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var expat = require('node-expat'); var fs = require('fs'); // This object will hold the final result.

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var obj = currentObject = {};

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var ancestors = [];

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var options = {}; //configuration options

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function startElement(name, attrs) {

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if (! (name in currentObject)) { currentObject[name] = attrs; } else if (! (currentObject[name] instanceof Array)) { // 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); }

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// Store the current (old) parent. ancestors.push(currentObject);

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// We are now working with this object, so it becomes the current parent. if (currentObject[name] instanceof Array) { // 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]; }

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}

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function text(data) {

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data = data.trim(); if (!data.length) { return; }

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currentObject['$t'] = data;

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} 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();

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if (!options.reversible) { if ((Object.keys(currentObject).length == 1) && ('$t' in currentObject)) { if (ancestor[name] instanceof Array) { //console.log("list-replacing $t in " + name); ancestor[name].push(ancestor[name].pop()['$t']); } else { //console.log("replacing $t in " + name); ancestor[name] = currentObject['$t']; }

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} else {

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//console.log("final " + name + ":"); //console.log(currentObject);

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} }

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currentObject = ancestor;

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}

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module.exports.toJson = function(xml, _options) {

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var parser = new expat.Parser('UTF-8'); parser.on('startElement', startElement); parser.on('text', text); parser.on('endElement', endElement); obj = currentObject = {}; ancestors = [];

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options = { object: false, reversible: false

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};

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for (var opt in _options) { options[opt] = _options[opt]; }

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if (!parser.parse(xml)) { console.log('-->'+ xml + '<--'); throw new Error('There are errors in your xml file: ' + parser.getError()); } if (options.object) { return obj;

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}

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return JSON.stringify(obj);

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};