kopia lustrzana https://github.com/elk-zone/elk
120 wiersze
3.7 KiB
TypeScript
120 wiersze
3.7 KiB
TypeScript
import { TEXT_NODE } from 'ultrahtml'
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import type { Node } from 'ultrahtml'
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import { Fragment, h, isVNode } from 'vue'
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import type { VNode } from 'vue'
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import { RouterLink } from 'vue-router'
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import { decode } from 'tiny-decode'
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import type { ContentParseOptions } from './content-parse'
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import { parseMastodonHTML } from './content-parse'
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import ContentCode from '~/components/content/ContentCode.vue'
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import ContentMentionGroup from '~/components/content/ContentMentionGroup.vue'
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import AccountHoverWrapper from '~/components/account/AccountHoverWrapper.vue'
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function getTextualAstComponents(astChildren: Node[]): string {
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return astChildren
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.filter(({ type }) => type === TEXT_NODE)
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.map(({ value }) => value)
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.reduce((accumulator, current) => accumulator + current, '')
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.trim()
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}
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/**
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* Raw HTML to VNodes
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*/
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export function contentToVNode(
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content: string,
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options?: ContentParseOptions,
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): VNode {
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let tree = parseMastodonHTML(content, options)
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const textContents = getTextualAstComponents(tree.children)
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// if the username only contains emojis, we should probably show the emojis anyway to avoid a blank name
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if (options?.hideEmojis && textContents.length === 0)
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tree = parseMastodonHTML(content, { ...options, hideEmojis: false })
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return h(Fragment, (tree.children as Node[] || []).map(n => treeToVNode(n)))
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}
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function nodeToVNode(node: Node): VNode | string | null {
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if (node.type === TEXT_NODE)
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return node.value
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if (node.name === 'mention-group')
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return h(ContentMentionGroup, node.attributes, () => node.children.map(treeToVNode))
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if ('children' in node) {
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if (node.name === 'a' && (node.attributes.href?.startsWith('/') || node.attributes.href?.startsWith('.'))) {
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node.attributes.to = node.attributes.href
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const { href: _href, target: _target, ...attrs } = node.attributes
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return h(
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RouterLink as any,
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attrs,
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() => node.children.map(treeToVNode),
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)
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}
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return h(
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node.name,
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node.attributes,
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node.children.map(treeToVNode),
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)
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}
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return null
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}
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function treeToVNode(
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input: Node,
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): VNode | string | null {
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if (input.type === TEXT_NODE)
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return decode(input.value)
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if ('children' in input) {
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const node = handleNode(input)
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if (node == null)
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return null
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if (isVNode(node))
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return node
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return nodeToVNode(node)
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}
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return null
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}
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function handleMention(el: Node) {
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// Redirect mentions to the user page
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if (el.name === 'a' && el.attributes.class?.includes('mention')) {
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const href = el.attributes.href
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if (href) {
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const matchUser = href.match(UserLinkRE)
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if (matchUser) {
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const [, server, username] = matchUser
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const handle = `${username}@${server.replace(/(.+\.)(.+\..+)/, '$2')}`
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el.attributes.href = `/${server}/@${username}`
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return h(AccountHoverWrapper, { handle, class: 'inline-block' }, () => nodeToVNode(el))
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}
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const matchTag = href.match(TagLinkRE)
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if (matchTag) {
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const [, , name] = matchTag
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el.attributes.href = `/${currentServer.value}/tags/${name}`
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}
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}
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}
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return undefined
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}
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function handleCodeBlock(el: Node) {
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if (el.name === 'pre' && el.children[0]?.name === 'code') {
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const codeEl = el.children[0] as Node
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const classes = codeEl.attributes.class as string
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const lang = classes?.split(/\s/g).find(i => i.startsWith('language-'))?.replace('language-', '')
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const code = (codeEl.children && codeEl.children.length > 0)
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? recursiveTreeToText(codeEl)
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: ''
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return h(ContentCode, { lang, code: encodeURIComponent(code) })
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}
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}
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function handleNode(el: Node) {
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return handleCodeBlock(el) || handleMention(el) || el
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}
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