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1 | /* |
2 | * Copyright Andrey Semashev 2007 - 2015. | |
3 | * Distributed under the Boost Software License, Version 1.0. | |
4 | * (See accompanying file LICENSE_1_0.txt or copy at | |
5 | * http://www.boost.org/LICENSE_1_0.txt) | |
6 | */ | |
7 | /*! | |
8 | * \file date_time_format_parser.cpp | |
9 | * \author Andrey Semashev | |
10 | * \date 30.09.2012 | |
11 | * | |
12 | * \brief This header is the Boost.Log library implementation, see the library documentation | |
13 | * at http://www.boost.org/doc/libs/release/libs/log/doc/html/index.html. | |
14 | */ | |
15 | ||
16 | #include <boost/log/detail/config.hpp> | |
17 | #include <cstring> | |
18 | #include <string> | |
19 | #include <algorithm> | |
20 | #include <boost/spirit/include/karma_uint.hpp> | |
21 | #include <boost/spirit/include/karma_generate.hpp> | |
22 | #include <boost/range/iterator_range_core.hpp> | |
23 | #include <boost/log/detail/attachable_sstream_buf.hpp> | |
24 | #include <boost/log/detail/date_time_format_parser.hpp> | |
25 | #include <boost/log/detail/header.hpp> | |
26 | ||
27 | namespace karma = boost::spirit::karma; | |
28 | ||
29 | namespace boost { | |
30 | ||
31 | BOOST_LOG_OPEN_NAMESPACE | |
32 | ||
33 | namespace aux { | |
34 | ||
35 | BOOST_LOG_ANONYMOUS_NAMESPACE { | |
36 | ||
37 | template< typename CharT > | |
38 | struct string_constants; | |
39 | ||
40 | #ifdef BOOST_LOG_USE_CHAR | |
41 | ||
42 | template< > | |
43 | struct string_constants< char > | |
44 | { | |
45 | typedef char char_type; | |
46 | ||
47 | static const char_type* iso_date_format() { return "%Y%m%d"; } | |
48 | static const char_type* extended_iso_date_format() { return "%Y-%m-%d"; } | |
49 | ||
50 | static const char_type* iso_time_format() { return "%H%M%S"; } | |
51 | static const char_type* extended_iso_time_format() { return "%H:%M:%S"; } | |
52 | static const char_type* default_time_format() { return "%H:%M:%S.%f"; } | |
53 | }; | |
54 | ||
55 | #endif // BOOST_LOG_USE_CHAR | |
56 | ||
57 | #ifdef BOOST_LOG_USE_WCHAR_T | |
58 | ||
59 | template< > | |
60 | struct string_constants< wchar_t > | |
61 | { | |
62 | typedef wchar_t char_type; | |
63 | ||
64 | static const char_type* iso_date_format() { return L"%Y%m%d"; } | |
65 | static const char_type* extended_iso_date_format() { return L"%Y-%m-%d"; } | |
66 | ||
67 | static const char_type* iso_time_format() { return L"%H%M%S"; } | |
68 | static const char_type* extended_iso_time_format() { return L"%H:%M:%S"; } | |
69 | static const char_type* default_time_format() { return L"%H:%M:%S.%f"; } | |
70 | }; | |
71 | ||
72 | #endif // BOOST_LOG_USE_WCHAR_T | |
73 | ||
74 | template< typename CallbackT > | |
75 | struct common_flags | |
76 | { | |
77 | typedef CallbackT callback_type; | |
78 | typedef typename callback_type::char_type char_type; | |
79 | typedef std::basic_string< char_type > string_type; | |
80 | ||
81 | const char_type* parse(const char_type* begin, const char_type* end, callback_type& callback) | |
82 | { | |
83 | switch (begin[1]) | |
84 | { | |
85 | case '%': | |
86 | m_literal.push_back('%'); | |
87 | break; | |
88 | ||
89 | default: | |
90 | flush(callback); | |
91 | callback.on_placeholder(iterator_range< const char_type* >(begin, begin + 2)); | |
92 | break; | |
93 | } | |
94 | ||
95 | return begin + 2; | |
96 | } | |
97 | ||
98 | void add_literal(const char_type* begin, const char_type* end) | |
99 | { | |
100 | m_literal.append(begin, end); | |
101 | } | |
102 | ||
103 | void flush(callback_type& callback) | |
104 | { | |
105 | if (!m_literal.empty()) | |
106 | { | |
107 | const char_type* p = m_literal.c_str(); | |
108 | callback.on_literal(iterator_range< const char_type* >(p, p + m_literal.size())); | |
109 | m_literal.clear(); | |
110 | } | |
111 | } | |
112 | ||
113 | private: | |
114 | string_type m_literal; | |
115 | }; | |
116 | ||
117 | template< typename BaseT > | |
118 | struct date_flags : | |
119 | public BaseT | |
120 | { | |
121 | typedef typename BaseT::callback_type callback_type; | |
122 | typedef typename BaseT::char_type char_type; | |
123 | ||
124 | const char_type* parse(const char_type* begin, const char_type* end, callback_type& callback) | |
125 | { | |
126 | typedef string_constants< char_type > constants; | |
127 | ||
128 | switch (begin[1]) | |
129 | { | |
130 | case 'Y': | |
131 | { | |
132 | this->flush(callback); | |
133 | ||
134 | std::size_t len = end - begin; | |
135 | if (len >= 8 && std::memcmp(begin, constants::extended_iso_date_format(), 8 * sizeof(char_type)) == 0) | |
136 | { | |
137 | callback.on_extended_iso_date(); | |
138 | return begin + 8; | |
139 | } | |
140 | else if (len >= 6 && std::memcmp(begin, constants::iso_date_format(), 6 * sizeof(char_type)) == 0) | |
141 | { | |
142 | callback.on_iso_date(); | |
143 | return begin + 6; | |
144 | } | |
145 | else | |
146 | { | |
147 | callback.on_full_year(); | |
148 | } | |
149 | } | |
150 | break; | |
151 | ||
152 | case 'y': | |
153 | this->flush(callback); | |
154 | callback.on_short_year(); | |
155 | break; | |
156 | ||
157 | case 'm': | |
158 | this->flush(callback); | |
159 | callback.on_numeric_month(); | |
160 | break; | |
161 | ||
162 | case 'B': | |
163 | this->flush(callback); | |
164 | callback.on_full_month(); | |
165 | break; | |
166 | ||
167 | case 'b': | |
168 | this->flush(callback); | |
169 | callback.on_short_month(); | |
170 | break; | |
171 | ||
172 | case 'd': | |
173 | this->flush(callback); | |
174 | callback.on_month_day(true); | |
175 | break; | |
176 | ||
177 | case 'e': | |
178 | this->flush(callback); | |
179 | callback.on_month_day(false); | |
180 | break; | |
181 | ||
182 | case 'w': | |
183 | this->flush(callback); | |
184 | callback.on_numeric_week_day(); | |
185 | break; | |
186 | ||
187 | case 'A': | |
188 | this->flush(callback); | |
189 | callback.on_full_week_day(); | |
190 | break; | |
191 | ||
192 | case 'a': | |
193 | this->flush(callback); | |
194 | callback.on_short_week_day(); | |
195 | break; | |
196 | ||
197 | default: | |
198 | return BaseT::parse(begin, end, callback); | |
199 | } | |
200 | ||
201 | return begin + 2; | |
202 | } | |
203 | }; | |
204 | ||
205 | template< typename BaseT > | |
206 | struct time_flags : | |
207 | public BaseT | |
208 | { | |
209 | typedef typename BaseT::callback_type callback_type; | |
210 | typedef typename BaseT::char_type char_type; | |
211 | ||
212 | const char_type* parse(const char_type* begin, const char_type* end, callback_type& callback) | |
213 | { | |
214 | typedef string_constants< char_type > constants; | |
215 | ||
216 | switch (begin[1]) | |
217 | { | |
218 | case 'O': | |
219 | case 'H': | |
220 | { | |
221 | this->flush(callback); | |
222 | ||
223 | std::size_t len = end - begin; | |
224 | if (len >= 11 && std::memcmp(begin, constants::default_time_format(), 11 * sizeof(char_type)) == 0) | |
225 | { | |
226 | callback.on_default_time(); | |
227 | return begin + 11; | |
228 | } | |
229 | else if (len >= 8 && std::memcmp(begin, constants::extended_iso_time_format(), 8 * sizeof(char_type)) == 0) | |
230 | { | |
231 | callback.on_extended_iso_time(); | |
232 | return begin + 8; | |
233 | } | |
234 | else if (len >= 6 && std::memcmp(begin, constants::iso_time_format(), 6 * sizeof(char_type)) == 0) | |
235 | { | |
236 | callback.on_iso_time(); | |
237 | return begin + 6; | |
238 | } | |
239 | else | |
240 | { | |
241 | callback.on_hours(true); | |
242 | } | |
243 | } | |
244 | break; | |
245 | ||
246 | case 'T': | |
247 | this->flush(callback); | |
248 | callback.on_extended_iso_time(); | |
249 | break; | |
250 | ||
251 | case 'k': | |
252 | this->flush(callback); | |
253 | callback.on_hours(false); | |
254 | break; | |
255 | ||
256 | case 'I': | |
257 | this->flush(callback); | |
258 | callback.on_hours_12(true); | |
259 | break; | |
260 | ||
261 | case 'l': | |
262 | this->flush(callback); | |
263 | callback.on_hours_12(false); | |
264 | break; | |
265 | ||
266 | case 'M': | |
267 | this->flush(callback); | |
268 | callback.on_minutes(); | |
269 | break; | |
270 | ||
271 | case 'S': | |
272 | this->flush(callback); | |
273 | callback.on_seconds(); | |
274 | break; | |
275 | ||
276 | case 'f': | |
277 | this->flush(callback); | |
278 | callback.on_fractional_seconds(); | |
279 | break; | |
280 | ||
281 | case 'P': | |
282 | this->flush(callback); | |
283 | callback.on_am_pm(false); | |
284 | break; | |
285 | ||
286 | case 'p': | |
287 | this->flush(callback); | |
288 | callback.on_am_pm(true); | |
289 | break; | |
290 | ||
291 | case 'Q': | |
292 | this->flush(callback); | |
293 | callback.on_extended_iso_time_zone(); | |
294 | break; | |
295 | ||
296 | case 'q': | |
297 | this->flush(callback); | |
298 | callback.on_iso_time_zone(); | |
299 | break; | |
300 | ||
301 | case '-': | |
302 | this->flush(callback); | |
303 | callback.on_duration_sign(false); | |
304 | break; | |
305 | ||
306 | case '+': | |
307 | this->flush(callback); | |
308 | callback.on_duration_sign(true); | |
309 | break; | |
310 | ||
311 | default: | |
312 | return BaseT::parse(begin, end, callback); | |
313 | } | |
314 | ||
315 | return begin + 2; | |
316 | } | |
317 | }; | |
318 | ||
319 | template< typename CharT, typename ParserT, typename CallbackT > | |
320 | inline void parse_format(const CharT* begin, const CharT* end, ParserT& parser, CallbackT& callback) | |
321 | { | |
322 | typedef CharT char_type; | |
323 | ||
324 | while (begin != end) | |
325 | { | |
326 | const char_type* p = std::find(begin, end, static_cast< char_type >('%')); | |
327 | parser.add_literal(begin, p); | |
328 | ||
329 | if ((end - p) >= 2) | |
330 | { | |
331 | begin = parser.parse(p, end, callback); | |
332 | } | |
333 | else | |
334 | { | |
335 | if (p != end) | |
336 | parser.add_literal(p, end); // a single '%' character at the end of the string | |
337 | begin = end; | |
338 | } | |
339 | } | |
340 | ||
341 | parser.flush(callback); | |
342 | } | |
343 | ||
344 | } // namespace | |
345 | ||
346 | //! Parses the date format string and invokes the callback object | |
347 | template< typename CharT > | |
348 | BOOST_LOG_API void parse_date_format(const CharT* begin, const CharT* end, date_format_parser_callback< CharT >& callback) | |
349 | { | |
350 | typedef CharT char_type; | |
351 | typedef date_format_parser_callback< char_type > callback_type; | |
352 | date_flags< common_flags< callback_type > > parser; | |
353 | parse_format(begin, end, parser, callback); | |
354 | } | |
355 | ||
356 | //! Parses the time format string and invokes the callback object | |
357 | template< typename CharT > | |
358 | BOOST_LOG_API void parse_time_format(const CharT* begin, const CharT* end, time_format_parser_callback< CharT >& callback) | |
359 | { | |
360 | typedef CharT char_type; | |
361 | typedef time_format_parser_callback< char_type > callback_type; | |
362 | time_flags< common_flags< callback_type > > parser; | |
363 | parse_format(begin, end, parser, callback); | |
364 | } | |
365 | ||
366 | //! Parses the date and time format string and invokes the callback object | |
367 | template< typename CharT > | |
368 | BOOST_LOG_API void parse_date_time_format(const CharT* begin, const CharT* end, date_time_format_parser_callback< CharT >& callback) | |
369 | { | |
370 | typedef CharT char_type; | |
371 | typedef date_time_format_parser_callback< char_type > callback_type; | |
372 | date_flags< time_flags< common_flags< callback_type > > > parser; | |
373 | parse_format(begin, end, parser, callback); | |
374 | } | |
375 | ||
376 | template< typename CharT > | |
377 | BOOST_LOG_API void put_integer(boost::log::aux::basic_ostringstreambuf< CharT >& strbuf, uint32_t value, unsigned int width, CharT fill_char) | |
378 | { | |
379 | typedef CharT char_type; | |
380 | char_type buf[std::numeric_limits< uint32_t >::digits10 + 2]; | |
381 | char_type* p = buf; | |
382 | ||
383 | typedef karma::uint_generator< uint32_t, 10 > uint_gen; | |
384 | karma::generate(p, uint_gen(), value); | |
385 | const std::size_t len = p - buf; | |
386 | if (len < width) | |
387 | strbuf.append(width - len, fill_char); | |
388 | strbuf.append(buf, len); | |
389 | } | |
390 | ||
391 | #ifdef BOOST_LOG_USE_CHAR | |
392 | ||
393 | template BOOST_LOG_API | |
394 | void parse_date_format(const char* begin, const char* end, date_format_parser_callback< char >& callback); | |
395 | template BOOST_LOG_API | |
396 | void parse_time_format(const char* begin, const char* end, time_format_parser_callback< char >& callback); | |
397 | template BOOST_LOG_API | |
398 | void parse_date_time_format(const char* begin, const char* end, date_time_format_parser_callback< char >& callback); | |
399 | template BOOST_LOG_API | |
400 | void put_integer(boost::log::aux::basic_ostringstreambuf< char >& strbuf, uint32_t value, unsigned int width, char fill_char); | |
401 | ||
402 | #endif // BOOST_LOG_USE_CHAR | |
403 | ||
404 | #ifdef BOOST_LOG_USE_WCHAR_T | |
405 | ||
406 | template BOOST_LOG_API | |
407 | void parse_date_format(const wchar_t* begin, const wchar_t* end, date_format_parser_callback< wchar_t >& callback); | |
408 | template BOOST_LOG_API | |
409 | void parse_time_format(const wchar_t* begin, const wchar_t* end, time_format_parser_callback< wchar_t >& callback); | |
410 | template BOOST_LOG_API | |
411 | void parse_date_time_format(const wchar_t* begin, const wchar_t* end, date_time_format_parser_callback< wchar_t >& callback); | |
412 | template BOOST_LOG_API | |
413 | void put_integer(boost::log::aux::basic_ostringstreambuf< wchar_t >& strbuf, uint32_t value, unsigned int width, wchar_t fill_char); | |
414 | ||
415 | #endif // BOOST_LOG_USE_WCHAR_T | |
416 | ||
417 | } // namespace aux | |
418 | ||
419 | BOOST_LOG_CLOSE_NAMESPACE // namespace log | |
420 | ||
421 | } // namespace boost | |
422 | ||
423 | #include <boost/log/detail/footer.hpp> |