140 lines
3.1 KiB
JavaScript
140 lines
3.1 KiB
JavaScript
var monthInitials = ["J","F","M","A","m","j","U","a","S","O","N","D"];
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var initials = ["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"];
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var timeZone = [
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12*60,
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11*60,
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10*60,
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9.5*60,
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9*60,
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8*60,
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7*60,
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6*60,
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5*60,
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4*60,
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3.5*60,
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3*60,
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2*60,
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1*60,
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0*60,
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-1*60,
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-2*60,
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-3*60,
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-3.5*60,
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-4*60,
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-4.5*60,
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-5*60,
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-5.5*60,
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-5.75*60,
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-6*60,
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-6.5*60,
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-7*60,
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-8*60,
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-8.5*60,
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-8.75*60,
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-9*60,
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-9.5*60,
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-10*60,
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-10.5*60,
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-11*60,
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-12*60,
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-12.75*60,
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-13*60,
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-14*60
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];
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function parseToUTC(dtObj, includeDate, includeCentury, includeTime){
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if(typeof dtObj === "string"){
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dtObj = new Date(dtObj);
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}
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var dtStr = "";
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if(includeCentury){
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dtStr += char(Math.floor(dtObj.getUTCFullYear()/100)) ;
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}
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if(includeDate){//3
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//year
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dtStr += char(dtObj.getUTCFullYear()%100);
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//month
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dtStr += monthInitials[dtObj.getUTCMonth()];
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//date
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dtStr += initials[dtObj.getUTCDate()]
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}
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if(includeTime){//5
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//h
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dtStr += initials[dtObj.getUTCHours()]
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//m
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dtStr += initials[dtObj.getUTCMinutes()];
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//s
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dtStr += initials[dtObj.getUTCSeconds()];
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//ms
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var ms = dtObj.getUTCMilliseconds();
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dtStr += char(Math.floor(ms/10)) ;
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dtStr += char(ms%10) ;
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}
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//zone
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//if(includeZone){//1
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dtStr += initials[timeZone.indexOf(dtObj.getTimezoneOffset() ) ]
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//}
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return dtStr;
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}
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/**
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*
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* @param {*} dtStr
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* @param {*} includeDate
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* @param {*} includeCentury
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* @param {*} includeTime
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* @param {*} includeZone
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*/
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function parseBackUTC(dtStr,includeDate, includeCentury, includeTime){
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var century = 0;
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var startFrom = 0;
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var Y = 0, M = 0, D = 0, h = 0, m = 0, s = 0, ms = 0, z = 0;
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if(includeCentury){//1st digit is century
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century = 100 * ascii(dtStr[startFrom++]);
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}
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if(includeDate){
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Y = century + ascii(dtStr[startFrom++]);
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M = monthInitials.indexOf(dtStr[startFrom++]);
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D = initials.indexOf(dtStr[startFrom++])
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//startFrom += 3;
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}
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if(includeTime){
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h = initials.indexOf(dtStr[startFrom++]);
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m = initials.indexOf(dtStr[startFrom++]);
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s = initials.indexOf(dtStr[startFrom++]);
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ms = ascii(dtStr[startFrom++])*10 + ascii(dtStr[startFrom++]);
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//startFrom += 5;
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}
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var dt = new Date(Y,M,D,h,m,s,ms);
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//if(includeZone){
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z = timeZone[initials.indexOf(dtStr[startFrom])];
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dt.setTime(dt.getTime() - z*60*1000);
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//}
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return dt;
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}
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function ascii(ch){
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return ch.charCodeAt(0);
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}
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/**
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* converts a ASCII number into equivalant ASCII char
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* @param {number} a
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* @returns ASCII char
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*/
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var char = function (a){
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return String.fromCharCode(a);
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}
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exports.parse = parseToUTC;
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exports.parseBack = parseBackUTC;
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