forked from Mirrors/elk
73 lines
2.1 KiB
TypeScript
73 lines
2.1 KiB
TypeScript
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import type { DefaultTreeAdapterMap } from 'parse5'
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import { parseFragment, serialize } from 'parse5'
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import type { VNode } from 'vue'
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import { Fragment, h } from 'vue'
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import { RouterLink } from 'vue-router'
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type Node = DefaultTreeAdapterMap['childNode']
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type Element = DefaultTreeAdapterMap['element']
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const UserLinkRE = /^https?:\/\/([^/]+)\/@([^/]+)$/
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const TagLinkRE = /^https?:\/\/([^/]+)\/tags\/([^/]+)$/
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export function defaultHandle(el: Element) {
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// Redirect mentions to the user page
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if (el.tagName === 'a' && el.attrs.find(i => i.name === 'class' && i.value.includes('mention'))) {
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const href = el.attrs.find(i => i.name === 'href')
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if (href) {
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const matchUser = href.value.match(UserLinkRE)
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if (matchUser) {
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const [, server, username] = matchUser
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href.value = `/@${username}@${server}`
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}
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const matchTag = href.value.match(TagLinkRE)
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if (matchTag) {
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const [, , name] = matchTag
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href.value = `/tags/${name}`
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}
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}
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}
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return el
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}
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export function contentToVNode(
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content: string,
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handle: (node: Element) => Element | undefined | null | void = defaultHandle,
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): VNode {
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const tree = parseFragment(content)
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return h(Fragment, tree.childNodes.map(n => treeToVNode(n, handle)))
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}
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export function treeToVNode(
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input: Node,
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handle: (node: Element) => Element | undefined | null | void = defaultHandle,
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): VNode | string | null {
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if (input.nodeName === '#text')
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// @ts-expect-error casing
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return input.value
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if ('childNodes' in input) {
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const node = handle(input)
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if (node == null)
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return null
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const attrs = Object.fromEntries(node.attrs.map(i => [i.name, i.value]))
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if (node.nodeName === 'a' && (attrs.href?.startsWith('/') || attrs.href?.startsWith('.'))) {
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attrs.to = attrs.href
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delete attrs.href
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delete attrs.target
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return h(
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RouterLink as any,
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attrs,
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node.childNodes.map(n => treeToVNode(n, handle)),
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)
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}
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return h(
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node.nodeName,
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attrs,
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node.childNodes.map(n => treeToVNode(n, handle)),
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)
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}
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return null
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}
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