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90 lines
2.9 KiB
JavaScript
90 lines
2.9 KiB
JavaScript
const date = require('./date');
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const dayjs = require('dayjs');
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const customParseFormat = require('dayjs/plugin/customParseFormat');
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const logger = require('./logger');
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const utc = require('dayjs/plugin/utc');
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dayjs.extend(utc);
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dayjs.extend(customParseFormat);
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/**
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* Convert unconventional i8n to the one supported by dayjs https://bit.ly/2psVwIJ
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* @param {String} x i8n string
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*/
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const i8nconv = (x) => {
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const c = {
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'zh-hans': 'zh-cn',
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'zh-chs': 'zh-cn',
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'zh-sg': 'zh-cn',
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'zh-hant': 'zh-hk',
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'zh-cht': 'zh-hk',
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'zh-mo': 'zh-hk',
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};
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for (const prop in c) {
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if (RegExp(`^${prop}$`, 'i').test(x)) {
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x = c[prop];
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break;
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}
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}
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return x;
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};
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/**
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* A function to convert a string of time based on specified format
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* @param {string} [html] A string of time to convert.
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* @param {string} [customFormat=undefined] Format to parse html by dayjs.
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* @param {string} [lang=en] Language (must be supported by dayjs).
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* @param {int} [htmlOffset=0] UTC offset of html. It will be neglected if html contains timezone indicated by strings like "+0800".
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*/
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const tStringParser = (html, customFormat = undefined, lang = 'en', htmlOffset = 0) => {
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lang = i8nconv(lang);
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// Remove weekdays and comma from the string
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// dayjs v1.8.16 is not able to parse weekdays
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// https://github.com/iamkun/dayjs/blob/dev/docs/en/Plugin.md#list-of-all-available-format-tokens
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// We don't remove weekdayMini since the month may contains weekdayMini, like "六" in "六月"
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let removeStr = [];
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if (lang !== 'en') {
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try {
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require(`dayjs/locale/${lang}`);
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if (/^zh/.test(lang)) {
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removeStr = removeStr.concat(['，']);
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}
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// Add locale
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dayjs.locale(lang);
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} catch (error) {
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logger.error(`Locale "${lang}" passed to dateParser is not supported by dayjs`);
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return date(html);
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}
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}
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Object.values(dayjs.Ls).forEach((k) => {
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['weekdays', 'weekdaysShort'].forEach((x) => {
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if (k.hasOwnProperty(x)) {
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const a = k[x].map((z) => `${z}`);
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removeStr = removeStr.concat(...a);
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}
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});
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});
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removeStr = removeStr.concat([',', 'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat']);
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let htmlP = html;
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removeStr.forEach((x) => {
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// Order matters
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htmlP = htmlP.replace(RegExp(x, 'gi'), '');
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});
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const d = dayjs.utc(htmlP, customFormat);
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// console.log(htmlP,d)
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if (d.isValid()) {
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if (/[+-](\d{2}:?\d{2})/.test(html)) {
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return d.toDate().toUTCString();
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} else {
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return d.add(htmlOffset, 'h').toDate().toUTCString();
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}
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} else {
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return date(html);
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}
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};
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tStringParser.i8nconv = i8nconv;
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module.exports = tStringParser;
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