117 lines
3.2 KiB
JavaScript
117 lines
3.2 KiB
JavaScript
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/**
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* Module exports.
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*/
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module.exports = timeRange;
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/**
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* True during (or between) the specified time(s).
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*
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* Even though the examples don't show it, this parameter may be present in
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* each of the different parameter profiles, always as the last parameter.
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*
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*
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* Examples:
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*
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* ``` js
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* timerange(12)
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* true from noon to 1pm.
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*
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* timerange(12, 13)
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* same as above.
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*
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* timerange(12, "GMT")
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* true from noon to 1pm, in GMT timezone.
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*
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* timerange(9, 17)
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* true from 9am to 5pm.
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*
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* timerange(8, 30, 17, 00)
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* true from 8:30am to 5:00pm.
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*
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* timerange(0, 0, 0, 0, 0, 30)
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* true between midnight and 30 seconds past midnight.
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* ```
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*
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* timeRange(hour)
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* timeRange(hour1, hour2)
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* timeRange(hour1, min1, hour2, min2)
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* timeRange(hour1, min1, sec1, hour2, min2, sec2)
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* timeRange(hour1, min1, sec1, hour2, min2, sec2, gmt)
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*
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* @param {String} hour is the hour from 0 to 23. (0 is midnight, 23 is 11 pm.)
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* @param {String} min minutes from 0 to 59.
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* @param {String} sec seconds from 0 to 59.
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* @param {String} gmt either the string "GMT" for GMT timezone, or not specified, for local timezone.
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* @return {Boolean}
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*/
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function timeRange () {
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var args = Array.prototype.slice.call(arguments),
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lastArg = args.pop(),
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useGMTzone = (lastArg == "GMT"),
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currentDate = new Date();
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if (!useGMTzone) { args.push(lastArg); }
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var noOfArgs = args.length,
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result = false,
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numericArgs = args.map(function(n) { return parseInt(n) });
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// timeRange(hour)
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if (noOfArgs == 1) {
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result = getCurrentHour(useGMTzone, currentDate) == numericArgs[0];
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// timeRange(hour1, hour2)
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} else if (noOfArgs == 2) {
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var currentHour = getCurrentHour(useGMTzone, currentDate);
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result = (numericArgs[0] <= currentHour) && (currentHour < numericArgs[1]);
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// timeRange(hour1, min1, hour2, min2)
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} else if (noOfArgs == 4) {
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result =
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valueInRange(
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secondsElapsedToday(numericArgs[0], numericArgs[1], 0),
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secondsElapsedToday(getCurrentHour(useGMTzone, currentDate), getCurrentMinute(useGMTzone, currentDate), 0),
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secondsElapsedToday(numericArgs[2], numericArgs[3], 59)
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);
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// timeRange(hour1, min1, sec1, hour2, min2, sec2)
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} else if (noOfArgs == 6) {
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result =
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valueInRange(
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secondsElapsedToday(numericArgs[0], numericArgs[1], numericArgs[2]),
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secondsElapsedToday(
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getCurrentHour(useGMTzone, currentDate),
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getCurrentMinute(useGMTzone, currentDate),
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getCurrentSecond(useGMTzone, currentDate)
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),
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secondsElapsedToday(numericArgs[3], numericArgs[4], numericArgs[5])
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);
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}
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return result;
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}
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function secondsElapsedToday (hh, mm, ss) {
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return ((hh*3600) + (mm*60) + ss);
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}
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function getCurrentHour (gmt, currentDate) {
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return (gmt ? currentDate.getUTCHours() : currentDate.getHours());
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}
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function getCurrentMinute (gmt, currentDate) {
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return (gmt ? currentDate.getUTCMinutes() : currentDate.getMinutes());
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}
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function getCurrentSecond (gmt, currentDate) {
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return (gmt ? currentDate.getUTCSeconds() : currentDate.getSeconds());
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}
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// start <= value <= finish
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function valueInRange (start, value, finish) {
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return (start <= value) && (value <= finish);
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}
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