Updated moment.js

node_modules/moment-timezone/moment-timezone-utils.js

@@ -0,0 +1,288 @@
+//! moment-timezone-utils.js
+//! version : 0.4.1
+//! author : Tim Wood
+//! license : MIT
+//! github.com/moment/moment-timezone
+
+(function (root, factory) {
+	"use strict";
+
+	/*global define*/
+	if (typeof define === 'function' && define.amd) {
+		define(['moment'], factory);                 // AMD
+	} else if (typeof exports === 'object') {
+		module.exports = factory(require('./'));     // Node
+	} else {
+		factory(root.moment);                        // Browser
+	}
+}(this, function (moment) {
+	"use strict";
+
+	if (!moment.tz) {
+		throw new Error("moment-timezone-utils.js must be loaded after moment-timezone.js");
+	}
+
+	/************************************
+		Pack Base 60
+	************************************/
+
+	var BASE60 = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWX',
+		EPSILON = 0.000001; // Used to fix floating point rounding errors
+
+	function packBase60Fraction(fraction, precision) {
+		var buffer = '.',
+			output = '',
+			current;
+
+		while (precision > 0) {
+			precision  -= 1;
+			fraction   *= 60;
+			current     = Math.floor(fraction + EPSILON);
+			buffer     += BASE60[current];
+			fraction   -= current;
+
+			// Only add buffer to output once we have a non-zero value.
+			// This makes '.000' output '', and '.100' output '.1'
+			if (current) {
+				output += buffer;
+				buffer  = '';
+			}
+		}
+
+		return output;
+	}
+
+	function packBase60(number, precision) {
+		var output = '',
+			absolute = Math.abs(number),
+			whole = Math.floor(absolute),
+			fraction = packBase60Fraction(absolute - whole, Math.min(~~precision, 10));
+
+		while (whole > 0) {
+			output = BASE60[whole % 60] + output;
+			whole = Math.floor(whole / 60);
+		}
+
+		if (number < 0) {
+			output = '-' + output;
+		}
+
+		if (output && fraction) {
+			return output + fraction;
+		}
+
+		if (!fraction && output === '-') {
+			return '0';
+		}
+
+		return output || fraction || '0';
+	}
+
+	/************************************
+		Pack
+	************************************/
+
+	function packUntils(untils) {
+		var out = [],
+			last = 0,
+			i;
+
+		for (i = 0; i < untils.length - 1; i++) {
+			out[i] = packBase60(Math.round((untils[i] - last) / 1000) / 60, 1);
+			last = untils[i];
+		}
+
+		return out.join(' ');
+	}
+
+	function packAbbrsAndOffsets(source) {
+		var index = 0,
+			abbrs = [],
+			offsets = [],
+			indices = [],
+			map = {},
+			i, key;
+
+		for (i = 0; i < source.abbrs.length; i++) {
+			key = source.abbrs[i] + '|' + source.offsets[i];
+			if (map[key] === undefined) {
+				map[key] = index;
+				abbrs[index] = source.abbrs[i];
+				offsets[index] = packBase60(Math.round(source.offsets[i] * 60) / 60, 1);
+				index++;
+			}
+			indices[i] = packBase60(map[key], 0);
+		}
+
+		return abbrs.join(' ') + '|' + offsets.join(' ') + '|' + indices.join('');
+	}
+
+	function validatePackData (source) {
+		if (!source.name)    { throw new Error("Missing name"); }
+		if (!source.abbrs)   { throw new Error("Missing abbrs"); }
+		if (!source.untils)  { throw new Error("Missing untils"); }
+		if (!source.offsets) { throw new Error("Missing offsets"); }
+		if (
+			source.offsets.length !== source.untils.length ||
+			source.offsets.length !== source.abbrs.length
+		) {
+			throw new Error("Mismatched array lengths");
+		}
+	}
+
+	function pack (source) {
+		validatePackData(source);
+		return source.name + '|' + packAbbrsAndOffsets(source) + '|' + packUntils(source.untils);
+	}
+
+	/************************************
+		Create Links
+	************************************/
+
+	function arraysAreEqual(a, b) {
+		var i;
+
+		if (a.length !== b.length) { return false; }
+
+		for (i = 0; i < a.length; i++) {
+			if (a[i] !== b[i]) {
+				return false;
+			}
+		}
+		return true;
+	}
+
+	function zonesAreEqual(a, b) {
+		return arraysAreEqual(a.offsets, b.offsets) && arraysAreEqual(a.abbrs, b.abbrs) && arraysAreEqual(a.untils, b.untils);
+	}
+
+	function findAndCreateLinks (input, output, links) {
+		var i, j, a, b, isUnique;
+
+		for (i = 0; i < input.length; i++) {
+			isUnique = true;
+			a = input[i];
+
+			for (j = 0; j < output.length; j++) {
+				b = output[j];
+
+				if (zonesAreEqual(a, b)) {
+					links.push(b.name + '|' + a.name);
+					isUnique = false;
+					continue;
+				}
+			}
+
+			if (isUnique) {
+				output.push(a);
+			}
+		}
+	}
+
+	function createLinks (source) {
+		var zones = [],
+			links = [];
+
+		if (source.links) {
+			links = source.links.slice();
+		}
+
+		findAndCreateLinks(source.zones, zones, links);
+
+		return {
+			version : source.version,
+			zones   : zones,
+			links   : links.sort()
+		};
+	}
+
+	/************************************
+		Filter Years
+	************************************/
+
+	function findStartAndEndIndex (untils, start, end) {
+		var startI = 0,
+			endI = untils.length + 1,
+			untilYear,
+			i;
+
+		if (!end) {
+			end = start;
+		}
+
+		if (start > end) {
+			i = start;
+			start = end;
+			end = i;
+		}
+
+		for (i = 0; i < untils.length; i++) {
+			if (untils[i] == null) {
+				continue;
+			}
+			untilYear = new Date(untils[i]).getUTCFullYear();
+			if (untilYear < start) {
+				startI = i + 1;
+			}
+			if (untilYear > end) {
+				endI = Math.min(endI, i + 1);
+			}
+		}
+
+		return [startI, endI];
+	}
+
+	function filterYears (source, start, end) {
+		var slice     = Array.prototype.slice,
+			indices   = findStartAndEndIndex(source.untils, start, end),
+			untils    = slice.apply(source.untils, indices);
+
+		untils[untils.length - 1] = null;
+
+		return {
+			name    : source.name,
+			abbrs   : slice.apply(source.abbrs, indices),
+			untils  : untils,
+			offsets : slice.apply(source.offsets, indices)
+		};
+	}
+
+	/************************************
+		Filter, Link, and Pack
+	************************************/
+
+	function filterLinkPack (input, start, end) {
+		var i,
+			inputZones = input.zones,
+			outputZones = [],
+			output;
+
+		for (i = 0; i < inputZones.length; i++) {
+			outputZones[i] = filterYears(inputZones[i], start, end);
+		}
+
+		output = createLinks({
+			zones : outputZones,
+			links : input.links.slice(),
+			version : input.version
+		});
+
+		for (i = 0; i < output.zones.length; i++) {
+			output.zones[i] = pack(output.zones[i]);
+		}
+
+		return output;
+	}
+
+	/************************************
+		Exports
+	************************************/
+
+	moment.tz.pack           = pack;
+	moment.tz.packBase60     = packBase60;
+	moment.tz.createLinks    = createLinks;
+	moment.tz.filterYears    = filterYears;
+	moment.tz.filterLinkPack = filterLinkPack;
+
+	return moment;
+}));