blog/scripts/smartypants.js

49 lines
1.4 KiB
JavaScript

const { escapeHTML: escape } = require('hexo-util')
// https://github.com/markedjs/marked/blob/b6773fca412c339e0cedd56b63f9fa1583cfd372/src/Lexer.js#L8-L24
// Replace dashes only
const smartypants = (str) => {
return str
// em-dashes
.replace(/---/g, '\u2014')
// en-dashes
.replace(/--/g, '\u2013')
// opening singles
.replace(/(^|[-\u2014/(\[{"\s])'/g, '$1\u2018')
// closing singles & apostrophes
.replace(/'/g, '\u2019')
// opening doubles
.replace(/(^|[-\u2014/(\[{\u2018\s])"/g, '$1\u201c')
// closing doubles
.replace(/"/g, '\u201d')
// ellipses
.replace(/\.{3}/g, '\u2026')
// right arrow
.replace(/->/g, '\u2192')
}
hexo.extend.filter.register('marked:tokenizer', function (tokenizer) {
const { smartypants: isSmarty } = this.config.marked
tokenizer.inlineText = function (src) {
const { rules } = this
// https://github.com/markedjs/marked/blob/b6773fca412c339e0cedd56b63f9fa1583cfd372/src/Tokenizer.js#L643-L658
const cap = rules.inline.text.exec(src)
if (cap) {
let text
if (this.lexer.state.inRawBlock) {
text = cap[0]
} else {
text = escape(isSmarty ? smartypants(cap[0]) : cap[0])
}
return {
// `type` value is a corresponding renderer method
// https://marked.js.org/using_pro#inline-level-renderer-methods
type: 'text',
raw: cap[0],
text
}
}
}
})