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97 lines
2.5 KiB
97 lines
2.5 KiB
'use strict'; |
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const moment = require('moment-timezone'); |
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const { isMoment } = moment; |
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const { default: moize } = require('moize'); |
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const isDate = value => |
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typeof value === 'object' && value instanceof Date && !isNaN(value.getTime()); |
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function getMoment(date, lang, timezone) { |
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if (date == null) date = moment(); |
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if (!isMoment(date)) date = moment(isDate(date) ? date : new Date(date)); |
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lang = toMomentLocale(lang); |
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if (lang) date = date.locale(lang); |
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if (timezone) date = date.tz(timezone); |
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return date; |
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} |
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function toISOString(date) { |
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if (date == null) { |
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return new Date().toISOString(); |
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} |
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if (date instanceof Date || isMoment(date)) { |
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return date.toISOString(); |
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} |
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return new Date(date).toISOString(); |
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} |
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function dateHelper(date, format) { |
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const { config } = this; |
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const moment = getMoment(date, getLanguage(this), config.timezone); |
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return moment.format(format || config.date_format); |
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} |
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function timeHelper(date, format) { |
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const { config } = this; |
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const moment = getMoment(date, getLanguage(this), config.timezone); |
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return moment.format(format || config.time_format); |
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} |
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function fullDateHelper(date, format) { |
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if (format) { |
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const moment = getMoment(date, getLanguage(this), this.config.timezone); |
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return moment.format(format); |
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} |
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return `${this.date(date)} ${this.time(date)}`; |
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} |
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function relativeDateHelper(date) { |
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const { config } = this; |
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const moment = getMoment(date, getLanguage(this), config.timezone); |
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return moment.fromNow(); |
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} |
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function timeTagHelper(date, format) { |
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const { config } = this; |
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return `<time datetime="${toISOString(date)}">${this.date(date, format, getLanguage(this), config.timezone)}</time>`; |
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} |
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function getLanguage(ctx) { |
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return ctx.page.lang || ctx.page.language || ctx.config.language; |
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} |
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/** |
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* Convert Hexo language code to Moment locale code. |
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* examples: |
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* default => en |
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* zh-CN => zh-cn |
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* |
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* Moment defined locales: https://github.com/moment/moment/tree/master/locale |
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*/ |
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function toMomentLocale(lang) { |
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if (lang === undefined) { |
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return undefined; |
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} |
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// moment.locale('') equals moment.locale('en') |
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// moment.locale(null) equals moment.locale('en') |
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if (!lang || lang === 'en' || lang === 'default') { |
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return 'en'; |
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} |
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return lang.toLowerCase().replace('_', '-'); |
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} |
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exports.date = dateHelper; |
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exports.date_xml = toISOString; |
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exports.time = timeHelper; |
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exports.full_date = fullDateHelper; |
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exports.relative_date = relativeDateHelper; |
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exports.time_tag = timeTagHelper; |
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exports.moment = moment; |
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exports.toMomentLocale = moize.shallow(toMomentLocale);
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