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

[jalview.git] / srcjar_unused / org / apache / log4j / pattern / PropertiesPatternConverter.java

diff --git a/srcjar_unused/org/apache/log4j/pattern/PropertiesPatternConverter.java b/srcjar_unused/org/apache/log4j/pattern/PropertiesPatternConverter.java
new file mode 100644 (file)
index 0000000..a55cf97
--- /dev/null
+++ b/srcjar_unused/org/apache/log4j/pattern/PropertiesPatternConverter.java
@@ -0,0 +1,104 @@
+/*
+ * 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.pattern;
+
+import org.apache.log4j.spi.LoggingEvent;
+
+import java.util.Iterator;
+import java.util.Set;
+import org.apache.log4j.helpers.*;
+
+
+/**
+ * Able to handle the contents of the LoggingEvent's Property bundle and either
+ * output the entire contents of the properties in a similar format to the
+ * java.util.Hashtable.toString(), or to output the value of a specific key
+ * within the property bundle
+ * when this pattern converter has the option set.
+ *
+ * @author Paul Smith
+ * @author Ceki Gülcü
+ */
+public final class PropertiesPatternConverter
+  extends LoggingEventPatternConverter {
+  /**
+   * Name of property to output.
+   */
+  private final String option;
+
+  /**
+   * Private constructor.
+   * @param options options, may be null.
+   */
+  private PropertiesPatternConverter(
+    final String[] options) {
+    super(
+      ((options != null) && (options.length > 0))
+      ? ("Property{" + options[0] + "}") : "Properties", "property");
+
+    if ((options != null) && (options.length > 0)) {
+      option = options[0];
+    } else {
+      option = null;
+    }
+  }
+
+  /**
+   * Obtains an instance of PropertiesPatternConverter.
+   * @param options options, may be null or first element contains name of property to format.
+   * @return instance of PropertiesPatternConverter.
+   */
+  public static PropertiesPatternConverter newInstance(
+    final String[] options) {
+    return new PropertiesPatternConverter(options);
+  }
+
+  /**
+   * {@inheritDoc}
+   */
+  public void format(final LoggingEvent event, final StringBuffer toAppendTo) {
+    // if there is no additional options, we output every single
+    // Key/Value pair for the MDC in a similar format to Hashtable.toString()
+    if (option == null) {
+      toAppendTo.append("{");
+
+      try {
+        Set keySet = MDCKeySetExtractor.INSTANCE.getPropertyKeySet(event);
+          if (keySet != null) {
+            for (Iterator i = keySet.iterator(); i.hasNext();) {
+                Object item = i.next();
+                Object val = event.getMDC(item.toString());
+                toAppendTo.append("{").append(item).append(",").append(val).append(
+                "}");
+            }
+          }
+      } catch(Exception ex) {
+              LogLog.error("Unexpected exception while extracting MDC keys", ex);
+      }
+
+      toAppendTo.append("}");
+    } else {
+      // otherwise they just want a single key output
+      Object val = event.getMDC(option);
+
+      if (val != null) {
+        toAppendTo.append(val);
+      }
+    }
+  }
+}