/**
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* Represent a duration in seconds as a string
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*
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* Input should be a finite number; output will include one or two `:`
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* separators, and match the pattern `hhhh:mm:ss`, possibly with a leading `-`
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* for negative values and a trailing `.sss` part for non-integer input
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*
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* @memberof Formatters
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* @param {number|string} value - A finite number, or its string representation
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*
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* @example
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* var mf = new MessageFormat();
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*
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* mf.compile('It has been {D, duration}')({ D: 123 })
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* // 'It has been 2:03'
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*
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* mf.compile('Countdown: {D, duration}')({ D: -151200.42 })
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* // 'Countdown: -42:00:00.420'
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*/
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function duration(value) {
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if (!isFinite(value)) return String(value);
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var sign = '';
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if (value < 0) {
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sign = '-';
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value = Math.abs(value);
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} else {
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value = Number(value);
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}
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var sec = value % 60;
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var parts = [Math.round(sec) === sec ? sec : sec.toFixed(3)];
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if (value < 60) {
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parts.unshift(0); // at least one : is required
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} else {
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value = Math.round((value - parts[0]) / 60);
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parts.unshift(value % 60); // minutes
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if (value >= 60) {
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value = Math.round((value - parts[0]) / 60);
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parts.unshift(value); // hours
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}
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}
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var first = parts.shift();
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return (
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sign +
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first +
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':' +
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parts
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.map(function(n) {
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return n < 10 ? '0' + String(n) : String(n);
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})
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.join(':')
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);
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}
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module.exports = function() {
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return duration;
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};
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