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Fix to match GHs algorithm
Related to micromark/micromark-extension-gfm-autolink-literal#5. Related to micromark/micromark-extension-gfm-autolink-literal#6.
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lines changed

‎.prettierignore‎

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coverage/
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*.html
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*.json
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*.md

‎.remarkignore‎

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test/

‎from-markdown.js‎

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var ccount = require('ccount')
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var findAndReplace = require('mdast-util-find-and-replace')
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var unicodePunctuation = require('micromark/dist/character/unicode-punctuation')
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var unicodeWhitespace = require('micromark/dist/character/unicode-whitespace')
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exports.transforms = [transformGfmAutolinkLiterals]
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exports.enter = {
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literalAutolink: enterLiteralAutolink,
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literalAutolinkEmail: enterLiteralAutolinkValue,
@@ -35,3 +41,117 @@ function exitLiteralAutolinkEmail(token) {
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function exitLiteralAutolink(token) {
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this.exit(token)
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}
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function transformGfmAutolinkLiterals(tree) {
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findAndReplace(
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tree,
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[
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[/(https?:\/\/|www(?=\.))([-.\w]+)([^ \t\r\n]*)/i, findUrl],
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[/([-.\w+]+)@([-\w]+(?:\.[-\w]+)+)/, findEmail]
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],
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{ignore: ['link', 'linkReference']}
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)
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}
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function findUrl($0, protocol, domain, path, match) {
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var prefix = ''
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var parts
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var result
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// Not an expected previous character.
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if (!previous(match)) {
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return false
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}
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// Treat `www` as part of the domain.
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if (/^w/i.test(protocol)) {
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domain = protocol + domain
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protocol = ''
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prefix = 'http://'
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}
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if (!isCorrectDomain(domain)) {
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return false
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}
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parts = splitUrl(domain + path)
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if (!parts[0]) return false
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result = {
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type: 'link',
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title: null,
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url: prefix + protocol + parts[0],
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children: [{type: 'text', value: protocol + parts[0]}]
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}
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if (parts[1]) {
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result = [result, {type: 'text', value: parts[1]}]
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}
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return result
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}
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function findEmail($0, atext, label, match) {
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// Not an expected previous character.
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if (!previous(match, true) || /[_-]$/.test(label)) {
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return false
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}
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return {
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type: 'link',
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title: null,
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url: 'mailto:' + atext + '@' + label,
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children: [{type: 'text', value: atext + '@' + label}]
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}
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}
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function isCorrectDomain(domain) {
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var parts = domain.split('.')
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if (
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parts.length < 2 ||
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(parts[parts.length - 1] &&
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(/_/.test(parts[parts.length - 1]) ||
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!/[a-zA-Z\d]/.test(parts[parts.length - 1]))) ||
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(parts[parts.length - 2] &&
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(/_/.test(parts[parts.length - 2]) ||
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!/[a-zA-Z\d]/.test(parts[parts.length - 2])))
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) {
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return false
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}
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return true
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}
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function splitUrl(url) {
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var trail = /[!"&'),.:;<>?\]}]+$/.exec(url)
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var closingParenIndex
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var openingParens
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var closingParens
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if (trail) {
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url = url.slice(0, trail.index)
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trail = trail[0]
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closingParenIndex = trail.indexOf(')')
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openingParens = ccount(url, '(')
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closingParens = ccount(url, ')')
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while (closingParenIndex !== -1 && openingParens > closingParens) {
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url += trail.slice(0, closingParenIndex + 1)
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trail = trail.slice(closingParenIndex + 1)
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closingParenIndex = trail.indexOf(')')
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closingParens++
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}
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}
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return [url, trail]
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}
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function previous(match, email) {
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var code = match.input.charCodeAt(match.index - 1)
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return (
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(code !== code || unicodeWhitespace(code) || unicodePunctuation(code)) &&
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(!email || code !== 47)
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)
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}

‎package.json‎

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"index.js",
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"to-markdown.js"
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],
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"dependencies": {},
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"dependencies": {
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"ccount": "^1.0.0",
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"mdast-util-find-and-replace": "^1.1.0",
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"micromark": "^2.11.3"
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},
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"devDependencies": {
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"mdast-util-from-markdown": "^0.8.0",
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"hast-util-to-html": "^7.0.0",
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"mdast-util-from-markdown": "^0.8.5",
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"mdast-util-to-hast": "^10.0.0",
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"mdast-util-to-markdown": "^0.6.0",
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"micromark-extension-gfm-autolink-literal": "^0.5.0",
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"micromark-extension-gfm-autolink-literal": "^0.5.6",
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"nyc": "^15.0.0",
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"prettier": "^2.0.0",
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"remark-cli": "^9.0.0",
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"scripts": {
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"format": "remark . -qfo && prettier . -w --loglevel warn && xo --fix",
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"test-api": "node test",
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"test-coverage": "nyc --reporter lcov tape test.js",
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"test-coverage": "nyc --reporter lcov tape test/index.js",
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"test": "npm run format && npm run test-coverage"
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},
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"nyc": {
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},
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"xo": {
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"prettier": true,
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"esnext": false
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"esnext": false,
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"rules": {
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"max-params": "off",
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"no-self-compare": "off",
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"unicorn/prefer-includes": "off",
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"unicorn/prefer-optional-catch-binding": "off"
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}
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},
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"remarkConfig": {
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"plugins": [

‎readme.md‎

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When parsing (`from-markdown`), must be combined with
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[`micromark-extension-gfm-autolink-literal`][extension].
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You probably shouldn’t use this package directly, but instead use
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[`remark-gfm`][remark-gfm] with **[remark][]**.
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You might want to use this package through [`remark-gfm`][remark-gfm] with
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**[remark][]**.
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2020
## Install
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‎test/algorithm-2.html‎

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<p>[https://</p>
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<p>[https://a</p>
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<p>[https://.</p>
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<p>[<a href="https://a">https://a</a>.</p>
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<p>[<a href="https://a">https://a</a>..</p>
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<p>[<a href="https://a..b">https://a..b</a></p>
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<p>[<a href="https://a.b">https://a.b</a></p>
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<p>[<a href="https://a.b">https://a.b</a>.</p>
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<p>[<a href="https://a.b">https://a.b</a>..</p>
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<p>[<a href="https://a.b.c">https://a.b.c</a></p>
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<p>[<a href="https://a.b..c">https://a.b..c</a></p>
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<p>[https://a.b_.c</p>
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<p>[<a href="https://a_.b.c">https://a_.b.c</a></p>
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<p>[https://a_.b_.c</p>
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<p>[<a href="https://a.b%C2%A9">https://a.b©</a></p>
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<p>[http://點看.com</p>
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<hr>
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<p>[<a href="http://a.b/c">http://a.b/c</a> (space)</p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>!</p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>"</p>
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<p>[<a href="http://a.b/c#">http://a.b/c#</a></p>
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<p>[<a href="http://a.b/c$">http://a.b/c$</a></p>
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<p>[<a href="http://a.b/c%25">http://a.b/c%</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>&amp;</p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>'</p>
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<p>[<a href="http://a.b/c(">http://a.b/c(</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>)</p>
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<p>[<a href="http://a.b/c*">http://a.b/c*</a></p>
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<p>[<a href="http://a.b/c+">http://a.b/c+</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>,</p>
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<p>[<a href="http://a.b/c-">http://a.b/c-</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>.</p>
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<p>[<a href="http://a.b/c/">http://a.b/c/</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>:</p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>;</p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>&lt;</p>
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<p>[<a href="http://a.b/c=">http://a.b/c=</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>?</p>
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<p>[<a href="http://a.b/c@">http://a.b/c@</a></p>
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<p>[<a href="http://a.b/c%5B">http://a.b/c[</a></p>
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<p>[<a href="http://a.b/c%5C">http://a.b/c\</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>]</p>
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<p>[<a href="http://a.b/c%5E">http://a.b/c^</a></p>
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<p>[<a href="http://a.b/c_">http://a.b/c_</a></p>
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<p>[<a href="http://a.b/c%60">http://a.b/c`</a></p>
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<p>[<a href="http://a.b/c%7B">http://a.b/c{</a></p>
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<p>[<a href="http://a.b/c%7C">http://a.b/c|</a></p>
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<p>[<a href="http://a.b/c">http://a.b/c</a>}</p>
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<p>[<a href="http://a.b/c~">http://a.b/c~</a></p>
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<hr>
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<p>[<a href="http://www">www</a>.</p>
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<p>[<a href="http://www.a">www.a</a></p>
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<p>[<a href="http://www">www</a>..</p>
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<p>[<a href="http://www.a">www.a</a>.</p>
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<p>[<a href="http://www.a">www.a</a>..</p>
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<p>[<a href="http://www.a..b">www.a..b</a></p>
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<p>[<a href="http://www.a.b">www.a.b</a></p>
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<p>[<a href="http://www.a.b">www.a.b</a>.</p>
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<p>[<a href="http://www.a.b">www.a.b</a>..</p>
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<p>[<a href="http://www.a.b.c">www.a.b.c</a></p>
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<p>[<a href="http://www.a.b..c">www.a.b..c</a></p>
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<p>[www.a.b_.c</p>
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<p>[<a href="http://www.a_.b.c">www.a_.b.c</a></p>
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<p>[www.a_.b_.c</p>
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<p>[<a href="http://www.a.b%C2%A9">www.a.b©</a></p>
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<p>[<a href="http://www.%E9%BB%9E%E7%9C%8B.com">www.點看.com</a></p>
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<hr>
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<p>[<a href="mailto:[email protected]">[email protected]</a></p>
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<p>[<a href="mailto:[email protected]">[email protected]</a></p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>.</p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>.</p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>..</p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>..b</p>
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<p>[<a href="mailto:[email protected]">[email protected]</a></p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>.</p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>..</p>
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<p>[<a href="mailto:[email protected]">[email protected]</a></p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>..c</p>
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<p>[<a href="mailto:[email protected]_.c">[email protected]_.c</a></p>
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<p>[<a href="mailto:[email protected]_.b.c">[email protected]_.b.c</a></p>
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<p>[<a href="mailto:[email protected]_.b_.c">[email protected]_.b_.c</a></p>
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<p>[<a href="mailto:[email protected]">[email protected]</a>©</p>
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<p>[a@b點看.com</p>
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<p>[點看@b.com</p>

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