295 lines
12 KiB
JavaScript
Executable File
295 lines
12 KiB
JavaScript
Executable File
/*\
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title: js/Utils.js
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Various static utility functions.
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This file is a bit of a dumping ground; the expectation is that most of these functions will be refactored.
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\*/
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(function(){
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/*jslint node: true */
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"use strict";
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var utils = exports;
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// Pad a string to a certain length with zeros
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utils.zeroPad = function(n,d)
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{
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var s = n.toString();
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if(s.length < d)
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s = "000000000000000000000000000".substr(0,d-s.length) + s;
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return s;
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};
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// Convert a date to UTC YYYYMMDDHHMM string format
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utils.convertToYYYYMMDDHHMM = function(date)
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{
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return date.getUTCFullYear() + utils.zeroPad(date.getUTCMonth()+1,2) + utils.zeroPad(date.getUTCDate(),2) + utils.zeroPad(date.getUTCHours(),2) + utils.zeroPad(date.getUTCMinutes(),2);
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};
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// Convert a date to UTC YYYYMMDDHHMMSSMMM string format
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utils.convertToYYYYMMDDHHMMSSMMM = function(date)
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{
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return date.getUTCFullYear() + utils.zeroPad(date.getUTCMonth()+1,2) + utils.zeroPad(date.getUTCDate(),2) + utils.zeroPad(date.getUTCHours(),2) + utils.zeroPad(date.getUTCMinutes(),2) + utils.zeroPad(date.getUTCSeconds(),2) + utils.zeroPad(date.getUTCMilliseconds(),3) +"0";
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};
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// Create a UTC date from a YYYYMMDDHHMM format string
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utils.convertFromYYYYMMDDHHMM = function(d)
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{
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return utils.convertFromYYYYMMDDHHMMSSMMM(d.substr(0,12));
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};
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// Create a UTC date from a YYYYMMDDHHMMSS format string
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utils.convertFromYYYYMMDDHHMMSS = function(d)
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{
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return utils.convertFromYYYYMMDDHHMMSSMMM(d.substr(0,14));
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};
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// Create a UTC date from a YYYYMMDDHHMMSSMMM format string
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utils.convertFromYYYYMMDDHHMMSSMMM = function(d)
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{
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return new Date(Date.UTC(parseInt(d.substr(0,4),10),
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parseInt(d.substr(4,2),10)-1,
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parseInt(d.substr(6,2),10),
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parseInt(d.substr(8,2)||"00",10),
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parseInt(d.substr(10,2)||"00",10),
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parseInt(d.substr(12,2)||"00",10),
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parseInt(d.substr(14,3)||"000",10)));
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};
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utils.formatDateString = function (date,template) {
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var t = template.replace(/0hh12/g,utils.zeroPad(utils.getHours12(date),2));
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t = t.replace(/hh12/g,utils.getHours12(date));
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t = t.replace(/0hh/g,utils.zeroPad(date.getHours(),2));
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t = t.replace(/hh/g,date.getHours());
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t = t.replace(/mmm/g,utils.dateFormats.shortMonths[date.getMonth()]);
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t = t.replace(/0mm/g,utils.zeroPad(date.getMinutes(),2));
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t = t.replace(/mm/g,date.getMinutes());
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t = t.replace(/0ss/g,utils.zeroPad(date.getSeconds(),2));
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t = t.replace(/ss/g,date.getSeconds());
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t = t.replace(/[ap]m/g,utils.getAmPm(date).toLowerCase());
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t = t.replace(/[AP]M/g,utils.getAmPm(date).toUpperCase());
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t = t.replace(/wYYYY/g,utils.getYearForWeekNo(date));
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t = t.replace(/wYY/g,utils.zeroPad(utils.getYearForWeekNo(date)-2000,2));
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t = t.replace(/YYYY/g,date.getFullYear());
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t = t.replace(/YY/g,utils.zeroPad(date.getFullYear()-2000,2));
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t = t.replace(/MMM/g,utils.dateFormats.months[date.getMonth()]);
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t = t.replace(/0MM/g,utils.zeroPad(date.getMonth()+1,2));
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t = t.replace(/MM/g,date.getMonth()+1);
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t = t.replace(/0WW/g,utils.zeroPad(utils.getWeek(date),2));
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t = t.replace(/WW/g,utils.getWeek(date));
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t = t.replace(/DDD/g,utils.dateFormats.days[date.getDay()]);
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t = t.replace(/ddd/g,utils.dateFormats.shortDays[date.getDay()]);
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t = t.replace(/0DD/g,utils.zeroPad(date.getDate(),2));
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t = t.replace(/DDth/g,date.getDate()+utils.getDaySuffix(date));
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t = t.replace(/DD/g,date.getDate());
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var tz = date.getTimezoneOffset();
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var atz = Math.abs(tz);
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t = t.replace(/TZD/g,(tz < 0 ? '+' : '-') + utils.zeroPad(Math.floor(atz / 60),2) + ':' + utils.zeroPad(atz % 60,2));
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t = t.replace(/\\/g,"");
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return t;
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};
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utils.dateFormats = {
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months: ["January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November","December"],
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days: ["Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday"],
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shortMonths: ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"],
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shortDays: ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"],
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// suffixes for dates, eg "1st","2nd","3rd"..."30th","31st"
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daySuffixes: ["st","nd","rd","th","th","th","th","th","th","th",
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"th","th","th","th","th","th","th","th","th","th",
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"st","nd","rd","th","th","th","th","th","th","th",
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"st"],
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am: "am",
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pm: "pm"
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};
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utils.getAmPm = function(date) {
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return date.getHours() >= 12 ? utils.dateFormats.pm : utils.dateFormats.am;
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};
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utils.getDaySuffix = function(date) {
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return utils.dateFormats.daySuffixes[date.getDate()-1];
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};
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utils.getWeek = function(date) {
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var dt = new Date(date.getTime());
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var d = dt.getDay();
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if(d === 0) d=7;// JavaScript Sun=0, ISO Sun=7
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dt.setTime(dt.getTime()+(4-d)*86400000);// shift day to Thurs of same week to calculate weekNo
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var n = Math.floor((dt.getTime()-new Date(dt.getFullYear(),0,1)+3600000)/86400000);
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return Math.floor(n/7)+1;
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};
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utils.getYearForWeekNo = function(date) {
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var dt = new Date(date.getTime());
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var d = dt.getDay();
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if(d === 0) d=7;// JavaScript Sun=0, ISO Sun=7
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dt.setTime(dt.getTime()+(4-d)*86400000);// shift day to Thurs of same week
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return dt.getFullYear();
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};
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utils.getHours12 = function(date) {
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var h = date.getHours();
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return h > 12 ? h-12 : ( h > 0 ? h : 12 );
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};
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// Convert & to "&", < to "<", > to ">" and " to """
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utils.htmlEncode = function(s)
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{
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if(s) {
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return s.toString().replace(/&/mg,"&").replace(/</mg,"<").replace(/>/mg,">").replace(/\"/mg,""");
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} else {
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return "";
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}
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};
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// Convert "&" to &, "<" to <, ">" to > and """ to "
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utils.htmlDecode = function(s)
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{
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return s.toString().replace(/</mg,"<").replace(/>/mg,">").replace(/"/mg,"\"").replace(/&/mg,"&");
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};
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// Converts all HTML entities to their character equivalents
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utils.entityDecode = function(s) {
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var e = s.substr(1,s.length-2); // Strip the & and the ;
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if(e.charAt(0) === "#") {
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if(e.charAt(1) === "x" || e.charAt(1) === "X") {
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return String.fromCharCode(parseInt(e.substr(2),16));
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} else {
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return String.fromCharCode(parseInt(e.substr(1),10));
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}
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} else {
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var c = utils.htmlEntities[e];
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if(c) {
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return String.fromCharCode(c);
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} else {
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return s; // Couldn't convert it as an entity, just return it raw
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}
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}
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};
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utils.htmlEntities = {quot:34, amp:38, apos:39, lt:60, gt:62, nbsp:160, iexcl:161, cent:162, pound:163, curren:164, yen:165, brvbar:166, sect:167, uml:168, copy:169, ordf:170, laquo:171, not:172, shy:173, reg:174, macr:175, deg:176, plusmn:177, sup2:178, sup3:179, acute:180, micro:181, para:182, middot:183, cedil:184, sup1:185, ordm:186, raquo:187, frac14:188, frac12:189, frac34:190, iquest:191, Agrave:192, Aacute:193, Acirc:194, Atilde:195, Auml:196, Aring:197, AElig:198, Ccedil:199, Egrave:200, Eacute:201, Ecirc:202, Euml:203, Igrave:204, Iacute:205, Icirc:206, Iuml:207, ETH:208, Ntilde:209, Ograve:210, Oacute:211, Ocirc:212, Otilde:213, Ouml:214, times:215, Oslash:216, Ugrave:217, Uacute:218, Ucirc:219, Uuml:220, Yacute:221, THORN:222, szlig:223, agrave:224, aacute:225, acirc:226, atilde:227, auml:228, aring:229, aelig:230, ccedil:231, egrave:232, eacute:233, ecirc:234, euml:235, igrave:236, iacute:237, icirc:238, iuml:239, eth:240, ntilde:241, ograve:242, oacute:243, ocirc:244, otilde:245, ouml:246, divide:247, oslash:248, ugrave:249, uacute:250, ucirc:251, uuml:252, yacute:253, thorn:254, yuml:255, OElig:338, oelig:339, Scaron:352, scaron:353, Yuml:376, fnof:402, circ:710, tilde:732, Alpha:913, Beta:914, Gamma:915, Delta:916, Epsilon:917, Zeta:918, Eta:919, Theta:920, Iota:921, Kappa:922, Lambda:923, Mu:924, Nu:925, Xi:926, Omicron:927, Pi:928, Rho:929, Sigma:931, Tau:932, Upsilon:933, Phi:934, Chi:935, Psi:936, Omega:937, alpha:945, beta:946, gamma:947, delta:948, epsilon:949, zeta:950, eta:951, theta:952, iota:953, kappa:954, lambda:955, mu:956, nu:957, xi:958, omicron:959, pi:960, rho:961, sigmaf:962, sigma:963, tau:964, upsilon:965, phi:966, chi:967, psi:968, omega:969, thetasym:977, upsih:978, piv:982, ensp:8194, emsp:8195, thinsp:8201, zwnj:8204, zwj:8205, lrm:8206, rlm:8207, ndash:8211, mdash:8212, lsquo:8216, rsquo:8217, sbquo:8218, ldquo:8220, rdquo:8221, bdquo:8222, dagger:8224, Dagger:8225, bull:8226, hellip:8230, permil:8240, prime:8242, Prime:8243, lsaquo:8249, rsaquo:8250, oline:8254, frasl:8260, euro:8364, image:8465, weierp:8472, real:8476, trade:8482, alefsym:8501, larr:8592, uarr:8593, rarr:8594, darr:8595, harr:8596, crarr:8629, lArr:8656, uArr:8657, rArr:8658, dArr:8659, hArr:8660, forall:8704, part:8706, exist:8707, empty:8709, nabla:8711, isin:8712, notin:8713, ni:8715, prod:8719, sum:8721, minus:8722, lowast:8727, radic:8730, prop:8733, infin:8734, ang:8736, and:8743, or:8744, cap:8745, cup:8746, int:8747, there4:8756, sim:8764, cong:8773, asymp:8776, ne:8800, equiv:8801, le:8804, ge:8805, sub:8834, sup:8835, nsub:8836, sube:8838, supe:8839, oplus:8853, otimes:8855, perp:8869, sdot:8901, lceil:8968, rceil:8969, lfloor:8970, rfloor:8971, lang:9001, rang:9002, loz:9674, spades:9824, clubs:9827, hearts:9829, diams:9830 };
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utils.unescapeLineBreaks = function(s) {
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return s.replace(/\\n/mg,"\n").replace(/\\b/mg," ").replace(/\\s/mg,"\\").replace(/\r/mg,"");
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};
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/*
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* Returns an escape sequence for given character. Uses \x for characters <=
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* 0xFF to save space, \u for the rest.
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*
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* The code needs to be in sync with th code template in the compilation
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* function for "action" nodes.
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*/
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// Copied from peg.js, thanks to David Majda
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utils.escape = function(ch) {
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var escapeChar,
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length,
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charCode = ch.charCodeAt(0);
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if (charCode <= 0xFF) {
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escapeChar = 'x';
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length = 2;
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} else {
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escapeChar = 'u';
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length = 4;
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}
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return '\\' + escapeChar + utils.zeroPad(charCode.toString(16).toUpperCase(),length);
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};
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// Turns a string into a legal JavaScript string
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// Copied from peg.js, thanks to David Majda
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utils.stringify = function(s) {
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/*
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* ECMA-262, 5th ed., 7.8.4: All characters may appear literally in a string
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* literal except for the closing quote character, backslash, carriage return,
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* line separator, paragraph separator, and line feed. Any character may
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* appear in the form of an escape sequence.
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*
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* For portability, we also escape escape all non-ASCII characters.
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*/
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return s
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.replace(/\\/g, '\\\\') // backslash
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.replace(/"/g, '\\"') // double quote character
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.replace(/'/g, "\\'") // single quote character
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.replace(/\r/g, '\\r') // carriage return
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.replace(/\n/g, '\\n') // line feed
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.replace(/[\x80-\uFFFF]/g, utils.escape); // non-ASCII characters
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};
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utils.nextTick = function(fn) {
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/*global window: false */
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if(typeof window !== "undefined") {
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// Apparently it would be faster to use postMessage - http://dbaron.org/log/20100309-faster-timeouts
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window.setTimeout(fn,4);
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} else {
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process.nextTick(fn);
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}
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};
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/*
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Determines whether element 'a' contains element 'b'
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Code thanks to John Resig, http://ejohn.org/blog/comparing-document-position/
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*/
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utils.domContains = function(a,b) {
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return a.contains ?
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a != b && a.contains(b) :
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!!(a.compareDocumentPosition(b) & 16);
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};
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utils.hasClass = function(el,className) {
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return el.className.split(" ").indexOf(className) !== -1;
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};
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utils.addClass = function(el,className) {
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var c = el.className.split(" ");
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if(c.indexOf(className) === -1) {
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c.push(className);
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}
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el.className = c.join(" ");
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};
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utils.removeClass = function(el,className) {
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var c = el.className.split(" "),
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p = c.indexOf(className);
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if(p !== -1) {
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c.splice(p,1);
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el.className = c.join(" ");
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}
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};
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utils.toggleClass = function(el,className,status) {
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if(status === undefined) {
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status = !utils.hasClass(el,className);
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}
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if(status) {
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utils.addClass(el,className);
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} else {
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utils.removeClass(el,className);
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}
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};
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utils.applyStyleSheet = function(id,css) {
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var el = document.getElementById(id);
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if(document.createStyleSheet) { // Older versions of IE
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if(el) {
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el.parentNode.removeChild(el);
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}
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document.getElementsByTagName("head")[0].insertAdjacentHTML("beforeEnd",
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' <style id="' + id + '" type="text/css">' + css + '</style>'); // fails without
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} else { // Modern browsers
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if(el) {
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el.replaceChild(document.createTextNode(css), el.firstChild);
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} else {
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el = document.createElement("style");
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el.type = "text/css";
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el.id = id;
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el.appendChild(document.createTextNode(css));
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document.getElementsByTagName("head")[0].appendChild(el);
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}
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}
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};
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})();
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