platforma/static/filebrowser/uploadify/com/adobe/utils/DateUtil.as

   1 /*
   2   Copyright (c) 2008, Adobe Systems Incorporated
   3   All rights reserved.
   4
   5   Redistribution and use in source and binary forms, with or without
   6   modification, are permitted provided that the following conditions are
   7   met:
   8
   9   * Redistributions of source code must retain the above copyright notice,
  10     this list of conditions and the following disclaimer.
  11
  12   * Redistributions in binary form must reproduce the above copyright
  13     notice, this list of conditions and the following disclaimer in the
  14     documentation and/or other materials provided with the distribution.
  15
  16   * Neither the name of Adobe Systems Incorporated nor the names of its
  17     contributors may be used to endorse or promote products derived from
  18     this software without specific prior written permission.
  19
  20   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
  21   IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  22   THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  23   PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  24   CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  25   EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  26   PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  27   PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
  28   LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
  29   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
  30   SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  31 */
  32
  33 package com.adobe.utils
  34 {
  35         import mx.formatters.DateBase;
  36
  37         /**
  38         *       Class that contains static utility methods for manipulating and working
  39         *       with Dates.
  40         *
  41         *       @langversion ActionScript 3.0
  42         *       @playerversion Flash 9.0
  43         *       @tiptext
  44         */
  45         public class DateUtil
  46         {
  47
  48                 /**
  49                 *       Returns the English Short Month name (3 letters) for the Month that
  50                 *       the Date represents.
  51                 *
  52                 *       @param d The Date instance whose month will be used to retrieve the
  53                 *       short month name.
  54                 *
  55                 *       @return An English 3 Letter Month abbreviation.
  56                 *
  57                 *       @langversion ActionScript 3.0
  58                 *       @playerversion Flash 9.0
  59                 *       @tiptext
  60                 *
  61                 *       @see SHORT_MONTH
  62                 */
  63                 public static function getShortMonthName(d:Date):String
  64                 {
  65                         return DateBase.monthNamesShort[d.getMonth()];
  66                 }
  67
  68                 /**
  69                 *       Returns the index of the month that the short month name string
  70                 *       represents.
  71                 *
  72                 *       @param m The 3 letter abbreviation representing a short month name.
  73                 *
  74                 *       @param Optional parameter indicating whether the search should be case
  75                 *       sensitive
  76                 *
  77                 *       @return A int that represents that month represented by the specifed
  78                 *       short name.
  79                 *
  80                 *       @langversion ActionScript 3.0
  81                 *       @playerversion Flash 9.0
  82                 *       @tiptext
  83                 *
  84                 *       @see SHORT_MONTH
  85                 */
  86                 public static function getShortMonthIndex(m:String):int
  87                 {
  88                         return DateBase.monthNamesShort.indexOf(m);
  89                 }
  90
  91                 /**
  92                 *       Returns the English full Month name for the Month that
  93                 *       the Date represents.
  94                 *
  95                 *       @param d The Date instance whose month will be used to retrieve the
  96                 *       full month name.
  97                 *
  98                 *       @return An English full month name.
  99                 *
 100                 *       @langversion ActionScript 3.0
 101                 *       @playerversion Flash 9.0
 102                 *       @tiptext
 103                 *
 104                 *       @see FULL_MONTH
 105                 */
 106                 public static function getFullMonthName(d:Date):String
 107                 {
 108                         return DateBase.monthNamesLong[d.getMonth()];
 109                 }
 110
 111                 /**
 112                 *       Returns the index of the month that the full month name string
 113                 *       represents.
 114                 *
 115                 *       @param m A full month name.
 116                 *
 117                 *       @return A int that represents that month represented by the specifed
 118                 *       full month name.
 119                 *
 120                 *       @langversion ActionScript 3.0
 121                 *       @playerversion Flash 9.0
 122                 *       @tiptext
 123                 *
 124                 *       @see FULL_MONTH
 125                 */
 126                 public static function getFullMonthIndex(m:String):int
 127                 {
 128                         return DateBase.monthNamesLong.indexOf(m);
 129                 }
 130
 131                 /**
 132                 *       Returns the English Short Day name (3 letters) for the day that
 133                 *       the Date represents.
 134                 *
 135                 *       @param d The Date instance whose day will be used to retrieve the
 136                 *       short day name.
 137                 *
 138                 *       @return An English 3 Letter day abbreviation.
 139                 *
 140                 *       @langversion ActionScript 3.0
 141                 *       @playerversion Flash 9.0
 142                 *       @tiptext
 143                 *
 144                 *       @see SHORT_DAY
 145                 */
 146                 public static function getShortDayName(d:Date):String
 147                 {
 148                         return DateBase.dayNamesShort[d.getDay()];
 149                 }
 150
 151                 /**
 152                 *       Returns the index of the day that the short day name string
 153                 *       represents.
 154                 *
 155                 *       @param m A short day name.
 156                 *
 157                 *       @return A int that represents that short day represented by the specifed
 158                 *       full month name.
 159                 *
 160                 *       @langversion ActionScript 3.0
 161                 *       @playerversion Flash 9.0
 162                 *       @tiptext
 163                 *
 164                 *       @see SHORT_DAY
 165                 */
 166                 public static function getShortDayIndex(d:String):int
 167                 {
 168                         return DateBase.dayNamesShort.indexOf(d);
 169                 }
 170
 171                 /**
 172                 *       Returns the English full day name for the day that
 173                 *       the Date represents.
 174                 *
 175                 *       @param d The Date instance whose day will be used to retrieve the
 176                 *       full day name.
 177                 *
 178                 *       @return An English full day name.
 179                 *
 180                 *       @langversion ActionScript 3.0
 181                 *       @playerversion Flash 9.0
 182                 *       @tiptext
 183                 *
 184                 *       @see FULL_DAY
 185                 */
 186                 public static function getFullDayName(d:Date):String
 187                 {
 188                         return DateBase.dayNamesLong[d.getDay()];
 189                 }
 190
 191                 /**
 192                 *       Returns the index of the day that the full day name string
 193                 *       represents.
 194                 *
 195                 *       @param m A full day name.
 196                 *
 197                 *       @return A int that represents that full day represented by the specifed
 198                 *       full month name.
 199                 *
 200                 *       @langversion ActionScript 3.0
 201                 *       @playerversion Flash 9.0
 202                 *       @tiptext
 203                 *
 204                 *       @see FULL_DAY
 205                 */
 206                 public static function getFullDayIndex(d:String):int
 207                 {
 208                         return DateBase.dayNamesLong.indexOf(d);
 209                 }
 210
 211                 /**
 212                 *       Returns a two digit representation of the year represented by the
 213                 *       specified date.
 214                 *
 215                 *       @param d The Date instance whose year will be used to generate a two
 216                 *       digit string representation of the year.
 217                 *
 218                 *       @return A string that contains a 2 digit representation of the year.
 219                 *       Single digits will be padded with 0.
 220                 *
 221                 *       @langversion ActionScript 3.0
 222                 *       @playerversion Flash 9.0
 223                 *       @tiptext
 224                 */
 225                 public static function getShortYear(d:Date):String
 226                 {
 227                         var dStr:String = String(d.getFullYear());
 228
 229                         if(dStr.length < 3)
 230                         {
 231                                 return dStr;
 232                         }
 233
 234                         return (dStr.substr(dStr.length - 2));
 235                 }
 236
 237                 /**
 238                 *       Compares two dates and returns an integer depending on their relationship.
 239                 *
 240                 *       Returns -1 if d1 is greater than d2.
 241                 *       Returns 1 if d2 is greater than d1.
 242                 *       Returns 0 if both dates are equal.
 243                 *
 244                 *       @param d1 The date that will be compared to the second date.
 245                 *       @param d2 The date that will be compared to the first date.
 246                 *
 247                 *       @return An int indicating how the two dates compare.
 248                 *
 249                 *       @langversion ActionScript 3.0
 250                 *       @playerversion Flash 9.0
 251                 *       @tiptext
 252                 */
 253                 public static function compareDates(d1:Date, d2:Date):int
 254                 {
 255                         var d1ms:Number = d1.getTime();
 256                         var d2ms:Number = d2.getTime();
 257
 258                         if(d1ms > d2ms)
 259                         {
 260                                 return -1;
 261                         }
 262                         else if(d1ms < d2ms)
 263                         {
 264                                 return 1;
 265                         }
 266                         else
 267                         {
 268                                 return 0;
 269                         }
 270                 }
 271
 272                 /**
 273                 *       Returns a short hour (0 - 12) represented by the specified date.
 274                 *
 275                 *       If the hour is less than 12 (0 - 11 AM) then the hour will be returned.
 276                 *
 277                 *       If the hour is greater than 12 (12 - 23 PM) then the hour minus 12
 278                 *       will be returned.
 279                 *
 280                 *       @param d1 The Date from which to generate the short hour
 281                 *
 282                 *       @return An int between 0 and 13 ( 1 - 12 ) representing the short hour.
 283                 *
 284                 *       @langversion ActionScript 3.0
 285                 *       @playerversion Flash 9.0
 286                 *       @tiptext
 287                 */
 288                 public static function getShortHour(d:Date):int
 289                 {
 290                         var h:int = d.hours;
 291
 292                         if(h == 0 || h == 12)
 293                         {
 294                                 return 12;
 295                         }
 296                         else if(h > 12)
 297                         {
 298                                 return h - 12;
 299                         }
 300                         else
 301                         {
 302                                 return h;
 303                         }
 304                 }
 305
 306                 /**
 307                 *       Returns a string indicating whether the date represents a time in the
 308                 *       ante meridiem (AM) or post meridiem (PM).
 309                 *
 310                 *       If the hour is less than 12 then "AM" will be returned.
 311                 *
 312                 *       If the hour is greater than 12 then "PM" will be returned.
 313                 *
 314                 *       @param d1 The Date from which to generate the 12 hour clock indicator.
 315                 *
 316                 *       @return A String ("AM" or "PM") indicating which half of the day the
 317                 *       hour represents.
 318                 *
 319                 *       @langversion ActionScript 3.0
 320                 *       @playerversion Flash 9.0
 321                 *       @tiptext
 322                 */
 323                 public static function getAMPM(d:Date):String
 324                 {
 325                         return (d.hours > 11)? "PM" : "AM";
 326                 }
 327
 328                 /**
 329                 * Parses dates that conform to RFC822 into Date objects. This method also
 330                 * supports four-digit years (not supported in RFC822), but two-digit years
 331                 * (referring to the 20th century) are fine, too.
 332                 *
 333                 * This function is useful for parsing RSS .91, .92, and 2.0 dates.
 334                 *
 335                 * @param str
 336                 *
 337                 * @returns
 338                 *
 339                 * @langversion ActionScript 3.0
 340                 * @playerversion Flash 9.0
 341                 * @tiptext
 342                 *
 343                 * @see http://asg.web.cmu.edu/rfc/rfc822.html
 344                 */
 345                 public static function parseRFC822(str:String):Date
 346                 {
 347             var finalDate:Date;
 348                         try
 349                         {
 350                                 var dateParts:Array = str.split(" ");
 351                                 var day:String = null;
 352
 353                                 if (dateParts[0].search(/\d/) == -1)
 354                                 {
 355                                         day = dateParts.shift().replace(/\W/, "");
 356                                 }
 357
 358                                 var date:Number = Number(dateParts.shift());
 359                                 var month:Number = Number(DateUtil.getShortMonthIndex(dateParts.shift()));
 360                                 var year:Number = Number(dateParts.shift());
 361                                 var timeParts:Array = dateParts.shift().split(":");
 362                                 var hour:Number = int(timeParts.shift());
 363                                 var minute:Number = int(timeParts.shift());
 364                                 var second:Number = (timeParts.length > 0) ? int(timeParts.shift()): 0;
 365
 366                                 var milliseconds:Number = Date.UTC(year, month, date, hour, minute, second, 0);
 367
 368                                 var timezone:String = dateParts.shift();
 369                                 var offset:Number = 0;
 370
 371                                 if (timezone.search(/\d/) == -1)
 372                                 {
 373                                         switch(timezone)
 374                                         {
 375                                                 case "UT":
 376                                                         offset = 0;
 377                                                         break;
 378                                                 case "UTC":
 379                                                         offset = 0;
 380                                                         break;
 381                                                 case "GMT":
 382                                                         offset = 0;
 383                                                         break;
 384                                                 case "EST":
 385                                                         offset = (-5 * 3600000);
 386                                                         break;
 387                                                 case "EDT":
 388                                                         offset = (-4 * 3600000);
 389                                                         break;
 390                                                 case "CST":
 391                                                         offset = (-6 * 3600000);
 392                                                         break;
 393                                                 case "CDT":
 394                                                         offset = (-5 * 3600000);
 395                                                         break;
 396                                                 case "MST":
 397                                                         offset = (-7 * 3600000);
 398                                                         break;
 399                                                 case "MDT":
 400                                                         offset = (-6 * 3600000);
 401                                                         break;
 402                                                 case "PST":
 403                                                         offset = (-8 * 3600000);
 404                                                         break;
 405                                                 case "PDT":
 406                                                         offset = (-7 * 3600000);
 407                                                         break;
 408                                                 case "Z":
 409                                                         offset = 0;
 410                                                         break;
 411                                                 case "A":
 412                                                         offset = (-1 * 3600000);
 413                                                         break;
 414                                                 case "M":
 415                                                         offset = (-12 * 3600000);
 416                                                         break;
 417                                                 case "N":
 418                                                         offset = (1 * 3600000);
 419                                                         break;
 420                                                 case "Y":
 421                                                         offset = (12 * 3600000);
 422                                                         break;
 423                                                 default:
 424                                                         offset = 0;
 425                                         }
 426                                 }
 427                                 else
 428                                 {
 429                                         var multiplier:Number = 1;
 430                                         var oHours:Number = 0;
 431                                         var oMinutes:Number = 0;
 432                                         if (timezone.length != 4)
 433                                         {
 434                                                 if (timezone.charAt(0) == "-")
 435                                                 {
 436                                                         multiplier = -1;
 437                                                 }
 438                                                 timezone = timezone.substr(1, 4);
 439                                         }
 440                                         oHours = Number(timezone.substr(0, 2));
 441                                         oMinutes = Number(timezone.substr(2, 2));
 442                                         offset = (((oHours * 3600000) + (oMinutes * 60000)) * multiplier);
 443                                 }
 444
 445                                 finalDate = new Date(milliseconds - offset);
 446
 447                                 if (finalDate.toString() == "Invalid Date")
 448                                 {
 449                                         throw new Error("This date does not conform to RFC822.");
 450                                 }
 451                         }
 452                         catch (e:Error)
 453                         {
 454                                 var eStr:String = "Unable to parse the string [" +str+ "] into a date. ";
 455                                 eStr += "The internal error was: " + e.toString();
 456                                 throw new Error(eStr);
 457                         }
 458             return finalDate;
 459                 }
 460
 461                 /**
 462                 * Returns a date string formatted according to RFC822.
 463                 *
 464                 * @param d
 465                 *
 466                 * @returns
 467                 *
 468                 * @langversion ActionScript 3.0
 469                 * @playerversion Flash 9.0
 470                 * @tiptext
 471                 *
 472                 * @see http://asg.web.cmu.edu/rfc/rfc822.html
 473                 */
 474                 public static function toRFC822(d:Date):String
 475                 {
 476                         var date:Number = d.getUTCDate();
 477                         var hours:Number = d.getUTCHours();
 478                         var minutes:Number = d.getUTCMinutes();
 479                         var seconds:Number = d.getUTCSeconds();
 480                         var sb:String = new String();
 481                         sb += DateBase.dayNamesShort[d.getUTCDay()];
 482                         sb += ", ";
 483
 484                         if (date < 10)
 485                         {
 486                                 sb += "0";
 487                         }
 488                         sb += date;
 489                         sb += " ";
 490                         //sb += DateUtil.SHORT_MONTH[d.getUTCMonth()];
 491                         sb += DateBase.monthNamesShort[d.getUTCMonth()];
 492                         sb += " ";
 493                         sb += d.getUTCFullYear();
 494                         sb += " ";
 495                         if (hours < 10)
 496                         {
 497                                 sb += "0";
 498                         }
 499                         sb += hours;
 500                         sb += ":";
 501                         if (minutes < 10)
 502                         {
 503                                 sb += "0";
 504                         }
 505                         sb += minutes;
 506                         sb += ":";
 507                         if (seconds < 10)
 508                         {
 509                                 sb += "0";
 510                         }
 511                         sb += seconds;
 512                         sb += " GMT";
 513                         return sb;
 514                 }
 515
 516                 /**
 517                 * Parses dates that conform to the W3C Date-time Format into Date objects.
 518                 *
 519                 * This function is useful for parsing RSS 1.0 and Atom 1.0 dates.
 520                 *
 521                 * @param str
 522                 *
 523                 * @returns
 524                 *
 525                 * @langversion ActionScript 3.0
 526                 * @playerversion Flash 9.0
 527                 * @tiptext
 528                 *
 529                 * @see http://www.w3.org/TR/NOTE-datetime
 530                 */
 531                 public static function parseW3CDTF(str:String):Date
 532                 {
 533             var finalDate:Date;
 534                         try
 535                         {
 536                                 var dateStr:String = str.substring(0, str.indexOf("T"));
 537                                 var timeStr:String = str.substring(str.indexOf("T")+1, str.length);
 538                                 var dateArr:Array = dateStr.split("-");
 539                                 var year:Number = Number(dateArr.shift());
 540                                 var month:Number = Number(dateArr.shift());
 541                                 var date:Number = Number(dateArr.shift());
 542
 543                                 var multiplier:Number;
 544                                 var offsetHours:Number;
 545                                 var offsetMinutes:Number;
 546                                 var offsetStr:String;
 547
 548                                 if (timeStr.indexOf("Z") != -1)
 549                                 {
 550                                         multiplier = 1;
 551                                         offsetHours = 0;
 552                                         offsetMinutes = 0;
 553                                         timeStr = timeStr.replace("Z", "");
 554                                 }
 555                                 else if (timeStr.indexOf("+") != -1)
 556                                 {
 557                                         multiplier = 1;
 558                                         offsetStr = timeStr.substring(timeStr.indexOf("+")+1, timeStr.length);
 559                                         offsetHours = Number(offsetStr.substring(0, offsetStr.indexOf(":")));
 560                                         offsetMinutes = Number(offsetStr.substring(offsetStr.indexOf(":")+1, offsetStr.length));
 561                                         timeStr = timeStr.substring(0, timeStr.indexOf("+"));
 562                                 }
 563                                 else // offset is -
 564                                 {
 565                                         multiplier = -1;
 566                                         offsetStr = timeStr.substring(timeStr.indexOf("-")+1, timeStr.length);
 567                                         offsetHours = Number(offsetStr.substring(0, offsetStr.indexOf(":")));
 568                                         offsetMinutes = Number(offsetStr.substring(offsetStr.indexOf(":")+1, offsetStr.length));
 569                                         timeStr = timeStr.substring(0, timeStr.indexOf("-"));
 570                                 }
 571                                 var timeArr:Array = timeStr.split(":");
 572                                 var hour:Number = Number(timeArr.shift());
 573                                 var minutes:Number = Number(timeArr.shift());
 574                                 var secondsArr:Array = (timeArr.length > 0) ? String(timeArr.shift()).split(".") : null;
 575                                 var seconds:Number = (secondsArr != null && secondsArr.length > 0) ? Number(secondsArr.shift()) : 0;
 576                                 var milliseconds:Number = (secondsArr != null && secondsArr.length > 0) ? Number(secondsArr.shift()) : 0;
 577                                 var utc:Number = Date.UTC(year, month-1, date, hour, minutes, seconds, milliseconds);
 578                                 var offset:Number = (((offsetHours * 3600000) + (offsetMinutes * 60000)) * multiplier);
 579                                 finalDate = new Date(utc - offset);
 580
 581                                 if (finalDate.toString() == "Invalid Date")
 582                                 {
 583                                         throw new Error("This date does not conform to W3CDTF.");
 584                                 }
 585                         }
 586                         catch (e:Error)
 587                         {
 588                                 var eStr:String = "Unable to parse the string [" +str+ "] into a date. ";
 589                                 eStr += "The internal error was: " + e.toString();
 590                                 throw new Error(eStr);
 591                         }
 592             return finalDate;
 593                 }
 594
 595                 /**
 596                 * Returns a date string formatted according to W3CDTF.
 597                 *
 598                 * @param d
 599                 * @param includeMilliseconds Determines whether to include the
 600                 * milliseconds value (if any) in the formatted string.
 601                 *
 602                 * @returns
 603                 *
 604                 * @langversion ActionScript 3.0
 605                 * @playerversion Flash 9.0
 606                 * @tiptext
 607                 *
 608                 * @see http://www.w3.org/TR/NOTE-datetime
 609                 */
 610                 public static function toW3CDTF(d:Date,includeMilliseconds:Boolean=false):String
 611                 {
 612                         var date:Number = d.getUTCDate();
 613                         var month:Number = d.getUTCMonth();
 614                         var hours:Number = d.getUTCHours();
 615                         var minutes:Number = d.getUTCMinutes();
 616                         var seconds:Number = d.getUTCSeconds();
 617                         var milliseconds:Number = d.getUTCMilliseconds();
 618                         var sb:String = new String();
 619
 620                         sb += d.getUTCFullYear();
 621                         sb += "-";
 622
 623                         //thanks to "dom" who sent in a fix for the line below
 624                         if (month + 1 < 10)
 625                         {
 626                                 sb += "0";
 627                         }
 628                         sb += month + 1;
 629                         sb += "-";
 630                         if (date < 10)
 631                         {
 632                                 sb += "0";
 633                         }
 634                         sb += date;
 635                         sb += "T";
 636                         if (hours < 10)
 637                         {
 638                                 sb += "0";
 639                         }
 640                         sb += hours;
 641                         sb += ":";
 642                         if (minutes < 10)
 643                         {
 644                                 sb += "0";
 645                         }
 646                         sb += minutes;
 647                         sb += ":";
 648                         if (seconds < 10)
 649                         {
 650                                 sb += "0";
 651                         }
 652                         sb += seconds;
 653                         if (includeMilliseconds && milliseconds > 0)
 654                         {
 655                                 sb += ".";
 656                                 sb += milliseconds;
 657                         }
 658                         sb += "-00:00";
 659                         return sb;
 660                 }
 661
 662                 /**
 663                  * Converts a date into just after midnight.
 664                  */
 665                 public static function makeMorning(d:Date):Date
 666                 {
 667                         var d:Date = new Date(d.time);
 668                         d.hours = 0;
 669             d.minutes = 0;
 670             d.seconds = 0;
 671             d.milliseconds = 0;
 672             return d;
 673                 }
 674
 675                 /**
 676                  * Converts a date into just befor midnight.
 677                  */
 678                 public static function makeNight(d:Date):Date
 679                 {
 680                         var d:Date = new Date(d.time);
 681                         d.hours = 23;
 682             d.minutes = 59;
 683             d.seconds = 59;
 684             d.milliseconds = 999;
 685             return d;
 686                 }
 687
 688                 /**
 689                  * Sort of converts a date into UTC.
 690                  */
 691                 public static function getUTCDate(d:Date):Date
 692                 {
 693                         var nd:Date = new Date();
 694                         var offset:Number = d.getTimezoneOffset() * 60 * 1000;
 695                         nd.setTime(d.getTime() + offset);
 696                         return nd;
 697                 }
 698         }
 699 }