XMLUtils.java 26.2 KB
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/*
 * Decompiled with CFR 0_118.
 * 
 * Could not load the following classes:
 *  com.adobe.forms.common.service.FormDataXMLProviderRegistry
 *  com.adobe.granite.resourceresolverhelper.ResourceResolverHelper
 *  javax.jcr.Binary
 *  javax.jcr.Node
 *  javax.jcr.PathNotFoundException
 *  javax.jcr.Property
 *  javax.jcr.RepositoryException
 *  org.apache.commons.io.IOUtils
 *  org.apache.commons.lang3.StringUtils
 *  org.apache.sling.api.resource.NonExistingResource
 *  org.apache.sling.api.resource.Resource
 *  org.apache.sling.api.resource.ResourceResolver
 *  org.apache.sling.commons.json.JSONException
 *  org.apache.sling.commons.json.JSONObject
 *  org.apache.sling.commons.json.xml.XML
 *  org.slf4j.Logger
 *  org.slf4j.LoggerFactory
 */
package com.adobe.aemds.guide.utils;

import com.adobe.aemds.guide.service.GuideException;
import com.adobe.forms.common.service.FormDataXMLProviderRegistry;
import com.adobe.granite.resourceresolverhelper.ResourceResolverHelper;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.Reader;
import java.io.StringReader;
import java.io.StringWriter;
import java.io.UnsupportedEncodingException;
import java.io.Writer;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
import javax.jcr.Binary;
import javax.jcr.Node;
import javax.jcr.PathNotFoundException;
import javax.jcr.Property;
import javax.jcr.RepositoryException;
import javax.xml.namespace.QName;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;
import javax.xml.xpath.XPath;
import javax.xml.xpath.XPathConstants;
import javax.xml.xpath.XPathExpressionException;
import javax.xml.xpath.XPathFactory;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.apache.sling.api.resource.NonExistingResource;
import org.apache.sling.api.resource.Resource;
import org.apache.sling.api.resource.ResourceResolver;
import org.apache.sling.commons.json.JSONException;
import org.apache.sling.commons.json.JSONObject;
import org.apache.sling.commons.json.xml.XML;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.w3c.dom.Attr;
import org.w3c.dom.Document;
import org.w3c.dom.DocumentFragment;
import org.w3c.dom.Element;
import org.w3c.dom.NodeList;
import org.w3c.dom.Text;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/*
 * This class specifies class file version 49.0 but uses Java 6 signatures.  Assumed Java 6.
 */
public class XMLUtils {
    private static Logger logger = LoggerFactory.getLogger(XMLUtils.class);
    public static final String xmlSkeleton = "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<afData>\n  <afUnboundData>\n    <data></data>\n  </afUnboundData>\n  <afBoundData>\n    <data xmlns:xfa=\"http://www.xfa.org/schema/xfa-data/1.0/\"></data>\n  </afBoundData>\n</afData>\n";

    public static boolean checkIfStringHasIndexOperator(String bindRef) {
        boolean bContainsIndex = false;
        if (StringUtils.contains((CharSequence)bindRef, (CharSequence)"[")) {
            bContainsIndex = true;
        }
        return bContainsIndex;
    }

    public static String extractXsdRootElement(JSONObject guideJson) {
        String xsdRootEl = "";
        try {
            if (guideJson.has("xsdRootElement")) {
                xsdRootEl = guideJson.getString("xsdRootElement");
            } else {
                logger.debug("Unable to find xsdRootElement in guide JSON");
            }
        }
        catch (JSONException ex) {
            logger.debug("Unable to read xsdRootElement from guide JSON", (Throwable)ex);
        }
        return xsdRootEl;
    }

    public static String getXSDRootBindRef(JSONObject jsonObject, String xsdRoot) throws JSONException {
        String effectiveBindRef = "";
        if (XMLUtils.isXsd(jsonObject)) {
            effectiveBindRef = XMLUtils.getRelativeXpath(jsonObject.optString("bindRef", ""), xsdRoot);
        }
        return effectiveBindRef;
    }

    public static String getRelativeXpath(String bindRef, String root) {
        String xpath = "";
        if (StringUtils.isNotBlank((CharSequence)bindRef)) {
            xpath = bindRef;
            if (XMLUtils.isValidXsdRoot(root) && xpath.matches("/" + root + "(?:/.+)?") || StringUtils.equals((CharSequence)root, (CharSequence)"?")) {
                xpath = xpath.replaceFirst("^/[^/]+", "");
            }
        }
        return StringUtils.removeStart((String)xpath, (String)"/");
    }

    public static String getXMLfromXsdDom(Element doc) {
        return XMLUtils.getXMLfromXsdDom(doc, false);
    }

    public static String getXMLfromXsdDom(Element doc, Boolean omitXmlDeclaration) {
        String xsdValue = "";
        try {
            if (doc != null) {
                TransformerFactory transfac = TransformerFactory.newInstance();
                Transformer trans = transfac.newTransformer();
                trans.setOutputProperty("omit-xml-declaration", omitXmlDeclaration != false ? "yes" : "no");
                trans.setOutputProperty("method", "xml");
                trans.setOutputProperty("indent", "yes");
                trans.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", Integer.toString(2));
                StringWriter sw = new StringWriter();
                StreamResult result = new StreamResult(sw);
                DOMSource source = new DOMSource(doc);
                trans.transform(source, result);
                xsdValue = sw.toString();
            }
        }
        catch (Exception e) {
            throw new GuideException(e);
        }
        return xsdValue;
    }

    public static void addChildNodesOfParentUnderRoot(org.w3c.dom.Node parent, org.w3c.dom.Node root) {
        Document document = root.getOwnerDocument();
        NodeList children = parent.getChildNodes();
        int length = children.getLength();
        for (int i = 0; i < length; ++i) {
            org.w3c.dom.Node child = children.item(i);
            if (child.getNodeType() != 1) continue;
            root.appendChild(document.importNode(child, true));
        }
    }

    public static String getDorDataXmlPart(Document dorDoc, Document doc, String excludeFromDorIfHidden, boolean bSetXfaNameSpace) {
        try {
            Element nakedExcludeFromDoRXml;
            Element nakedBoundXml;
            org.w3c.dom.Node root = null;
            if (bSetXfaNameSpace) {
                root = dorDoc.createElement("data");
                XMLUtils.setXfaNameSpace((Element)root);
            } else {
                root = dorDoc.importNode(XMLUtils.getBoundDataXmlElement(doc), false);
            }
            Element nakedUnBoundXml = XMLUtils.getUnboundDataXmlElement(doc);
            if (nakedUnBoundXml != null) {
                XMLUtils.addChildNodesOfParentUnderRoot(nakedUnBoundXml, root);
            }
            if ((nakedBoundXml = XMLUtils.getBoundDataXmlElement(doc)) != null) {
                XMLUtils.addChildNodesOfParentUnderRoot(nakedBoundXml, root);
            }
            if ((nakedExcludeFromDoRXml = XMLUtils.getSubmissionInfoDataXmlElement(doc, "excludeFromDoR")) != null) {
                root.appendChild(dorDoc.importNode(nakedExcludeFromDoRXml, true));
            }
            return XMLUtils.getXMLfromXsdDom((Element)root);
        }
        catch (Exception e) {
            throw new GuideException("Error in getting dor data xml " + e.getMessage(), e);
        }
    }

    public static Element getSubmissionInfoDataXmlElement(Document doc, String submitInfoPart) {
        try {
            if (XMLUtils.isWrappedXml(doc)) {
                XPath xPath = XPathFactory.newInstance().newXPath();
                String xPathString = "afSubmissionInfo";
                xPathString = submitInfoPart != null && submitInfoPart.length() > 0 ? xPathString + "/" + submitInfoPart : xPathString + "/*";
                org.w3c.dom.Node afSubmissionInfo = (org.w3c.dom.Node)xPath.evaluate(xPathString, doc.getDocumentElement(), XPathConstants.NODE);
                return (Element)afSubmissionInfo;
            }
            return null;
        }
        catch (Exception e) {
            throw new GuideException("Error in getting bound xml part" + e.getMessage(), e);
        }
    }

    public static String getSubmissionInfoDataXmlPart(Document doc, String submitInfoPart) {
        return XMLUtils.getXMLfromXsdDom(XMLUtils.getSubmissionInfoDataXmlElement(doc, submitInfoPart));
    }

    public static void setXfaNameSpace(Element data) {
        if (data != null) {
            data.setAttribute("xmlns:xfa", "http://www.xfa.org/schema/xfa-data/1.0/");
        }
    }

    public static String getBoundDataXmlPart(Document doc) {
        return XMLUtils.getXMLfromXsdDom(XMLUtils.getBoundDataXmlElement(doc));
    }

    public static Element getBoundDataXmlElement(Document doc) {
        try {
            if (XMLUtils.isWrappedXml(doc)) {
                XPath xPath = XPathFactory.newInstance().newXPath();
                org.w3c.dom.Node afBoundData = (org.w3c.dom.Node)xPath.evaluate("afBoundData/*", doc.getDocumentElement(), XPathConstants.NODE);
                return (Element)afBoundData;
            }
            return doc.getDocumentElement();
        }
        catch (Exception e) {
            throw new GuideException("Error in getting bound xml part" + e.getMessage(), e);
        }
    }

    public static String getUnboundDataXmlPart(Document doc) {
        return XMLUtils.getXMLfromXsdDom(XMLUtils.getUnboundDataXmlElement(doc));
    }

    public static Element getUnboundDataXmlElement(Document doc) {
        try {
            if (XMLUtils.isWrappedXml(doc)) {
                XPath xPath = XPathFactory.newInstance().newXPath();
                org.w3c.dom.Node afUnboundData = (org.w3c.dom.Node)xPath.evaluate("afUnboundData/*", doc.getDocumentElement(), XPathConstants.NODE);
                return (Element)afUnboundData;
            }
            return doc.getDocumentElement();
        }
        catch (Exception e) {
            throw new GuideException("Error in getting unbound xml part" + e.getMessage(), e);
        }
    }

    public static JSONObject getMapOfUnboundData(Document doc) {
        JSONObject xmlJSONObj = null;
        try {
            String jsonStr = XML.toJSONObject((String)XMLUtils.getUnboundDataXmlPart(doc).trim()).toString().replaceAll("(\\\\r)?\\\\n", "\\\\n");
            xmlJSONObj = new JSONObject(jsonStr);
        }
        catch (Exception e) {
            throw new GuideException("Error in getting map of unbound data" + e.getMessage(), e);
        }
        return xmlJSONObj;
    }

    public static String getPrefillXmlWithoutBoundPart(Document doc) {
        try {
            if (XMLUtils.isWrappedXml(doc)) {
                XPath xPath = XPathFactory.newInstance().newXPath();
                org.w3c.dom.Node afBoundData = (org.w3c.dom.Node)xPath.evaluate("afBoundData", doc.getDocumentElement(), XPathConstants.NODE);
                if (afBoundData != null) {
                    doc.getDocumentElement().removeChild(afBoundData);
                }
                return XMLUtils.getXMLfromXsdDom(doc.getDocumentElement());
            }
            return XMLUtils.getXMLfromXsdDom(doc.getDocumentElement());
        }
        catch (Exception e) {
            throw new GuideException("Error in getting bound xml part" + e.getMessage(), e);
        }
    }

    public static String getXMLFromDom(Document doc, String tagName) {
        try {
            XPath xPath = XPathFactory.newInstance().newXPath();
            org.w3c.dom.Node xmlNode = (org.w3c.dom.Node)xPath.evaluate(tagName + "/*", doc.getDocumentElement(), XPathConstants.NODE);
            return XMLUtils.getXMLfromXsdDom((Element)xmlNode);
        }
        catch (Exception e) {
            throw new GuideException("Error in Getting XML of the element <" + tagName + "> From DOM", e);
        }
    }

    @Deprecated
    public static InputStream getDataRefInputStream(String dataRef, FormDataXMLProviderRegistry formDataXMLProviderRegistry, ResourceResolverHelper resourceResolverHelper) {
        String xml = null;
        try {
            if (dataRef.startsWith("crx://")) {
                Resource fileResource = resourceResolverHelper.getResourceResolver().resolve(dataRef.substring(6));
                Node jcrNode = (Node)fileResource.adaptTo(Node.class);
                Node jcrContent = jcrNode.getNode("jcr:content");
                InputStream is = jcrContent.getProperty("jcr:data").getBinary().getStream();
                return is;
            }
            if (!(dataRef.startsWith("https://") || dataRef.startsWith("http://") || dataRef.startsWith("file://"))) {
                xml = formDataXMLProviderRegistry.getDataXMLFromService(dataRef);
                logger.info("[AEMForm] XML Recieved from Prefill Service = " + xml);
                if (xml != null && xml.length() > 0) {
                    return new ByteArrayInputStream(xml.getBytes("UTF-8"));
                }
                return null;
            }
            URL url = new URL(dataRef);
            InputStream in = url.openStream();
            return in;
        }
        catch (PathNotFoundException e) {
            logger.error("[AEMForm] unable to locate Data XML in the repository " + dataRef + ": " + e.getMessage(), (Throwable)e);
        }
        catch (RepositoryException e) {
            logger.error("[AEMForm] Exception while reading Data XML in the repository " + dataRef + ": " + e.getMessage(), (Throwable)e);
        }
        catch (UnsupportedEncodingException e) {
            logger.error("[AEMForm] Unable to read xml using UTF-8 encoding for the " + dataRef + "," + xml + ": " + e.getMessage(), (Throwable)e);
        }
        catch (MalformedURLException e) {
            logger.error("[AEMForm] Malformed URL passed for getting the xml " + dataRef + ": " + e.getMessage(), (Throwable)e);
        }
        catch (IOException e) {
            logger.error("[AEMForm] Unable to read from the dataRef URL " + dataRef + ": " + e.getMessage(), (Throwable)e);
        }
        return null;
    }

    @Deprecated
    public static Document exportDocumentFromDataRef(String dataRef, DocumentBuilder builder, FormDataXMLProviderRegistry formDataXMLProviderRegistry, ResourceResolverHelper resourceResolverHelper) throws Exception {
        Document doc = null;
        if (dataRef.startsWith("crx://")) {
            Resource fileResource = resourceResolverHelper.getResourceResolver().resolve(dataRef.substring(6));
            if (fileResource instanceof NonExistingResource) {
                return null;
            }
            Node jcrNode = (Node)fileResource.adaptTo(Node.class);
            Node jcrContent = jcrNode.getNode("jcr:content");
            InputStream is = jcrContent.getProperty("jcr:data").getBinary().getStream();
            byte[] fileBytes = IOUtils.toByteArray((InputStream)is);
            is.close();
            doc = builder.parse(new ByteArrayInputStream(fileBytes));
        } else if (!(dataRef.startsWith("https://") || dataRef.startsWith("http://") || dataRef.startsWith("file://"))) {
            InputSource inputSource = new InputSource(new StringReader(formDataXMLProviderRegistry.getDataXMLFromService(dataRef)));
            doc = builder.parse(inputSource);
        }
        if (doc == null) {
            URL url = new URL(dataRef);
            InputStream in = url.openStream();
            doc = builder.parse(in);
            in.close();
        }
        return doc;
    }

    public static org.w3c.dom.Node createNode(Document dataDoc, XPath xPath, org.w3c.dom.Node node, String path) throws XPathExpressionException {
        Document document = dataDoc;
        String[] pathTokens = path.split("/");
        org.w3c.dom.Node currentNode = node;
        int pathTokensSize = pathTokens.length;
        for (int i = 0; i < pathTokensSize; ++i) {
            Element elNode;
            String pathToken = pathTokens[i];
            boolean isLastToken = i == pathTokensSize - 1;
            org.w3c.dom.Node newNode = (org.w3c.dom.Node)xPath.evaluate(pathToken, currentNode, XPathConstants.NODE);
            if (newNode == null) {
                if (pathToken.charAt(0) == '@') {
                    Attr newAttribute = document.createAttribute(pathToken.substring(1));
                    ((Element)currentNode).setAttributeNode(newAttribute);
                    newNode = newAttribute;
                } else if ("text()".equals(pathToken)) {
                    Text textNode = document.createTextNode(null);
                    currentNode.appendChild(textNode);
                    newNode = textNode;
                } else {
                    if (XMLUtils.checkIfStringHasIndexOperator(pathToken)) {
                        pathToken = StringUtils.substringBefore((String)pathToken, (String)"[");
                    }
                    elNode = document.createElement(pathToken);
                    currentNode.appendChild(elNode);
                    newNode = elNode;
                }
            } else if (isLastToken && pathToken.charAt(0) != '@' && !"text()".equals(pathToken)) {
                elNode = document.createElement(pathToken);
                currentNode.appendChild(elNode);
                newNode = elNode;
            }
            currentNode = newNode;
        }
        return currentNode;
    }

    public static void addToDocument(Document dataDoc, XPath xPath, org.w3c.dom.Node currentNode, String path, String value) {
        try {
            org.w3c.dom.Node toUpdate = (org.w3c.dom.Node)xPath.evaluate(path, currentNode, XPathConstants.NODE);
            if (toUpdate == null) {
                toUpdate = XMLUtils.createNode(dataDoc, xPath, currentNode, path);
            }
            switch (toUpdate.getNodeType()) {
                case 2: {
                    ((Attr)toUpdate).setValue(value);
                    break;
                }
                case 1: {
                    toUpdate.setTextContent(value);
                    break;
                }
                case 3: {
                    toUpdate.setNodeValue(value);
                    break;
                }
            }
        }
        catch (XPathExpressionException ex) {
            logger.warn("Invalid Xpath Syntax: " + path, (Throwable)ex);
        }
        catch (Exception e) {
            logger.error(e.getMessage(), (Throwable)e);
            throw new GuideException(e);
        }
    }

    public static boolean isXsd(JSONObject obj) {
        String bindRef = obj.optString("bindRef");
        return StringUtils.isNotBlank((CharSequence)bindRef) && StringUtils.startsWith((CharSequence)bindRef, (CharSequence)"/");
    }

    public static boolean isWrappedXml(Document doc) {
        try {
            return "afData".equals(doc.getDocumentElement().getTagName());
        }
        catch (Exception e) {
            logger.debug("Error while trying to check document root tag : " + e.getMessage(), (Throwable)e);
            return false;
        }
    }

    public static boolean isWrappedXmlStr(String docStr) {
        if (StringUtils.isNotBlank((CharSequence)docStr)) {
            try {
                Document doc = DocumentBuilderFactory.newInstance().newDocumentBuilder().parse(new InputSource(new StringReader(docStr)));
                return XMLUtils.isWrappedXml(doc);
            }
            catch (SAXException e) {
                logger.error("Error while parsing Guide Prefill Xml String : " + e.getMessage(), (Throwable)e);
            }
            catch (IOException e) {
                logger.error("Error while parsing Guide Prefill Xml String : " + e.getMessage(), (Throwable)e);
            }
            catch (ParserConfigurationException e) {
                logger.error("Error while parsing Guide Prefill Xml String : " + e.getMessage(), (Throwable)e);
            }
        }
        return false;
    }

    public static boolean isValidXsdRoot(String root) {
        return StringUtils.isNotBlank((CharSequence)root) && root.matches("[a-zA-Z].*");
    }

    public static Document getEmptySubmitDoc() {
        Document doc = XMLUtils.strToDoc("<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<afData>\n  <afUnboundData>\n    <data></data>\n  </afUnboundData>\n  <afBoundData>\n    <data xmlns:xfa=\"http://www.xfa.org/schema/xfa-data/1.0/\"></data>\n  </afBoundData>\n</afData>\n");
        if (!(doc instanceof Document)) {
            logger.debug("Unable to Generate Empty Xml Doc");
            return null;
        }
        return doc;
    }

    public static String getChildBoundRootXpath(String fsRoot, String bindRefPrefix, String childRoot) {
        String xpath = "";
        if (StringUtils.isBlank((CharSequence)bindRefPrefix)) {
            if (XMLUtils.isValidXsdRoot(childRoot) && !StringUtils.equals((CharSequence)fsRoot, (CharSequence)childRoot)) {
                xpath = childRoot;
            }
        } else {
            xpath = XMLUtils.getRelativeXpath(bindRefPrefix, fsRoot);
        }
        return xpath;
    }

    public static Object evaluateXPath(String xPathQuery, org.w3c.dom.Node contextNode, QName type) {
        try {
            if (StringUtils.isBlank((CharSequence)xPathQuery)) {
                return contextNode;
            }
            XPathFactory xpFactory = XPathFactory.newInstance();
            XPath xPath = xpFactory.newXPath();
            return xPath.evaluate(xPathQuery, contextNode, type);
        }
        catch (XPathExpressionException e) {
            logger.debug("Unable to evaluate XPath" + xPathQuery, (Throwable)e);
            return null;
        }
    }

    public static void copyChildren(org.w3c.dom.Node source, org.w3c.dom.Node target) {
        if (source == null || target == null) {
            return;
        }
        Document destination = target.getOwnerDocument();
        DocumentFragment container = destination.createDocumentFragment();
        NodeList children = source.getChildNodes();
        int length = children.getLength();
        for (int i = 0; i < length; ++i) {
            container.appendChild(destination.importNode(children.item(i), true));
        }
        target.appendChild(container);
    }

    public static Document getChildXmlDoc(Element fsUnBoundDataRoot, Element fsBoundDataRoot, String childBoundRootXpath, boolean keepBoundPart) {
        Document childDoc = XMLUtils.getEmptySubmitDoc();
        XMLUtils.copyChildren(fsUnBoundDataRoot, XMLUtils.getUnboundDataXmlElement(childDoc));
        if (keepBoundPart) {
            Element childBoundRoot = (Element)XMLUtils.evaluateXPath(childBoundRootXpath, fsBoundDataRoot, XPathConstants.NODE);
            if (childBoundRoot == null) {
                childBoundRoot = fsBoundDataRoot;
            }
            XMLUtils.copyChildren(childBoundRoot, XMLUtils.getBoundDataXmlElement(childDoc));
        }
        return childDoc;
    }

    public static void createAttachmentTag(Document document, org.w3c.dom.Node fileComponentNode, JSONObject jsonObject) {
        try {
            JSONObject commentsJson;
            Element fileAttachments = document.createElement("fileAttachment");
            fileComponentNode.appendChild(fileAttachments);
            fileAttachments.setTextContent(jsonObject.getString("files"));
            JSONObject items = jsonObject.getJSONObject("items");
            if (items.has("comment") && (commentsJson = items.getJSONObject("comment")).has("_value")) {
                Element comments = document.createElement("comment");
                comments.setTextContent(commentsJson.getString("_value"));
                fileComponentNode.appendChild(comments);
            }
        }
        catch (Exception e) {
            logger.error("Error in creating file attachment tag", (Throwable)e);
        }
    }

    public static String docToStr(Document doc) {
        String xmlStr = "";
        try {
            if (doc != null) {
                TransformerFactory transfac = TransformerFactory.newInstance();
                Transformer trans = transfac.newTransformer();
                trans.setOutputProperty("omit-xml-declaration", "no");
                trans.setOutputProperty("method", "xml");
                trans.setOutputProperty("indent", "yes");
                trans.setOutputProperty("{http://xml.apache.org/xslt}indent-amount", Integer.toString(2));
                StringWriter sw = new StringWriter();
                StreamResult result = new StreamResult(sw);
                DOMSource source = new DOMSource(doc);
                trans.transform(source, result);
                xmlStr = sw.toString();
            }
        }
        catch (Exception e) {
            logger.error("Exception while converting document to xml", (Throwable)e);
        }
        return xmlStr;
    }

    public static Document strToDoc(String xmlStr) {
        Document doc = null;
        try {
            DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
            DocumentBuilder dBuilder = dbFactory.newDocumentBuilder();
            doc = dBuilder.parse(new InputSource(new StringReader(xmlStr)));
            doc.getDocumentElement().normalize();
        }
        catch (Exception e) {
            logger.debug("Unable to Generate Xml Doc from String : " + xmlStr, (Throwable)e);
        }
        return doc;
    }

    public static List<String> extractAttachmentNames(Document doc) {
        ArrayList<String> attachmentNames = new ArrayList<String>();
        NodeList attachments = (NodeList)XMLUtils.evaluateXPath("//fileAttachment", doc.getDocumentElement(), XPathConstants.NODESET);
        if (attachments != null) {
            int length = attachments.getLength();
            for (int i = 0; i < length; ++i) {
                String[] fileNames;
                Element attachment = (Element)attachments.item(i);
                String combinedNames = attachment.getTextContent();
                if (!StringUtils.isNotBlank((CharSequence)combinedNames) || (fileNames = combinedNames.split("\\r?\\n")) == null || fileNames.length <= 0) continue;
                attachmentNames.addAll(Arrays.asList(fileNames));
            }
        }
        return attachmentNames;
    }
}