Hexo个人博客
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'use strict'
const { stripHTML, escapeHTML, prettyUrls } = require('hexo-util')
const crypto = require('crypto')
hexo.extend.helper.register('page_description', function () {
const { config, page } = this
let description = page.description || page.content || page.title || config.description
if (description) {
description = escapeHTML(stripHTML(description).substring(0, 150)
.trim()
).replace(/\n/g, ' ')
return description
}
})
hexo.extend.helper.register('cloudTags', function (options = {}) {
const env = this
let { source, minfontsize, maxfontsize, limit, unit, orderby, order } = options
unit = unit || 'px'
let result = ''
if (limit > 0) {
source = source.limit(limit)
}
const sizes = []
source.sort('length').forEach(tag => {
const { length } = tag
if (sizes.includes(length)) return
sizes.push(length)
})
const length = sizes.length - 1
source.sort(orderby, order).forEach(tag => {
const ratio = length ? sizes.indexOf(tag.length) / length : 0
const size = minfontsize + ((maxfontsize - minfontsize) * ratio)
let style = `font-size: ${parseFloat(size.toFixed(2))}${unit};`
const color = 'rgb(' + Math.floor(Math.random() * 201) + ', ' + Math.floor(Math.random() * 201) + ', ' + Math.floor(Math.random() * 201) + ')' // 0,0,0 -> 200,200,200
style += ` color: ${color}`
result += `<a href="${env.url_for(tag.path)}" style="${style}">${tag.name}</a>`
})
return result
})
hexo.extend.helper.register('urlNoIndex', function (url = null, trailingIndex = false, trailingHtml = false) {
return prettyUrls(url || this.url, { trailing_index: trailingIndex, trailing_html: trailingHtml })
})
hexo.extend.helper.register('md5', function (path) {
return crypto.createHash('md5').update(decodeURI(this.url_for(path))).digest('hex')
})
hexo.extend.helper.register('injectHtml', function (data) {
if (!data) return ''
return data.join('')
})
hexo.extend.helper.register('findArchivesTitle', function (page, menu, date) {
if (page.year) {
const dateStr = page.month ? `${page.year}-${page.month}` : `${page.year}`
const dateFormat = page.month ? hexo.theme.config.aside.card_archives.format : 'YYYY'
return date(dateStr, dateFormat)
}
const defaultTitle = this._p('page.archives')
if (!menu) return defaultTitle
const loop = (m) => {
for (const key in m) {
if (typeof m[key] === 'object') {
loop(m[key])
}
if (/\/archives\//.test(m[key])) {
return key
}
}
}
return loop(menu) || defaultTitle
})
hexo.extend.helper.register('isImgOrUrl', function (path) {
const imgTestReg = /\.(png|jpe?g|gif|svg|webp)(\?.*)?$/i
return path.indexOf('//') !== -1 || imgTestReg.test(path)
})