--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/com/go/trove/log/LogScribe.java	Sat Mar 21 11:00:06 2009 +0000
@@ -0,0 +1,223 @@
+/* ====================================================================
+ * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group
+ * ====================================================================
+ * The Tea Software License, Version 1.1
+ *
+ * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The end-user documentation included with the redistribution,
+ *    if any, must include the following acknowledgment:
+ *       "This product includes software developed by the
+ *        Walt Disney Internet Group (http://opensource.go.com/)."
+ *    Alternately, this acknowledgment may appear in the software itself,
+ *    if and wherever such third-party acknowledgments normally appear.
+ *
+ * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must
+ *    not be used to endorse or promote products derived from this
+ *    software without prior written permission. For written
+ *    permission, please contact opensource@dig.com.
+ *
+ * 5. Products derived from this software may not be called "Tea",
+ *    "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet",
+ *    "Kettle", "Trove" or "BeanDoc" appear in their name, without prior
+ *    written permission of the Walt Disney Internet Group.
+ *
+ * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED.  IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * For more information about Tea, please see http://opensource.go.com/.
+ */
+
+package com.go.trove.log;
+
+import java.io.*;
+import java.text.*;
+import java.util.TimeZone;
+import com.go.trove.util.FastDateFormat;
+
+/******************************************************************************
+ * LogScribe is a LogListener that writes log messages to a PrintWriter. Each
+ * message is printed to a line that is prepended with other LogEvent
+ * information. The default prepend format is as follows:
+ *
+ * <pre>
+ * [event type code],[date & time],[thread name],[log source name]>[one space]
+ * </pre>
+ *
+ * The event type codes are <tt>" D", " I", "*W" and "*E"</tt> for debug,
+ * info, warn and error, respectively. The default date format looks like
+ * this: <tt>"1999/06/08 18:08:34.067 PDT"</tt>. If there is no log source, or
+ * it has no name, it is omitted from the prepend. Here is a sample line that
+ * is written out:
+ *
+ * <pre>
+ *  I,1999/06/08 18:08:34.67 PDT,main> Started Transaction Manager
+ * </pre>
+ *
+ * @author Brian S O'Neill
+ * @version
+ * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 01/07/02 <!-- $-->
+ */
+public class LogScribe implements LogListener {
+    private PrintWriter mWriter;
+    private DateFormat mSlowFormat;
+    private FastDateFormat mFastFormat;
+
+    private boolean mShowThread = true;
+    private boolean mShowSourceName = true;
+
+    public LogScribe(PrintWriter writer) {
+        this(writer, (FastDateFormat)null);
+    }
+
+    public LogScribe(PrintWriter writer, DateFormat format) {
+        mWriter = writer;
+        mSlowFormat = format;
+        if (format == null) {
+            mFastFormat =
+                FastDateFormat.getInstance("yyyy/MM/dd HH:mm:ss.SSS z");
+        }
+        else if (format instanceof SimpleDateFormat) {
+            SimpleDateFormat simple = (SimpleDateFormat)format;
+            String pattern = simple.toPattern();
+            TimeZone timeZone = simple.getTimeZone();
+            DateFormatSymbols symbols = simple.getDateFormatSymbols();
+            mFastFormat =
+                FastDateFormat.getInstance(pattern, timeZone, null, symbols);
+        }
+    }
+
+    public LogScribe(PrintWriter writer, FastDateFormat format) {
+        mWriter = writer;
+        mSlowFormat = null;
+        if (format == null) {
+            format = FastDateFormat.getInstance("yyyy/MM/dd HH:mm:ss.SSS z");
+        }
+        mFastFormat = format;
+    }
+
+    public void logMessage(LogEvent e) {
+        String message = e.getMessage();
+        if (message != null) {
+            synchronized (mWriter) {
+                mWriter.print(createPrepend(e));
+                mWriter.println(message);
+                mWriter.flush();
+            }
+        }
+    }
+
+    public void logException(LogEvent e) {
+        Throwable t = e.getException();
+        
+        if (t == null) {
+            logMessage(e);
+        }
+        else {
+            synchronized (mWriter) {
+                mWriter.print(createPrepend(e));
+                t.printStackTrace(mWriter);
+                mWriter.flush();
+            }
+        }
+    }
+
+    /**
+     * The showing of the event thread name is on by default.
+     */
+    public boolean isShowThreadEnabled() {
+        return mShowThread;
+    }
+
+    public void setShowThreadEnabled(boolean enabled) {
+        mShowThread = enabled;
+    }
+
+    /**
+     * The showing of the event source name is on by default.
+     */
+    public boolean isShowSourceEnabled() {
+        return mShowSourceName;
+    }
+
+    public void setShowSourceEnabled(boolean enabled) {
+        mShowSourceName = enabled;
+    }
+
+    /**
+     * Creates the default line prepend for a message.
+     */
+    protected String createPrepend(LogEvent e) {
+        StringBuffer pre = new StringBuffer(80);
+                
+        String code = "??";
+        switch (e.getType()) {
+        case LogEvent.DEBUG_TYPE:
+            code = " D";
+            break;
+        case LogEvent.INFO_TYPE:
+            code = " I";
+            break;
+        case LogEvent.WARN_TYPE:
+            code = "*W";
+            break;
+        case LogEvent.ERROR_TYPE:
+            code = "*E";
+            break;
+        }
+
+        pre.append(code);
+        pre.append(',');
+        if (mFastFormat != null) {
+            pre.append(mFastFormat.format(e.getTimestamp()));
+        }
+        else {
+            synchronized (mSlowFormat) {
+                pre.append(mSlowFormat.format(e.getTimestamp()));
+            }
+        }
+
+        if (isShowThreadEnabled()) {
+            pre.append(',');
+            pre.append(e.getThreadName());
+        }
+
+        if (isShowSourceEnabled()) {
+            Log source = e.getLogSource();
+            if (source != null) {
+                String sourceName = source.getName();
+                if (sourceName != null) {
+                    pre.append(',');
+                    pre.append(sourceName);
+                }
+            }
+        }
+
+        pre.append('>');
+        pre.append(' ');
+
+        return pre.toString();
+    }
+}