var expat = require('node-expat'); var fs = require('fs'); // This object will hold the final result. var obj = currentObject = {}; var ancestors = []; var options = {}; //configuration options function startElement(name, attrs) { if (! (name in currentObject)) { currentObject[name] = attrs;

} else if (!Array.isArray(currentObject[name])) {

// Put the existing object in an array. var newArray = [currentObject[name]]; // Add the new object to the array. newArray.push(attrs); // Point to the new array. currentObject[name] = newArray; } else { // An array already exists, push the attributes on to it. currentObject[name].push(attrs); } // Store the current (old) parent. ancestors.push(currentObject); // We are now working with this object, so it becomes the current parent.

if (Array.isArray(currentObject[name])) {

// If it is an array, get the last element of the array. currentObject = currentObject[name][currentObject[name].length - 1]; } else { // Otherwise, use the object itself. currentObject = currentObject[name]; } } function text(data) { data = data.trim(); if (!data.length) { return; }

currentObject['$t'] = (currentObject['$t'] || '') + data;

} function endElement(name) {

// This should check to make sure that the name we're ending

// matches the name we started on. var ancestor = ancestors.pop(); if (!options.reversible) {

if ((Object.keys(currentObject).length == 1) && ('$t' in currentObject)) { if (Array.isArray(ancestor[name])) {

ancestor[name].push(ancestor[name].pop()['$t']); } else { ancestor[name] = currentObject['$t']; } } } currentObject = ancestor; }

/** * Parses xml to json using node-expat. * @param {String|Buffer} xml The xml to be parsed to json. * @param {Object} _options An object with options provided by the user. * The available options are: * - object: If true, the parser returns a Javascript object instead of * a JSON string. * - reversible: If true, the parser generates a reversible JSON, mainly * characterized by the presence of the property $t. * - sanitize_values: If true, the parser escapes any element value in the xml * that matches one of the following characters: * character | escaped * < &lt; * > &gt; * ( &#40; * ) &#41; * # &#35; * & &amp; * " &quot; * ' &apos;. * @return {String|Object} A String or an Object with the JSON representation * of the XML. **/

module.exports = function(xml, _options) { var parser = new expat.Parser('UTF-8'); parser.on('startElement', startElement); parser.on('text', text); parser.on('endElement', endElement); obj = currentObject = {}; ancestors = []; options = { object: false,

reversible: false, sanitize_values: false

}; for (var opt in _options) { options[opt] = _options[opt]; } if (!parser.parse(xml)) {

//console.log('-->' + xml + '<--'); throw new Error('There are errors in your xml file: ' + parser.getError());

} if (options.object) { return obj; } return JSON.stringify(obj); };