@atlaskit/editor-wikimarkup-transformer/dist/es2019/parser/tokenize/link-text.js

Wiki markup transformer for JIRA and Confluence

import { isSafeUrl } from '@atlaskit/adf-schema';
import { decode } from '../utils/url';
// the regex should exclude the period and exclamation mark as the last character
export const LINK_TEXT_REGEXP =
// Ignored via go/ees005
// eslint-disable-next-line require-unicode-regexp
/^((?:(?:https?|ftps?):\/\/)|irc:\/\/|mailto:)([\w?!~^\/\\#$%&'()*+,\-.\/:;<=@]*[\w~^\/\\#$%&'()*+,\-\/:;<=@])/i;
export const linkText = ({
  input,
  position,
  schema
}) => {
  const matches = input.substring(position).match(LINK_TEXT_REGEXP);
  if (!matches) {
    return fallback(input, position);
  }
  const match = trimBadEndChar(matches);

  // Remove mailto:
  const textRepresentation = match[1] === 'mailto:' ? match[2] : match[0];
  // parse and correctly encode any illegal characters, and
  // so no longer need to be encoded when used below
  const url = decode(unescape(match[0]));
  if (!isSafeUrl(url)) {
    return fallback(input, position);
  }
  const mark = schema.marks.link.create({
    href: url
  });
  const textNode = schema.text(textRepresentation, [mark]);
  return {
    type: 'pmnode',
    nodes: [textNode],
    length: match[0].length
  };
};
function unescape(url) {
  let result = '';
  for (let i = 0; i < url.length; i++) {
    const char = url[i];
    if (char !== '\\') {
      result += char;
      continue;
    }
    const nextChar = url[i + 1];
    if (nextChar) {
      result += nextChar;
      i++;
    }
  }
  return result;
}
function fallback(input, position) {
  return {
    type: 'text',
    text: input.substr(position, 1),
    length: 1
  };
}

// removes bad characters from the end of regex match
function trimBadEndChar(input) {
  return [
  // Ignored via go/ees005
  // eslint-disable-next-line require-unicode-regexp
  input[0].replace(/[.,>)\];}"\'!]*$/, ''), input[1],
  // Ignored via go/ees005
  // eslint-disable-next-line require-unicode-regexp
  input[2].replace(/[.,>)\];}"\'!]*$/, '')];
}