85 lines
2.7 KiB
JavaScript
85 lines
2.7 KiB
JavaScript
/**
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The HackMyResume date representation.
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@license MIT. Copyright (c) 2015 James Devlin / FluentDesk.
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@module fluent-date.js
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*/
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var moment = require('moment');
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/**
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Create a FluentDate from a string or Moment date object. There are a few date
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formats to be aware of here.
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1. The words "Present" and "Now", referring to the current date
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2. The default "YYYY-MM-DD" format used in JSON Resume ("2015-02-10")
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3. Year-and-month only ("2015-04")
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4. Year-only "YYYY" ("2015")
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5. The friendly HackMyResume "mmm YYYY" format ("Mar 2015" or "Dec 2008")
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6. Empty dates ("", " ")
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7. Any other date format that Moment.js can parse from
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Note: Moment can transparently parse all or most of these, without requiring us
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to specify a date format...but for maximum parsing safety and to avoid Moment
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deprecation warnings, it's recommended to either a) explicitly specify the date
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format or b) use an ISO format. For clarity, we handle these cases explicitly.
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@class FluentDate
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*/
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function FluentDate( dt ) {
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this.rep = this.fmt( dt );
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}
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FluentDate/*.prototype*/.fmt = function( dt ) {
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if( (typeof dt === 'string' || dt instanceof String) ) {
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dt = dt.toLowerCase().trim();
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if( /^(present|now|current)$/.test(dt) ) { // "Present", "Now"
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return moment();
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}
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else if( /^\D+\s+\d{4}$/.test(dt) ) { // "Mar 2015"
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var parts = dt.split(' ');
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var month = (months[parts[0]] || abbr[parts[0]]);
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var temp = parts[1] + '-' + (month < 10 ? '0' + month : month.toString());
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return moment( temp, 'YYYY-MM' );
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}
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else if( /^\d{4}-\d{1,2}$/.test(dt) ) { // "2015-03", "1998-4"
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return moment( dt, 'YYYY-MM' );
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}
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else if( /^\s*\d{4}\s*$/.test(dt) ) { // "2015"
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return moment( dt, 'YYYY' );
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}
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else if( /^\s*$/.test(dt) ) { // "", " "
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var defTime = {
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isNull: true,
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isBefore: function( other ) {
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return( other && !other.isNull ) ? true : false;
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},
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isAfter: function( other ) {
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return( other && !other.isNull ) ? false : false;
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},
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unix: function() { return 0; },
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format: function() { return ''; },
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diff: function() { return 0; }
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};
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return defTime;
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}
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else {
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var mt = moment( dt );
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if(mt.isValid())
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return mt;
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throw 'Invalid date format encountered.';
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}
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}
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else {
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if( !dt ) {
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return moment();
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}
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else if( dt.isValid && dt.isValid() )
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return dt;
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throw 'Unknown date object encountered.';
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}
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};
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var months = {}, abbr = {};
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moment.months().forEach(function(m,idx){months[m.toLowerCase()]=idx+1;});
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moment.monthsShort().forEach(function(m,idx){abbr[m.toLowerCase()]=idx+1;});
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abbr.sept = 9;
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module.exports = FluentDate;
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