mirror of https://github.com/M66B/FairEmail.git
M66B
8 months ago
parent
3989504073
commit
46ff530412
@ -0,0 +1,217 @@
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package com.bugsnag.android.repackaged.dslplatform.json;
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import androidx.annotation.Nullable;
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import org.w3c.dom.*;
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import org.w3c.dom.ls.DOMImplementationLS;
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import org.w3c.dom.ls.LSOutput;
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import org.w3c.dom.ls.LSSerializer;
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import org.xml.sax.InputSource;
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import org.xml.sax.SAXException;
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import javax.xml.parsers.DocumentBuilder;
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import javax.xml.parsers.DocumentBuilderFactory;
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import javax.xml.parsers.ParserConfigurationException;
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import java.io.IOException;
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import java.io.StringReader;
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import java.io.StringWriter;
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import java.util.*;
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@SuppressWarnings({"rawtypes", "unchecked"}) // suppress pre-existing warnings
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public abstract class XmlConverter {
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static final JsonReader.ReadObject<Element> Reader = new JsonReader.ReadObject<Element>() {
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@Nullable
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@Override
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public Element read(JsonReader reader) throws IOException {
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return reader.wasNull() ? null : deserialize(reader);
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}
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};
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static final JsonWriter.WriteObject<Element> Writer = new JsonWriter.WriteObject<Element>() {
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@Override
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public void write(JsonWriter writer, @Nullable Element value) {
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serializeNullable(value, writer);
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}
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};
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private static final DocumentBuilder documentBuilder;
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static {
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DocumentBuilderFactory dbFactory = DocumentBuilderFactory.newInstance();
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try {
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documentBuilder = dbFactory.newDocumentBuilder();
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} catch (ParserConfigurationException e) {
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throw new RuntimeException(e);
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}
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}
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public static void serializeNullable(@Nullable final Element value, final JsonWriter sw) {
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if (value == null)
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sw.writeNull();
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else
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serialize(value, sw);
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}
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public static void serialize(final Element value, final JsonWriter sw) {
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Document document = value.getOwnerDocument();
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DOMImplementationLS domImplLS = (DOMImplementationLS) document.getImplementation();
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LSSerializer serializer = domImplLS.createLSSerializer();
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LSOutput lsOutput = domImplLS.createLSOutput();
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lsOutput.setEncoding("UTF-8");
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StringWriter writer = new StringWriter();
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lsOutput.setCharacterStream(writer);
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serializer.write(document, lsOutput);
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StringConverter.serialize(writer.toString(), sw);
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}
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public static Element deserialize(final JsonReader reader) throws IOException {
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if (reader.last() == '"') {
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try {
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InputSource source = new InputSource(new StringReader(reader.readString()));
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return documentBuilder.parse(source).getDocumentElement();
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} catch (SAXException ex) {
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throw reader.newParseErrorAt("Invalid XML value", 0, ex);
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}
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} else {
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final Map<String, Object> map = ObjectConverter.deserializeMap(reader);
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return mapToXml(map);
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}
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}
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public static Element mapToXml(final Map<String, Object> map) throws IOException {
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final Set<String> xmlRootElementNames = map.keySet();
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if (xmlRootElementNames.size() > 1) {
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throw ParsingException.create("Invalid XML. Expecting root element", true);
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}
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final String rootName = xmlRootElementNames.iterator().next();
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final Document document = createDocument();
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final Element rootElement = document.createElement(rootName);
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document.appendChild(rootElement);
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buildXmlFromHashMap(document, rootElement, map.get(rootName));
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return rootElement;
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}
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private static synchronized Document createDocument() {
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try {
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final DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
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final DocumentBuilder builder = factory.newDocumentBuilder();
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return builder.newDocument();
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} catch (ParserConfigurationException e) {
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throw new ConfigurationException(e);
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}
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}
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private static final String TEXT_NODE_TAG = "#text";
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private static final String COMMENT_NODE_TAG = "#comment";
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private static final String CDATA_NODE_TAG = "#cdata-section";
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@SuppressWarnings("unchecked")
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private static void buildXmlFromHashMap(
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final Document doc,
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final Element subtreeRootElement,
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@Nullable final Object elementContent) {
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if (elementContent instanceof HashMap) {
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final HashMap<String, Object> elementContentMap = (HashMap<String, Object>) elementContent;
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for (final Map.Entry<String, Object> childEntry : elementContentMap.entrySet()) {
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final String key = childEntry.getKey();
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if (key.startsWith("@")) {
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subtreeRootElement.setAttribute(key.substring(1), childEntry.getValue().toString());
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} else if (key.startsWith("#")) {
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if (key.equals(TEXT_NODE_TAG)) {
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if (childEntry.getValue() instanceof List) {
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buildTextNodeList(doc, subtreeRootElement, (List<String>) childEntry.getValue());
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} else {
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final Node textNode = doc.createTextNode(childEntry.getValue().toString());
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subtreeRootElement.appendChild(textNode);
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}
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} else if (key.equals(CDATA_NODE_TAG)) {
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if (childEntry.getValue() instanceof List) {
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buildCDataList(doc, subtreeRootElement, (List<String>) childEntry.getValue());
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} else {
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final Node cDataNode = doc.createCDATASection(childEntry.getValue().toString());
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subtreeRootElement.appendChild(cDataNode);
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}
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} else if (key.equals(COMMENT_NODE_TAG)) {
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if (childEntry.getValue() instanceof List) {
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buildCommentList(doc, subtreeRootElement, (List<String>) childEntry.getValue());
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} else {
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final Node commentNode = doc.createComment(childEntry.getValue().toString());
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subtreeRootElement.appendChild(commentNode);
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}
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} //else if (key.equals(WHITESPACE_NODE_TAG)
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// || key.equals(SIGNIFICANT_WHITESPACE_NODE_TAG)) {
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// Ignore
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//} else {
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/*
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* All other nodes whose name starts with a '#' are invalid XML
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* nodes, and thus ignored:
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*/
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//}
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} else {
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final Element newElement = doc.createElement(key);
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subtreeRootElement.appendChild(newElement);
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buildXmlFromHashMap(doc, newElement, childEntry.getValue());
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}
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}
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} else if (elementContent instanceof List) {
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buildXmlFromJsonArray(doc, subtreeRootElement, (List<Object>) elementContent);
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} else {
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if (elementContent != null) {
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subtreeRootElement.setTextContent(elementContent.toString());
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}
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}
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}
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private static void buildTextNodeList(final Document doc, final Node subtreeRoot, final List<String> nodeValues) {
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final StringBuilder sb = new StringBuilder();
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for (final String nodeValue : nodeValues) {
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sb.append(nodeValue);
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}
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subtreeRoot.appendChild(doc.createTextNode(sb.toString()));
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}
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private static void buildCDataList(final Document doc, final Node subtreeRoot, final List<String> nodeValues) {
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for (final String nodeValue : nodeValues) {
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subtreeRoot.appendChild(doc.createCDATASection(nodeValue));
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}
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}
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private static void buildCommentList(final Document doc, final Node subtreeRoot, final List<String> nodeValues) {
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for (final String nodeValue : nodeValues) {
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subtreeRoot.appendChild(doc.createComment(nodeValue));
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}
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}
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private static void buildXmlFromJsonArray(
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final Document doc,
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final Node listHeadNode,
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final List<Object> elementContentList) {
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final Node subtreeRootNode = listHeadNode.getParentNode();
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/* The head node (already exists) */
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buildXmlFromHashMap(doc, (Element) listHeadNode, elementContentList.get(0));
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/* The rest of the list */
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for (final Object elementContent : elementContentList.subList(1, elementContentList.size())) {
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final Element newElement = doc.createElement(listHeadNode.getNodeName());
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subtreeRootNode.appendChild(newElement);
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buildXmlFromHashMap(doc, newElement, elementContent);
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}
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}
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@SuppressWarnings("unchecked")
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public static ArrayList<Element> deserializeCollection(final JsonReader reader) throws IOException {
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return reader.deserializeCollectionCustom(Reader);
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}
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public static void deserializeCollection(final JsonReader reader, final Collection<Element> res) throws IOException {
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reader.deserializeCollection(Reader, res);
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}
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@SuppressWarnings("unchecked")
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public static ArrayList<Element> deserializeNullableCollection(final JsonReader reader) throws IOException {
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return reader.deserializeNullableCollectionCustom(Reader);
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}
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public static void deserializeNullableCollection(final JsonReader reader, final Collection<Element> res) throws IOException {
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reader.deserializeNullableCollection(Reader, res);
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}
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}
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