Added catalog manager

Author: rmraya

lib/xmljava.jar

@@ -2,7 +2,7 @@
 sonar.projectKey=XMLJava
 # this is the name displayed in the SonarQube UI
 sonar.projectName=XMLJava
-sonar.projectVersion=1.0.0
+sonar.projectVersion=2.0.0
 
 # Path is relative to the sonar-project.properties file. Replace "\" by "/" on Windows.
 # Since SonarQube 4.2, this property is optional if sonar.modules is set. 

sonar-project.properties

@@ -49,7 +49,7 @@ public class Catalog implements EntityResolver2 {
     private String base = "";
     private String documentParent = "";
 
-    public Catalog(String catalogFile)
+    protected Catalog(String catalogFile)
             throws SAXException, IOException, ParserConfigurationException, URISyntaxException {
         File file = new File(catalogFile);
         if (!file.isAbsolute()) {
@@ -301,7 +301,6 @@ public InputSource getExternalSubset(String name, String baseURI) throws SAXExce
         return null;
     }
 
-    @SuppressWarnings("resource")
     @Override
     public InputSource resolveEntity(String name, String publicId, String baseURI, String systemId)
             throws SAXException, IOException {

src/com/maxprograms/xml/Catalog.java

@@ -0,0 +1,38 @@
+/*******************************************************************************
+ * Copyright (c) 2022 - 2024 Maxprograms.
+ *
+ * This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License 1.0
+ * which accompanies this distribution, and is available at
+ * https://www.eclipse.org/org/documents/epl-v10.html
+ *
+ * Contributors:
+ *     Maxprograms - initial API and implementation
+ *******************************************************************************/
+
+package com.maxprograms.xml;
+
+import java.io.IOException;
+import java.net.URISyntaxException;
+import java.util.Hashtable;
+import java.util.Map;
+
+import javax.xml.parsers.ParserConfigurationException;
+
+import org.xml.sax.SAXException;
+
+public class CatalogBuilder {
+
+    private static Map<String,Catalog> map = new Hashtable<>();
+
+    private CatalogBuilder() {
+        // Do not instantiate
+    }
+
+    public static Catalog getCatalog(String file) throws SAXException, IOException, ParserConfigurationException, URISyntaxException{
+        if (!map.containsKey(file)) {
+            map.put(file, new Catalog(file));
+        }
+        return map.get(file);
+    }
+}

src/com/maxprograms/xml/CatalogBuilder.java

@@ -14,8 +14,8 @@
 
 public class Constants {
 
-    public static final String VERSION = "1.8.0";
-    public static final String BUILD = "20240322_0813";
+    public static final String VERSION = "2.0.0";
+    public static final String BUILD = "20241215_0607";
 
     private Constants() {
         // private for security