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/*
Copyright 2011-2013 Abdulla Abdurakhmanov
Original sources are available at https://code.google.com/p/x2js/
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
function X2JS(config) {
'use strict';
var VERSION = "1.2.0";
config = config || {};
initConfigDefaults();
initRequiredPolyfills();
function initConfigDefaults() {
if(config.escapeMode === undefined) {
config.escapeMode = true;
}
config.attributePrefix = config.attributePrefix || "_";
config.arrayAccessForm = config.arrayAccessForm || "none";
config.emptyNodeForm = config.emptyNodeForm || "text";
if(config.enableToStringFunc === undefined) {
config.enableToStringFunc = true;
}
config.arrayAccessFormPaths = config.arrayAccessFormPaths || [];
if(config.skipEmptyTextNodesForObj === undefined) {
config.skipEmptyTextNodesForObj = true;
}
if(config.stripWhitespaces === undefined) {
config.stripWhitespaces = true;
}
config.datetimeAccessFormPaths = config.datetimeAccessFormPaths || [];
if(config.useDoubleQuotes === undefined) {
config.useDoubleQuotes = false;
}
config.xmlElementsFilter = config.xmlElementsFilter || [];
config.jsonPropertiesFilter = config.jsonPropertiesFilter || [];
if(config.keepCData === undefined) {
config.keepCData = false;
}
}
var DOMNodeTypes = {
ELEMENT_NODE : 1,
TEXT_NODE : 3,
CDATA_SECTION_NODE : 4,
COMMENT_NODE : 8,
DOCUMENT_NODE : 9
};
function initRequiredPolyfills() {
}
function getNodeLocalName( node ) {
var nodeLocalName = node.localName;
if(nodeLocalName == null) // Yeah, this is IE!!
nodeLocalName = node.baseName;
if(nodeLocalName == null || nodeLocalName=="") // =="" is IE too
nodeLocalName = node.nodeName;
return nodeLocalName;
}
function getNodePrefix(node) {
return node.prefix;
}
function escapeXmlChars(str) {
if(typeof(str) == "string")
return str.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&apos;');
else
return str;
}
function unescapeXmlChars(str) {
return str.replace(/&lt;/g, '<').replace(/&gt;/g, '>').replace(/&quot;/g, '"').replace(/&apos;/g, "'").replace(/&amp;/g, '&');
}
function checkInStdFiltersArrayForm(stdFiltersArrayForm, obj, name, path) {
var idx = 0;
for(; idx < stdFiltersArrayForm.length; idx++) {
var filterPath = stdFiltersArrayForm[idx];
if( typeof filterPath === "string" ) {
if(filterPath == path)
break;
}
else
if( filterPath instanceof RegExp) {
if(filterPath.test(path))
break;
}
else
if( typeof filterPath === "function") {
if(filterPath(obj, name, path))
break;
}
}
return idx!=stdFiltersArrayForm.length;
}
function toArrayAccessForm(obj, childName, path) {
switch(config.arrayAccessForm) {
case "property":
if(!(obj[childName] instanceof Array))
obj[childName+"_asArray"] = [obj[childName]];
else
obj[childName+"_asArray"] = obj[childName];
break;
/*case "none":
break;*/
}
if(!(obj[childName] instanceof Array) && config.arrayAccessFormPaths.length > 0) {
if(checkInStdFiltersArrayForm(config.arrayAccessFormPaths, obj, childName, path)) {
obj[childName] = [obj[childName]];
}
}
}
function fromXmlDateTime(prop) {
// Implementation based up on http://stackoverflow.com/questions/8178598/xml-datetime-to-javascript-date-object
// Improved to support full spec and optional parts
var bits = prop.split(/[-T:+Z]/g);
var d = new Date(bits[0], bits[1]-1, bits[2]);
var secondBits = bits[5].split("\.");
d.setHours(bits[3], bits[4], secondBits[0]);
if(secondBits.length>1)
d.setMilliseconds(secondBits[1]);
// Get supplied time zone offset in minutes
if(bits[6] && bits[7]) {
var offsetMinutes = bits[6] * 60 + Number(bits[7]);
var sign = /\d\d-\d\d:\d\d$/.test(prop)? '-' : '+';
// Apply the sign
offsetMinutes = 0 + (sign == '-'? -1 * offsetMinutes : offsetMinutes);
// Apply offset and local timezone
d.setMinutes(d.getMinutes() - offsetMinutes - d.getTimezoneOffset())
}
else
if(prop.indexOf("Z", prop.length - 1) !== -1) {
d = new Date(Date.UTC(d.getFullYear(), d.getMonth(), d.getDate(), d.getHours(), d.getMinutes(), d.getSeconds(), d.getMilliseconds()));
}
// d is now a local time equivalent to the supplied time
return d;
}
function checkFromXmlDateTimePaths(value, childName, fullPath) {
if(config.datetimeAccessFormPaths.length > 0) {
var path = fullPath.split("\.#")[0];
if(checkInStdFiltersArrayForm(config.datetimeAccessFormPaths, value, childName, path)) {
return fromXmlDateTime(value);
}
else
return value;
}
else
return value;
}
function checkXmlElementsFilter(obj, childType, childName, childPath) {
if( childType == DOMNodeTypes.ELEMENT_NODE && config.xmlElementsFilter.length > 0) {
return checkInStdFiltersArrayForm(config.xmlElementsFilter, obj, childName, childPath);
}
else
return true;
}
function parseDOMChildren( node, path ) {
if(node.nodeType == DOMNodeTypes.DOCUMENT_NODE) {
var result = new Object;
var nodeChildren = node.childNodes;
// Alternative for firstElementChild which is not supported in some environments
for(var cidx=0; cidx <nodeChildren.length; cidx++) {
var child = nodeChildren.item(cidx);
if(child.nodeType == DOMNodeTypes.ELEMENT_NODE) {
var childName = getNodeLocalName(child);
result[childName] = parseDOMChildren(child, childName);
}
}
return result;
}
else
if(node.nodeType == DOMNodeTypes.ELEMENT_NODE) {
var result = new Object;
result.__cnt=0;
var nodeChildren = node.childNodes;
// Children nodes
for(var cidx=0; cidx <nodeChildren.length; cidx++) {
var child = nodeChildren.item(cidx); // nodeChildren[cidx];
var childName = getNodeLocalName(child);
if(child.nodeType!= DOMNodeTypes.COMMENT_NODE) {
var childPath = path+"."+childName;
if (checkXmlElementsFilter(result,child.nodeType,childName,childPath)) {
result.__cnt++;
if(result[childName] == null) {
result[childName] = parseDOMChildren(child, childPath);
toArrayAccessForm(result, childName, childPath);
}
else {
if(result[childName] != null) {
if( !(result[childName] instanceof Array)) {
result[childName] = [result[childName]];
toArrayAccessForm(result, childName, childPath);
}
}
(result[childName])[result[childName].length] = parseDOMChildren(child, childPath);
}
}
}
}
// Attributes
for(var aidx=0; aidx <node.attributes.length; aidx++) {
var attr = node.attributes.item(aidx); // [aidx];
result.__cnt++;
result[config.attributePrefix+attr.name]=attr.value;
}
// Node namespace prefix
var nodePrefix = getNodePrefix(node);
if(nodePrefix!=null && nodePrefix!="") {
result.__cnt++;
result.__prefix=nodePrefix;
}
if(result["#text"]!=null) {
result.__text = result["#text"];
if(result.__text instanceof Array) {
result.__text = result.__text.join("\n");
}
//if(config.escapeMode)
// result.__text = unescapeXmlChars(result.__text);
if(config.stripWhitespaces)
result.__text = result.__text.trim();
delete result["#text"];
if(config.arrayAccessForm=="property")
delete result["#text_asArray"];
result.__text = checkFromXmlDateTimePaths(result.__text, childName, path+"."+childName);
}
if(result["#cdata-section"]!=null) {
result.__cdata = result["#cdata-section"];
delete result["#cdata-section"];
if(config.arrayAccessForm=="property")
delete result["#cdata-section_asArray"];
}
if( result.__cnt == 0 && config.emptyNodeForm=="text" ) {
result = '';
}
else
if( result.__cnt == 1 && result.__text!=null ) {
result = result.__text;
}
else
if( result.__cnt == 1 && result.__cdata!=null && !config.keepCData ) {
result = result.__cdata;
}
else
if ( result.__cnt > 1 && result.__text!=null && config.skipEmptyTextNodesForObj) {
if( (config.stripWhitespaces && result.__text=="") || (result.__text.trim()=="")) {
delete result.__text;
}
}
delete result.__cnt;
if( config.enableToStringFunc && (result.__text!=null || result.__cdata!=null )) {
result.toString = function() {
return (this.__text!=null? this.__text:'')+( this.__cdata!=null ? this.__cdata:'');
};
}
return result;
}
else
if(node.nodeType == DOMNodeTypes.TEXT_NODE || node.nodeType == DOMNodeTypes.CDATA_SECTION_NODE) {
return node.nodeValue;
}
}
function startTag(jsonObj, element, attrList, closed) {
var resultStr = "<"+ ( (jsonObj!=null && jsonObj.__prefix!=null)? (jsonObj.__prefix+":"):"") + element;
if(attrList!=null) {
for(var aidx = 0; aidx < attrList.length; aidx++) {
var attrName = attrList[aidx];
var attrVal = jsonObj[attrName];
if(config.escapeMode)
attrVal=escapeXmlChars(attrVal);
resultStr+=" "+attrName.substr(config.attributePrefix.length)+"=";
if(config.useDoubleQuotes)
resultStr+='"'+attrVal+'"';
else
resultStr+="'"+attrVal+"'";
}
}
if(!closed)
resultStr+=">";
else
resultStr+="/>";
return resultStr;
}
function endTag(jsonObj,elementName) {
return "</"+ (jsonObj.__prefix!=null? (jsonObj.__prefix+":"):"")+elementName+">";
}
function endsWith(str, suffix) {
return str.indexOf(suffix, str.length - suffix.length) !== -1;
}
function jsonXmlSpecialElem ( jsonObj, jsonObjField ) {
if((config.arrayAccessForm=="property" && endsWith(jsonObjField.toString(),("_asArray")))
|| jsonObjField.toString().indexOf(config.attributePrefix)==0
|| jsonObjField.toString().indexOf("__")==0
|| (jsonObj[jsonObjField] instanceof Function) )
return true;
else
return false;
}
function jsonXmlElemCount ( jsonObj ) {
var elementsCnt = 0;
if(jsonObj instanceof Object ) {
for( var it in jsonObj ) {
if(jsonXmlSpecialElem ( jsonObj, it) )
continue;
elementsCnt++;
}
}
return elementsCnt;
}
function checkJsonObjPropertiesFilter(jsonObj, propertyName, jsonObjPath) {
return config.jsonPropertiesFilter.length == 0
|| jsonObjPath==""
|| checkInStdFiltersArrayForm(config.jsonPropertiesFilter, jsonObj, propertyName, jsonObjPath);
}
function parseJSONAttributes ( jsonObj ) {
var attrList = [];
if(jsonObj instanceof Object ) {
for( var ait in jsonObj ) {
if(ait.toString().indexOf("__")== -1 && ait.toString().indexOf(config.attributePrefix)==0) {
attrList.push(ait);
}
}
}
return attrList;
}
function parseJSONTextAttrs ( jsonTxtObj ) {
var result ="";
if(jsonTxtObj.__cdata!=null) {
result+="<![CDATA["+jsonTxtObj.__cdata+"]]>";
}
if(jsonTxtObj.__text!=null) {
if(config.escapeMode)
result+=escapeXmlChars(jsonTxtObj.__text);
else
result+=jsonTxtObj.__text;
}
return result;
}
function parseJSONTextObject ( jsonTxtObj ) {
var result ="";
if( jsonTxtObj instanceof Object ) {
result+=parseJSONTextAttrs ( jsonTxtObj );
}
else
if(jsonTxtObj!=null) {
if(config.escapeMode)
result+=escapeXmlChars(jsonTxtObj);
else
result+=jsonTxtObj;
}
return result;
}
function getJsonPropertyPath(jsonObjPath, jsonPropName) {
if (jsonObjPath==="") {
return jsonPropName;
}
else
return jsonObjPath+"."+jsonPropName;
}
function parseJSONArray ( jsonArrRoot, jsonArrObj, attrList, jsonObjPath ) {
var result = "";
if(jsonArrRoot.length == 0) {
result+=startTag(jsonArrRoot, jsonArrObj, attrList, true);
}
else {
for(var arIdx = 0; arIdx < jsonArrRoot.length; arIdx++) {
result+=startTag(jsonArrRoot[arIdx], jsonArrObj, parseJSONAttributes(jsonArrRoot[arIdx]), false);
result+=parseJSONObject(jsonArrRoot[arIdx], getJsonPropertyPath(jsonObjPath,jsonArrObj));
result+=endTag(jsonArrRoot[arIdx],jsonArrObj);
}
}
return result;
}
function parseJSONObject ( jsonObj, jsonObjPath ) {
var result = "";
var elementsCnt = jsonXmlElemCount ( jsonObj );
if(elementsCnt > 0) {
for( var it in jsonObj ) {
if(jsonXmlSpecialElem ( jsonObj, it) || (jsonObjPath!="" && !checkJsonObjPropertiesFilter(jsonObj, it, getJsonPropertyPath(jsonObjPath,it))) )
continue;
var subObj = jsonObj[it];
var attrList = parseJSONAttributes( subObj )
if(subObj == null || subObj == undefined) {
result+=startTag(subObj, it, attrList, true);
}
else
if(subObj instanceof Object) {
if(subObj instanceof Array) {
result+=parseJSONArray( subObj, it, attrList, jsonObjPath );
}
else if(subObj instanceof Date) {
result+=startTag(subObj, it, attrList, false);
result+=subObj.toISOString();
result+=endTag(subObj,it);
}
else {
var subObjElementsCnt = jsonXmlElemCount ( subObj );
if(subObjElementsCnt > 0 || subObj.__text!=null || subObj.__cdata!=null) {
result+=startTag(subObj, it, attrList, false);
result+=parseJSONObject(subObj, getJsonPropertyPath(jsonObjPath,it));
result+=endTag(subObj,it);
}
else {
result+=startTag(subObj, it, attrList, true);
}
}
}
else {
result+=startTag(subObj, it, attrList, false);
result+=parseJSONTextObject(subObj);
result+=endTag(subObj,it);
}
}
}
result+=parseJSONTextObject(jsonObj);
return result;
}
this.parseXmlString = function(xmlDocStr) {
var isIEParser = window.ActiveXObject || "ActiveXObject" in window;
if (xmlDocStr === undefined) {
return null;
}
var xmlDoc;
if (window.DOMParser) {
var parser=new window.DOMParser();
var parsererrorNS = null;
// IE9+ now is here
if(!isIEParser) {
try {
parsererrorNS = parser.parseFromString("INVALID", "text/xml").getElementsByTagName("parsererror")[0].namespaceURI;
}
catch(err) {
parsererrorNS = null;
}
}
try {
xmlDoc = parser.parseFromString( xmlDocStr, "text/xml" );
if( parsererrorNS!= null && xmlDoc.getElementsByTagNameNS(parsererrorNS, "parsererror").length > 0) {
//throw new Error('Error parsing XML: '+xmlDocStr);
xmlDoc = null;
}
}
catch(err) {
xmlDoc = null;
}
}
else {
// IE :(
if(xmlDocStr.indexOf("<?")==0) {
xmlDocStr = xmlDocStr.substr( xmlDocStr.indexOf("?>") + 2 );
}
xmlDoc=new ActiveXObject("Microsoft.XMLDOM");
xmlDoc.async="false";
xmlDoc.loadXML(xmlDocStr);
}
return xmlDoc;
};
this.asArray = function(prop) {
if (prop === undefined || prop == null)
return [];
else
if(prop instanceof Array)
return prop;
else
return [prop];
};
this.toXmlDateTime = function(dt) {
if(dt instanceof Date)
return dt.toISOString();
else
if(typeof(dt) === 'number' )
return new Date(dt).toISOString();
else
return null;
};
this.asDateTime = function(prop) {
if(typeof(prop) == "string") {
return fromXmlDateTime(prop);
}
else
return prop;
};
this.xml2json = function (xmlDoc) {
return parseDOMChildren ( xmlDoc );
};
this.xml_str2json = function (xmlDocStr) {
var xmlDoc = this.parseXmlString(xmlDocStr);
if(xmlDoc!=null)
return this.xml2json(xmlDoc);
else
return null;
};
this.json2xml_str = function (jsonObj) {
return parseJSONObject ( jsonObj, "" );
};
this.json2xml = function (jsonObj) {
var xmlDocStr = this.json2xml_str (jsonObj);
return this.parseXmlString(xmlDocStr);
};
this.getVersion = function () {
return VERSION;
};
}