290 lines
10 KiB
JavaScript
290 lines
10 KiB
JavaScript
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dojo.provide("dojox.date.posix");
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dojo.require("dojo.date");
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dojo.require("dojo.date.locale");
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dojo.require("dojo.string");
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dojox.date.posix.strftime = function(/*Date*/dateObject, /*String*/format, /*String?*/locale){
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//
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// summary:
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// Formats the date object using the specifications of the POSIX strftime function
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//
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// description:
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// see http://www.opengroup.org/onlinepubs/007908799/xsh/strftime.html
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// zero pad
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var padChar = null;
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var _ = function(s, n){
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return dojo.string.pad(s, n || 2, padChar || "0");
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};
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var bundle = dojo.date.locale._getGregorianBundle(locale);
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var $ = function(property){
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switch(property){
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case "a": // abbreviated weekday name according to the current locale
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return dojo.date.locale.getNames('days', 'abbr', 'format', locale)[dateObject.getDay()];
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case "A": // full weekday name according to the current locale
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return dojo.date.locale.getNames('days', 'wide', 'format', locale)[dateObject.getDay()];
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case "b":
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case "h": // abbreviated month name according to the current locale
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return dojo.date.locale.getNames('months', 'abbr', 'format', locale)[dateObject.getMonth()];
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case "B": // full month name according to the current locale
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return dojo.date.locale.getNames('months', 'wide', 'format', locale)[dateObject.getMonth()];
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case "c": // preferred date and time representation for the current
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// locale
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return dojo.date.locale.format(dateObject, {formatLength: 'full', locale: locale});
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case "C": // century number (the year divided by 100 and truncated
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// to an integer, range 00 to 99)
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return _(Math.floor(dateObject.getFullYear()/100));
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case "d": // day of the month as a decimal number (range 01 to 31)
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return _(dateObject.getDate());
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case "D": // same as %m/%d/%y
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return $("m") + "/" + $("d") + "/" + $("y");
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case "e": // day of the month as a decimal number, a single digit is
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// preceded by a space (range ' 1' to '31')
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if(padChar == null){ padChar = " "; }
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return _(dateObject.getDate());
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case "f": // month as a decimal number, a single digit is
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// preceded by a space (range ' 1' to '12')
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if(padChar == null){ padChar = " "; }
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return _(dateObject.getMonth()+1);
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case "g": // like %G, but without the century.
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break;
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case "G": // The 4-digit year corresponding to the ISO week number
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// (see %V). This has the same format and value as %Y,
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// except that if the ISO week number belongs to the
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// previous or next year, that year is used instead.
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dojo.unimplemented("unimplemented modifier 'G'");
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break;
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case "F": // same as %Y-%m-%d
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return $("Y") + "-" + $("m") + "-" + $("d");
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case "H": // hour as a decimal number using a 24-hour clock (range
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// 00 to 23)
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return _(dateObject.getHours());
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case "I": // hour as a decimal number using a 12-hour clock (range
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// 01 to 12)
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return _(dateObject.getHours() % 12 || 12);
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case "j": // day of the year as a decimal number (range 001 to 366)
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return _(dojo.date.locale._getDayOfYear(dateObject), 3);
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case "k": // Hour as a decimal number using a 24-hour clock (range
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// 0 to 23 (space-padded))
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if(padChar == null){ padChar = " "; }
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return _(dateObject.getHours());
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case "l": // Hour as a decimal number using a 12-hour clock (range
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// 1 to 12 (space-padded))
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if(padChar == null){ padChar = " "; }
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return _(dateObject.getHours() % 12 || 12);
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case "m": // month as a decimal number (range 01 to 12)
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return _(dateObject.getMonth() + 1);
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case "M": // minute as a decimal number
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return _(dateObject.getMinutes());
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case "n":
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return "\n";
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case "p": // either `am' or `pm' according to the given time value,
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// or the corresponding strings for the current locale
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return bundle[dateObject.getHours() < 12 ? "am" : "pm"];
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case "r": // time in a.m. and p.m. notation
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return $("I") + ":" + $("M") + ":" + $("S") + " " + $("p");
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case "R": // time in 24 hour notation
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return $("H") + ":" + $("M");
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case "S": // second as a decimal number
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return _(dateObject.getSeconds());
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case "t":
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return "\t";
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case "T": // current time, equal to %H:%M:%S
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return $("H") + ":" + $("M") + ":" + $("S");
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case "u": // weekday as a decimal number [1,7], with 1 representing
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// Monday
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return String(dateObject.getDay() || 7);
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case "U": // week number of the current year as a decimal number,
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// starting with the first Sunday as the first day of the
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// first week
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return _(dojo.date.locale._getWeekOfYear(dateObject));
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case "V": // week number of the year (Monday as the first day of the
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// week) as a decimal number [01,53]. If the week containing
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// 1 January has four or more days in the new year, then it
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// is considered week 1. Otherwise, it is the last week of
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// the previous year, and the next week is week 1.
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return _(dojox.date.posix.getIsoWeekOfYear(dateObject));
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case "W": // week number of the current year as a decimal number,
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// starting with the first Monday as the first day of the
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// first week
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return _(dojo.date.locale._getWeekOfYear(dateObject, 1));
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case "w": // day of the week as a decimal, Sunday being 0
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return String(dateObject.getDay());
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case "x": // preferred date representation for the current locale
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// without the time
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return dojo.date.locale.format(dateObject, {selector:'date', formatLength: 'full', locale:locale});
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case "X": // preferred time representation for the current locale
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// without the date
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return dojo.date.locale.format(dateObject, {selector:'time', formatLength: 'full', locale:locale});
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case "y": // year as a decimal number without a century (range 00 to
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// 99)
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return _(dateObject.getFullYear()%100);
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case "Y": // year as a decimal number including the century
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return String(dateObject.getFullYear());
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case "z": // time zone or name or abbreviation
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var timezoneOffset = dateObject.getTimezoneOffset();
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return (timezoneOffset > 0 ? "-" : "+") +
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_(Math.floor(Math.abs(timezoneOffset)/60)) + ":" +
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_(Math.abs(timezoneOffset)%60);
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case "Z": // time zone or name or abbreviation
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return dojo.date.getTimezoneName(dateObject);
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case "%":
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return "%";
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}
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};
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// parse the formatting string and construct the resulting string
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var string = "";
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var i = 0;
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var index = 0;
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var switchCase = null;
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while ((index = format.indexOf("%", i)) != -1){
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string += format.substring(i, index++);
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// inspect modifier flag
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switch (format.charAt(index++)) {
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case "_": // Pad a numeric result string with spaces.
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padChar = " "; break;
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case "-": // Do not pad a numeric result string.
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padChar = ""; break;
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case "0": // Pad a numeric result string with zeros.
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padChar = "0"; break;
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case "^": // Convert characters in result string to uppercase.
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switchCase = "upper"; break;
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case "*": // Convert characters in result string to lowercase
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switchCase = "lower"; break;
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case "#": // Swap the case of the result string.
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switchCase = "swap"; break;
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default: // no modifier flag so decrement the index
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padChar = null; index--; break;
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}
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// toggle case if a flag is set
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var property = $(format.charAt(index++));
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switch (switchCase){
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case "upper":
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property = property.toUpperCase();
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break;
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case "lower":
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property = property.toLowerCase();
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break;
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case "swap": // Upper to lower, and versey-vicea
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var compareString = property.toLowerCase();
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var swapString = '';
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var ch = '';
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for (var j = 0; j < property.length; j++){
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ch = property.charAt(j);
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swapString += (ch == compareString.charAt(j)) ?
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ch.toUpperCase() : ch.toLowerCase();
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}
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property = swapString;
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break;
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default:
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break;
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}
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switchCase = null;
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string += property;
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i = index;
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}
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string += format.substring(i);
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return string; // String
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};
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dojox.date.posix.getStartOfWeek = function(/*Date*/dateObject, /*Number*/firstDay){
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// summary: Return a date object representing the first day of the given
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// date's week.
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if(isNaN(firstDay)){
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firstDay = dojo.cldr.supplemental.getFirstDayOfWeek ? dojo.cldr.supplemental.getFirstDayOfWeek() : 0;
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}
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var offset = firstDay;
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if(dateObject.getDay() >= firstDay){
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offset -= dateObject.getDay();
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}else{
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offset -= (7 - dateObject.getDay());
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}
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var date = new Date(dateObject);
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date.setHours(0, 0, 0, 0);
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return dojo.date.add(date, "day", offset); // Date
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}
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dojox.date.posix.setIsoWeekOfYear = function(/*Date*/dateObject, /*Number*/week){
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// summary: Set the ISO8601 week number of the given date.
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// The week containing January 4th is the first week of the year.
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// week:
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// can be positive or negative: -1 is the year's last week.
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if(!week){ return dateObject; }
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var currentWeek = dojox.date.posix.getIsoWeekOfYear(dateObject);
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var offset = week - currentWeek;
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if(week < 0){
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var weeks = dojox.date.posix.getIsoWeeksInYear(dateObject);
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offset = (weeks + week + 1) - currentWeek;
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}
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return dojo.date.add(dateObject, "week", offset); // Date
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}
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dojox.date.posix.getIsoWeekOfYear = function(/*Date*/dateObject){
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// summary: Get the ISO8601 week number of the given date.
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// The week containing January 4th is the first week of the year.
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// See http://en.wikipedia.org/wiki/ISO_week_date
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var weekStart = dojox.date.posix.getStartOfWeek(dateObject, 1);
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var yearStart = new Date(dateObject.getFullYear(), 0, 4); // January 4th
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yearStart = dojox.date.posix.getStartOfWeek(yearStart, 1);
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var diff = weekStart.getTime() - yearStart.getTime();
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if(diff < 0){ return dojox.date.posix.getIsoWeeksInYear(weekStart); } // Integer
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return Math.ceil(diff / 604800000) + 1; // Integer
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}
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dojox.date.posix.getIsoWeeksInYear = function(/*Date*/dateObject) {
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// summary: Determine the number of ISO8601 weeks in the year of the given
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// date. Most years have 52 but some have 53.
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// See http://www.phys.uu.nl/~vgent/calendar/isocalendar_text3.htm
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function p(y) {
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return y + Math.floor(y/4) - Math.floor(y/100) + Math.floor(y/400);
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}
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var y = dateObject.getFullYear();
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return ( p(y) % 7 == 4 || p(y-1) % 7 == 3 ) ? 53 : 52; // Integer
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}
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