add LogWriter interface to enable switch log format

[xerial/xerial-core.git] / src / main / java / org / xerial / util / log / SilkLogWriter.java

diff --git a/src/main/java/org/xerial/util/log/SilkLogWriter.java b/src/main/java/org/xerial/util/log/SilkLogWriter.java
new file mode 100644 (file)
index 0000000..fadc24f
--- /dev/null
+++ b/src/main/java/org/xerial/util/log/SilkLogWriter.java
@@ -0,0 +1,72 @@
+/*--------------------------------------------------------------------------\r
+ *  Copyright 2009 Taro L. Saito\r
+ *\r
+ *  Licensed under the Apache License, Version 2.0 (the "License");\r
+ *  you may not use this file except in compliance with the License.\r
+ *  You may obtain a copy of the License at\r
+ *\r
+ *     http://www.apache.org/licenses/LICENSE-2.0\r
+ *\r
+ *  Unless required by applicable law or agreed to in writing, software\r
+ *  distributed under the License is distributed on an "AS IS" BASIS,\r
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
+ *  See the License for the specific language governing permissions and\r
+ *  limitations under the License.\r
+ *--------------------------------------------------------------------------*/\r
+//--------------------------------------\r
+// XerialJ\r
+//\r
+// SilkLogWriter.java\r
+// Since: Oct 13, 2009 3:35:01 PM\r
+//\r
+// $URL$\r
+// $Author$\r
+//--------------------------------------\r
+package org.xerial.util.log;\r
+\r
+import java.io.IOException;\r
+import java.io.OutputStreamWriter;\r
+import java.io.Writer;\r
+\r
+import org.xerial.silk.SilkWriter;\r
+import org.xerial.util.StringUtil;\r
+\r
+/**\r
+ * Generating log in Silk format\r
+ * \r
+ * @author leo\r
+ * \r
+ */\r
+public class SilkLogWriter implements LogWriter {\r
+\r
+    private Writer logOut = new OutputStreamWriter(System.err);\r
+\r
+    public SilkLogWriter() {\r
+\r
+    }\r
+\r
+    public SilkLogWriter(Writer out) {\r
+        this.logOut = out;\r
+    }\r
+\r
+    public void log(Logger logger, LogLevel logLevel, Object message) throws IOException {\r
+\r
+        if (logOut == null)\r
+            return; // no output is specified\r
+\r
+        synchronized (this) {\r
+            logOut.write(String.format("-%s(name:%s)", logLevel, logger.getLoggerShortName()));\r
+\r
+            if (message != null) {\r
+                logOut.write(StringUtil.NEW_LINE);\r
+                String m = SilkWriter.escapeText(message.toString());\r
+                logOut.write(m);\r
+            }\r
+\r
+            logOut.write(StringUtil.newline());\r
+            logOut.flush();\r
+        }\r
+\r
+    }\r
+\r
+}\r