var sanitizer = require('./sanitize.js') module.exports = function toXml(json, options) { if (json instanceof Buffer) { json = json.toString(); } var obj = null; if (typeof(json) == 'string') { try { obj = JSON.parse(json); } catch(e) { throw new Error("The JSON structure is invalid"); } } else { obj = json; } var toXml = new ToXml(options); toXml.parse(obj); return toXml.xml; } ToXml.prototype.parse = function(obj) { var self = this; var keys = Object.keys(obj); var len = keys.length; // First pass, extract strings only for (var i = 0; i < len; i++) { var key = keys[i], value = obj[key], isArray = Array.isArray(value); var type = typeof(value); if (type == 'string' || type == 'number' || type == 'boolean' || isArray) { var it = isArray ? value : [value]; it.forEach(function(subVal) { if (typeof(subVal) != 'object') { if (key == '$t') { self.addTextContent(subVal); } else { self.addAttr(key, subVal); } } }); } } // Second path, now handle sub-objects and arrays for (var i = 0; i < len; i++) { var key = keys[i]; if (Array.isArray(obj[key])) { var elems = obj[key]; var l = elems.length; for (var j = 0; j < l; j++) { var elem = elems[j]; if (typeof(elem) == 'object') { self.openTag(key); self.parse(elem); self.closeTag(key); } } } else if (typeof(obj[key]) == 'object') { self.openTag(key); self.parse(obj[key]); self.closeTag(key); } } }; ToXml.prototype.openTag = function(key) { this.completeTag(); this.xml += '<' + key; this.tagIncomplete = true; } ToXml.prototype.addAttr = function(key, val) { if (this.options.sanitize) { val = sanitizer.sanitize(val) } this.xml += ' ' + key + '="' + val + '"'; } ToXml.prototype.addTextContent = function(text) { this.completeTag(); this.xml += text; } ToXml.prototype.closeTag = function(key) { this.completeTag(); this.xml += ''; } ToXml.prototype.completeTag = function() { if (this.tagIncomplete) { this.xml += '>'; this.tagIncomplete = false; } } function ToXml(options) { var defaultOpts = { sanitize: false }; if (options) { for (var opt in options) { defaultOpts[opt] = options[opt]; } } this.options = defaultOpts; this.xml = ''; this.tagIncomplete = false; }