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etpinardetpinard
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move world-calendar logic in lib/dates.js to new 'calendars' component
- use Registry in lib.dates.js to invoke world-calendar logic on-demand.
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‎src/components/calendars/index.js

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/**
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* Copyright 2012-2016, Plotly, Inc.
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* All rights reserved.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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'use strict';
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var calendars = require('world-calendars');
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var Lib = require('../../lib');
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var constants = require('../../constants/numerical');
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var EPOCHJD = constants.EPOCHJD;
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var ONEDAY = constants.ONEDAY;
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// each calendar needs its own default canonical tick. I would love to use
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// 2000-01-01 (or even 0000-01-01) for them all but they don't necessarily
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// all support either of those dates. Instead I'll use the most significant
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// number they *do* support, biased toward the present day.
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var CANONICAL_TICK = {
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coptic: '2000-01-01',
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discworld: '2000-01-01',
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ethiopian: '2000-01-01',
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hebrew: '5000-01-01',
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islamic: '1000-01-01',
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julian: '2000-01-01',
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mayan: '5000-01-01',
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nanakshahi: '1000-01-01',
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nepali: '2000-01-01',
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persian: '1000-01-01',
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jalali: '1000-01-01',
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taiwan: '1000-01-01',
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thai: '2000-01-01',
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ummalqura: '1400-01-01'
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};
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// Start on a Sunday - for week ticks
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// Discworld and Mayan calendars don't have 7-day weeks anyway so don't change them.
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// If anyone really cares we can customize the auto tick spacings for these calendars.
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var CANONICAL_SUNDAY = {
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coptic: '2000-01-03',
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discworld: '2000-01-01',
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ethiopian: '2000-01-05',
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hebrew: '5000-01-01',
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islamic: '1000-01-02',
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julian: '2000-01-03',
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mayan: '5000-01-01',
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nanakshahi: '1000-01-05',
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nepali: '2000-01-05',
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persian: '1000-01-01',
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jalali: '1000-01-01',
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taiwan: '1000-01-04',
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thai: '2000-01-04',
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ummalqura: '1400-01-06'
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};
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var DFLTRANGE = {
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coptic: ['1700-01-01', '1701-01-01'],
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discworld: ['1800-01-01', '1801-01-01'],
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ethiopian: ['2000-01-01', '2001-01-01'],
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hebrew: ['5700-01-01', '5701-01-01'],
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islamic: ['1400-01-01', '1401-01-01'],
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julian: ['2000-01-01', '2001-01-01'],
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mayan: ['5200-01-01', '5201-01-01'],
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nanakshahi: ['0500-01-01', '0501-01-01'],
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nepali: ['2000-01-01', '2001-01-01'],
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persian: ['1400-01-01', '1401-01-01'],
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jalali: ['1400-01-01', '1401-01-01'],
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taiwan: ['0100-01-01', '0101-01-01'],
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thai: ['2500-01-01', '2501-01-01'],
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ummalqura: ['1400-01-01', '1401-01-01']
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};
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/*
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* convert d3 templates to world-calendars templates, so our users only need
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* to know d3's specifiers. Map space padding to no padding, and unknown fields
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* to an ugly placeholder
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*/
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var UNKNOWN = '##';
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var d3ToWorldCalendars = {
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'd': {'0': 'dd', '-': 'd'}, // 2-digit or unpadded day of month
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'a': {'0': 'D', '-': 'D'}, // short weekday name
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'A': {'0': 'DD', '-': 'DD'}, // full weekday name
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'j': {'0': 'oo', '-': 'o'}, // 3-digit or unpadded day of the year
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'W': {'0': 'ww', '-': 'w'}, // 2-digit or unpadded week of the year (Monday first)
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'm': {'0': 'mm', '-': 'm'}, // 2-digit or unpadded month number
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'b': {'0': 'M', '-': 'M'}, // short month name
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'B': {'0': 'MM', '-': 'MM'}, // full month name
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'y': {'0': 'yy', '-': 'yy'}, // 2-digit year (map unpadded to zero-padded)
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'Y': {'0': 'yyyy', '-': 'yyyy'}, // 4-digit year (map unpadded to zero-padded)
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'U': UNKNOWN, // Sunday-first week of the year
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'w': UNKNOWN, // day of the week [0(sunday),6]
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// combined format, we replace the date part with the world-calendar version
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// and the %X stays there for d3 to handle with time parts
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'%c': {'0': 'D M m %X yyyy', '-': 'D M m %X yyyy'},
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'%x': {'0': 'mm/dd/yyyy', '-': 'mm/dd/yyyy'}
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};
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function worldCalFmt(fmt, x, calendar) {
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var dateJD = Math.floor(x + 0.05 / ONEDAY) + EPOCHJD,
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cDate = getCal(calendar).fromJD(dateJD),
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i = 0,
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modifier, directive, directiveLen, directiveObj, replacementPart;
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while((i = fmt.indexOf('%', i)) !== -1) {
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modifier = fmt.charAt(i + 1);
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if(modifier === '0' || modifier === '-' || modifier === '_') {
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directiveLen = 3;
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directive = fmt.charAt(i + 1);
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if(modifier === '_') modifier = '-';
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}
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else {
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directive = modifier;
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modifier = '0';
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directiveLen = 2;
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}
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directiveObj = d3ToWorldCalendars[directive];
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if(!directiveObj) {
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i += directiveLen;
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}
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else {
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// code is recognized as a date part but world-calendars doesn't support it
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if(directiveObj === UNKNOWN) replacementPart = UNKNOWN;
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// format the cDate according to the translated directive
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else replacementPart = cDate.formatDate(directiveObj[modifier]);
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fmt = fmt.substr(0, i) + replacementPart + fmt.substr(i + directiveLen);
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i += replacementPart.length;
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}
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}
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return fmt;
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}
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// cache world calendars, so we don't have to reinstantiate
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// during each date-time conversion
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var allCals = {};
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function getCal(calendar) {
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var calendarObj = allCals[calendar];
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if(calendarObj) return calendarObj;
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calendarObj = allCals[calendar] = calendars.instance(calendar);
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return calendarObj;
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}
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module.exports = {
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moduleType: 'component',
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name: 'calendars',
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CANONICAL_SUNDAY: CANONICAL_SUNDAY,
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CANONICAL_TICK: CANONICAL_TICK,
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DFLTRANGE: DFLTRANGE,
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getCal: getCal,
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worldCalFmt: worldCalFmt
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};

‎src/constants/numerical.js

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ONEDAY: 86400000,
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ONEHOUR: 3600000,
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ONEMIN: 60000,
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ONESEC: 1000
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ONESEC: 1000,
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/*
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* For fast conversion btwn world calendars and epoch ms, the Julian Day Number
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* of the unix epoch. From calendars.instance().newDate(1970, 1, 1).toJD()
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*/
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EPOCHJD: 2440587.5
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};

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