90 lines
2.4 KiB
TypeScript
90 lines
2.4 KiB
TypeScript
import { getDefaultSanitizeOptions, getTextOnlySanitizeOptions, TEXT_WITH_HTML_RULES } from '@shared/core-utils'
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const defaultSanitizeOptions = getDefaultSanitizeOptions()
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const textOnlySanitizeOptions = getTextOnlySanitizeOptions()
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const sanitizeHtml = require('sanitize-html')
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const markdownItEmoji = require('markdown-it-emoji/light')
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const MarkdownItClass = require('markdown-it')
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const markdownItForSafeHtml = new MarkdownItClass('default', { linkify: true, breaks: true, html: true })
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.enable(TEXT_WITH_HTML_RULES)
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.use(markdownItEmoji)
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const markdownItForPlainText = new MarkdownItClass('default', { linkify: false, breaks: true, html: false })
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.use(markdownItEmoji)
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.use(plainTextPlugin)
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const toSafeHtml = (text: string) => {
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if (!text) return ''
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// Restore line feed
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const textWithLineFeed = text.replace(/<br.?\/?>/g, '\r\n')
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// Convert possible markdown (emojis, emphasis and lists) to html
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const html = markdownItForSafeHtml.render(textWithLineFeed)
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// Convert to safe Html
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return sanitizeHtml(html, defaultSanitizeOptions)
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}
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const mdToOneLinePlainText = (text: string) => {
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if (!text) return ''
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markdownItForPlainText.render(text)
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// Convert to safe Html
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return sanitizeHtml(markdownItForPlainText.plainText, textOnlySanitizeOptions)
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}
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// ---------------------------------------------------------------------------
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export {
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toSafeHtml,
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mdToOneLinePlainText
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}
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// ---------------------------------------------------------------------------
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// Thanks: https://github.com/wavesheep/markdown-it-plain-text
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function plainTextPlugin (markdownIt: any) {
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function plainTextRule (state: any) {
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const text = scan(state.tokens)
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markdownIt.plainText = text
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}
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function scan (tokens: any[]) {
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let lastSeparator = ''
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let text = ''
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function buildSeparator (token: any) {
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if (token.type === 'list_item_close') {
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lastSeparator = ', '
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}
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if (token.tag === 'br' || token.type === 'paragraph_close') {
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lastSeparator = ' '
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}
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}
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for (const token of tokens) {
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buildSeparator(token)
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if (token.type !== 'inline') continue
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for (const child of token.children) {
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buildSeparator(child)
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if (!child.content) continue
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text += lastSeparator + child.content
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lastSeparator = ''
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}
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}
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return text
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}
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markdownIt.core.ruler.push('plainText', plainTextRule)
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}
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