| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * date.php |
| 5 | * |
| 6 | * Copyright (c) 1999-2003 The SquirrelMail Project Team |
| 7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
| 8 | * |
| 9 | * Takes a date and parses it into a usable format. The form that a |
| 10 | * date SHOULD arrive in is: |
| 11 | * <Tue,> 29 Jun 1999 09:52:11 -0500 (EDT) |
| 12 | * (as specified in RFC 822) -- 'Tue' is optional |
| 13 | * |
| 14 | * $Id$ |
| 15 | */ |
| 16 | |
| 17 | require_once(SM_PATH . 'functions/constants.php'); |
| 18 | |
| 19 | /* corrects a time stamp to be the local time */ |
| 20 | function getGMTSeconds($stamp, $tzc) { |
| 21 | /* date couldn't be parsed */ |
| 22 | if ($stamp == -1) { |
| 23 | return -1; |
| 24 | } |
| 25 | /* timezone correction, expressed as `shhmm' */ |
| 26 | switch($tzc) |
| 27 | { |
| 28 | case 'Pacific': |
| 29 | case 'PST': |
| 30 | $tzc = '-0800'; |
| 31 | break; |
| 32 | case 'Mountain': |
| 33 | case 'MST': |
| 34 | case 'PDT': |
| 35 | $tzc = '-0700'; |
| 36 | break; |
| 37 | case 'Central': |
| 38 | case 'CST': |
| 39 | case 'MDT': |
| 40 | $tzc = '-0600'; |
| 41 | break; |
| 42 | case 'Eastern': |
| 43 | case 'EST': |
| 44 | case 'CDT': |
| 45 | $tzc = '-0500'; |
| 46 | break; |
| 47 | case 'EDT': |
| 48 | $tzc = '-0400'; |
| 49 | break; |
| 50 | case 'GMT': |
| 51 | $tzc = '+0000'; |
| 52 | break; |
| 53 | case 'BST': |
| 54 | case 'MET': |
| 55 | case 'CET': |
| 56 | $tzc = '+0100'; |
| 57 | break; |
| 58 | case 'EET': |
| 59 | case 'IST': |
| 60 | case 'MET DST': |
| 61 | case 'METDST': |
| 62 | $tzc = '+0200'; |
| 63 | break; |
| 64 | case 'HKT': |
| 65 | $tzc = '+0800'; |
| 66 | break; |
| 67 | case 'JST': |
| 68 | case 'KST': |
| 69 | $tzc = '+0900'; |
| 70 | break; |
| 71 | } |
| 72 | $neg = false; |
| 73 | if (substr($tzc, 0, 1) == '-') { |
| 74 | $neg = true; |
| 75 | } else if (substr($tzc, 0, 1) != '+') { |
| 76 | $tzc = '+'.$tzc; |
| 77 | } |
| 78 | $hh = substr($tzc,1,2); |
| 79 | $mm = substr($tzc,3,2); |
| 80 | $iTzc = ($hh * 60 + $mm) * 60; |
| 81 | if ($neg) $iTzc = -1 * (int) $iTzc; |
| 82 | /* stamp in gmt */ |
| 83 | $stamp -= $iTzc; |
| 84 | /** now find what the server is at **/ |
| 85 | $current = date('Z', time()); |
| 86 | /* stamp in local timezone */ |
| 87 | $stamp += $current; |
| 88 | |
| 89 | return $stamp; |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | Switch system has been intentionaly chosen for the |
| 94 | internationalization of month and day names. The reason |
| 95 | is to make sure that _("") strings will go into the |
| 96 | main po. |
| 97 | **/ |
| 98 | |
| 99 | function getDayName( $day_number ) { |
| 100 | |
| 101 | switch( $day_number ) { |
| 102 | case 0: |
| 103 | $ret = _("Sunday"); |
| 104 | break; |
| 105 | case 1: |
| 106 | $ret = _("Monday"); |
| 107 | break; |
| 108 | case 2: |
| 109 | $ret = _("Tuesday"); |
| 110 | break; |
| 111 | case 3: |
| 112 | $ret = _("Wednesday"); |
| 113 | break; |
| 114 | case 4: |
| 115 | $ret = _("Thursday"); |
| 116 | break; |
| 117 | case 5: |
| 118 | $ret = _("Friday"); |
| 119 | break; |
| 120 | case 6: |
| 121 | $ret = _("Saturday"); |
| 122 | break; |
| 123 | default: |
| 124 | $ret = ''; |
| 125 | } |
| 126 | return( $ret ); |
| 127 | } |
| 128 | |
| 129 | function getMonthName( $month_number ) { |
| 130 | switch( $month_number ) { |
| 131 | case '01': |
| 132 | $ret = _("January"); |
| 133 | break; |
| 134 | case '02': |
| 135 | $ret = _("February"); |
| 136 | break; |
| 137 | case '03': |
| 138 | $ret = _("March"); |
| 139 | break; |
| 140 | case '04': |
| 141 | $ret = _("April"); |
| 142 | break; |
| 143 | case '05': |
| 144 | $ret = _("May"); |
| 145 | break; |
| 146 | case '06': |
| 147 | $ret = _("June"); |
| 148 | break; |
| 149 | case '07': |
| 150 | $ret = _("July"); |
| 151 | break; |
| 152 | case '08': |
| 153 | $ret = _("August"); |
| 154 | break; |
| 155 | case '09': |
| 156 | $ret = _("September"); |
| 157 | break; |
| 158 | case '10': |
| 159 | $ret = _("October"); |
| 160 | break; |
| 161 | case '11': |
| 162 | $ret = _("November"); |
| 163 | break; |
| 164 | case '12': |
| 165 | $ret = _("December"); |
| 166 | break; |
| 167 | default: |
| 168 | $ret = ''; |
| 169 | } |
| 170 | return( $ret ); |
| 171 | } |
| 172 | |
| 173 | function date_intl( $date_format, $stamp ) { |
| 174 | |
| 175 | $ret = str_replace( 'D', '$1', $date_format ); |
| 176 | $ret = str_replace( 'F', '$2', $ret ); |
| 177 | $ret = str_replace( 'l', '$4', $ret ); |
| 178 | $ret = str_replace( 'M', '$5', $ret ); |
| 179 | $ret = date( '$3'. $ret . '$3', $stamp ); // Workaround for a PHP 4.0.4 problem |
| 180 | $ret = str_replace( '$1', substr( getDayName( date( 'w', $stamp ) ), 0, 3 ), $ret ); |
| 181 | $ret = str_replace( '$5', substr( getMonthName( date( 'm', $stamp ) ), 0, 3 ), $ret ); |
| 182 | $ret = str_replace( '$2', getMonthName( date( 'm', $stamp ) ), $ret ); |
| 183 | $ret = str_replace( '$4', getDayName( date( 'w', $stamp ) ), $ret ); |
| 184 | $ret = str_replace( '$3', '', $ret ); |
| 185 | |
| 186 | return( $ret ); |
| 187 | } |
| 188 | |
| 189 | function getLongDateString( $stamp ) { |
| 190 | |
| 191 | global $hour_format; |
| 192 | |
| 193 | if ($stamp == -1) { |
| 194 | return ''; |
| 195 | } |
| 196 | |
| 197 | if ( $hour_format == SMPREF_TIME_12HR ) { |
| 198 | $date_format = _("D, F j, Y g:i a"); |
| 199 | } else { |
| 200 | $date_format = _("D, F j, Y G:i"); |
| 201 | } |
| 202 | |
| 203 | return( date_intl( $date_format, $stamp ) ); |
| 204 | |
| 205 | } |
| 206 | |
| 207 | function getDateString( $stamp ) { |
| 208 | |
| 209 | global $invert_time, $hour_format; |
| 210 | |
| 211 | if ( $stamp == -1 ) { |
| 212 | return ''; |
| 213 | } |
| 214 | |
| 215 | $now = time(); |
| 216 | |
| 217 | $dateZ = date('Z', $now ); |
| 218 | if ($invert_time) { |
| 219 | $dateZ = - $dateZ; |
| 220 | } |
| 221 | $midnight = $now - ($now % 86400) - $dateZ; |
| 222 | |
| 223 | if ($midnight < $stamp) { |
| 224 | /* Today */ |
| 225 | if ( $hour_format == SMPREF_TIME_12HR ) { |
| 226 | $date_format = _("g:i a"); |
| 227 | } else { |
| 228 | $date_format = _("G:i"); |
| 229 | } |
| 230 | } else if ($midnight - 518400 < $stamp) { |
| 231 | /* This week */ |
| 232 | if ( $hour_format == SMPREF_TIME_12HR ) { |
| 233 | $date_format = _("D, g:i a"); |
| 234 | } else { |
| 235 | $date_format = _("D, G:i"); |
| 236 | } |
| 237 | } else { |
| 238 | /* before this week */ |
| 239 | $date_format = _("M j, Y"); |
| 240 | } |
| 241 | |
| 242 | return( date_intl( $date_format, $stamp ) ); |
| 243 | } |
| 244 | |
| 245 | function getTimeStamp($dateParts) { |
| 246 | /** $dateParts[0] == <day of week> Mon, Tue, Wed |
| 247 | ** $dateParts[1] == <day of month> 23 |
| 248 | ** $dateParts[2] == <month> Jan, Feb, Mar |
| 249 | ** $dateParts[3] == <year> 1999 |
| 250 | ** $dateParts[4] == <time> 18:54:23 (HH:MM:SS) |
| 251 | ** $dateParts[5] == <from GMT> +0100 |
| 252 | ** $dateParts[6] == <zone> (EDT) |
| 253 | ** |
| 254 | ** NOTE: In RFC 822, it states that <day of week> is optional. |
| 255 | ** In that case, dateParts[0] would be the <day of month> |
| 256 | ** and everything would be bumped up one. |
| 257 | **/ |
| 258 | |
| 259 | /* |
| 260 | * Simply check to see if the first element in the dateParts |
| 261 | * array is an integer or not. |
| 262 | * Since the day of week is optional, this check is needed. |
| 263 | */ |
| 264 | if (count($dateParts) <2) { |
| 265 | return 0; |
| 266 | } |
| 267 | |
| 268 | /* remove day of week */ |
| 269 | if (!is_numeric(trim($dateParts[0]))) { |
| 270 | $dataParts = array_shift($dateParts); |
| 271 | } |
| 272 | /* calculate timestamp separated from the zone and obs-zone */ |
| 273 | $stamp = strtotime(implode (' ', array_splice ($dateParts,0,4))); |
| 274 | if (!isset($dateParts[0])) { |
| 275 | $dateParts[0] = '+0000'; |
| 276 | } |
| 277 | |
| 278 | if (!preg_match('/^[+-]{1}[0-9]{4}$/',$dateParts[0])) { |
| 279 | /* zone in obs-zone format */ |
| 280 | if (preg_match('/\((.+)\)/',$dateParts[0],$regs)) { |
| 281 | $obs_zone = $regs[1]; |
| 282 | } else { |
| 283 | $obs_zone = $dateParts[0]; |
| 284 | } |
| 285 | return getGMTSeconds($stamp, $obs_zone); |
| 286 | } else { |
| 287 | return getGMTSeconds($stamp, $dateParts[0]); |
| 288 | } |
| 289 | } |
| 290 | |
| 291 | /* I use this function for profiling. Should never be called in |
| 292 | actual versions of squirrelmail released to public. */ |
| 293 | /* |
| 294 | function getmicrotime() { |
| 295 | $mtime = microtime(); |
| 296 | $mtime = explode(' ',$mtime); |
| 297 | $mtime = $mtime[1] + $mtime[0]; |
| 298 | return ($mtime); |
| 299 | } |
| 300 | */ |
| 301 | ?> |