pinafore/src/routes/_utils/statusHtmlToPlainText.js

42 lines
1.2 KiB
JavaScript

import { mark, stop } from './marks'
let domParser = process.browser && new DOMParser()
// mentions like "@foo" have to be expanded to "@foo@example.com"
function massageMentions (doc, mentions) {
let anchors = doc.querySelectorAll('a.mention')
for (let i = 0; i < anchors.length; i++) {
let anchor = anchors[i]
let href = anchor.getAttribute('href')
let mention = mentions.find(mention => mention.url === href)
if (mention) {
anchor.innerText = `@${mention.acct}`
}
}
}
// paragraphs should be separated by double newlines
// single <br/>s should become single newlines
function innerTextRetainingNewlines (doc) {
let paragraphs = doc.querySelectorAll('p')
return Array.from(paragraphs).map(paragraph => {
let brs = paragraph.querySelectorAll('br')
Array.from(brs).forEach(br => {
br.parentNode.replaceChild(doc.createTextNode('\n'), br)
})
return paragraph.textContent
}).join('\n\n')
}
export function statusHtmlToPlainText (html, mentions) {
if (!html) {
return ''
}
mark('statusHtmlToPlainText')
let doc = domParser.parseFromString(html, 'text/html')
massageMentions(doc, mentions)
let res = innerTextRetainingNewlines(doc)
stop('statusHtmlToPlainText')
return res
}