JAL-3541 selectively merged build.gradle and gradle.properties

[jalview.git] / srcjar_unused / org / apache / log4j / xml / Log4jEntityResolver.java

diff --git a/srcjar_unused/org/apache/log4j/xml/Log4jEntityResolver.java b/srcjar_unused/org/apache/log4j/xml/Log4jEntityResolver.java
new file mode 100644 (file)
index 0000000..94125a6
--- /dev/null
+++ b/srcjar_unused/org/apache/log4j/xml/Log4jEntityResolver.java
@@ -0,0 +1,51 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You 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.
+ */
+
+package org.apache.log4j.xml;
+
+import org.apache.log4j.helpers.LogLog;
+import org.xml.sax.EntityResolver;
+import org.xml.sax.InputSource;
+
+import java.io.InputStream;
+import java.io.ByteArrayInputStream;
+
+/**
+ * An {@link EntityResolver} specifically designed to return
+ * <code>log4j.dtd</code> which is embedded within the log4j jar
+ * file. 
+ *
+ * @author Paul Austin
+ * */
+public class Log4jEntityResolver implements EntityResolver {
+  private static final String PUBLIC_ID = "-//APACHE//DTD LOG4J 1.2//EN";
+
+  public InputSource resolveEntity (String publicId, String systemId) {
+    if (systemId.endsWith("log4j.dtd")  || PUBLIC_ID.equals(publicId)) {
+      Class clazz = getClass();
+      InputStream in = clazz.getResourceAsStream("/org/apache/log4j/xml/log4j.dtd");
+      if (in == null) {
+           LogLog.warn("Could not find [log4j.dtd] using [" + clazz.getClassLoader()
+                    + "] class loader, parsed without DTD.");
+        in = new ByteArrayInputStream(new byte[0]);
+      }
+         return new InputSource(in);
+    } else {
+      return null;
+    }
+  }
+}