134 lines
2.4 KiB
JavaScript
134 lines
2.4 KiB
JavaScript
'use strict'
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var whitespace = require('is-whitespace-character')
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var decode = require('parse-entities')
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var locate = require('../locate/tag')
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module.exports = autoLink
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autoLink.locator = locate
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autoLink.notInLink = true
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var lessThan = '<'
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var greaterThan = '>'
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var atSign = '@'
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var slash = '/'
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var mailto = 'mailto:'
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var mailtoLength = mailto.length
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function autoLink(eat, value, silent) {
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var self = this
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var subvalue = ''
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var length = value.length
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var index = 0
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var queue = ''
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var hasAtCharacter = false
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var link = ''
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var character
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var now
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var content
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var tokenizers
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var exit
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if (value.charAt(0) !== lessThan) {
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return
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}
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index++
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subvalue = lessThan
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while (index < length) {
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character = value.charAt(index)
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if (
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whitespace(character) ||
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character === greaterThan ||
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character === atSign ||
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(character === ':' && value.charAt(index + 1) === slash)
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) {
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break
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}
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queue += character
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index++
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}
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if (!queue) {
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return
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}
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link += queue
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queue = ''
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character = value.charAt(index)
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link += character
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index++
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if (character === atSign) {
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hasAtCharacter = true
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} else {
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if (character !== ':' || value.charAt(index + 1) !== slash) {
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return
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}
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link += slash
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index++
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}
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while (index < length) {
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character = value.charAt(index)
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if (whitespace(character) || character === greaterThan) {
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break
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}
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queue += character
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index++
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}
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character = value.charAt(index)
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if (!queue || character !== greaterThan) {
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return
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}
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/* istanbul ignore if - never used (yet) */
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if (silent) {
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return true
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}
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link += queue
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content = link
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subvalue += link + character
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now = eat.now()
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now.column++
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now.offset++
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if (hasAtCharacter) {
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if (link.slice(0, mailtoLength).toLowerCase() === mailto) {
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content = content.slice(mailtoLength)
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now.column += mailtoLength
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now.offset += mailtoLength
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} else {
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link = mailto + link
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}
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}
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// Temporarily remove all tokenizers except text in autolinks.
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tokenizers = self.inlineTokenizers
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self.inlineTokenizers = {text: tokenizers.text}
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exit = self.enterLink()
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content = self.tokenizeInline(content, now)
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self.inlineTokenizers = tokenizers
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exit()
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return eat(subvalue)({
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type: 'link',
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title: null,
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url: decode(link, {nonTerminated: false}),
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children: content
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})
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}
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