103 lines
3.2 KiB
JavaScript
103 lines
3.2 KiB
JavaScript
!function(){
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"use strict";
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var Timestring = function(settings) {
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// default settings
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var defaults = {
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hoursPerDay: 24,
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daysPerWeek: 7,
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weeksPerMonth: 4,
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monthsPerYear: 12
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};
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// merge default settings with user settings
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var settings = settings || {};
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this.settings = {};
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for (var property in defaults) { this.settings[property] = defaults[property]; }
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for (var property in settings) { this.settings[property] = settings[property]; }
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// time units
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this.units = {
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s: ['s', 'sec', 'secs', 'second', 'seconds'],
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m: ['m', 'min', 'mins', 'minute', 'minutes'],
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h: ['h', 'hr', 'hrs', 'hour', 'hours'],
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d: ['d', 'day', 'days'],
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w: ['w', 'week', 'weeks'],
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mth: ['mth', 'mths','month', 'months'],
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y: ['y', 'yr', 'yrs', 'year', 'years']
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};
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// time unit seconds mappings
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this.unitValues = {
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s: 1,
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m: 60,
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h: 3600
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};
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// dynamic time unit seconds mappings
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// these are dynamic based on the settings
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this.unitValues.d = this.settings.hoursPerDay * this.unitValues.h;
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this.unitValues.w = this.settings.daysPerWeek * this.unitValues.d;
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this.unitValues.mth = this.settings.weeksPerMonth * this.unitValues.w;
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this.unitValues.y = this.settings.monthsPerYear * this.unitValues.w;
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};
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Timestring.prototype.parse = function(string, returnUnit) {
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// reference to this
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var self = this;
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// convert a value to a specific unit
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function convert(value, unit) {
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var baseValue = self.unitValues[unit];
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return value / baseValue;
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}
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// get a value in seconds based on a specific unit
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function getSeconds(value, unit) {
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var baseValue = self.unitValues[unit];
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return value * baseValue;
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}
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// seconds counter
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var totalSeconds = 0;
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// dynamically generate units regular expression
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var unitsRegExp = '';
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for(var unit in this.units) {
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unitsRegExp += ',' + this.units[unit].join();
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}
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unitsRegExp = '(' +
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unitsRegExp
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.replace(/,/g, '|')
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.replace('|', '')
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+ ')';
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// split string into groups and get total seconds for each group
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var groups = string
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.replace(/[^\w+-]+/g, '') // remove white space
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.match(/[-+]?[0-9]*\.?[0-9]+\D/g);
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if (groups !== null) {
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for(var group in groups) {
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var g = groups[group],
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value = g.match(/[-+]?[0-9]*\.?[0-9]+/g),
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unit = g.match(new RegExp(unitsRegExp, 'g'));
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totalSeconds += getSeconds(value, unit);
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}
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}
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// return total, convert if needed
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return (returnUnit) ? convert(totalSeconds, returnUnit) : totalSeconds;
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}
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// add convenience method to string proto
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String.prototype.parseTime = function (unit, settings) {
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return (new Timestring(settings)).parse(this, unit);
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}
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}();
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