _Traits>&
550 operator>>(basic_istream<_CharT, _Traits>& __in,
551 __gnu_cxx::__versa_string<_CharT, _Traits,
552 _Alloc, _Base>& __str)
553 {
554 typedef basic_istream<_CharT, _Traits> __istream_type;
555 typedef typename __istream_type::int_type __int_type;
556 typedef typename __istream_type::__streambuf_type __streambuf_type;
557 typedef typename __istream_type::__ctype_type __ctype_type;
558 typedef __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>
559 __string_type;
560 typedef typename __string_type::size_type __size_type;
561
562 __size_type __extracted = 0;
563 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
564 typename __istream_type::sentry __cerb(__in, false);
565 if (__cerb)
566 {
567 try
568 {
569 // Avoid reallocation for common case.
570 __str.erase();
571 _CharT __buf[128];
572 __size_type __len = 0;
573 const streamsize __w = __in.width();
574 const __size_type __n = __w > 0 ? static_cast<__size_type>(__w)
575 : __str.max_size();
576 const __ctype_type& __ct = use_facet<__ctype_type>(__in.getloc());
577 const __int_type __eof = _Traits::eof();
578 __streambuf_type* __sb = __in.rdbuf();
579 __int_type __c = __sb->sgetc();
580
581 while (__extracted < __n
582 && !_Traits::eq_int_type(__c, __eof)
583 && !__ct.is(ctype_base::space, _Traits::to_char_type(__c)))
584 {
585 if (__len == sizeof(__buf) / sizeof(_CharT))
586 {
587 __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
588 __len = 0;
589 }
590 __buf[__len++] = _Traits::to_char_type(__c);
591 ++__extracted;
592 __c = __sb->snextc();
593 }
594 __str.append(__buf, __len);
595
596 if (_Traits::eq_int_type(__c, __eof))
597 __err |= ios_base::eofbit;
598 __in.width(0);
599 }
600 catch(...)
601 {
602 // _GLIBCXX_RESOLVE_LIB_DEFECTS
603 // 91. Description of operator>> and getline() for string<>
604 // might cause endless loop
605 __in._M_setstate(ios_base::badbit);
606 }
607 }
608 // 211. operator>>(istream&, string&) doesn't set failbit
609 if (!__extracted)
610 __err |= ios_base::failbit;
611 if (__err)
612 __in.setstate(__err);
613 return __in;
614 }
615
616 template<typename _CharT, typename _Traits, typename _Alloc,
617 template <typename, typename, typename> class _Base>
618 basic_istream<_CharT, _Traits>&
getline(basic_istream<_CharT,_Traits> & __in,__gnu_cxx::__versa_string<_CharT,_Traits,_Alloc,_Base> & __str,_CharT __delim)619 getline(basic_istream<_CharT, _Traits>& __in,
620 __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>& __str,
621 _CharT __delim)
622 {
623 typedef basic_istream<_CharT, _Traits> __istream_type;
624 typedef typename __istream_type::int_type __int_type;
625 typedef typename __istream_type::__streambuf_type __streambuf_type;
626 typedef typename __istream_type::__ctype_type __ctype_type;
627 typedef __gnu_cxx::__versa_string<_CharT, _Traits, _Alloc, _Base>
628 __string_type;
629 typedef typename __string_type::size_type __size_type;
630
631 __size_type __extracted = 0;
632 const __size_type __n = __str.max_size();
633 ios_base::iostate __err = ios_base::iostate(ios_base::goodbit);
634 typename __istream_type::sentry __cerb(__in, true);
635 if (__cerb)
636 {
637 try
638 {
639 // Avoid reallocation for common case.
640 __str.erase();
641 _CharT __buf[128];
642 __size_type __len = 0;
643 const __int_type __idelim = _Traits::to_int_type(__delim);
644 const __int_type __eof = _Traits::eof();
645 __streambuf_type* __sb = __in.rdbuf();
646 __int_type __c = __sb->sgetc();
647
648 while (__extracted < __n
649 && !_Traits::eq_int_type(__c, __eof)
650 && !_Traits::eq_int_type(__c, __idelim))
651 {
652 if (__len == sizeof(__buf) / sizeof(_CharT))
653 {
654 __str.append(__buf, sizeof(__buf) / sizeof(_CharT));
655 __len = 0;
656 }
657 __buf[__len++] = _Traits::to_char_type(__c);
658 ++__extracted;
659 __c = __sb->snextc();
660 }
661 __str.append(__buf, __len);
662
663 if (_Traits::eq_int_type(__c, __eof))
664 __err |= ios_base::eofbit;
665 else if (_Traits::eq_int_type(__c, __idelim))
666 {
667 ++__extracted;
668 __sb->sbumpc();
669 }
670 else
671 __err |= ios_base::failbit;
672 }
673 catch(...)
674 {
675 // _GLIBCXX_RESOLVE_LIB_DEFECTS
676 // 91. Description of operator>> and getline() for string<>
677 // might cause endless loop
678 __in._M_setstate(ios_base::badbit);
679 }
680 }
681 if (!__extracted)
682 __err |= ios_base::failbit;
683 if (__err)
684 __in.setstate(__err);
685 return __in;
686 }
687
688 _GLIBCXX_END_NAMESPACE
689
690 #endif // _VSTRING_TCC
691