FreeMind to JSON

convert.js

var DOMParser = require('xmldom').DOMParser;
var fs = require('fs');
var path = require('path');

function convertBack(xml) {
  const parser = new DOMParser();
  const xmlDoc = parser.parseFromString(xml, 'text/xml');

  const jsonOutput = {};
  const rootNode = xmlDoc.getElementsByTagName('node')[0];
  const jsonFileName = rootNode.getAttribute('TEXT');

  function recur(node, obj) {
    let children = Array.from(node.childNodes).filter(n => n.nodeName === 'node');
    if (children.length > 0) {
      children.forEach(child => {
        const childKey = child.getAttribute('TEXT');
        if (child.childNodes.length === 1 && child.firstChild.nodeName === 'node') {
          // Single child node case, direct value
          obj[childKey] = child.firstChild.getAttribute('TEXT');
        } else {
          // Multiple children, nested object or array
          obj[childKey] = child.childNodes.length > 1 ? [] : {};
          recur(child, obj[childKey]);
        }
      });
    } else {
      return;
    }
  }

  // If the root has children, start the recursive process.
  if (rootNode.childNodes.length > 0) {
    jsonOutput[jsonFileName] = {};
    recur(rootNode, jsonOutput[jsonFileName]);
  }

  return JSON.stringify(jsonOutput, null, 2); // Returns pretty-printed JSON
}

function createJSONFromMindMap(sourceFilePath, targetFilePath) {
  if (!fs.existsSync(sourceFilePath)) throw ('Error: XML file does not exist');
  const xmlInput = fs.readFileSync(sourceFilePath, 'utf8');
  const jsonOutputData = convertBack(xmlInput);
  fs.writeFileSync(targetFilePath, jsonOutputData, { encoding: 'utf8' });
}

module.exports = {
  convertBack,
  createJSONFromMindMap
};