85 lines
1.9 KiB
JavaScript
85 lines
1.9 KiB
JavaScript
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/**
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* @typedef {import('mdast').Image} Image
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* @typedef {import('mdast').Parents} Parents
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* @typedef {import('../types.js').Info} Info
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* @typedef {import('../types.js').State} State
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*/
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import {checkQuote} from '../util/check-quote.js'
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image.peek = imagePeek
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/**
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* @param {Image} node
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* @param {Parents | undefined} _
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* @param {State} state
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* @param {Info} info
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* @returns {string}
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*/
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export function image(node, _, state, info) {
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const quote = checkQuote(state)
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const suffix = quote === '"' ? 'Quote' : 'Apostrophe'
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const exit = state.enter('image')
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let subexit = state.enter('label')
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const tracker = state.createTracker(info)
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let value = tracker.move('![')
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value += tracker.move(
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state.safe(node.alt, {before: value, after: ']', ...tracker.current()})
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)
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value += tracker.move('](')
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subexit()
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if (
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// If there’s no url but there is a title…
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(!node.url && node.title) ||
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// If there are control characters or whitespace.
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/[\0- \u007F]/.test(node.url)
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) {
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subexit = state.enter('destinationLiteral')
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value += tracker.move('<')
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value += tracker.move(
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state.safe(node.url, {before: value, after: '>', ...tracker.current()})
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)
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value += tracker.move('>')
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} else {
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// No whitespace, raw is prettier.
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subexit = state.enter('destinationRaw')
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value += tracker.move(
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state.safe(node.url, {
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before: value,
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after: node.title ? ' ' : ')',
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...tracker.current()
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})
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)
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}
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subexit()
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if (node.title) {
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subexit = state.enter(`title${suffix}`)
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value += tracker.move(' ' + quote)
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value += tracker.move(
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state.safe(node.title, {
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before: value,
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after: quote,
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...tracker.current()
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})
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)
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value += tracker.move(quote)
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subexit()
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}
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value += tracker.move(')')
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exit()
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return value
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}
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/**
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* @returns {string}
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*/
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function imagePeek() {
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return '!'
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}
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