59177427 |
1 | <?php |
7350889b |
2 | |
35586184 |
3 | /** |
4 | * date.php |
5 | * |
35586184 |
6 | * Takes a date and parses it into a usable format. The form that a |
7 | * date SHOULD arrive in is: |
8 | * <Tue,> 29 Jun 1999 09:52:11 -0500 (EDT) |
9 | * (as specified in RFC 822) -- 'Tue' is optional |
10 | * |
47ccfad4 |
11 | * @copyright © 1999-2006 The SquirrelMail Project Team |
4b4abf93 |
12 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
31841a9e |
13 | * @version $Id$ |
d6c32258 |
14 | * @package squirrelmail |
371e2a0d |
15 | * @subpackage date |
35586184 |
16 | */ |
17 | |
d6c32258 |
18 | /** Load up some useful constants */ |
b68edc75 |
19 | require_once(SM_PATH . 'functions/constants.php'); |
35586184 |
20 | |
8b096f0a |
21 | /** |
22 | * Corrects a time stamp to be the local time. |
23 | * |
24 | * @param int stamp the timestamp to adjust |
25 | * @param string tzc the timezone correction |
26 | * @return int the corrected timestamp |
27 | */ |
d5c4ae7c |
28 | function getGMTSeconds($stamp, $tzc) { |
dc06f88c |
29 | /* date couldn't be parsed */ |
913ed9a3 |
30 | if ($stamp == -1) { |
31 | return -1; |
32 | } |
d5c4ae7c |
33 | /* timezone correction, expressed as `shhmm' */ |
34 | switch($tzc) |
dc06f88c |
35 | { |
36 | case 'Pacific': |
37 | case 'PST': |
d5c4ae7c |
38 | $tzc = '-0800'; |
dc06f88c |
39 | break; |
c2e29558 |
40 | case 'Mountain': |
41 | case 'MST': |
42 | case 'PDT': |
43 | $tzc = '-0700'; |
dc06f88c |
44 | break; |
45 | case 'Central': |
46 | case 'CST': |
c2e29558 |
47 | case 'MDT': |
48 | $tzc = '-0600'; |
dc06f88c |
49 | break; |
50 | case 'Eastern': |
51 | case 'EST': |
c2e29558 |
52 | case 'CDT': |
53 | $tzc = '-0500'; |
dc06f88c |
54 | break; |
55 | case 'EDT': |
d5c4ae7c |
56 | $tzc = '-0400'; |
dc06f88c |
57 | break; |
c2e29558 |
58 | case 'GMT': |
59 | $tzc = '+0000'; |
dc06f88c |
60 | break; |
61 | case 'BST': |
d5c4ae7c |
62 | case 'MET': |
63 | case 'CET': |
64 | $tzc = '+0100'; |
65 | break; |
dc06f88c |
66 | case 'EET': |
c2e29558 |
67 | case 'IST': |
68 | case 'MET DST': |
69 | case 'METDST': |
70 | $tzc = '+0200'; |
dc06f88c |
71 | break; |
c2e29558 |
72 | case 'HKT': |
73 | $tzc = '+0800'; |
dc06f88c |
74 | break; |
c2e29558 |
75 | case 'JST': |
dc06f88c |
76 | case 'KST': |
c2e29558 |
77 | $tzc = '+0900'; |
dc06f88c |
78 | break; |
0e4ae91a |
79 | } |
d5c4ae7c |
80 | $neg = false; |
81 | if (substr($tzc, 0, 1) == '-') { |
0e4ae91a |
82 | $neg = true; |
d5c4ae7c |
83 | } else if (substr($tzc, 0, 1) != '+') { |
84 | $tzc = '+'.$tzc; |
0e4ae91a |
85 | } |
d5c4ae7c |
86 | $hh = substr($tzc,1,2); |
87 | $mm = substr($tzc,3,2); |
88 | $iTzc = ($hh * 60 + $mm) * 60; |
c2e29558 |
89 | if ($neg) $iTzc = -1 * (int) $iTzc; |
d5c4ae7c |
90 | /* stamp in gmt */ |
91 | $stamp -= $iTzc; |
4f51df66 |
92 | /* now find what the server is at */ |
0e4ae91a |
93 | $current = date('Z', time()); |
d5c4ae7c |
94 | /* stamp in local timezone */ |
95 | $stamp += $current; |
c2e29558 |
96 | |
0e4ae91a |
97 | return $stamp; |
98 | } |
0f1835f3 |
99 | |
0e4ae91a |
100 | /** |
8b096f0a |
101 | * Returns the (localized) string for a given day number. |
102 | * Switch system has been intentionaly chosen for the |
103 | * internationalization of month and day names. The reason |
104 | * is to make sure that _("") strings will go into the |
105 | * main po. |
106 | * |
107 | * @param int day_number the day number |
108 | * @return string the day in human readable form |
109 | */ |
0e4ae91a |
110 | function getDayName( $day_number ) { |
0f1835f3 |
111 | |
0e4ae91a |
112 | switch( $day_number ) { |
113 | case 0: |
114 | $ret = _("Sunday"); |
115 | break; |
116 | case 1: |
117 | $ret = _("Monday"); |
118 | break; |
119 | case 2: |
120 | $ret = _("Tuesday"); |
121 | break; |
122 | case 3: |
123 | $ret = _("Wednesday"); |
124 | break; |
125 | case 4: |
126 | $ret = _("Thursday"); |
127 | break; |
128 | case 5: |
129 | $ret = _("Friday"); |
130 | break; |
131 | case 6: |
132 | $ret = _("Saturday"); |
133 | break; |
134 | default: |
135 | $ret = ''; |
136 | } |
137 | return( $ret ); |
138 | } |
d59837cf |
139 | |
8b096f0a |
140 | /** |
141 | * Like getDayName, but returns the short form |
142 | * @param int day_number the day number |
143 | * @return string the day in short human readable form |
144 | */ |
22d73941 |
145 | function getDayAbrv( $day_number ) { |
146 | |
147 | switch( $day_number ) { |
148 | case 0: |
149 | $ret = _("Sun"); |
150 | break; |
151 | case 1: |
152 | $ret = _("Mon"); |
153 | break; |
154 | case 2: |
155 | $ret = _("Tue"); |
156 | break; |
157 | case 3: |
158 | $ret = _("Wed"); |
159 | break; |
160 | case 4: |
161 | $ret = _("Thu"); |
162 | break; |
163 | case 5: |
164 | $ret = _("Fri"); |
165 | break; |
166 | case 6: |
167 | $ret = _("Sat"); |
168 | break; |
169 | default: |
170 | $ret = ''; |
171 | } |
172 | return( $ret ); |
173 | } |
174 | |
8b096f0a |
175 | |
176 | /** |
177 | * Returns the (localized) string for a given month number. |
178 | * |
c2e29558 |
179 | * @param string month_number the month number (01..12) |
8b096f0a |
180 | * @return string the month name in human readable form |
181 | */ |
0e4ae91a |
182 | function getMonthName( $month_number ) { |
183 | switch( $month_number ) { |
184 | case '01': |
185 | $ret = _("January"); |
186 | break; |
187 | case '02': |
188 | $ret = _("February"); |
189 | break; |
190 | case '03': |
191 | $ret = _("March"); |
192 | break; |
193 | case '04': |
194 | $ret = _("April"); |
195 | break; |
196 | case '05': |
197 | $ret = _("May"); |
198 | break; |
199 | case '06': |
200 | $ret = _("June"); |
201 | break; |
202 | case '07': |
203 | $ret = _("July"); |
204 | break; |
205 | case '08': |
206 | $ret = _("August"); |
207 | break; |
208 | case '09': |
209 | $ret = _("September"); |
210 | break; |
211 | case '10': |
212 | $ret = _("October"); |
213 | break; |
214 | case '11': |
215 | $ret = _("November"); |
216 | break; |
217 | case '12': |
218 | $ret = _("December"); |
219 | break; |
220 | default: |
221 | $ret = ''; |
222 | } |
223 | return( $ret ); |
224 | } |
d59837cf |
225 | |
8b096f0a |
226 | /** |
227 | * Returns the (localized) string for a given month number, |
228 | * short representation. |
229 | * |
c2e29558 |
230 | * @param string month_number the month number (01..12) |
8b096f0a |
231 | * @return string the shortened month in human readable form |
232 | */ |
22d73941 |
233 | function getMonthAbrv( $month_number ) { |
234 | switch( $month_number ) { |
235 | case '01': |
236 | $ret = _("Jan"); |
237 | break; |
238 | case '02': |
239 | $ret = _("Feb"); |
240 | break; |
241 | case '03': |
242 | $ret = _("Mar"); |
243 | break; |
244 | case '04': |
245 | $ret = _("Apr"); |
246 | break; |
247 | case '05': |
248 | $ret = _("May"); |
249 | break; |
250 | case '06': |
251 | $ret = _("Jun"); |
252 | break; |
253 | case '07': |
254 | $ret = _("Jul"); |
255 | break; |
256 | case '08': |
257 | $ret = _("Aug"); |
258 | break; |
259 | case '09': |
260 | $ret = _("Sep"); |
261 | break; |
262 | case '10': |
263 | $ret = _("Oct"); |
264 | break; |
265 | case '11': |
266 | $ret = _("Nov"); |
267 | break; |
268 | case '12': |
269 | $ret = _("Dec"); |
270 | break; |
271 | default: |
272 | $ret = ''; |
273 | } |
274 | return( $ret ); |
275 | } |
276 | |
8b096f0a |
277 | /** |
278 | * Returns the localized representation of the date/time. |
279 | * |
280 | * @param string date_format The format for the date, like the input for the PHP date() function. |
281 | * @param int stamp the timestamp to convert |
282 | * @return string a full date representation |
283 | */ |
0e4ae91a |
284 | function date_intl( $date_format, $stamp ) { |
e6b76811 |
285 | $ret = str_replace( array('D','F','l','M'), array('$1','$2','$3','$4'), $date_format ); |
8b096f0a |
286 | // to reduce the date calls we retrieve m and w in the same call |
287 | $ret = date('w#m#'. $ret, $stamp ); |
288 | // extract day and month in order to replace later by intl day and month |
c2e29558 |
289 | $aParts = explode('#',$ret); |
e6b76811 |
290 | $ret = str_replace(array('$1','$4','$2','$3',), array(getDayAbrv($aParts[0]), |
15d49d77 |
291 | getMonthAbrv($aParts[1]), |
91e0dccc |
292 | getMonthName($aParts[1]), |
293 | getDayName($aParts[0])), |
294 | $aParts[2]); |
8b096f0a |
295 | return( $ret ); |
0e4ae91a |
296 | } |
d59837cf |
297 | |
8b096f0a |
298 | /** |
299 | * This returns a date of the format "Wed, Oct 29, 2003 9:52 am", |
300 | * or the same in 24H format (depending on the user's settings), |
301 | * and taking localization into accout. |
302 | * |
303 | * @param int stamp the timestamp |
304 | * @return string the long date string |
305 | */ |
0e4ae91a |
306 | function getLongDateString( $stamp ) { |
d59837cf |
307 | |
0e4ae91a |
308 | global $hour_format; |
c2e29558 |
309 | |
913ed9a3 |
310 | if ($stamp == -1) { |
311 | return ''; |
312 | } |
313 | |
0e4ae91a |
314 | if ( $hour_format == SMPREF_TIME_12HR ) { |
315 | $date_format = _("D, F j, Y g:i a"); |
316 | } else { |
3f7e6af3 |
317 | $date_format = _("D, F j, Y H:i"); |
0e4ae91a |
318 | } |
c2e29558 |
319 | |
0e4ae91a |
320 | return( date_intl( $date_format, $stamp ) ); |
0f1835f3 |
321 | |
0e4ae91a |
322 | } |
d205a7bf |
323 | |
8b096f0a |
324 | /** |
325 | * Returns a short representation of the date, |
326 | * taking timezones and localization into account. |
327 | * Depending on user's settings, this string can be |
328 | * of the form: "14:23" or "Jun 14, 2003" depending |
329 | * on whether the stamp is "today" or not. |
330 | * |
331 | * @param int stamp the timestamp |
332 | * @return string the date string |
333 | */ |
0e4ae91a |
334 | function getDateString( $stamp ) { |
d68a3926 |
335 | |
3e3b60e3 |
336 | global $invert_time, $hour_format, $show_full_date; |
dc06f88c |
337 | |
338 | if ( $stamp == -1 ) { |
339 | return ''; |
340 | } |
c2e29558 |
341 | |
0e4ae91a |
342 | $now = time(); |
c2e29558 |
343 | |
0e4ae91a |
344 | $dateZ = date('Z', $now ); |
3f298968 |
345 | |
346 | // FIXME: isn't this obsolete and introduced as a terrible workaround |
c2e29558 |
347 | // for bugs at other places which are fixed a long time ago? |
0e4ae91a |
348 | if ($invert_time) { |
349 | $dateZ = - $dateZ; |
350 | } |
b0d8461b |
351 | |
352 | // calculate when it was midnight and when it will be, |
353 | // in order to display dates differently if they're 'today' |
0e4ae91a |
354 | $midnight = $now - ($now % 86400) - $dateZ; |
b0d8461b |
355 | // this is to correct if after calculations midnight is more than |
356 | // one whole day away. |
357 | if ($now - $midnight > 86400) { |
358 | $midnight += 86400; |
359 | } |
360 | $nextmid = $midnight + 86400; |
c2e29558 |
361 | |
7e27023f |
362 | if (($show_full_date == 1) || ($nextmid < $stamp)) { |
3e3b60e3 |
363 | $date_format = _("M j, Y"); |
364 | } else if ($midnight < $stamp) { |
0e4ae91a |
365 | /* Today */ |
366 | if ( $hour_format == SMPREF_TIME_12HR ) { |
367 | $date_format = _("g:i a"); |
368 | } else { |
3f7e6af3 |
369 | $date_format = _("H:i"); |
0e4ae91a |
370 | } |
371 | } else if ($midnight - 518400 < $stamp) { |
372 | /* This week */ |
373 | if ( $hour_format == SMPREF_TIME_12HR ) { |
374 | $date_format = _("D, g:i a"); |
375 | } else { |
3f7e6af3 |
376 | $date_format = _("D, H:i"); |
0e4ae91a |
377 | } |
378 | } else { |
379 | /* before this week */ |
380 | $date_format = _("M j, Y"); |
381 | } |
c2e29558 |
382 | |
0e4ae91a |
383 | return( date_intl( $date_format, $stamp ) ); |
384 | } |
0f1835f3 |
385 | |
8b096f0a |
386 | /** |
387 | * Decodes a RFC 822 Date-header into a timestamp |
388 | * |
389 | * @param array dateParts the Date-header split by whitespace |
390 | * @return int the timestamp calculated from the header |
391 | */ |
0e4ae91a |
392 | function getTimeStamp($dateParts) { |
4f51df66 |
393 | /* $dateParts[0] == <day of week> Mon, Tue, Wed |
394 | * $dateParts[1] == <day of month> 23 |
395 | * $dateParts[2] == <month> Jan, Feb, Mar |
396 | * $dateParts[3] == <year> 1999 |
397 | * $dateParts[4] == <time> 18:54:23 (HH:MM:SS) |
398 | * $dateParts[5] == <from GMT> +0100 |
399 | * $dateParts[6] == <zone> (EDT) |
400 | * |
401 | * NOTE: In RFC 822, it states that <day of week> is optional. |
402 | * In that case, dateParts[0] would be the <day of month> |
403 | * and everything would be bumped up one. |
404 | */ |
d5c4ae7c |
405 | |
c2e29558 |
406 | /* |
0e4ae91a |
407 | * Simply check to see if the first element in the dateParts |
408 | * array is an integer or not. |
dc06f88c |
409 | * Since the day of week is optional, this check is needed. |
0e4ae91a |
410 | */ |
50457d45 |
411 | if (count($dateParts) <2) { |
2a9b0fad |
412 | return -1; |
c2e29558 |
413 | } else if (count($dateParts) ==3) { |
414 | if (substr_count($dateParts[0],'-') == 2 && |
415 | substr_count($dateParts[1],':') == 2) { |
416 | // dd-Month-yyyy 23:19:05 +0200 |
417 | // redefine the date |
418 | $aDate = explode('-',$dateParts[0]); |
419 | $newDate = array($aDate[0],$aDate[1],$aDate[2],$dateParts[1],$dateParts[2]); |
420 | $dateParts = $newDate; |
421 | } |
50457d45 |
422 | } |
3302d0d4 |
423 | |
d5c4ae7c |
424 | /* remove day of week */ |
425 | if (!is_numeric(trim($dateParts[0]))) { |
426 | $dataParts = array_shift($dateParts); |
0e4ae91a |
427 | } |
d5c4ae7c |
428 | /* calculate timestamp separated from the zone and obs-zone */ |
429 | $stamp = strtotime(implode (' ', array_splice ($dateParts,0,4))); |
430 | if (!isset($dateParts[0])) { |
431 | $dateParts[0] = '+0000'; |
0e4ae91a |
432 | } |
dc06f88c |
433 | |
d5c4ae7c |
434 | if (!preg_match('/^[+-]{1}[0-9]{4}$/',$dateParts[0])) { |
435 | /* zone in obs-zone format */ |
436 | if (preg_match('/\((.+)\)/',$dateParts[0],$regs)) { |
437 | $obs_zone = $regs[1]; |
438 | } else { |
439 | $obs_zone = $dateParts[0]; |
440 | } |
441 | return getGMTSeconds($stamp, $obs_zone); |
442 | } else { |
443 | return getGMTSeconds($stamp, $dateParts[0]); |
0e4ae91a |
444 | } |
0e4ae91a |
445 | } |
5e90d34a |
446 | |
0e4ae91a |
447 | /* I use this function for profiling. Should never be called in |
598294a7 |
448 | actual versions of SquirrelMail released to public. */ |
d205a7bf |
449 | /* |
5e90d34a |
450 | function getmicrotime() { |
451 | $mtime = microtime(); |
b9bfd165 |
452 | $mtime = explode(' ',$mtime); |
5e90d34a |
453 | $mtime = $mtime[1] + $mtime[0]; |
454 | return ($mtime); |
9774bdef |
455 | } |
d205a7bf |
456 | */ |
4f51df66 |
457 | ?> |