make jetty use I2P logging

apps/jetty/java/src/net/i2p/jetty/I2PLogger.java

@@ -0,0 +1,168 @@
+// ========================================================================
+// Copyright 2004-2005 Mort Bay Consulting Pty. Ltd.
+// ------------------------------------------------------------------------
+// Licensed 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 net.i2p.jetty;
+
+import net.i2p.I2PAppContext;
+import net.i2p.util.Log;
+
+import org.mortbay.jetty.Server;
+import org.mortbay.log.Logger;
+
+/**
+ * Modified from Jetty 6.1.26 StdErrLog.java and Slf4jLog.java
+ *
+ * Usage: org.mortbay.log.Log.setLog(new I2PLogger(ctx));
+ *
+ * @since Jetty 6
+ */
+public class I2PLogger implements Logger
+{    
+    private final Log _log;
+    
+    StringBuilder _buffer = new StringBuilder();
+    
+    public I2PLogger(I2PAppContext ctx)
+    {
+        _log = ctx.logManager().getLog(Server.class);
+        if (System.getProperty("DEBUG") != null)
+            setDebugEnabled(true);
+    }
+    
+    public boolean isDebugEnabled()
+    {
+        return _log.shouldLog(Log.DEBUG);
+    }
+    
+    public void setDebugEnabled(boolean enabled)
+    {
+        if (enabled)
+            _log.setMinimumPriority(Log.DEBUG);
+        else
+            // LogManager.getDefaultLimit() returns a String, not worth it
+            _log.setMinimumPriority(Log.ERROR);
+    }
+    
+    public void info(String msg,Object arg0, Object arg1)
+    {
+        if (arg0 == null && arg1 == null) {
+            _log.info(msg);
+        } else if (_log.shouldLog(Log.INFO)) {
+            synchronized(_buffer) {
+                format(msg,arg0,arg1);
+                _log.info(_buffer.toString());
+            }
+        }
+    }
+    
+    public void debug(String msg,Throwable th)
+    {
+        _log.debug(msg,th);
+    }
+    
+    public void debug(String msg,Object arg0, Object arg1)
+    {
+        if (arg0 == null && arg1 == null) {
+            _log.debug(msg);
+        } else if (_log.shouldLog(Log.DEBUG)) {
+            synchronized(_buffer) {
+                format(msg,arg0,arg1);
+                _log.debug(_buffer.toString());
+            }
+        }
+    }
+    
+    public void warn(String msg,Object arg0, Object arg1)
+    {
+        if (arg0 == null && arg1 == null) {
+            _log.warn(msg);
+        } else if (_log.shouldLog(Log.WARN)) {
+            synchronized(_buffer) {
+                format(msg,arg0,arg1);
+                _log.warn(_buffer.toString());
+            }
+        }
+    }
+    
+    public void warn(String msg, Throwable th)
+    {
+        if (th instanceof RuntimeException || th instanceof Error)
+            _log.error(msg, th);
+        else
+            _log.warn(msg,th);
+    }
+    
+    private void format(String msg, Object arg0, Object arg1)
+    {
+        int i0=msg==null?-1:msg.indexOf("{}");
+        int i1=i0<0?-1:msg.indexOf("{}",i0+2);
+        
+        if (i0>=0)
+        {
+            format(msg.substring(0,i0));
+            format(String.valueOf(arg0==null?"null":arg0));
+            
+            if (i1>=0)
+            {
+                format(msg.substring(i0+2,i1));
+                format(String.valueOf(arg1==null?"null":arg1));
+                format(msg.substring(i1+2));
+            }
+            else
+            {
+                format(msg.substring(i0+2));
+                if (arg1!=null)
+                {
+                    _buffer.append(' ');
+                    format(String.valueOf(arg1));
+                }
+            }
+        }
+        else
+        {
+            format(msg);
+            if (arg0!=null)
+            {
+                _buffer.append(' ');
+                format(String.valueOf(arg0));
+            }
+            if (arg1!=null)
+            {
+                _buffer.append(' ');
+                format(String.valueOf(arg1));
+            }
+        }
+    }
+    
+    private void format(String msg)
+    {
+        if (msg == null)
+            _buffer.append("null");
+        else
+            _buffer.append(msg);
+    }
+
+    public Logger getLogger(String name)
+    {
+            return this;
+    }
+    
+    @Override
+    public String toString()
+    {
+        return "I2PLogger";
+    }
+    
+
+}