Function parseXML

scripts/rss-parser.js:1–159

(string)

function parseXML(string) {
  /*
   * Part 1
   *
   * Parse the xml into a DOM-like json
   *
   * Input: <tag attribute="value">text node<inline>text node</inline>text node</tag>
   *
   * Output:
   * {
   *   "name": "root",
   *   "children": [
   *     {
   *       "name": "tag",
   *       "attrs": {
   *         "attribute": "value"
   *       },
   *       "innerText": "text node text node",
   *       "children": [
   *         {
   *           "name": "inline",
   *           "attrs": {},
   *           "innerText": "text node",
   *           "children": []
   *         }
   *       ]
   *     }
   *   ]
   * }
   *
   */

  const parser = new XMLParser(string);

  // Root of xml
  const root = {
    name: "root",
    children: [],
  };

  // Store order for closing tags
  const stack = [root];

  // Create the new node and add it to the stack
  parser.didStartElement = (name, attrs) => {
    const node = {
      name,
      attrs,
      innerText: "",
      children: [],
    };

    stack.at(-1).children.push(node);
    stack.push(node);
  };

  // Add the inner text to the node
  parser.foundCharacters = (text) => {
    const node = stack.at(-1);
    node.innerText += node.innerText === "" ? text : " " + text;