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1 | // (C) Copyright Howard Hinnant |
2 | // (C) Copyright 2011 Vicente J. Botet Escriba | |
3 | // Use, modification and distribution are subject to the Boost Software License, | |
4 | // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
5 | // http://www.boost.org/LICENSE_1_0.txt). | |
6 | // | |
7 | ||
8 | #ifndef BOOST_CHRONO_IO_DURATION_UNITS_HPP | |
9 | #define BOOST_CHRONO_IO_DURATION_UNITS_HPP | |
10 | ||
11 | #include <boost/chrono/config.hpp> | |
12 | #include <boost/ratio/ratio_io.hpp> | |
13 | #include <boost/chrono/duration.hpp> | |
14 | #include <boost/chrono/io/duration_style.hpp> | |
15 | #include <boost/chrono/io/ios_base_state.hpp> | |
16 | #include <boost/assert.hpp> | |
17 | #include <string> | |
18 | #include <ios> | |
19 | #include <locale> | |
20 | #include <algorithm> | |
21 | ||
22 | namespace boost | |
23 | { | |
24 | namespace chrono | |
25 | { | |
26 | class rt_ratio | |
27 | { | |
28 | public: | |
29 | template <typename Period> | |
30 | rt_ratio(Period const&) : | |
31 | num(Period::type::num), den(Period::type::den) | |
32 | { | |
33 | } | |
34 | ||
35 | rt_ratio(intmax_t n = 0, intmax_t d = 0) : | |
36 | num(n), den(d) | |
37 | { | |
38 | } | |
39 | ||
40 | intmax_t num; | |
41 | intmax_t den; | |
42 | }; | |
43 | ||
44 | /** | |
45 | * @c duration_units facet gives useful information about the duration units, | |
46 | * as the number of plural forms, the plural form associated to a duration, | |
47 | * the text associated to a plural form and a duration's period, | |
48 | */ | |
49 | template <typename CharT = char> | |
50 | class duration_units: public std::locale::facet | |
51 | { | |
52 | public: | |
53 | /** | |
54 | * Type of character the facet is instantiated on. | |
55 | */ | |
56 | typedef CharT char_type; | |
57 | /** | |
58 | * Type of character string passed to member functions. | |
59 | */ | |
60 | typedef std::basic_string<CharT> string_type; | |
61 | ||
62 | /** | |
63 | * Unique identifier for this type of facet. | |
64 | */ | |
65 | static std::locale::id id; | |
66 | ||
67 | /** | |
68 | * Construct a @c duration_units facet. | |
69 | * @param refs | |
70 | * @Effects Construct a @c duration_units facet. | |
71 | * If the @c refs argument is @c 0 then destruction of the object is | |
72 | * delegated to the @c locale, or locales, containing it. This allows | |
73 | * the user to ignore lifetime management issues. On the other had, | |
74 | * if @c refs is @c 1 then the object must be explicitly deleted; | |
75 | * the @c locale will not do so. In this case, the object can be | |
76 | * maintained across the lifetime of multiple locales. | |
77 | */ | |
78 | explicit duration_units(size_t refs = 0) : | |
79 | std::locale::facet(refs) | |
80 | { | |
81 | } | |
82 | ||
83 | /** | |
84 | * @return pointer to the start of valid [N/D] units. | |
85 | */ | |
86 | virtual const string_type* get_n_d_valid_units_start() const =0; | |
87 | /** | |
88 | * @effect calls the do_... | |
89 | * @return pointer to the end of valid [N/D] units. | |
90 | */ | |
91 | virtual const string_type* get_n_d_valid_units_end() const=0; | |
92 | ||
93 | /** | |
94 | * @return pointer to the start of valid units, symbol or prefix with its different plural forms. | |
95 | */ | |
96 | virtual const string_type* get_valid_units_start() const=0; | |
97 | /** | |
98 | * @return pointer to the end of valid units. | |
99 | */ | |
100 | virtual const string_type* get_valid_units_end() const=0; | |
101 | ||
102 | /** | |
103 | * @param k the found pointer to the [N/D] unit. | |
104 | * @return true if @c k matches a valid unit. | |
105 | */ | |
106 | virtual bool match_n_d_valid_unit(const string_type* k) const = 0; | |
107 | /** | |
108 | * @param k the found pointer to the unit. | |
109 | * @Effects @c rt is set to the valid Period when the @c k matches a valid unit. | |
110 | * @return true if @c k matches a valid unit. | |
111 | */ | |
112 | virtual bool match_valid_unit(const string_type* k, rt_ratio& rt) const = 0; | |
113 | ||
114 | /** | |
115 | * @effect calls the do_... | |
116 | * @return the pattern to be used by default. | |
117 | */ | |
118 | virtual string_type get_pattern() const=0; | |
119 | ||
120 | /** | |
121 | * @effect calls the do_... | |
122 | * @return the unit associated to this duration. | |
123 | */ | |
124 | template <typename Rep, typename Period> | |
125 | string_type get_unit(duration_style style, duration<Rep, Period> const& d) const | |
126 | { | |
127 | return do_get_unit(style, rt_ratio(Period()), static_cast<intmax_t>(d.count())); | |
128 | } | |
129 | /** | |
130 | * @effect calls the do_... | |
131 | * @return the [N/D] suffix unit associated to this duration. | |
132 | */ | |
133 | template <typename Rep, typename Period> | |
134 | string_type get_n_d_unit(duration_style style, duration<Rep, Period> const& d) const | |
135 | { | |
136 | return do_get_n_d_unit(style, rt_ratio(Period()), static_cast<intmax_t>(d.count())); | |
137 | } | |
138 | ||
139 | /** | |
140 | * @effect calls the do_... | |
141 | * @return true if the unit associated to the given Period is named, false otherwise. | |
142 | */ | |
143 | template <typename Period> | |
144 | bool is_named_unit() const | |
145 | { | |
146 | return do_is_named_unit(rt_ratio(Period())); | |
147 | } | |
148 | ||
149 | ||
150 | protected: | |
151 | ||
152 | /** | |
153 | * @Effects Destroys the facet | |
154 | */ | |
155 | virtual ~duration_units() | |
156 | { | |
157 | } | |
158 | /** | |
159 | * @return the [N/D] suffix unit associated to this duration. | |
160 | */ | |
161 | virtual string_type do_get_n_d_unit(duration_style style, rt_ratio rt, intmax_t v) const = 0; | |
162 | /** | |
163 | * @return the unit associated to this duration. | |
164 | */ | |
165 | virtual string_type do_get_unit(duration_style style,rt_ratio rt, intmax_t v) const = 0; | |
166 | /** | |
167 | * @return true if the unit associated to the given Period is named, false otherwise. | |
168 | */ | |
169 | virtual bool do_is_named_unit(rt_ratio rt) const =0; | |
170 | ||
171 | }; | |
172 | ||
173 | template <typename CharT> | |
174 | std::locale::id duration_units<CharT>::id; | |
175 | ||
176 | namespace detail | |
177 | { | |
178 | template<typename CharT> | |
179 | struct duration_units_default_holder | |
180 | { | |
181 | typedef std::basic_string<CharT> string_type; | |
182 | static string_type* n_d_valid_units_; | |
183 | static string_type* valid_units_; | |
184 | static bool initialized_; | |
185 | }; | |
186 | template <typename CharT> | |
187 | typename duration_units_default_holder<CharT>::string_type* duration_units_default_holder<CharT>::n_d_valid_units_=0; | |
188 | template <typename CharT> | |
189 | typename duration_units_default_holder<CharT>::string_type* duration_units_default_holder<CharT>::valid_units_=0; | |
190 | template<typename CharT> | |
191 | bool duration_units_default_holder<CharT>::initialized_ = false; | |
192 | } | |
193 | ||
194 | /** | |
195 | * This class is used to define the strings for the default English | |
196 | */ | |
197 | template <typename CharT = char> | |
198 | class duration_units_default: public duration_units<CharT> | |
199 | { | |
200 | protected: | |
201 | static const std::size_t pfs_ = 2; | |
202 | ||
203 | public: | |
204 | /** | |
205 | * Type of character the facet is instantiated on. | |
206 | */ | |
207 | typedef CharT char_type; | |
208 | /** | |
209 | * Type of character string passed to member functions. | |
210 | */ | |
211 | typedef std::basic_string<CharT> string_type; | |
212 | ||
213 | /** | |
214 | * Construct a @c duration_units_default facet. | |
215 | * @param refs | |
216 | * @Effects Construct a @c duration_units_default facet. | |
217 | * If the @c refs argument is @c 0 then destruction of the object is | |
218 | * delegated to the @c locale, or locales, containing it. This allows | |
219 | * the user to ignore lifetime management issues. On the other had, | |
220 | * if @c refs is @c 1 then the object must be explicitly deleted; | |
221 | * the @c locale will not do so. In this case, the object can be | |
222 | * maintained across the lifetime of multiple locales. | |
223 | */ | |
224 | explicit duration_units_default(size_t refs = 0) : | |
225 | duration_units<CharT> (refs) | |
226 | { | |
227 | } | |
228 | ||
229 | /** | |
230 | * Destroys the facet. | |
231 | */ | |
232 | ~duration_units_default() | |
233 | { | |
234 | } | |
235 | ||
236 | public: | |
237 | ||
238 | /** | |
239 | * @param k the found pointer to the [N/D] unit. | |
240 | * @return true if @c k matches a valid unit. | |
241 | */ | |
242 | bool match_n_d_valid_unit(const string_type* k) const | |
243 | { | |
244 | std::size_t index = (k - get_n_d_valid_units_start()) / (pfs_ + 1); | |
245 | switch (index) | |
246 | { | |
247 | case 0: | |
248 | break; | |
249 | default: | |
250 | return false; | |
251 | } | |
252 | return true; | |
253 | } | |
254 | /** | |
255 | * @param k the found pointer to the unit. | |
256 | * @Effects @c rt is set to the valid Period when the @c k matches a valid unit. | |
257 | * @return true if @c k matches a valid unit. | |
258 | */ | |
259 | bool match_valid_unit(const string_type* k, rt_ratio& rt) const | |
260 | { | |
261 | std::size_t index = (k - get_valid_units_start()) / (pfs_ + 1); | |
262 | switch (index) | |
263 | { | |
264 | case 0: | |
265 | rt = rt_ratio(atto()); | |
266 | break; | |
267 | case 1: | |
268 | rt = rt_ratio(femto()); | |
269 | break; | |
270 | case 2: | |
271 | rt = rt_ratio(pico()); | |
272 | break; | |
273 | case 3: | |
274 | rt = rt_ratio(nano()); | |
275 | break; | |
276 | case 4: | |
277 | rt = rt_ratio(micro()); | |
278 | break; | |
279 | case 5: | |
280 | rt = rt_ratio(milli()); | |
281 | break; | |
282 | case 6: | |
283 | rt = rt_ratio(centi()); | |
284 | break; | |
285 | case 7: | |
286 | rt = rt_ratio(deci()); | |
287 | break; | |
288 | case 8: | |
289 | rt = rt_ratio(deca()); | |
290 | break; | |
291 | case 9: | |
292 | rt = rt_ratio(hecto()); | |
293 | break; | |
294 | case 10: | |
295 | rt = rt_ratio(kilo()); | |
296 | break; | |
297 | case 11: | |
298 | rt = rt_ratio(mega()); | |
299 | break; | |
300 | case 12: | |
301 | rt = rt_ratio(giga()); | |
302 | break; | |
303 | case 13: | |
304 | rt = rt_ratio(tera()); | |
305 | break; | |
306 | case 14: | |
307 | rt = rt_ratio(peta()); | |
308 | break; | |
309 | case 15: | |
310 | rt = rt_ratio(exa()); | |
311 | break; | |
312 | case 16: | |
313 | rt = rt_ratio(ratio<1> ()); | |
314 | break; | |
315 | case 17: | |
316 | rt = rt_ratio(ratio<60> ()); | |
317 | break; | |
318 | case 18: | |
319 | rt = rt_ratio(ratio<3600> ()); | |
320 | break; | |
321 | default: | |
322 | return false; | |
323 | } | |
324 | return true; | |
325 | } | |
326 | ||
327 | /** | |
328 | * @return pointer to the start of valid [N/D] units. | |
329 | */ | |
330 | virtual const string_type* get_n_d_valid_units_start()const | |
331 | { | |
332 | return detail::duration_units_default_holder<CharT>::n_d_valid_units_; | |
333 | } | |
334 | /** | |
335 | * @return pointer to the end of valid [N/D] units. | |
336 | */ | |
337 | virtual const string_type* get_n_d_valid_units_end()const | |
338 | { | |
339 | return detail::duration_units_default_holder<CharT>::n_d_valid_units_ + (pfs_ + 1); | |
340 | } | |
341 | ||
342 | /** | |
343 | * @return pointer to the start of valid units. | |
344 | */ | |
345 | virtual const string_type* get_valid_units_start() const | |
346 | { | |
347 | return detail::duration_units_default_holder<CharT>::valid_units_; | |
348 | } | |
349 | /** | |
350 | * @return pointer to the end of valid units. | |
351 | */ | |
352 | virtual const string_type* get_valid_units_end() const | |
353 | { | |
354 | return detail::duration_units_default_holder<CharT>::valid_units_ + 19 * (pfs_ + 1); | |
355 | } | |
356 | ||
357 | string_type get_pattern() const | |
358 | { | |
359 | static const CharT t[] = | |
360 | { '%', 'v', ' ', '%', 'u' }; | |
361 | static const string_type pattern(t, t + sizeof (t) / sizeof (t[0])); | |
362 | ||
363 | return pattern; | |
364 | } | |
365 | ||
366 | protected: | |
367 | /** | |
368 | * | |
369 | * This facet names the units associated to the following periods: | |
370 | * atto,femto,pico,nano,micro,milli,centi,deci,ratio<1>,deca,hecto,kilo,mega,giga,tera,peta,exa,ratio<60> and ratio<3600>. | |
371 | * @return true if the unit associated to the given Period is named, false otherwise. | |
372 | */ | |
373 | bool do_is_named_unit(rt_ratio rt) const | |
374 | { | |
375 | if (rt.num==1) { | |
376 | switch (rt.den) | |
377 | { | |
378 | case BOOST_RATIO_INTMAX_C(1): | |
379 | case BOOST_RATIO_INTMAX_C(10): | |
380 | case BOOST_RATIO_INTMAX_C(100): | |
381 | case BOOST_RATIO_INTMAX_C(1000): | |
382 | case BOOST_RATIO_INTMAX_C(1000000): | |
383 | case BOOST_RATIO_INTMAX_C(1000000000): | |
384 | case BOOST_RATIO_INTMAX_C(1000000000000): | |
385 | case BOOST_RATIO_INTMAX_C(1000000000000000): | |
386 | case BOOST_RATIO_INTMAX_C(1000000000000000000): | |
387 | return true; | |
388 | default: | |
389 | return false; | |
390 | } | |
391 | } else if (rt.den==1) { | |
392 | switch (rt.num) | |
393 | { | |
394 | case BOOST_RATIO_INTMAX_C(10): | |
395 | case BOOST_RATIO_INTMAX_C(60): | |
396 | case BOOST_RATIO_INTMAX_C(100): | |
397 | case BOOST_RATIO_INTMAX_C(1000): | |
398 | case BOOST_RATIO_INTMAX_C(3600): | |
399 | case BOOST_RATIO_INTMAX_C(1000000): | |
400 | case BOOST_RATIO_INTMAX_C(1000000000): | |
401 | case BOOST_RATIO_INTMAX_C(1000000000000): | |
402 | case BOOST_RATIO_INTMAX_C(1000000000000000): | |
403 | case BOOST_RATIO_INTMAX_C(1000000000000000000): | |
404 | return true; | |
405 | default: | |
406 | return false; | |
407 | } | |
408 | } | |
409 | return false; | |
410 | ||
411 | } | |
412 | ||
413 | /** | |
414 | * In English the suffix used after [N/D] is the one associated to the period ratio<1>. | |
415 | * @return the [N/D] suffix unit associated to this duration. | |
416 | */ | |
417 | string_type do_get_n_d_unit(duration_style style, rt_ratio, intmax_t v) const | |
418 | { | |
419 | return do_get_unit(style, ratio<1>(), do_get_plural_form(v)); | |
420 | } | |
421 | ||
422 | /** | |
423 | * @return the unit associated to this duration if it is named, "" otherwise. | |
424 | */ | |
425 | string_type do_get_unit(duration_style style, rt_ratio rt, intmax_t v) const | |
426 | { | |
427 | if (rt.num==1) { | |
428 | switch (rt.den) | |
429 | { | |
430 | case BOOST_RATIO_INTMAX_C(1): | |
431 | return do_get_unit(style, ratio<1>(), do_get_plural_form(v)); | |
432 | case BOOST_RATIO_INTMAX_C(10): | |
433 | return do_get_unit(style, deci(), do_get_plural_form(v)); | |
434 | case BOOST_RATIO_INTMAX_C(100): | |
435 | return do_get_unit(style, centi(), do_get_plural_form(v)); | |
436 | case BOOST_RATIO_INTMAX_C(1000): | |
437 | return do_get_unit(style, milli(), do_get_plural_form(v)); | |
438 | case BOOST_RATIO_INTMAX_C(1000000): | |
439 | return do_get_unit(style, micro(), do_get_plural_form(v)); | |
440 | case BOOST_RATIO_INTMAX_C(1000000000): | |
441 | return do_get_unit(style, nano(), do_get_plural_form(v)); | |
442 | case BOOST_RATIO_INTMAX_C(1000000000000): | |
443 | return do_get_unit(style, pico(), do_get_plural_form(v)); | |
444 | case BOOST_RATIO_INTMAX_C(1000000000000000): | |
445 | return do_get_unit(style, femto(), do_get_plural_form(v)); | |
446 | case BOOST_RATIO_INTMAX_C(1000000000000000000): | |
447 | return do_get_unit(style, atto(), do_get_plural_form(v)); | |
448 | default: | |
449 | ; | |
450 | } | |
451 | } else if (rt.den==1) { | |
452 | switch (rt.num) | |
453 | { | |
454 | case BOOST_RATIO_INTMAX_C(10): | |
455 | return do_get_unit(style, deca(), do_get_plural_form(v)); | |
456 | case BOOST_RATIO_INTMAX_C(60): | |
457 | return do_get_unit(style, ratio<60>(), do_get_plural_form(v)); | |
458 | case BOOST_RATIO_INTMAX_C(100): | |
459 | return do_get_unit(style, hecto(), do_get_plural_form(v)); | |
460 | case BOOST_RATIO_INTMAX_C(1000): | |
461 | return do_get_unit(style, kilo(), do_get_plural_form(v)); | |
462 | case BOOST_RATIO_INTMAX_C(3600): | |
463 | return do_get_unit(style, ratio<3600>(), do_get_plural_form(v)); | |
464 | case BOOST_RATIO_INTMAX_C(1000000): | |
465 | return do_get_unit(style, mega(), do_get_plural_form(v)); | |
466 | case BOOST_RATIO_INTMAX_C(1000000000): | |
467 | return do_get_unit(style, giga(), do_get_plural_form(v)); | |
468 | case BOOST_RATIO_INTMAX_C(1000000000000): | |
469 | return do_get_unit(style, tera(), do_get_plural_form(v)); | |
470 | case BOOST_RATIO_INTMAX_C(1000000000000000): | |
471 | return do_get_unit(style, peta(), do_get_plural_form(v)); | |
472 | case BOOST_RATIO_INTMAX_C(1000000000000000000): | |
473 | return do_get_unit(style, exa(), do_get_plural_form(v)); | |
474 | default: | |
475 | ; | |
476 | } | |
477 | } | |
478 | BOOST_ASSERT(false&&"ratio parameter can not be translated"); | |
479 | //throw "exception"; | |
480 | return string_type(); | |
481 | } | |
482 | ||
483 | protected: | |
484 | /** | |
485 | * @return the number of associated plural forms this facet manages. | |
486 | */ | |
487 | virtual std::size_t do_get_plural_forms() const | |
488 | { | |
489 | return static_get_plural_forms(); | |
490 | } | |
491 | static std::size_t static_get_plural_forms() | |
492 | { | |
493 | return pfs_; | |
494 | } | |
495 | /** | |
496 | * Gets the associated plural form. | |
497 | * @param value the duration representation | |
498 | * @return the plural form associated to the @c value parameter. In English there are 2 plural forms | |
499 | * 0 singular (-1 or 1) | |
500 | * 1 plural for all others | |
501 | */ | |
502 | virtual std::size_t do_get_plural_form(int_least64_t value) const | |
503 | { | |
504 | return static_get_plural_form(value); | |
505 | } | |
506 | static std::size_t static_get_plural_form(int_least64_t value) | |
507 | { | |
508 | return (value == -1 || value == 1) ? 0 : 1; | |
509 | } | |
510 | ||
511 | /** | |
512 | * @param style the duration style. | |
513 | * @param period the period associated to the duration seconds. | |
514 | * @param pf the requested plural form. | |
515 | * @return if style is symbol returns "s", otherwise if pf is 0 return "second", if pf is 1 "seconds" | |
516 | */ | |
517 | virtual string_type do_get_unit(duration_style style, ratio<1> u, std::size_t pf) const | |
518 | { | |
519 | return static_get_unit(style,u,pf); | |
520 | } | |
521 | static string_type static_get_unit(duration_style style, ratio<1> , std::size_t pf) | |
522 | { | |
523 | static const CharT t[] = | |
524 | { 's' }; | |
525 | static const string_type symbol(t, t + sizeof (t) / sizeof (t[0])); | |
526 | static const CharT u[] = | |
527 | { 's', 'e', 'c', 'o', 'n', 'd' }; | |
528 | static const string_type singular(u, u + sizeof (u) / sizeof (u[0])); | |
529 | static const CharT v[] = | |
530 | { 's', 'e', 'c', 'o', 'n', 'd', 's' }; | |
531 | static const string_type plural(v, v + sizeof (v) / sizeof (v[0])); | |
532 | ||
533 | if (style == duration_style::symbol) | |
534 | { | |
535 | return symbol; | |
536 | } | |
537 | if (pf == 0) | |
538 | { | |
539 | return singular; | |
540 | } | |
541 | if (pf == 1) | |
542 | { | |
543 | return plural; | |
544 | } | |
545 | BOOST_ASSERT(false&&"style/pf parameters not valid"); | |
546 | //throw "exception"; | |
547 | return string_type(); | |
548 | } | |
549 | ||
550 | /** | |
551 | * @param style the duration style. | |
552 | * @param period the period associated to the duration minutes. | |
553 | * @param pf the requested plural form. | |
554 | * @return if style is symbol returns "min", otherwise if pf is 0 return "minute", if pf is 1 "minutes" | |
555 | */ | |
556 | virtual string_type do_get_unit(duration_style style, ratio<60> u, std::size_t pf) const | |
557 | { | |
558 | return static_get_unit(style,u,pf); | |
559 | } | |
560 | static string_type static_get_unit(duration_style style, ratio<60> , std::size_t pf) | |
561 | { | |
562 | static const CharT t[] = | |
563 | { 'm', 'i', 'n' }; | |
564 | static const string_type symbol(t, t + sizeof (t) / sizeof (t[0])); | |
565 | ||
566 | static const CharT u[] = | |
567 | { 'm', 'i', 'n', 'u', 't', 'e' }; | |
568 | static const string_type singular(u, u + sizeof (u) / sizeof (u[0])); | |
569 | static const CharT v[] = | |
570 | { 'm', 'i', 'n', 'u', 't', 'e', 's' }; | |
571 | static const string_type plural(v, v + sizeof (v) / sizeof (v[0])); | |
572 | ||
573 | if (style == duration_style::symbol) return symbol; | |
574 | if (pf == 0) return singular; | |
575 | if (pf == 1) return plural; | |
576 | BOOST_ASSERT(false&&"style/pf parameters not valid"); | |
577 | //throw "exception"; | |
578 | return string_type(); | |
579 | ||
580 | } | |
581 | ||
582 | /** | |
583 | * @param style the duration style. | |
584 | * @param period the period associated to the duration hours. | |
585 | * @param pf the requested plural form. | |
586 | * @return if style is symbol returns "h", otherwise if pf is 0 return "hour", if pf is 1 "hours" | |
587 | */ | |
588 | virtual string_type do_get_unit(duration_style style, ratio<3600> u, std::size_t pf) const | |
589 | { | |
590 | return static_get_unit(style,u,pf); | |
591 | } | |
592 | static string_type static_get_unit(duration_style style, ratio<3600> , std::size_t pf) | |
593 | { | |
594 | static const CharT t[] = | |
595 | { 'h' }; | |
596 | static const string_type symbol(t, t + sizeof (t) / sizeof (t[0])); | |
597 | static const CharT u[] = | |
598 | { 'h', 'o', 'u', 'r' }; | |
599 | static const string_type singular(u, u + sizeof (u) / sizeof (u[0])); | |
600 | static const CharT v[] = | |
601 | { 'h', 'o', 'u', 'r', 's' }; | |
602 | static const string_type plural(v, v + sizeof (v) / sizeof (v[0])); | |
603 | ||
604 | if (style == duration_style::symbol) return symbol; | |
605 | if (pf == 0) return singular; | |
606 | if (pf == 1) return plural; | |
607 | BOOST_ASSERT(false&&"style/pf parameters not valid"); | |
608 | //throw "exception"; | |
609 | return string_type(); | |
610 | ||
611 | } | |
612 | /** | |
613 | * @param style the duration style. | |
614 | * @param u the period tag atto. | |
615 | * @param pf the requested plural form. | |
616 | * @return the concatenation of the prefix associated to @c period + the one associated to seconds. | |
617 | */ | |
618 | virtual string_type do_get_unit(duration_style style, atto u, std::size_t pf) const | |
619 | { | |
620 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
621 | } | |
622 | static string_type static_get_unit(duration_style style, atto u, std::size_t pf) | |
623 | { | |
624 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
625 | } | |
626 | /** | |
627 | * @param style the duration style. | |
628 | * @param u the period tag femto. | |
629 | * @param pf the requested plural form. | |
630 | * @return the concatenation of the prefix associated to period @c u + the one associated to seconds. | |
631 | */ | |
632 | virtual string_type do_get_unit(duration_style style, femto u, std::size_t pf) const | |
633 | { | |
634 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
635 | } | |
636 | static string_type static_get_unit(duration_style style, femto u, std::size_t pf) | |
637 | { | |
638 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
639 | } | |
640 | /** | |
641 | * @param style the duration style. | |
642 | * @param u the period tag femto. | |
643 | * @param pf the requested plural form. | |
644 | * @return the concatenation of the prefix associated to period @c u + the one associated to seconds. | |
645 | */ | |
646 | virtual string_type do_get_unit(duration_style style, pico u, std::size_t pf) const | |
647 | { | |
648 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
649 | } | |
650 | static string_type static_get_unit(duration_style style, pico u, std::size_t pf) | |
651 | { | |
652 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
653 | } | |
654 | virtual string_type do_get_unit(duration_style style, nano u, std::size_t pf) const | |
655 | { | |
656 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
657 | } | |
658 | static string_type static_get_unit(duration_style style, nano u, std::size_t pf) | |
659 | { | |
660 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
661 | } | |
662 | virtual string_type do_get_unit(duration_style style, micro u, std::size_t pf) const | |
663 | { | |
664 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
665 | } | |
666 | static string_type static_get_unit(duration_style style, micro u, std::size_t pf) | |
667 | { | |
668 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
669 | } | |
670 | virtual string_type do_get_unit(duration_style style, milli u, std::size_t pf) const | |
671 | { | |
672 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
673 | } | |
674 | static string_type static_get_unit(duration_style style, milli u, std::size_t pf) | |
675 | { | |
676 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
677 | } | |
678 | virtual string_type do_get_unit(duration_style style, centi u, std::size_t pf) const | |
679 | { | |
680 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
681 | } | |
682 | static string_type static_get_unit(duration_style style, centi u, std::size_t pf) | |
683 | { | |
684 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
685 | } | |
686 | virtual string_type do_get_unit(duration_style style, deci u, std::size_t pf) const | |
687 | { | |
688 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
689 | } | |
690 | static string_type static_get_unit(duration_style style, deci u, std::size_t pf) | |
691 | { | |
692 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
693 | } | |
694 | virtual string_type do_get_unit(duration_style style, deca u, std::size_t pf) const | |
695 | { | |
696 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
697 | } | |
698 | static string_type static_get_unit(duration_style style, deca u, std::size_t pf) | |
699 | { | |
700 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
701 | } | |
702 | virtual string_type do_get_unit(duration_style style, hecto u, std::size_t pf) const | |
703 | { | |
704 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
705 | } | |
706 | static string_type static_get_unit(duration_style style, hecto u, std::size_t pf) | |
707 | { | |
708 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
709 | } | |
710 | virtual string_type do_get_unit(duration_style style, kilo u, std::size_t pf) const | |
711 | { | |
712 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
713 | } | |
714 | static string_type static_get_unit(duration_style style, kilo u, std::size_t pf) | |
715 | { | |
716 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
717 | } | |
718 | virtual string_type do_get_unit(duration_style style, mega u, std::size_t pf) const | |
719 | { | |
720 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
721 | } | |
722 | static string_type static_get_unit(duration_style style, mega u, std::size_t pf) | |
723 | { | |
724 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
725 | } | |
726 | virtual string_type do_get_unit(duration_style style, giga u, std::size_t pf) const | |
727 | { | |
728 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
729 | } | |
730 | static string_type static_get_unit(duration_style style, giga u, std::size_t pf) | |
731 | { | |
732 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
733 | } | |
734 | virtual string_type do_get_unit(duration_style style, tera u, std::size_t pf) const | |
735 | { | |
736 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
737 | } | |
738 | static string_type static_get_unit(duration_style style, tera u, std::size_t pf) | |
739 | { | |
740 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
741 | } | |
742 | virtual string_type do_get_unit(duration_style style, peta u, std::size_t pf) const | |
743 | { | |
744 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
745 | } | |
746 | static string_type static_get_unit(duration_style style, peta u, std::size_t pf) | |
747 | { | |
748 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
749 | } | |
750 | virtual string_type do_get_unit(duration_style style, exa u, std::size_t pf) const | |
751 | { | |
752 | return do_get_ratio_prefix(style, u) + do_get_unit(style, ratio<1> (), pf); | |
753 | } | |
754 | static string_type static_get_unit(duration_style style, exa u, std::size_t pf) | |
755 | { | |
756 | return static_get_ratio_prefix(style, u) + static_get_unit(style, ratio<1> (), pf); | |
757 | } | |
758 | ||
759 | protected: | |
760 | ||
761 | /** | |
762 | * @param style the duration style. | |
763 | * @param u the period tag atto. | |
764 | * @return depending on the value of @c style return the ratio_string symbol or prefix. | |
765 | */ | |
766 | virtual string_type do_get_ratio_prefix(duration_style style, atto u) const | |
767 | { | |
768 | return static_get_ratio_prefix(style, u); | |
769 | } | |
770 | static string_type static_get_ratio_prefix(duration_style style, atto) | |
771 | { | |
772 | if (style == duration_style::symbol) return ratio_string<atto, CharT>::symbol(); | |
773 | return ratio_string<atto, CharT>::prefix(); | |
774 | } | |
775 | virtual string_type do_get_ratio_prefix(duration_style style, femto u) const | |
776 | { | |
777 | return static_get_ratio_prefix(style, u); | |
778 | } | |
779 | static string_type static_get_ratio_prefix(duration_style style, femto) | |
780 | { | |
781 | if (style == duration_style::symbol) return ratio_string<femto, CharT>::symbol(); | |
782 | return ratio_string<femto, CharT>::prefix(); | |
783 | } | |
784 | virtual string_type do_get_ratio_prefix(duration_style style, pico u) const | |
785 | { | |
786 | return static_get_ratio_prefix(style, u); | |
787 | } | |
788 | static string_type static_get_ratio_prefix(duration_style style, pico) | |
789 | { | |
790 | if (style == duration_style::symbol) return ratio_string<pico, CharT>::symbol(); | |
791 | return ratio_string<pico, CharT>::prefix(); | |
792 | } | |
793 | virtual string_type do_get_ratio_prefix(duration_style style, nano u) const | |
794 | { | |
795 | return static_get_ratio_prefix(style, u); | |
796 | } | |
797 | static string_type static_get_ratio_prefix(duration_style style, nano) | |
798 | { | |
799 | if (style == duration_style::symbol) return ratio_string<nano, CharT>::symbol(); | |
800 | return ratio_string<nano, CharT>::prefix(); | |
801 | } | |
802 | virtual string_type do_get_ratio_prefix(duration_style style, micro u) const | |
803 | { | |
804 | return static_get_ratio_prefix(style, u); | |
805 | } | |
806 | static string_type static_get_ratio_prefix(duration_style style, micro) | |
807 | { | |
808 | if (style == duration_style::symbol) return ratio_string<micro, CharT>::symbol(); | |
809 | return ratio_string<micro, CharT>::prefix(); | |
810 | } | |
811 | virtual string_type do_get_ratio_prefix(duration_style style, milli u) const | |
812 | { | |
813 | return static_get_ratio_prefix(style, u); | |
814 | } | |
815 | static string_type static_get_ratio_prefix(duration_style style, milli) | |
816 | { | |
817 | if (style == duration_style::symbol) return ratio_string<milli, CharT>::symbol(); | |
818 | return ratio_string<milli, CharT>::prefix(); | |
819 | } | |
820 | virtual string_type do_get_ratio_prefix(duration_style style, centi u) const | |
821 | { | |
822 | return static_get_ratio_prefix(style, u); | |
823 | } | |
824 | static string_type static_get_ratio_prefix(duration_style style, centi) | |
825 | { | |
826 | if (style == duration_style::symbol) return ratio_string<centi, CharT>::symbol(); | |
827 | return ratio_string<centi, CharT>::prefix(); | |
828 | } | |
829 | virtual string_type do_get_ratio_prefix(duration_style style, deci u) const | |
830 | { | |
831 | return static_get_ratio_prefix(style, u); | |
832 | } | |
833 | static string_type static_get_ratio_prefix(duration_style style, deci) | |
834 | { | |
835 | if (style == duration_style::symbol) return ratio_string<deci, CharT>::symbol(); | |
836 | return ratio_string<deci, CharT>::prefix(); | |
837 | } | |
838 | virtual string_type do_get_ratio_prefix(duration_style style, deca u) const | |
839 | { | |
840 | return static_get_ratio_prefix(style, u); | |
841 | } | |
842 | static string_type static_get_ratio_prefix(duration_style style, deca) | |
843 | { | |
844 | if (style == duration_style::symbol) return ratio_string<deca, CharT>::symbol(); | |
845 | return ratio_string<deca, CharT>::prefix(); | |
846 | } | |
847 | virtual string_type do_get_ratio_prefix(duration_style style, hecto u) const | |
848 | { | |
849 | return static_get_ratio_prefix(style, u); | |
850 | } | |
851 | static string_type static_get_ratio_prefix(duration_style style, hecto) | |
852 | { | |
853 | if (style == duration_style::symbol) return ratio_string<hecto, CharT>::symbol(); | |
854 | return ratio_string<hecto, CharT>::prefix(); | |
855 | } | |
856 | virtual string_type do_get_ratio_prefix(duration_style style, kilo u) const | |
857 | { | |
858 | return static_get_ratio_prefix(style, u); | |
859 | } | |
860 | static string_type static_get_ratio_prefix(duration_style style, kilo) | |
861 | { | |
862 | if (style == duration_style::symbol) return ratio_string<kilo, CharT>::symbol(); | |
863 | return ratio_string<kilo, CharT>::prefix(); | |
864 | } | |
865 | virtual string_type do_get_ratio_prefix(duration_style style, mega u) const | |
866 | { | |
867 | return static_get_ratio_prefix(style, u); | |
868 | } | |
869 | static string_type static_get_ratio_prefix(duration_style style, mega) | |
870 | { | |
871 | if (style == duration_style::symbol) return ratio_string<mega, CharT>::symbol(); | |
872 | return ratio_string<mega, CharT>::prefix(); | |
873 | } | |
874 | virtual string_type do_get_ratio_prefix(duration_style style, giga u) const | |
875 | { | |
876 | return static_get_ratio_prefix(style, u); | |
877 | } | |
878 | static string_type static_get_ratio_prefix(duration_style style, giga) | |
879 | { | |
880 | if (style == duration_style::symbol) return ratio_string<giga, CharT>::symbol(); | |
881 | return ratio_string<giga, CharT>::prefix(); | |
882 | } | |
883 | virtual string_type do_get_ratio_prefix(duration_style style, tera u) const | |
884 | { | |
885 | return static_get_ratio_prefix(style, u); | |
886 | } | |
887 | static string_type static_get_ratio_prefix(duration_style style, tera) | |
888 | { | |
889 | if (style == duration_style::symbol) return ratio_string<tera, CharT>::symbol(); | |
890 | return ratio_string<tera, CharT>::prefix(); | |
891 | } | |
892 | virtual string_type do_get_ratio_prefix(duration_style style, peta u) const | |
893 | { | |
894 | return static_get_ratio_prefix(style, u); | |
895 | } | |
896 | static string_type static_get_ratio_prefix(duration_style style, peta) | |
897 | { | |
898 | if (style == duration_style::symbol) return ratio_string<peta, CharT>::symbol(); | |
899 | return ratio_string<peta, CharT>::prefix(); | |
900 | } | |
901 | virtual string_type do_get_ratio_prefix(duration_style style, exa u) const | |
902 | { | |
903 | return static_get_ratio_prefix(style, u); | |
904 | } | |
905 | static string_type static_get_ratio_prefix(duration_style style, exa) | |
906 | { | |
907 | if (style == duration_style::symbol) return ratio_string<exa, CharT>::symbol(); | |
908 | return ratio_string<exa, CharT>::prefix(); | |
909 | } | |
910 | ||
911 | protected: | |
912 | template <typename Period> | |
913 | string_type* fill_units(string_type* it, Period) const | |
914 | { | |
915 | std::size_t pfs = do_get_plural_forms(); | |
916 | for (std::size_t pf = 0; pf < pfs; ++pf) | |
917 | { | |
918 | *it++ = do_get_unit(duration_style::prefix, Period(), pf); | |
919 | } | |
920 | *it++ = do_get_unit(duration_style::symbol, Period(), 0); | |
921 | return it; | |
922 | } | |
923 | public: | |
924 | template <typename Period> | |
925 | static string_type* static_fill_units(string_type* it, Period) | |
926 | { | |
927 | std::size_t pfs = static_get_plural_forms(); | |
928 | for (std::size_t pf = 0; pf < pfs; ++pf) | |
929 | { | |
930 | *it++ = static_get_unit(duration_style::prefix, Period(), pf); | |
931 | } | |
932 | *it++ = static_get_unit(duration_style::symbol, Period(), 0); | |
933 | return it; | |
934 | } | |
935 | static string_type* static_init_valid_units(string_type* it) | |
936 | { | |
937 | it = static_fill_units(it, atto()); | |
938 | it = static_fill_units(it, femto()); | |
939 | it = static_fill_units(it, pico()); | |
940 | it = static_fill_units(it, nano()); | |
941 | it = static_fill_units(it, micro()); | |
942 | it = static_fill_units(it, milli()); | |
943 | it = static_fill_units(it, centi()); | |
944 | it = static_fill_units(it, deci()); | |
945 | it = static_fill_units(it, deca()); | |
946 | it = static_fill_units(it, hecto()); | |
947 | it = static_fill_units(it, kilo()); | |
948 | it = static_fill_units(it, mega()); | |
949 | it = static_fill_units(it, giga()); | |
950 | it = static_fill_units(it, tera()); | |
951 | it = static_fill_units(it, peta()); | |
952 | it = static_fill_units(it, exa()); | |
953 | it = static_fill_units(it, ratio<1> ()); | |
954 | it = static_fill_units(it, ratio<60> ()); | |
955 | it = static_fill_units(it, ratio<3600> ()); | |
956 | return it; | |
957 | } | |
958 | }; | |
959 | ||
960 | namespace detail | |
961 | { | |
962 | ||
963 | template<typename CharT> | |
964 | struct duration_units_default_initializer_t | |
965 | { | |
966 | duration_units_default_initializer_t() | |
967 | { | |
968 | if (!duration_units_default_holder<CharT>::initialized_) | |
969 | { | |
970 | typedef typename duration_units_default_holder<CharT>::string_type string_type; | |
971 | duration_units_default_holder<CharT>::n_d_valid_units_ = new string_type[3]; | |
972 | duration_units_default_holder<CharT>::valid_units_ = new string_type[19 * 3]; | |
973 | ||
974 | string_type* it = duration_units_default_holder<CharT>::n_d_valid_units_; | |
975 | it = duration_units_default<CharT>::static_fill_units(it, ratio<1> ()); | |
976 | it = duration_units_default<CharT>::static_init_valid_units(duration_units_default_holder<CharT>::valid_units_); | |
977 | ||
978 | duration_units_default_holder<CharT>::initialized_ = true; | |
979 | } | |
980 | } | |
981 | ~duration_units_default_initializer_t() | |
982 | { | |
983 | if (duration_units_default_holder<CharT>::initialized_) | |
984 | { | |
985 | delete[] duration_units_default_holder<CharT>::n_d_valid_units_; | |
986 | duration_units_default_holder<CharT>::n_d_valid_units_ = 0; | |
987 | delete[] duration_units_default_holder<CharT>::valid_units_; | |
988 | duration_units_default_holder<CharT>::valid_units_ = 0; | |
989 | duration_units_default_holder<CharT>::initialized_ = false; | |
990 | } | |
991 | } | |
992 | }; | |
993 | namespace /**/ | |
994 | { | |
995 | duration_units_default_initializer_t<char> duration_units_default_initializer; | |
996 | duration_units_default_initializer_t<wchar_t> wduration_units_default_initializer; | |
997 | } // namespace | |
998 | } | |
999 | } // chrono | |
1000 | ||
1001 | } // boost | |
1002 | ||
1003 | #endif // header |