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1 : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
2 : /*
3 : * This file is part of the LibreOffice project.
4 : *
5 : * This Source Code Form is subject to the terms of the Mozilla Public
6 : * License, v. 2.0. If a copy of the MPL was not distributed with this
7 : * file, You can obtain one at http://mozilla.org/MPL/2.0/.
8 : *
9 : * This file incorporates work covered by the following license notice:
10 : *
11 : * Licensed to the Apache Software Foundation (ASF) under one or more
12 : * contributor license agreements. See the NOTICE file distributed
13 : * with this work for additional information regarding copyright
14 : * ownership. The ASF licenses this file to you under the Apache
15 : * License, Version 2.0 (the "License"); you may not use this file
16 : * except in compliance with the License. You may obtain a copy of
17 : * the License at http://www.apache.org/licenses/LICENSE-2.0 .
18 : */
19 :
20 : #include <unotools/datetime.hxx>
21 : #include <tools/date.hxx>
22 : #include <tools/time.hxx>
23 : #include <tools/datetime.hxx>
24 : #include <rtl/ustrbuf.hxx>
25 : #include <rtl/math.hxx>
26 :
27 : namespace
28 : {
29 : /** convert string to number with optional min and max values */
30 : template <typename T>
31 108 : bool convertNumber( T& rValue,
32 : const OUString& rString,
33 : T /*nMin*/ = -1, T /*nMax*/ = -1)
34 : {
35 108 : bool bNeg = false;
36 108 : rValue = 0;
37 :
38 108 : sal_Int32 nPos = 0L;
39 108 : sal_Int32 nLen = rString.getLength();
40 :
41 : // skip white space
42 216 : while( nPos < nLen && ' ' == rString[nPos] )
43 0 : nPos++;
44 :
45 108 : if( nPos < nLen && '-' == rString[nPos] )
46 : {
47 0 : bNeg = true;
48 0 : nPos++;
49 : }
50 :
51 : // get number
52 972 : while( nPos < nLen &&
53 252 : '0' <= rString[nPos] &&
54 252 : '9' >= rString[nPos] )
55 : {
56 : // TODO: check overflow!
57 252 : rValue *= 10;
58 252 : rValue += (rString[nPos] - sal_Unicode('0'));
59 252 : nPos++;
60 : }
61 :
62 108 : if( bNeg )
63 0 : rValue *= -1;
64 :
65 108 : return nPos == nLen;
66 : }
67 :
68 : // although the standard calls for fixed-length (zero-padded) tokens
69 : // (in their integer part), we are here liberal and allow shorter tokens
70 : // (when there are separators, else it is ambiguous).
71 : // Note that:
72 : // the token separator is OPTIONAL
73 : // empty string is a valid token! (to recognise hh or hhmm or hh:mm formats)
74 : // returns: success / failure
75 : // in case of failure, no reference argument is changed
76 : // arguments:
77 : // i_str: string to extract token from
78 : // index: index in i_str where to start tokenizing
79 : // after return, start of *next* token (if any)
80 : // if this was the last token, then the value is UNDEFINED
81 : // o_strInt: output; integer part of token
82 : // o_bFraction: output; was there a fractional part?
83 : // o_strFrac: output; fractional part of token
84 54 : bool impl_getISO8601TimeToken(const OUString &i_str, sal_Int32 &nPos, OUString &resInt, bool &bFraction, OUString &resFrac)
85 : {
86 54 : bFraction = false;
87 : // all tokens are of length 2
88 54 : const sal_Int32 nEndPos = nPos + 2;
89 54 : const sal_Unicode c0 = '0';
90 54 : const sal_Unicode c9 = '9';
91 54 : const sal_Unicode sep = ':';
92 162 : for (;nPos < nEndPos && nPos < i_str.getLength(); ++nPos)
93 : {
94 108 : const sal_Unicode c = i_str[nPos];
95 108 : if (c == sep)
96 0 : return true;
97 108 : if (c < c0 || c > c9)
98 0 : return false;
99 108 : resInt += OUString(c);
100 : }
101 54 : if (nPos == i_str.getLength() || i_str[nPos] == sep)
102 36 : return true;
103 18 : if (i_str[nPos] == ',' || i_str[nPos] == '.')
104 : {
105 0 : bFraction = true;
106 0 : ++nPos;
107 0 : for (; nPos < i_str.getLength(); ++nPos)
108 : {
109 0 : const sal_Unicode c = i_str[nPos];
110 0 : if (c == 'Z' || c == '+' || c == '-')
111 : {
112 0 : --nPos; // we don't want to skip the tz separator
113 0 : return true;
114 : }
115 0 : if (c == sep)
116 : // fractional part allowed only in *last* token
117 0 : return false;
118 0 : if (c < c0 || c > c9)
119 0 : return false;
120 0 : resFrac += OUString(c);
121 : }
122 : OSL_ENSURE(nPos == i_str.getLength(), "impl_getISO8601TimeToken internal error; expected to be at end of string");
123 0 : return true;
124 : }
125 18 : if (i_str[nPos] == 'Z' || i_str[nPos] == '+' || i_str[nPos] == '-')
126 : {
127 18 : --nPos; // we don't want to skip the tz separator
128 18 : return true;
129 : }
130 : else
131 0 : return false;
132 : }
133 54 : inline bool getISO8601TimeToken(const OUString &i_str, sal_Int32 &io_index, OUString &o_strInt, bool &o_bFraction, OUString &o_strFrac)
134 : {
135 54 : OUString resInt;
136 108 : OUString resFrac;
137 54 : bool bFraction = false;
138 54 : sal_Int32 index = io_index;
139 54 : if(!impl_getISO8601TimeToken(i_str, index, resInt, bFraction, resFrac))
140 0 : return false;
141 : else
142 : {
143 54 : io_index = index+1;
144 54 : o_strInt = resInt;
145 54 : o_strFrac = resFrac;
146 54 : o_bFraction = bFraction;
147 54 : return true;
148 54 : }
149 : }
150 18 : inline bool getISO8601TimeZoneToken(const OUString &i_str, sal_Int32 &io_index, OUString &o_strInt)
151 : {
152 18 : const sal_Unicode c0 = '0';
153 18 : const sal_Unicode c9 = '9';
154 18 : const sal_Unicode sep = ':';
155 18 : if (i_str[io_index] == 'Z') // UTC timezone indicator
156 : {
157 18 : ++io_index;
158 18 : o_strInt = "Z";
159 18 : return true;
160 : }
161 0 : else if (i_str[io_index] == '+' || i_str[io_index] == '-') // other timezones indicator
162 : {
163 0 : ++io_index;
164 0 : o_strInt = "";
165 0 : for (; io_index < i_str.getLength(); ++io_index)
166 : {
167 0 : const sal_Unicode c = i_str[io_index];
168 0 : if ((c < c0 || c > c9) && c != sep)
169 0 : return false;
170 0 : o_strInt += OUString(c);
171 : }
172 0 : return true;
173 : }
174 : else
175 0 : return false;
176 : }
177 : }
178 :
179 : namespace utl
180 : {
181 :
182 0 : void typeConvert(const Date& _rDate, css::util::Date& _rOut)
183 : {
184 0 : _rOut.Day = _rDate.GetDay();
185 0 : _rOut.Month = _rDate.GetMonth();
186 0 : _rOut.Year = _rDate.GetYear();
187 0 : }
188 :
189 0 : void typeConvert(const css::util::Date& _rDate, Date& _rOut)
190 : {
191 0 : _rOut = Date(_rDate.Day, _rDate.Month, _rDate.Year);
192 0 : }
193 :
194 0 : void typeConvert(const DateTime& _rDateTime, css::util::DateTime& _rOut)
195 : {
196 0 : _rOut.Year = _rDateTime.GetYear();
197 0 : _rOut.Month = _rDateTime.GetMonth();
198 0 : _rOut.Day = _rDateTime.GetDay();
199 0 : _rOut.Hours = _rDateTime.GetHour();
200 0 : _rOut.Minutes = _rDateTime.GetMin();
201 0 : _rOut.Seconds = _rDateTime.GetSec();
202 0 : _rOut.NanoSeconds = _rDateTime.GetNanoSec();
203 0 : }
204 :
205 0 : void typeConvert(const css::util::DateTime& _rDateTime, DateTime& _rOut)
206 : {
207 0 : Date aDate(_rDateTime.Day, _rDateTime.Month, _rDateTime.Year);
208 0 : tools::Time aTime(_rDateTime.Hours, _rDateTime.Minutes, _rDateTime.Seconds, _rDateTime.NanoSeconds);
209 0 : _rOut = DateTime(aDate, aTime);
210 0 : }
211 :
212 18 : void extractDate(const css::util::DateTime& _rDateTime, css::util::Date& _rOut)
213 : {
214 18 : _rOut.Day = _rDateTime.Day;
215 18 : _rOut.Month = _rDateTime.Month;
216 18 : _rOut.Year = _rDateTime.Year;
217 18 : }
218 :
219 0 : OUString toISO8601(const css::util::DateTime& rDateTime)
220 : {
221 0 : OUStringBuffer rBuffer;
222 0 : rBuffer.append((sal_Int32) rDateTime.Year);
223 0 : rBuffer.append('-');
224 0 : if( rDateTime.Month < 10 )
225 0 : rBuffer.append('0');
226 0 : rBuffer.append((sal_Int32) rDateTime.Month);
227 0 : rBuffer.append('-');
228 0 : if( rDateTime.Day < 10 )
229 0 : rBuffer.append('0');
230 0 : rBuffer.append((sal_Int32) rDateTime.Day);
231 :
232 0 : if( rDateTime.NanoSeconds != 0 ||
233 0 : rDateTime.Seconds != 0 ||
234 0 : rDateTime.Minutes != 0 ||
235 0 : rDateTime.Hours != 0 )
236 : {
237 0 : rBuffer.append('T');
238 0 : if( rDateTime.Hours < 10 )
239 0 : rBuffer.append('0');
240 0 : rBuffer.append((sal_Int32) rDateTime.Hours);
241 0 : rBuffer.append(':');
242 0 : if( rDateTime.Minutes < 10 )
243 0 : rBuffer.append('0');
244 0 : rBuffer.append((sal_Int32) rDateTime.Minutes);
245 0 : rBuffer.append(':');
246 0 : if( rDateTime.Seconds < 10 )
247 0 : rBuffer.append('0');
248 0 : rBuffer.append((sal_Int32) rDateTime.Seconds);
249 0 : if ( rDateTime.NanoSeconds > 0)
250 : {
251 : OSL_ENSURE(rDateTime.NanoSeconds < 1000000000,"NanoSeconds cannot be more than 999 999 999");
252 0 : rBuffer.append(',');
253 0 : std::ostringstream ostr;
254 0 : ostr.fill('0');
255 0 : ostr.width(9);
256 0 : ostr << rDateTime.NanoSeconds;
257 0 : rBuffer.append(OUString::createFromAscii(ostr.str().c_str()));
258 : }
259 : }
260 0 : return rBuffer.makeStringAndClear();
261 : }
262 :
263 : /** convert ISO8601 DateTime String to util::DateTime */
264 36 : bool ISO8601parseDateTime(const OUString &rString, css::util::DateTime& rDateTime)
265 : {
266 36 : bool bSuccess = true;
267 :
268 72 : rtl::OUString aDateStr, aTimeStr;
269 36 : css::util::Date aDate;
270 36 : css::util::Time aTime;
271 36 : sal_Int32 nPos = rString.indexOf( 'T' );
272 36 : if ( nPos >= 0 )
273 : {
274 18 : aDateStr = rString.copy( 0, nPos );
275 18 : aTimeStr = rString.copy( nPos + 1 );
276 : }
277 : else
278 18 : aDateStr = rString; // no separator: only date part
279 :
280 36 : bSuccess = ISO8601parseDate(aDateStr, aDate);
281 :
282 36 : if ( bSuccess && !aTimeStr.isEmpty() ) // time is optional
283 : {
284 18 : bSuccess = ISO8601parseTime(aTimeStr, aTime);
285 : }
286 :
287 36 : if (bSuccess)
288 : {
289 : rDateTime = css::util::DateTime(aTime.NanoSeconds, aTime.Seconds, aTime.Minutes, aTime.Hours,
290 18 : aDate.Day, aDate.Month, aDate.Year, false);
291 : }
292 :
293 72 : return bSuccess;
294 : }
295 :
296 : /** convert ISO8601 Date String to util::Date */
297 : // TODO: supports only calendar dates YYYY-MM-DD
298 : // MISSING: calendar dates YYYYMMDD YYYY-MM
299 : // year, week date, ordinal date
300 36 : bool ISO8601parseDate(const OUString &aDateStr, css::util::Date& rDate)
301 : {
302 36 : bool bSuccess = true;
303 :
304 36 : sal_Int32 nYear = 1899;
305 36 : sal_Int32 nMonth = 12;
306 36 : sal_Int32 nDay = 30;
307 :
308 36 : const sal_Unicode* pStr = aDateStr.getStr();
309 36 : sal_Int32 nDateTokens = 1;
310 252 : while ( *pStr )
311 : {
312 180 : if ( *pStr == '-' )
313 36 : nDateTokens++;
314 180 : pStr++;
315 : }
316 36 : if ( nDateTokens > 3 || aDateStr.isEmpty() )
317 18 : bSuccess = false;
318 : else
319 : {
320 18 : sal_Int32 n = 0;
321 18 : if ( !convertNumber<sal_Int32>( nYear, aDateStr.getToken( 0, '-', n ), 0, 9999 ) )
322 0 : bSuccess = false;
323 18 : if ( nDateTokens >= 2 )
324 18 : if ( !convertNumber<sal_Int32>( nMonth, aDateStr.getToken( 0, '-', n ), 0, 12 ) )
325 0 : bSuccess = false;
326 18 : if ( nDateTokens >= 3 )
327 18 : if ( !convertNumber<sal_Int32>( nDay, aDateStr.getToken( 0, '-', n ), 0, 31 ) )
328 0 : bSuccess = false;
329 : }
330 :
331 36 : if (bSuccess)
332 : {
333 18 : rDate.Year = (sal_uInt16)nYear;
334 18 : rDate.Month = (sal_uInt16)nMonth;
335 18 : rDate.Day = (sal_uInt16)nDay;
336 : }
337 :
338 36 : return bSuccess;
339 : }
340 :
341 : /** convert ISO8601 Time String to util::Time */
342 18 : bool ISO8601parseTime(const OUString &aTimeStr, css::util::Time& rTime)
343 : {
344 18 : bool bSuccess = true;
345 :
346 18 : sal_Int32 nHour = 0;
347 18 : sal_Int32 nMin = 0;
348 18 : sal_Int32 nSec = 0;
349 18 : sal_Int32 nNanoSec = 0;
350 :
351 18 : sal_Int32 n = 0;
352 18 : OUString tokInt;
353 36 : OUString tokFrac;
354 36 : OUString tokTz;
355 18 : bool bFrac = false;
356 : // hours
357 18 : if (bSuccess && (bSuccess = getISO8601TimeToken(aTimeStr, n, tokInt, bFrac, tokFrac)))
358 : {
359 18 : if ( bFrac && n < aTimeStr.getLength())
360 : // is it junk or the timezone?
361 0 : bSuccess = getISO8601TimeZoneToken(aTimeStr, n, tokTz);
362 18 : if (bSuccess && (bSuccess = convertNumber<sal_Int32>( nHour, tokInt, 0, 23 )) )
363 : {
364 18 : if (bFrac)
365 : {
366 : sal_Int64 fracNumerator;
367 0 : if ( (bSuccess = convertNumber(fracNumerator, tokFrac)) )
368 : {
369 0 : double frac = static_cast<double>(fracNumerator) / pow(static_cast<double>(10), static_cast<double>(tokFrac.getLength()));
370 : // minutes
371 : OSL_ENSURE(frac < 1 && frac >= 0, "ISO8601parse internal error frac hours (of hours) not between 0 and 1");
372 0 : frac *= 60;
373 0 : nMin = floor(frac);
374 0 : frac -= nMin;
375 : // seconds
376 : OSL_ENSURE(frac < 1 && frac >= 0, "ISO8601parse internal error frac minutes (of hours) not between 0 and 1");
377 0 : frac *= 60;
378 0 : nSec = floor(frac);
379 0 : frac -= nSec;
380 : // nanoseconds
381 : OSL_ENSURE(frac < 1 && frac >= 0, "ISO8601parse internal error frac seconds (of hours) not between 0 and 1");
382 0 : frac *= 1000000000;
383 0 : nNanoSec = ::rtl::math::round(frac);
384 : }
385 0 : goto end;
386 : }
387 18 : if(n >= aTimeStr.getLength())
388 0 : goto end;
389 : }
390 : }
391 :
392 : // minutes
393 18 : if (bSuccess && (bSuccess = getISO8601TimeToken(aTimeStr, n, tokInt, bFrac, tokFrac)))
394 : {
395 18 : if ( bFrac && n < aTimeStr.getLength())
396 : // is it junk or the timezone?
397 0 : bSuccess = getISO8601TimeZoneToken(aTimeStr, n, tokTz);
398 18 : if (bSuccess && (bSuccess = convertNumber<sal_Int32>( nMin, tokInt, 0, 59 )) )
399 : {
400 18 : if (bFrac)
401 : {
402 : sal_Int64 fracNumerator;
403 0 : if ( (bSuccess = convertNumber(fracNumerator, tokFrac)) )
404 : {
405 0 : double frac = static_cast<double>(fracNumerator) / pow(static_cast<double>(10), static_cast<double>(tokFrac.getLength()));
406 : // seconds
407 : OSL_ENSURE(frac < 1 && frac >= 0, "ISO8601parse internal error frac minutes (of minutes) not between 0 and 1");
408 0 : frac *= 60;
409 0 : nSec = floor(frac);
410 0 : frac -= nSec;
411 : // nanoseconds
412 : OSL_ENSURE(frac < 1 && frac >= 0, "ISO8601parse internal error frac seconds (of minutes) not between 0 and 1");
413 0 : frac *= 1000000000;
414 0 : nNanoSec = ::rtl::math::round(frac);
415 : }
416 0 : goto end;
417 : }
418 18 : if(n >= aTimeStr.getLength())
419 0 : goto end;
420 : }
421 : }
422 : // seconds
423 18 : if (bSuccess && (bSuccess = getISO8601TimeToken(aTimeStr, n, tokInt, bFrac, tokFrac)))
424 : {
425 18 : if (n < aTimeStr.getLength())
426 : // is it junk or the timezone?
427 18 : bSuccess = getISO8601TimeZoneToken(aTimeStr, n, tokTz);
428 : // max 60 for leap seconds
429 18 : if (bSuccess && (bSuccess = convertNumber<sal_Int32>( nSec, tokInt, 0, 60 )) )
430 : {
431 18 : if (bFrac)
432 : {
433 : sal_Int64 fracNumerator;
434 0 : if ( (bSuccess = convertNumber(fracNumerator, tokFrac)) )
435 : {
436 0 : double frac = static_cast<double>(fracNumerator) / pow(static_cast<double>(10), static_cast<double>(tokFrac.getLength()));
437 : // nanoseconds
438 : OSL_ENSURE(frac < 1 && frac >= 0, "ISO8601parse internal error frac seconds (of seconds) not between 0 and 1");
439 0 : frac *= 1000000000;
440 0 : nNanoSec = ::rtl::math::round(frac);
441 : }
442 0 : goto end;
443 : }
444 : }
445 : }
446 :
447 : end:
448 18 : if (bSuccess)
449 : {
450 : // normalise time
451 18 : const int secondsOverflow = (nSec == 60) ? 61 : 60;
452 18 : if (nNanoSec == 1000000000)
453 : {
454 0 : nNanoSec = 0;
455 0 : ++nSec;
456 : }
457 18 : if(nSec == secondsOverflow)
458 : {
459 0 : nSec = 0;
460 0 : ++nMin;
461 : }
462 18 : if(nMin == 60)
463 : {
464 0 : nMin = 0;
465 0 : ++nHour;
466 : }
467 18 : if(!tokTz.isEmpty())
468 18 : rTime.IsUTC = (tokTz == "Z");
469 :
470 18 : rTime.Hours = (sal_uInt16)nHour;
471 18 : rTime.Minutes = (sal_uInt16)nMin;
472 18 : rTime.Seconds = (sal_uInt16)nSec;
473 18 : rTime.NanoSeconds = nNanoSec;
474 : }
475 :
476 36 : return bSuccess;
477 : }
478 :
479 : } // namespace utl
480 :
481 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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