71 lines
1.7 KiB
JavaScript
71 lines
1.7 KiB
JavaScript
|
/**
|
||
|
|
* @typedef {import('hast').Element} Element
|
||
|
|
* @typedef {import('mdast').FootnoteReference} FootnoteReference
|
||
|
|
* @typedef {import('../state.js').State} State
|
||
|
|
*/
|
||
|
|
|
||
|
|
import {normalizeUri} from 'micromark-util-sanitize-uri'
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Turn an mdast `footnoteReference` node into hast.
|
||
|
|
*
|
||
|
|
* @param {State} state
|
||
|
|
* Info passed around.
|
||
|
|
* @param {FootnoteReference} node
|
||
|
|
* mdast node.
|
||
|
|
* @returns {Element}
|
||
|
|
* hast node.
|
||
|
|
*/
|
||
|
|
export function footnoteReference(state, node) {
|
||
|
|
const clobberPrefix =
|
||
|
|
typeof state.options.clobberPrefix === 'string'
|
||
|
|
? state.options.clobberPrefix
|
||
|
|
: 'user-content-'
|
||
|
|
const id = String(node.identifier).toUpperCase()
|
||
|
|
const safeId = normalizeUri(id.toLowerCase())
|
||
|
|
const index = state.footnoteOrder.indexOf(id)
|
||
|
|
/** @type {number} */
|
||
|
|
let counter
|
||
|
|
|
||
|
|
let reuseCounter = state.footnoteCounts.get(id)
|
||
|
|
|
||
|
|
if (reuseCounter === undefined) {
|
||
|
|
reuseCounter = 0
|
||
|
|
state.footnoteOrder.push(id)
|
||
|
|
counter = state.footnoteOrder.length
|
||
|
|
} else {
|
||
|
|
counter = index + 1
|
||
|
|
}
|
||
|
|
|
||
|
|
reuseCounter += 1
|
||
|
|
state.footnoteCounts.set(id, reuseCounter)
|
||
|
|
|
||
|
|
/** @type {Element} */
|
||
|
|
const link = {
|
||
|
|
type: 'element',
|
||
|
|
tagName: 'a',
|
||
|
|
properties: {
|
||
|
|
href: '#' + clobberPrefix + 'fn-' + safeId,
|
||
|
|
id:
|
||
|
|
clobberPrefix +
|
||
|
|
'fnref-' +
|
||
|
|
safeId +
|
||
|
|
(reuseCounter > 1 ? '-' + reuseCounter : ''),
|
||
|
|
dataFootnoteRef: true,
|
||
|
|
ariaDescribedBy: ['footnote-label']
|
||
|
|
},
|
||
|
|
children: [{type: 'text', value: String(counter)}]
|
||
|
|
}
|
||
|
|
state.patch(node, link)
|
||
|
|
|
||
|
|
/** @type {Element} */
|
||
|
|
const sup = {
|
||
|
|
type: 'element',
|
||
|
|
tagName: 'sup',
|
||
|
|
properties: {},
|
||
|
|
children: [link]
|
||
|
|
}
|
||
|
|
state.patch(node, sup)
|
||
|
|
return state.applyData(node, sup)
|
||
|
|
}
|