1// Locale support -*- C++ -*-
2
3// Copyright (C) 1997-2015 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 3, 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// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file bits/locale_facets.tcc
26 * This is an internal header file, included by other library headers.
27 * Do not attempt to use it directly. @headername{locale}
28 */
29
30#ifndef _LOCALE_FACETS_TCC
31#define _LOCALE_FACETS_TCC 1
32
33#pragma GCC system_header
34
35namespace std _GLIBCXX_VISIBILITY(default)
36{
37_GLIBCXX_BEGIN_NAMESPACE_VERSION
38
39 // Routine to access a cache for the facet. If the cache didn't
40 // exist before, it gets constructed on the fly.
41 template<typename _Facet>
42 struct __use_cache
43 {
44 const _Facet*
45 operator() (const locale& __loc) const;
46 };
47
48 // Specializations.
49 template<typename _CharT>
50 struct __use_cache<__numpunct_cache<_CharT> >
51 {
52 const __numpunct_cache<_CharT>*
53 operator() (const locale& __loc) const
54 {
55 const size_t __i = numpunct<_CharT>::id._M_id();
56 const locale::facet** __caches = __loc._M_impl->_M_caches;
57 if (!__caches[__i])
58 {
59 __numpunct_cache<_CharT>* __tmp = 0;
60 __try
61 {
62 __tmp = new __numpunct_cache<_CharT>;
63 __tmp->_M_cache(__loc);
64 }
65 __catch(...)
66 {
67 delete __tmp;
68 __throw_exception_again;
69 }
70 __loc._M_impl->_M_install_cache(__tmp, __i);
71 }
72 return static_cast<const __numpunct_cache<_CharT>*>(__caches[__i]);
73 }
74 };
75
76 template<typename _CharT>
77 void
78 __numpunct_cache<_CharT>::_M_cache(const locale& __loc)
79 {
80 const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
81
82 char* __grouping = 0;
83 _CharT* __truename = 0;
84 _CharT* __falsename = 0;
85 __try
86 {
87 const string& __g = __np.grouping();
88 _M_grouping_size = __g.size();
89 __grouping = new char[_M_grouping_size];
90 __g.copy(__grouping, _M_grouping_size);
91 _M_use_grouping = (_M_grouping_size
92 && static_cast<signed char>(__grouping[0]) > 0
93 && (__grouping[0]
94 != __gnu_cxx::__numeric_traits<char>::__max));
95
96 const basic_string<_CharT>& __tn = __np.truename();
97 _M_truename_size = __tn.size();
98 __truename = new _CharT[_M_truename_size];
99 __tn.copy(__truename, _M_truename_size);
100
101 const basic_string<_CharT>& __fn = __np.falsename();
102 _M_falsename_size = __fn.size();
103 __falsename = new _CharT[_M_falsename_size];
104 __fn.copy(__falsename, _M_falsename_size);
105
106 _M_decimal_point = __np.decimal_point();
107 _M_thousands_sep = __np.thousands_sep();
108
109 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__loc);
110 __ct.widen(__num_base::_S_atoms_out,
111 __num_base::_S_atoms_out
112 + __num_base::_S_oend, _M_atoms_out);
113 __ct.widen(__num_base::_S_atoms_in,
114 __num_base::_S_atoms_in
115 + __num_base::_S_iend, _M_atoms_in);
116
117 _M_grouping = __grouping;
118 _M_truename = __truename;
119 _M_falsename = __falsename;
120 _M_allocated = true;
121 }
122 __catch(...)
123 {
124 delete [] __grouping;
125 delete [] __truename;
126 delete [] __falsename;
127 __throw_exception_again;
128 }
129 }
130
131 // Used by both numeric and monetary facets.
132 // Check to make sure that the __grouping_tmp string constructed in
133 // money_get or num_get matches the canonical grouping for a given
134 // locale.
135 // __grouping_tmp is parsed L to R
136 // 1,222,444 == __grouping_tmp of "\1\3\3"
137 // __grouping is parsed R to L
138 // 1,222,444 == __grouping of "\3" == "\3\3\3"
139 _GLIBCXX_PURE bool
140 __verify_grouping(const char* __grouping, size_t __grouping_size,
141 const string& __grouping_tmp) throw ();
142
143_GLIBCXX_BEGIN_NAMESPACE_LDBL
144
145 template<typename _CharT, typename _InIter>
146 _GLIBCXX_DEFAULT_ABI_TAG
147 _InIter
148 num_get<_CharT, _InIter>::
149 _M_extract_float(_InIter __beg, _InIter __end, ios_base& __io,
150 ios_base::iostate& __err, string& __xtrc) const
151 {
152 typedef char_traits<_CharT> __traits_type;
153 typedef __numpunct_cache<_CharT> __cache_type;
154 __use_cache<__cache_type> __uc;
155 const locale& __loc = __io._M_getloc();
156 const __cache_type* __lc = __uc(__loc);
157 const _CharT* __lit = __lc->_M_atoms_in;
158 char_type __c = char_type();
159
160 // True if __beg becomes equal to __end.
161 bool __testeof = __beg == __end;
162
163 // First check for sign.
164 if (!__testeof)
165 {
166 __c = *__beg;
167 const bool __plus = __c == __lit[__num_base::_S_iplus];
168 if ((__plus || __c == __lit[__num_base::_S_iminus])
169 && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
170 && !(__c == __lc->_M_decimal_point))
171 {
172 __xtrc += __plus ? '+' : '-';
173 if (++__beg != __end)
174 __c = *__beg;
175 else
176 __testeof = true;
177 }
178 }
179
180 // Next, look for leading zeros.
181 bool __found_mantissa = false;
182 int __sep_pos = 0;
183 while (!__testeof)
184 {
185 if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
186 || __c == __lc->_M_decimal_point)
187 break;
188 else if (__c == __lit[__num_base::_S_izero])
189 {
190 if (!__found_mantissa)
191 {
192 __xtrc += '0';
193 __found_mantissa = true;
194 }
195 ++__sep_pos;
196
197 if (++__beg != __end)
198 __c = *__beg;
199 else
200 __testeof = true;
201 }
202 else
203 break;
204 }
205
206 // Only need acceptable digits for floating point numbers.
207 bool __found_dec = false;
208 bool __found_sci = false;
209 string __found_grouping;
210 if (__lc->_M_use_grouping)
211 __found_grouping.reserve(32);
212 const char_type* __lit_zero = __lit + __num_base::_S_izero;
213
214 if (!__lc->_M_allocated)
215 // "C" locale
216 while (!__testeof)
217 {
218 const int __digit = _M_find(__lit_zero, 10, __c);
219 if (__digit != -1)
220 {
221 __xtrc += '0' + __digit;
222 __found_mantissa = true;
223 }
224 else if (__c == __lc->_M_decimal_point
225 && !__found_dec && !__found_sci)
226 {
227 __xtrc += '.';
228 __found_dec = true;
229 }
230 else if ((__c == __lit[__num_base::_S_ie]
231 || __c == __lit[__num_base::_S_iE])
232 && !__found_sci && __found_mantissa)
233 {
234 // Scientific notation.
235 __xtrc += 'e';
236 __found_sci = true;
237
238 // Remove optional plus or minus sign, if they exist.
239 if (++__beg != __end)
240 {
241 __c = *__beg;
242 const bool __plus = __c == __lit[__num_base::_S_iplus];
243 if (__plus || __c == __lit[__num_base::_S_iminus])
244 __xtrc += __plus ? '+' : '-';
245 else
246 continue;
247 }
248 else
249 {
250 __testeof = true;
251 break;
252 }
253 }
254 else
255 break;
256
257 if (++__beg != __end)
258 __c = *__beg;
259 else
260 __testeof = true;
261 }
262 else
263 while (!__testeof)
264 {
265 // According to 22.2.2.1.2, p8-9, first look for thousands_sep
266 // and decimal_point.
267 if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
268 {
269 if (!__found_dec && !__found_sci)
270 {
271 // NB: Thousands separator at the beginning of a string
272 // is a no-no, as is two consecutive thousands separators.
273 if (__sep_pos)
274 {
275 __found_grouping += static_cast<char>(__sep_pos);
276 __sep_pos = 0;
277 }
278 else
279 {
280 // NB: __convert_to_v will not assign __v and will
281 // set the failbit.
282 __xtrc.clear();
283 break;
284 }
285 }
286 else
287 break;
288 }
289 else if (__c == __lc->_M_decimal_point)
290 {
291 if (!__found_dec && !__found_sci)
292 {
293 // If no grouping chars are seen, no grouping check
294 // is applied. Therefore __found_grouping is adjusted
295 // only if decimal_point comes after some thousands_sep.
296 if (__found_grouping.size())
297 __found_grouping += static_cast<char>(__sep_pos);
298 __xtrc += '.';
299 __found_dec = true;
300 }
301 else
302 break;
303 }
304 else
305 {
306 const char_type* __q =
307 __traits_type::find(__lit_zero, 10, __c);
308 if (__q)
309 {
310 __xtrc += '0' + (__q - __lit_zero);
311 __found_mantissa = true;
312 ++__sep_pos;
313 }
314 else if ((__c == __lit[__num_base::_S_ie]
315 || __c == __lit[__num_base::_S_iE])
316 && !__found_sci && __found_mantissa)
317 {
318 // Scientific notation.
319 if (__found_grouping.size() && !__found_dec)
320 __found_grouping += static_cast<char>(__sep_pos);
321 __xtrc += 'e';
322 __found_sci = true;
323
324 // Remove optional plus or minus sign, if they exist.
325 if (++__beg != __end)
326 {
327 __c = *__beg;
328 const bool __plus = __c == __lit[__num_base::_S_iplus];
329 if ((__plus || __c == __lit[__num_base::_S_iminus])
330 && !(__lc->_M_use_grouping
331 && __c == __lc->_M_thousands_sep)
332 && !(__c == __lc->_M_decimal_point))
333 __xtrc += __plus ? '+' : '-';
334 else
335 continue;
336 }
337 else
338 {
339 __testeof = true;
340 break;
341 }
342 }
343 else
344 break;
345 }
346
347 if (++__beg != __end)
348 __c = *__beg;
349 else
350 __testeof = true;
351 }
352
353 // Digit grouping is checked. If grouping and found_grouping don't
354 // match, then get very very upset, and set failbit.
355 if (__found_grouping.size())
356 {
357 // Add the ending grouping if a decimal or 'e'/'E' wasn't found.
358 if (!__found_dec && !__found_sci)
359 __found_grouping += static_cast<char>(__sep_pos);
360
361 if (!std::__verify_grouping(__lc->_M_grouping,
362 __lc->_M_grouping_size,
363 __found_grouping))
364 __err = ios_base::failbit;
365 }
366
367 return __beg;
368 }
369
370 template<typename _CharT, typename _InIter>
371 template<typename _ValueT>
372 _GLIBCXX_DEFAULT_ABI_TAG
373 _InIter
374 num_get<_CharT, _InIter>::
375 _M_extract_int(_InIter __beg, _InIter __end, ios_base& __io,
376 ios_base::iostate& __err, _ValueT& __v) const
377 {
378 typedef char_traits<_CharT> __traits_type;
379 using __gnu_cxx::__add_unsigned;
380 typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
381 typedef __numpunct_cache<_CharT> __cache_type;
382 __use_cache<__cache_type> __uc;
383 const locale& __loc = __io._M_getloc();
384 const __cache_type* __lc = __uc(__loc);
385 const _CharT* __lit = __lc->_M_atoms_in;
386 char_type __c = char_type();
387
388 // NB: Iff __basefield == 0, __base can change based on contents.
389 const ios_base::fmtflags __basefield = __io.flags()
390 & ios_base::basefield;
391 const bool __oct = __basefield == ios_base::oct;
392 int __base = __oct ? 8 : (__basefield == ios_base::hex ? 16 : 10);
393
394 // True if __beg becomes equal to __end.
395 bool __testeof = __beg == __end;
396
397 // First check for sign.
398 bool __negative = false;
399 if (!__testeof)
400 {
401 __c = *__beg;
402 __negative = __c == __lit[__num_base::_S_iminus];
403 if ((__negative || __c == __lit[__num_base::_S_iplus])
404 && !(__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
405 && !(__c == __lc->_M_decimal_point))
406 {
407 if (++__beg != __end)
408 __c = *__beg;
409 else
410 __testeof = true;
411 }
412 }
413
414 // Next, look for leading zeros and check required digits
415 // for base formats.
416 bool __found_zero = false;
417 int __sep_pos = 0;
418 while (!__testeof)
419 {
420 if ((__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
421 || __c == __lc->_M_decimal_point)
422 break;
423 else if (__c == __lit[__num_base::_S_izero]
424 && (!__found_zero || __base == 10))
425 {
426 __found_zero = true;
427 ++__sep_pos;
428 if (__basefield == 0)
429 __base = 8;
430 if (__base == 8)
431 __sep_pos = 0;
432 }
433 else if (__found_zero
434 && (__c == __lit[__num_base::_S_ix]
435 || __c == __lit[__num_base::_S_iX]))
436 {
437 if (__basefield == 0)
438 __base = 16;
439 if (__base == 16)
440 {
441 __found_zero = false;
442 __sep_pos = 0;
443 }
444 else
445 break;
446 }
447 else
448 break;
449
450 if (++__beg != __end)
451 {
452 __c = *__beg;
453 if (!__found_zero)
454 break;
455 }
456 else
457 __testeof = true;
458 }
459
460 // At this point, base is determined. If not hex, only allow
461 // base digits as valid input.
462 const size_t __len = (__base == 16 ? __num_base::_S_iend
463 - __num_base::_S_izero : __base);
464
465 // Extract.
466 string __found_grouping;
467 if (__lc->_M_use_grouping)
468 __found_grouping.reserve(32);
469 bool __testfail = false;
470 bool __testoverflow = false;
471 const __unsigned_type __max =
472 (__negative && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
473 ? -__gnu_cxx::__numeric_traits<_ValueT>::__min
474 : __gnu_cxx::__numeric_traits<_ValueT>::__max;
475 const __unsigned_type __smax = __max / __base;
476 __unsigned_type __result = 0;
477 int __digit = 0;
478 const char_type* __lit_zero = __lit + __num_base::_S_izero;
479
480 if (!__lc->_M_allocated)
481 // "C" locale
482 while (!__testeof)
483 {
484 __digit = _M_find(__lit_zero, __len, __c);
485 if (__digit == -1)
486 break;
487
488 if (__result > __smax)
489 __testoverflow = true;
490 else
491 {
492 __result *= __base;
493 __testoverflow |= __result > __max - __digit;
494 __result += __digit;
495 ++__sep_pos;
496 }
497
498 if (++__beg != __end)
499 __c = *__beg;
500 else
501 __testeof = true;
502 }
503 else
504 while (!__testeof)
505 {
506 // According to 22.2.2.1.2, p8-9, first look for thousands_sep
507 // and decimal_point.
508 if (__lc->_M_use_grouping && __c == __lc->_M_thousands_sep)
509 {
510 // NB: Thousands separator at the beginning of a string
511 // is a no-no, as is two consecutive thousands separators.
512 if (__sep_pos)
513 {
514 __found_grouping += static_cast<char>(__sep_pos);
515 __sep_pos = 0;
516 }
517 else
518 {
519 __testfail = true;
520 break;
521 }
522 }
523 else if (__c == __lc->_M_decimal_point)
524 break;
525 else
526 {
527 const char_type* __q =
528 __traits_type::find(__lit_zero, __len, __c);
529 if (!__q)
530 break;
531
532 __digit = __q - __lit_zero;
533 if (__digit > 15)
534 __digit -= 6;
535 if (__result > __smax)
536 __testoverflow = true;
537 else
538 {
539 __result *= __base;
540 __testoverflow |= __result > __max - __digit;
541 __result += __digit;
542 ++__sep_pos;
543 }
544 }
545
546 if (++__beg != __end)
547 __c = *__beg;
548 else
549 __testeof = true;
550 }
551
552 // Digit grouping is checked. If grouping and found_grouping don't
553 // match, then get very very upset, and set failbit.
554 if (__found_grouping.size())
555 {
556 // Add the ending grouping.
557 __found_grouping += static_cast<char>(__sep_pos);
558
559 if (!std::__verify_grouping(__lc->_M_grouping,
560 __lc->_M_grouping_size,
561 __found_grouping))
562 __err = ios_base::failbit;
563 }
564
565 // _GLIBCXX_RESOLVE_LIB_DEFECTS
566 // 23. Num_get overflow result.
567 if ((!__sep_pos && !__found_zero && !__found_grouping.size())
568 || __testfail)
569 {
570 __v = 0;
571 __err = ios_base::failbit;
572 }
573 else if (__testoverflow)
574 {
575 if (__negative
576 && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
577 __v = __gnu_cxx::__numeric_traits<_ValueT>::__min;
578 else
579 __v = __gnu_cxx::__numeric_traits<_ValueT>::__max;
580 __err = ios_base::failbit;
581 }
582 else
583 __v = __negative ? -__result : __result;
584
585 if (__testeof)
586 __err |= ios_base::eofbit;
587 return __beg;
588 }
589
590 // _GLIBCXX_RESOLVE_LIB_DEFECTS
591 // 17. Bad bool parsing
592 template<typename _CharT, typename _InIter>
593 _InIter
594 num_get<_CharT, _InIter>::
595 do_get(iter_type __beg, iter_type __end, ios_base& __io,
596 ios_base::iostate& __err, bool& __v) const
597 {
598 if (!(__io.flags() & ios_base::boolalpha))
599 {
600 // Parse bool values as long.
601 // NB: We can't just call do_get(long) here, as it might
602 // refer to a derived class.
603 long __l = -1;
604 __beg = _M_extract_int(__beg, __end, __io, __err, __l);
605 if (__l == 0 || __l == 1)
606 __v = bool(__l);
607 else
608 {
609 // _GLIBCXX_RESOLVE_LIB_DEFECTS
610 // 23. Num_get overflow result.
611 __v = true;
612 __err = ios_base::failbit;
613 if (__beg == __end)
614 __err |= ios_base::eofbit;
615 }
616 }
617 else
618 {
619 // Parse bool values as alphanumeric.
620 typedef __numpunct_cache<_CharT> __cache_type;
621 __use_cache<__cache_type> __uc;
622 const locale& __loc = __io._M_getloc();
623 const __cache_type* __lc = __uc(__loc);
624
625 bool __testf = true;
626 bool __testt = true;
627 bool __donef = __lc->_M_falsename_size == 0;
628 bool __donet = __lc->_M_truename_size == 0;
629 bool __testeof = false;
630 size_t __n = 0;
631 while (!__donef || !__donet)
632 {
633 if (__beg == __end)
634 {
635 __testeof = true;
636 break;
637 }
638
639 const char_type __c = *__beg;
640
641 if (!__donef)
642 __testf = __c == __lc->_M_falsename[__n];
643
644 if (!__testf && __donet)
645 break;
646
647 if (!__donet)
648 __testt = __c == __lc->_M_truename[__n];
649
650 if (!__testt && __donef)
651 break;
652
653 if (!__testt && !__testf)
654 break;
655
656 ++__n;
657 ++__beg;
658
659 __donef = !__testf || __n >= __lc->_M_falsename_size;
660 __donet = !__testt || __n >= __lc->_M_truename_size;
661 }
662 if (__testf && __n == __lc->_M_falsename_size && __n)
663 {
664 __v = false;
665 if (__testt && __n == __lc->_M_truename_size)
666 __err = ios_base::failbit;
667 else
668 __err = __testeof ? ios_base::eofbit : ios_base::goodbit;
669 }
670 else if (__testt && __n == __lc->_M_truename_size && __n)
671 {
672 __v = true;
673 __err = __testeof ? ios_base::eofbit : ios_base::goodbit;
674 }
675 else
676 {
677 // _GLIBCXX_RESOLVE_LIB_DEFECTS
678 // 23. Num_get overflow result.
679 __v = false;
680 __err = ios_base::failbit;
681 if (__testeof)
682 __err |= ios_base::eofbit;
683 }
684 }
685 return __beg;
686 }
687
688 template<typename _CharT, typename _InIter>
689 _InIter
690 num_get<_CharT, _InIter>::
691 do_get(iter_type __beg, iter_type __end, ios_base& __io,
692 ios_base::iostate& __err, float& __v) const
693 {
694 string __xtrc;
695 __xtrc.reserve(32);
696 __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
697 std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
698 if (__beg == __end)
699 __err |= ios_base::eofbit;
700 return __beg;
701 }
702
703 template<typename _CharT, typename _InIter>
704 _InIter
705 num_get<_CharT, _InIter>::
706 do_get(iter_type __beg, iter_type __end, ios_base& __io,
707 ios_base::iostate& __err, double& __v) const
708 {
709 string __xtrc;
710 __xtrc.reserve(32);
711 __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
712 std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
713 if (__beg == __end)
714 __err |= ios_base::eofbit;
715 return __beg;
716 }
717
718#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
719 template<typename _CharT, typename _InIter>
720 _InIter
721 num_get<_CharT, _InIter>::
722 __do_get(iter_type __beg, iter_type __end, ios_base& __io,
723 ios_base::iostate& __err, double& __v) const
724 {
725 string __xtrc;
726 __xtrc.reserve(32);
727 __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
728 std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
729 if (__beg == __end)
730 __err |= ios_base::eofbit;
731 return __beg;
732 }
733#endif
734
735 template<typename _CharT, typename _InIter>
736 _InIter
737 num_get<_CharT, _InIter>::
738 do_get(iter_type __beg, iter_type __end, ios_base& __io,
739 ios_base::iostate& __err, long double& __v) const
740 {
741 string __xtrc;
742 __xtrc.reserve(32);
743 __beg = _M_extract_float(__beg, __end, __io, __err, __xtrc);
744 std::__convert_to_v(__xtrc.c_str(), __v, __err, _S_get_c_locale());
745 if (__beg == __end)
746 __err |= ios_base::eofbit;
747 return __beg;
748 }
749
750 template<typename _CharT, typename _InIter>
751 _InIter
752 num_get<_CharT, _InIter>::
753 do_get(iter_type __beg, iter_type __end, ios_base& __io,
754 ios_base::iostate& __err, void*& __v) const
755 {
756 // Prepare for hex formatted input.
757 typedef ios_base::fmtflags fmtflags;
758 const fmtflags __fmt = __io.flags();
759 __io.flags((__fmt & ~ios_base::basefield) | ios_base::hex);
760
761 typedef __gnu_cxx::__conditional_type<(sizeof(void*)
762 <= sizeof(unsigned long)),
763 unsigned long, unsigned long long>::__type _UIntPtrType;
764
765 _UIntPtrType __ul;
766 __beg = _M_extract_int(__beg, __end, __io, __err, __ul);
767
768 // Reset from hex formatted input.
769 __io.flags(__fmt);
770
771 __v = reinterpret_cast<void*>(__ul);
772 return __beg;
773 }
774
775 // For use by integer and floating-point types after they have been
776 // converted into a char_type string.
777 template<typename _CharT, typename _OutIter>
778 void
779 num_put<_CharT, _OutIter>::
780 _M_pad(_CharT __fill, streamsize __w, ios_base& __io,
781 _CharT* __new, const _CharT* __cs, int& __len) const
782 {
783 // [22.2.2.2.2] Stage 3.
784 // If necessary, pad.
785 __pad<_CharT, char_traits<_CharT> >::_S_pad(__io, __fill, __new,
786 __cs, __w, __len);
787 __len = static_cast<int>(__w);
788 }
789
790_GLIBCXX_END_NAMESPACE_LDBL
791
792 template<typename _CharT, typename _ValueT>
793 int
794 __int_to_char(_CharT* __bufend, _ValueT __v, const _CharT* __lit,
795 ios_base::fmtflags __flags, bool __dec)
796 {
797 _CharT* __buf = __bufend;
798 if (__builtin_expect(__dec, true))
799 {
800 // Decimal.
801 do
802 {
803 *--__buf = __lit[(__v % 10) + __num_base::_S_odigits];
804 __v /= 10;
805 }
806 while (__v != 0);
807 }
808 else if ((__flags & ios_base::basefield) == ios_base::oct)
809 {
810 // Octal.
811 do
812 {
813 *--__buf = __lit[(__v & 0x7) + __num_base::_S_odigits];
814 __v >>= 3;
815 }
816 while (__v != 0);
817 }
818 else
819 {
820 // Hex.
821 const bool __uppercase = __flags & ios_base::uppercase;
822 const int __case_offset = __uppercase ? __num_base::_S_oudigits
823 : __num_base::_S_odigits;
824 do
825 {
826 *--__buf = __lit[(__v & 0xf) + __case_offset];
827 __v >>= 4;
828 }
829 while (__v != 0);
830 }
831 return __bufend - __buf;
832 }
833
834_GLIBCXX_BEGIN_NAMESPACE_LDBL
835
836 template<typename _CharT, typename _OutIter>
837 void
838 num_put<_CharT, _OutIter>::
839 _M_group_int(const char* __grouping, size_t __grouping_size, _CharT __sep,
840 ios_base&, _CharT* __new, _CharT* __cs, int& __len) const
841 {
842 _CharT* __p = std::__add_grouping(__new, __sep, __grouping,
843 __grouping_size, __cs, __cs + __len);
844 __len = __p - __new;
845 }
846
847 template<typename _CharT, typename _OutIter>
848 template<typename _ValueT>
849 _OutIter
850 num_put<_CharT, _OutIter>::
851 _M_insert_int(_OutIter __s, ios_base& __io, _CharT __fill,
852 _ValueT __v) const
853 {
854 using __gnu_cxx::__add_unsigned;
855 typedef typename __add_unsigned<_ValueT>::__type __unsigned_type;
856 typedef __numpunct_cache<_CharT> __cache_type;
857 __use_cache<__cache_type> __uc;
858 const locale& __loc = __io._M_getloc();
859 const __cache_type* __lc = __uc(__loc);
860 const _CharT* __lit = __lc->_M_atoms_out;
861 const ios_base::fmtflags __flags = __io.flags();
862
863 // Long enough to hold hex, dec, and octal representations.
864 const int __ilen = 5 * sizeof(_ValueT);
865 _CharT* __cs = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
866 * __ilen));
867
868 // [22.2.2.2.2] Stage 1, numeric conversion to character.
869 // Result is returned right-justified in the buffer.
870 const ios_base::fmtflags __basefield = __flags & ios_base::basefield;
871 const bool __dec = (__basefield != ios_base::oct
872 && __basefield != ios_base::hex);
873 const __unsigned_type __u = ((__v > 0 || !__dec)
874 ? __unsigned_type(__v)
875 : -__unsigned_type(__v));
876 int __len = __int_to_char(__cs + __ilen, __u, __lit, __flags, __dec);
877 __cs += __ilen - __len;
878
879 // Add grouping, if necessary.
880 if (__lc->_M_use_grouping)
881 {
882 // Grouping can add (almost) as many separators as the number
883 // of digits + space is reserved for numeric base or sign.
884 _CharT* __cs2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
885 * (__len + 1)
886 * 2));
887 _M_group_int(__lc->_M_grouping, __lc->_M_grouping_size,
888 __lc->_M_thousands_sep, __io, __cs2 + 2, __cs, __len);
889 __cs = __cs2 + 2;
890 }
891
892 // Complete Stage 1, prepend numeric base or sign.
893 if (__builtin_expect(__dec, true))
894 {
895 // Decimal.
896 if (__v >= 0)
897 {
898 if (bool(__flags & ios_base::showpos)
899 && __gnu_cxx::__numeric_traits<_ValueT>::__is_signed)
900 *--__cs = __lit[__num_base::_S_oplus], ++__len;
901 }
902 else
903 *--__cs = __lit[__num_base::_S_ominus], ++__len;
904 }
905 else if (bool(__flags & ios_base::showbase) && __v)
906 {
907 if (__basefield == ios_base::oct)
908 *--__cs = __lit[__num_base::_S_odigits], ++__len;
909 else
910 {
911 // 'x' or 'X'
912 const bool __uppercase = __flags & ios_base::uppercase;
913 *--__cs = __lit[__num_base::_S_ox + __uppercase];
914 // '0'
915 *--__cs = __lit[__num_base::_S_odigits];
916 __len += 2;
917 }
918 }
919
920 // Pad.
921 const streamsize __w = __io.width();
922 if (__w > static_cast<streamsize>(__len))
923 {
924 _CharT* __cs3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
925 * __w));
926 _M_pad(__fill, __w, __io, __cs3, __cs, __len);
927 __cs = __cs3;
928 }
929 __io.width(0);
930
931 // [22.2.2.2.2] Stage 4.
932 // Write resulting, fully-formatted string to output iterator.
933 return std::__write(__s, __cs, __len);
934 }
935
936 template<typename _CharT, typename _OutIter>
937 void
938 num_put<_CharT, _OutIter>::
939 _M_group_float(const char* __grouping, size_t __grouping_size,
940 _CharT __sep, const _CharT* __p, _CharT* __new,
941 _CharT* __cs, int& __len) const
942 {
943 // _GLIBCXX_RESOLVE_LIB_DEFECTS
944 // 282. What types does numpunct grouping refer to?
945 // Add grouping, if necessary.
946 const int __declen = __p ? __p - __cs : __len;
947 _CharT* __p2 = std::__add_grouping(__new, __sep, __grouping,
948 __grouping_size,
949 __cs, __cs + __declen);
950
951 // Tack on decimal part.
952 int __newlen = __p2 - __new;
953 if (__p)
954 {
955 char_traits<_CharT>::copy(__p2, __p, __len - __declen);
956 __newlen += __len - __declen;
957 }
958 __len = __newlen;
959 }
960
961 // The following code uses vsnprintf (or vsprintf(), when
962 // _GLIBCXX_USE_C99 is not defined) to convert floating point values
963 // for insertion into a stream. An optimization would be to replace
964 // them with code that works directly on a wide buffer and then use
965 // __pad to do the padding. It would be good to replace them anyway
966 // to gain back the efficiency that C++ provides by knowing up front
967 // the type of the values to insert. Also, sprintf is dangerous
968 // since may lead to accidental buffer overruns. This
969 // implementation follows the C++ standard fairly directly as
970 // outlined in 22.2.2.2 [lib.locale.num.put]
971 template<typename _CharT, typename _OutIter>
972 template<typename _ValueT>
973 _OutIter
974 num_put<_CharT, _OutIter>::
975 _M_insert_float(_OutIter __s, ios_base& __io, _CharT __fill, char __mod,
976 _ValueT __v) const
977 {
978 typedef __numpunct_cache<_CharT> __cache_type;
979 __use_cache<__cache_type> __uc;
980 const locale& __loc = __io._M_getloc();
981 const __cache_type* __lc = __uc(__loc);
982
983 // Use default precision if out of range.
984 const streamsize __prec = __io.precision() < 0 ? 6 : __io.precision();
985
986 const int __max_digits =
987 __gnu_cxx::__numeric_traits<_ValueT>::__digits10;
988
989 // [22.2.2.2.2] Stage 1, numeric conversion to character.
990 int __len;
991 // Long enough for the max format spec.
992 char __fbuf[16];
993 __num_base::_S_format_float(__io, __fbuf, __mod);
994
995#ifdef _GLIBCXX_USE_C99
996 // Precision is always used except for hexfloat format.
997 const bool __use_prec =
998 (__io.flags() & ios_base::floatfield) != ios_base::floatfield;
999
1000 // First try a buffer perhaps big enough (most probably sufficient
1001 // for non-ios_base::fixed outputs)
1002 int __cs_size = __max_digits * 3;
1003 char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
1004 if (__use_prec)
1005 __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
1006 __fbuf, __prec, __v);
1007 else
1008 __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
1009 __fbuf, __v);
1010
1011 // If the buffer was not large enough, try again with the correct size.
1012 if (__len >= __cs_size)
1013 {
1014 __cs_size = __len + 1;
1015 __cs = static_cast<char*>(__builtin_alloca(__cs_size));
1016 if (__use_prec)
1017 __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
1018 __fbuf, __prec, __v);
1019 else
1020 __len = std::__convert_from_v(_S_get_c_locale(), __cs, __cs_size,
1021 __fbuf, __v);
1022 }
1023#else
1024 // Consider the possibility of long ios_base::fixed outputs
1025 const bool __fixed = __io.flags() & ios_base::fixed;
1026 const int __max_exp =
1027 __gnu_cxx::__numeric_traits<_ValueT>::__max_exponent10;
1028
1029 // The size of the output string is computed as follows.
1030 // ios_base::fixed outputs may need up to __max_exp + 1 chars
1031 // for the integer part + __prec chars for the fractional part
1032 // + 3 chars for sign, decimal point, '\0'. On the other hand,
1033 // for non-fixed outputs __max_digits * 2 + __prec chars are
1034 // largely sufficient.
1035 const int __cs_size = __fixed ? __max_exp + __prec + 4
1036 : __max_digits * 2 + __prec;
1037 char* __cs = static_cast<char*>(__builtin_alloca(__cs_size));
1038 __len = std::__convert_from_v(_S_get_c_locale(), __cs, 0, __fbuf,
1039 __prec, __v);
1040#endif
1041
1042 // [22.2.2.2.2] Stage 2, convert to char_type, using correct
1043 // numpunct.decimal_point() values for '.' and adding grouping.
1044 const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
1045
1046 _CharT* __ws = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1047 * __len));
1048 __ctype.widen(__cs, __cs + __len, __ws);
1049
1050 // Replace decimal point.
1051 _CharT* __wp = 0;
1052 const char* __p = char_traits<char>::find(__cs, __len, '.');
1053 if (__p)
1054 {
1055 __wp = __ws + (__p - __cs);
1056 *__wp = __lc->_M_decimal_point;
1057 }
1058
1059 // Add grouping, if necessary.
1060 // N.B. Make sure to not group things like 2e20, i.e., no decimal
1061 // point, scientific notation.
1062 if (__lc->_M_use_grouping
1063 && (__wp || __len < 3 || (__cs[1] <= '9' && __cs[2] <= '9'
1064 && __cs[1] >= '0' && __cs[2] >= '0')))
1065 {
1066 // Grouping can add (almost) as many separators as the
1067 // number of digits, but no more.
1068 _CharT* __ws2 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1069 * __len * 2));
1070
1071 streamsize __off = 0;
1072 if (__cs[0] == '-' || __cs[0] == '+')
1073 {
1074 __off = 1;
1075 __ws2[0] = __ws[0];
1076 __len -= 1;
1077 }
1078
1079 _M_group_float(__lc->_M_grouping, __lc->_M_grouping_size,
1080 __lc->_M_thousands_sep, __wp, __ws2 + __off,
1081 __ws + __off, __len);
1082 __len += __off;
1083
1084 __ws = __ws2;
1085 }
1086
1087 // Pad.
1088 const streamsize __w = __io.width();
1089 if (__w > static_cast<streamsize>(__len))
1090 {
1091 _CharT* __ws3 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1092 * __w));
1093 _M_pad(__fill, __w, __io, __ws3, __ws, __len);
1094 __ws = __ws3;
1095 }
1096 __io.width(0);
1097
1098 // [22.2.2.2.2] Stage 4.
1099 // Write resulting, fully-formatted string to output iterator.
1100 return std::__write(__s, __ws, __len);
1101 }
1102
1103 template<typename _CharT, typename _OutIter>
1104 _OutIter
1105 num_put<_CharT, _OutIter>::
1106 do_put(iter_type __s, ios_base& __io, char_type __fill, bool __v) const
1107 {
1108 const ios_base::fmtflags __flags = __io.flags();
1109 if ((__flags & ios_base::boolalpha) == 0)
1110 {
1111 const long __l = __v;
1112 __s = _M_insert_int(__s, __io, __fill, __l);
1113 }
1114 else
1115 {
1116 typedef __numpunct_cache<_CharT> __cache_type;
1117 __use_cache<__cache_type> __uc;
1118 const locale& __loc = __io._M_getloc();
1119 const __cache_type* __lc = __uc(__loc);
1120
1121 const _CharT* __name = __v ? __lc->_M_truename
1122 : __lc->_M_falsename;
1123 int __len = __v ? __lc->_M_truename_size
1124 : __lc->_M_falsename_size;
1125
1126 const streamsize __w = __io.width();
1127 if (__w > static_cast<streamsize>(__len))
1128 {
1129 const streamsize __plen = __w - __len;
1130 _CharT* __ps
1131 = static_cast<_CharT*>(__builtin_alloca(sizeof(_CharT)
1132 * __plen));
1133
1134 char_traits<_CharT>::assign(__ps, __plen, __fill);
1135 __io.width(0);
1136
1137 if ((__flags & ios_base::adjustfield) == ios_base::left)
1138 {
1139 __s = std::__write(__s, __name, __len);
1140 __s = std::__write(__s, __ps, __plen);
1141 }
1142 else
1143 {
1144 __s = std::__write(__s, __ps, __plen);
1145 __s = std::__write(__s, __name, __len);
1146 }
1147 return __s;
1148 }
1149 __io.width(0);
1150 __s = std::__write(__s, __name, __len);
1151 }
1152 return __s;
1153 }
1154
1155 template<typename _CharT, typename _OutIter>
1156 _OutIter
1157 num_put<_CharT, _OutIter>::
1158 do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
1159 { return _M_insert_float(__s, __io, __fill, char(), __v); }
1160
1161#if defined _GLIBCXX_LONG_DOUBLE_COMPAT && defined __LONG_DOUBLE_128__
1162 template<typename _CharT, typename _OutIter>
1163 _OutIter
1164 num_put<_CharT, _OutIter>::
1165 __do_put(iter_type __s, ios_base& __io, char_type __fill, double __v) const
1166 { return _M_insert_float(__s, __io, __fill, char(), __v); }
1167#endif
1168
1169 template<typename _CharT, typename _OutIter>
1170 _OutIter
1171 num_put<_CharT, _OutIter>::
1172 do_put(iter_type __s, ios_base& __io, char_type __fill,
1173 long double __v) const
1174 { return _M_insert_float(__s, __io, __fill, 'L', __v); }
1175
1176 template<typename _CharT, typename _OutIter>
1177 _OutIter
1178 num_put<_CharT, _OutIter>::
1179 do_put(iter_type __s, ios_base& __io, char_type __fill,
1180 const void* __v) const
1181 {
1182 const ios_base::fmtflags __flags = __io.flags();
1183 const ios_base::fmtflags __fmt = ~(ios_base::basefield
1184 | ios_base::uppercase);
1185 __io.flags((__flags & __fmt) | (ios_base::hex | ios_base::showbase));
1186
1187 typedef __gnu_cxx::__conditional_type<(sizeof(const void*)
1188 <= sizeof(unsigned long)),
1189 unsigned long, unsigned long long>::__type _UIntPtrType;
1190
1191 __s = _M_insert_int(__s, __io, __fill,
1192 reinterpret_cast<_UIntPtrType>(__v));
1193 __io.flags(__flags);
1194 return __s;
1195 }
1196
1197_GLIBCXX_END_NAMESPACE_LDBL
1198
1199 // Construct correctly padded string, as per 22.2.2.2.2
1200 // Assumes
1201 // __newlen > __oldlen
1202 // __news is allocated for __newlen size
1203
1204 // NB: Of the two parameters, _CharT can be deduced from the
1205 // function arguments. The other (_Traits) has to be explicitly specified.
1206 template<typename _CharT, typename _Traits>
1207 void
1208 __pad<_CharT, _Traits>::_S_pad(ios_base& __io, _CharT __fill,
1209 _CharT* __news, const _CharT* __olds,
1210 streamsize __newlen, streamsize __oldlen)
1211 {
1212 const size_t __plen = static_cast<size_t>(__newlen - __oldlen);
1213 const ios_base::fmtflags __adjust = __io.flags() & ios_base::adjustfield;
1214
1215 // Padding last.
1216 if (__adjust == ios_base::left)
1217 {
1218 _Traits::copy(__news, __olds, __oldlen);
1219 _Traits::assign(__news + __oldlen, __plen, __fill);
1220 return;
1221 }
1222
1223 size_t __mod = 0;
1224 if (__adjust == ios_base::internal)
1225 {
1226 // Pad after the sign, if there is one.
1227 // Pad after 0[xX], if there is one.
1228 // Who came up with these rules, anyway? Jeeze.
1229 const locale& __loc = __io._M_getloc();
1230 const ctype<_CharT>& __ctype = use_facet<ctype<_CharT> >(__loc);
1231
1232 if (__ctype.widen('-') == __olds[0]
1233 || __ctype.widen('+') == __olds[0])
1234 {
1235 __news[0] = __olds[0];
1236 __mod = 1;
1237 ++__news;
1238 }
1239 else if (__ctype.widen('0') == __olds[0]
1240 && __oldlen > 1
1241 && (__ctype.widen('x') == __olds[1]
1242 || __ctype.widen('X') == __olds[1]))
1243 {
1244 __news[0] = __olds[0];
1245 __news[1] = __olds[1];
1246 __mod = 2;
1247 __news += 2;
1248 }
1249 // else Padding first.
1250 }
1251 _Traits::assign(__news, __plen, __fill);
1252 _Traits::copy(__news + __plen, __olds + __mod, __oldlen - __mod);
1253 }
1254
1255 template<typename _CharT>
1256 _CharT*
1257 __add_grouping(_CharT* __s, _CharT __sep,
1258 const char* __gbeg, size_t __gsize,
1259 const _CharT* __first, const _CharT* __last)
1260 {
1261 size_t __idx = 0;
1262 size_t __ctr = 0;
1263
1264 while (__last - __first > __gbeg[__idx]
1265 && static_cast<signed char>(__gbeg[__idx]) > 0
1266 && __gbeg[__idx] != __gnu_cxx::__numeric_traits<char>::__max)
1267 {
1268 __last -= __gbeg[__idx];
1269 __idx < __gsize - 1 ? ++__idx : ++__ctr;
1270 }
1271
1272 while (__first != __last)
1273 *__s++ = *__first++;
1274
1275 while (__ctr--)
1276 {
1277 *__s++ = __sep;
1278 for (char __i = __gbeg[__idx]; __i > 0; --__i)
1279 *__s++ = *__first++;
1280 }
1281
1282 while (__idx--)
1283 {
1284 *__s++ = __sep;
1285 for (char __i = __gbeg[__idx]; __i > 0; --__i)
1286 *__s++ = *__first++;
1287 }
1288
1289 return __s;
1290 }
1291
1292 // Inhibit implicit instantiations for required instantiations,
1293 // which are defined via explicit instantiations elsewhere.
1294#if _GLIBCXX_EXTERN_TEMPLATE
1295 extern template class _GLIBCXX_NAMESPACE_CXX11 numpunct<char>;
1296 extern template class _GLIBCXX_NAMESPACE_CXX11 numpunct_byname<char>;
1297 extern template class _GLIBCXX_NAMESPACE_LDBL num_get<char>;
1298 extern template class _GLIBCXX_NAMESPACE_LDBL num_put<char>;
1299 extern template class ctype_byname<char>;
1300
1301 extern template
1302 const ctype<char>&
1303 use_facet<ctype<char> >(const locale&);
1304
1305 extern template
1306 const numpunct<char>&
1307 use_facet<numpunct<char> >(const locale&);
1308
1309 extern template
1310 const num_put<char>&
1311 use_facet<num_put<char> >(const locale&);
1312
1313 extern template
1314 const num_get<char>&
1315 use_facet<num_get<char> >(const locale&);
1316
1317 extern template
1318 bool
1319 has_facet<ctype<char> >(const locale&);
1320
1321 extern template
1322 bool
1323 has_facet<numpunct<char> >(const locale&);
1324
1325 extern template
1326 bool
1327 has_facet<num_put<char> >(const locale&);
1328
1329 extern template
1330 bool
1331 has_facet<num_get<char> >(const locale&);
1332
1333#ifdef _GLIBCXX_USE_WCHAR_T
1334 extern template class _GLIBCXX_NAMESPACE_CXX11 numpunct<wchar_t>;
1335 extern template class _GLIBCXX_NAMESPACE_CXX11 numpunct_byname<wchar_t>;
1336 extern template class _GLIBCXX_NAMESPACE_LDBL num_get<wchar_t>;
1337 extern template class _GLIBCXX_NAMESPACE_LDBL num_put<wchar_t>;
1338 extern template class ctype_byname<wchar_t>;
1339
1340 extern template
1341 const ctype<wchar_t>&
1342 use_facet<ctype<wchar_t> >(const locale&);
1343
1344 extern template
1345 const numpunct<wchar_t>&
1346 use_facet<numpunct<wchar_t> >(const locale&);
1347
1348 extern template
1349 const num_put<wchar_t>&
1350 use_facet<num_put<wchar_t> >(const locale&);
1351
1352 extern template
1353 const num_get<wchar_t>&
1354 use_facet<num_get<wchar_t> >(const locale&);
1355
1356 extern template
1357 bool
1358 has_facet<ctype<wchar_t> >(const locale&);
1359
1360 extern template
1361 bool
1362 has_facet<numpunct<wchar_t> >(const locale&);
1363
1364 extern template
1365 bool
1366 has_facet<num_put<wchar_t> >(const locale&);
1367
1368 extern template
1369 bool
1370 has_facet<num_get<wchar_t> >(const locale&);
1371#endif
1372#endif
1373
1374_GLIBCXX_END_NAMESPACE_VERSION
1375} // namespace
1376
1377#endif
1378