Created a default log provider so that logging does something by default.

git-svn-id: https://samskivert.googlecode.com/svn/trunk@21 6335cc39-0255-0410-8fd6-9bcaacd3b74c

projects/samskivert/src/java/com/samskivert/util/DefaultLogProvider.java

@@ -0,0 +1,40 @@
+//
+// $Id: DefaultLogProvider.java,v 1.1 2000/12/06 03:21:59 mdb Exp $
+
+package com.samskivert.util;
+
+import java.util.Hashtable;
+
+/**
+ * If no log provider is registered with the log services, the default
+ * provider will be used. The default provider simple logs messages to
+ * <code>System.err</code> and manages log levels in a simplistic way.
+ */
+public class DefaultLogProvider implements LogProvider
+{
+    public void log (int level, String moduleName, String message)
+    {
+	Integer tlevel = (Integer)_levels.get(moduleName);
+	if ((tlevel != null && level >= tlevel.intValue()) ||
+	    (level >= _level)) {
+	    System.err.println(moduleName + ": " + message);
+	}
+    }
+
+    public void setLevel (String moduleName, int level)
+    {
+	_levels.put(moduleName, new Integer(level));
+    }
+
+    public void setLevel (int level)
+    {
+	_level = level;
+	_levels.clear();
+    }
+
+    /** The default log level. */
+    protected int _level = Log.INFO;
+
+    /** The levels of each module. */
+    protected Hashtable _levels = new Hashtable();
+}

projects/samskivert/src/java/com/samskivert/util/Log.java

@@ -1,5 +1,5 @@
 //
-// $Id: Log.java,v 1.1 2000/12/06 00:24:46 mdb Exp $
+// $Id: Log.java,v 1.2 2000/12/06 03:21:59 mdb Exp $
 
 package com.samskivert.util;
 
@@ -83,12 +83,18 @@ public final class Log
 	_provider.setLevel(level);
     }
 
+    /**
+     * Instructs the logging services to use the specified log provider to
+     * perform the actual logging.
+     */
     public static void setLogProvider (LogProvider provider)
     {
 	_provider = provider;
     }
 
+    /** The name of the module to which this log instance is associated. */
     protected String _moduleName;
 
-    protected static LogProvider _provider;
+    /** The log provider currently in use by the log services. */
+    protected static LogProvider _provider = new DefaultLogProvider();
 }

projects/samskivert/src/java/com/samskivert/util/Makefile

@@ -1,9 +1,10 @@
 #
-# $Id: Makefile,v 1.3 2000/12/06 00:24:46 mdb Exp $
+# $Id: Makefile,v 1.4 2000/12/06 03:21:59 mdb Exp $
 
 ROOT = ../../..
 
 SRCS = \
+	DefaultLogProvider.java \
 	Log.java \
 	LogProvider.java \
 	PropertiesUtil.java \