Format URLs

script

const urlRe = /((([A-Za-z]{3,9}:(?:\/\/)?)(?:[\-;:&=\+\$,\w]+@)?[A-Za-z0-9\.\-]+|(?:www\.|[\-;:&=\+\$,\w]+@)[A-Za-z0-9\.\-]+)((?:\/[\+~%\/\.\w\-_]*)?\??(?:[\-\+=&;%@\.\w_]*)#?(?:[\.\!\/\\\w]*))?)/g;
const titleRe = /<title>(.*?)<\/title>/i;

// fetch the full text from the editor
let fullText = editor.getText();
let lines = fullText.split("\n");
let firstLine = lines.shift();
let newText = "";

// create a HTTP object
let http = HTTP.create();

let firstLineMatches = firstLine.match(urlRe);
if (firstLineMatches) {
  // only get title of first URL in first line
  let response = http.request({
    "url": firstLineMatches[0],
    "method": "GET"
  });

  if (response.success) {
    let titleMatch = response.responseText.match(titleRe);
    if (titleMatch) {
      let title = titleMatch[1].replace(/[<>:"/\\|?*]+/g, ''); // sanitize title
      newText += title + "\n"; // add sanitized title as first line
      firstLine = firstLine.replace(firstLineMatches[0], `[${title}](${firstLineMatches[0]})`); // replace URL with markdown in first line
    } else {
      context.fail("Failed to find title in response");
    }
  } else {
    context.fail("HTTP request failed");
  }
}

newText += firstLine + "\n"; // add first line to new text

// process the rest of the lines
for(let line of lines) {
  let matches = line.match(urlRe);
  if (matches) {
    for(let url of matches) {
      // make HTTP get request to fetch page
      let response = http.request({
        "url": url,
        "method": "GET"
      });

      if (response.success) {
        let titleMatch = response.responseText.match(titleRe);
        if (titleMatch) {
          line = line.replace(url, `[${titleMatch[1]}](${url})`);
        } else {
          context.fail("Failed to find title in response");
        }
      } else {
        context.fail("HTTP request failed");
      }
    }
  }

  newText += line + "\n"; // add processed line to new text
}

// replace the text in the editor with the new text
editor.setText(newText);