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moment-precise-range.js
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moment-precise-range.js
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if (typeof moment === "undefined" && require) {
moment = require('moment');
}
(function(moment) {
var STRINGS = {
nodiff: '',
year: 'year',
years: 'years',
month: 'month',
months: 'months',
day: 'day',
days: 'days',
hour: 'hour',
hours: 'hours',
minute: 'minute',
minutes: 'minutes',
second: 'second',
seconds: 'seconds',
delimiter: ' '
};
function pluralize(num, word) {
return num + ' ' + STRINGS[word + (num === 1 ? '' : 's')];
}
function buildStringFromValues(yDiff, mDiff, dDiff, hourDiff, minDiff, secDiff){
var result = [];
if (yDiff) {
result.push(pluralize(yDiff, 'year'));
}
if (mDiff) {
result.push(pluralize(mDiff, 'month'));
}
if (dDiff) {
result.push(pluralize(dDiff, 'day'));
}
if (hourDiff) {
result.push(pluralize(hourDiff, 'hour'));
}
if (minDiff) {
result.push(pluralize(minDiff, 'minute'));
}
if (secDiff) {
result.push(pluralize(secDiff, 'second'));
}
return result.join(STRINGS.delimiter);
}
moment.fn.preciseDiff = function(d2, returnValueObject) {
return moment.preciseDiff(this, d2, returnValueObject);
};
moment.preciseDiff = function(d1, d2, returnValueObject) {
var m1 = moment(d1), m2 = moment(d2), firstDateWasLater;
m1.add(m2.utcOffset() - m1.utcOffset(), 'minutes'); // shift timezone of m1 to m2
if (m1.isSame(m2)) {
return STRINGS.nodiff;
}
if (m1.isAfter(m2)) {
var tmp = m1;
m1 = m2;
m2 = tmp;
firstDateWasLater = true;
} else {
firstDateWasLater = false;
}
var yDiff = m2.year() - m1.year();
var mDiff = m2.month() - m1.month();
var dDiff = m2.date() - m1.date();
var hourDiff = m2.hour() - m1.hour();
var minDiff = m2.minute() - m1.minute();
var secDiff = m2.second() - m1.second();
if (secDiff < 0) {
secDiff = 60 + secDiff;
minDiff--;
}
if (minDiff < 0) {
minDiff = 60 + minDiff;
hourDiff--;
}
if (hourDiff < 0) {
hourDiff = 24 + hourDiff;
dDiff--;
}
if (dDiff < 0) {
var daysInLastFullMonth = moment(m2.year() + '-' + (m2.month() + 1), "YYYY-MM").subtract(1, 'M').daysInMonth();
if (daysInLastFullMonth < m1.date()) { // 31/01 -> 2/03
dDiff = daysInLastFullMonth + dDiff + (m1.date() - daysInLastFullMonth);
} else {
dDiff = daysInLastFullMonth + dDiff;
}
mDiff--;
}
if (mDiff < 0) {
mDiff = 12 + mDiff;
yDiff--;
}
if (returnValueObject) {
return {
"years" : yDiff,
"months" : mDiff,
"days" : dDiff,
"hours" : hourDiff,
"minutes" : minDiff,
"seconds" : secDiff,
"firstDateWasLater" : firstDateWasLater
};
} else {
return buildStringFromValues(yDiff, mDiff, dDiff, hourDiff, minDiff, secDiff);
}
};
}(moment));