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node_modules/markdown-it/lib/rules_inline/autolink.js 1.96 KB
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  // Process autolinks '<protocol:...>'
  
  'use strict';
  
  
  /*eslint max-len:0*/
  var EMAIL_RE    = /^<([a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*)>/;
  var AUTOLINK_RE = /^<([a-zA-Z][a-zA-Z0-9+.\-]{1,31}):([^<>\x00-\x20]*)>/;
  
  
  module.exports = function autolink(state, silent) {
    var tail, linkMatch, emailMatch, url, fullUrl, token,
        pos = state.pos;
  
    if (state.src.charCodeAt(pos) !== 0x3C/* < */) { return false; }
  
    tail = state.src.slice(pos);
  
    if (tail.indexOf('>') < 0) { return false; }
  
    if (AUTOLINK_RE.test(tail)) {
      linkMatch = tail.match(AUTOLINK_RE);
  
      url = linkMatch[0].slice(1, -1);
      fullUrl = state.md.normalizeLink(url);
      if (!state.md.validateLink(fullUrl)) { return false; }
  
      if (!silent) {
        token         = state.push('link_open', 'a', 1);
        token.attrs   = [ [ 'href', fullUrl ] ];
        token.markup  = 'autolink';
        token.info    = 'auto';
  
        token         = state.push('text', '', 0);
        token.content = state.md.normalizeLinkText(url);
  
        token         = state.push('link_close', 'a', -1);
        token.markup  = 'autolink';
        token.info    = 'auto';
      }
  
      state.pos += linkMatch[0].length;
      return true;
    }
  
    if (EMAIL_RE.test(tail)) {
      emailMatch = tail.match(EMAIL_RE);
  
      url = emailMatch[0].slice(1, -1);
      fullUrl = state.md.normalizeLink('mailto:' + url);
      if (!state.md.validateLink(fullUrl)) { return false; }
  
      if (!silent) {
        token         = state.push('link_open', 'a', 1);
        token.attrs   = [ [ 'href', fullUrl ] ];
        token.markup  = 'autolink';
        token.info    = 'auto';
  
        token         = state.push('text', '', 0);
        token.content = state.md.normalizeLinkText(url);
  
        token         = state.push('link_close', 'a', -1);
        token.markup  = 'autolink';
        token.info    = 'auto';
      }
  
      state.pos += emailMatch[0].length;
      return true;
    }
  
    return false;
  };