Patch from Charlie to add magic formatting to the AuditLogger.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@2439 6335cc39-0255-0410-8fd6-9bcaacd3b74c

src/java/com/samskivert/util/AuditLogger.java

@@ -64,12 +64,14 @@ public class AuditLogger
     }
 
     /**
-     * Writes the supplied message to the log, prefixed by a date and timestamp. A newline will be
-     * appended to the message.
+     * Builds a log entry out of the given message and args using
+     * {@link Logger#format(Object, Object...)}, prefixes it with the current date and time,
+     * appends a newline to it and writes it to the log.
      */
-    public synchronized void log (String message)
+    public synchronized void log (String message, Object...args)
     {
         // construct the message
+        message = Logger.format(message, args);
         StringBuffer buf = new StringBuffer(message.length() + TIMESTAMP_LENGTH);
         _format.format(new Date(), buf, _fpos);
         buf.append(message);

src/java/com/samskivert/util/Logger.java

@@ -39,6 +39,33 @@ package com.samskivert.util;
  */
 public abstract class Logger
 {
+    /**
+     * Formats the given message and array of alternating key value pairs like so:
+     *
+     * <pre>message [key=value, key=value, key=value]</pre>
+     */
+    public static String format (Object message, Object... args)
+    {
+        StringBuilder buf = new StringBuilder();
+        buf.append(message);
+        if (args != null && args.length > 1) {
+            buf.append(" [");
+            for (int ii = 0, nn = args.length/2; ii < nn; ii++) {
+                if (ii > 0) {
+                    buf.append(", ");
+                }
+                buf.append(args[2*ii]).append("=");
+                try {
+                    StringUtil.toString(buf, args[2*ii+1]);
+                } catch (Throwable t) {
+                    buf.append("<toString() failure: " + t + ">");
+                }
+            }
+            buf.append("]");
+        }
+        return buf.toString();
+    }
+
     /**
      * Used to create logger instances. This is only public so that the log factory can be
      * configured programmatically via {@link Logger#setFactory}.
@@ -110,31 +137,6 @@ public abstract class Logger
      */
     public abstract void error (Object message, Object... args);
 
-    /**
-     * Format messages and arguments. For use by logger implementations.
-     */
-    protected String format (Object message, Object[] args)
-    {
-        StringBuilder buf = new StringBuilder();
-        buf.append(message);
-        if (args != null && args.length > 1) {
-            buf.append(" [");
-            for (int ii = 0, nn = args.length/2; ii < nn; ii++) {
-                if (ii > 0) {
-                    buf.append(", ");
-                }
-                buf.append(args[2*ii]).append("=");
-                try {
-                    StringUtil.toString(buf, args[2*ii+1]);
-                } catch (Throwable t) {
-                    buf.append("<toString() failure: " + t + ">");
-                }
-            }
-            buf.append("]");
-        }
-        return buf.toString();
-    }
-
     /**
      * Extracts the exception from the message and arguments (if there is one). For use by logger
      * implementations.