Create Logger.java

Author: alvinqid

src/main/java/org.levimc.launcher.util/Logger.java

@@ -0,0 +1,75 @@
+package org.levimc.launcher.util;
+
+public class Logger implements AutoCloseable {
+    private long nativeLoggerPtr;
+
+    private static class Holder {
+        private static final Logger INSTANCE = new Logger("LeviMC/@alvinqid");
+    }
+
+    public static Logger get() {
+        return Holder.INSTANCE;
+    }
+
+    private Logger(String loggerName) {
+        nativeLoggerPtr = nativeCreateLogger(loggerName);
+    }
+
+    public static void release() {
+        Holder.INSTANCE.close();
+    }
+
+    @Override
+    protected void finalize() throws Throwable {
+        close();
+        super.finalize();
+    }
+
+    private native long nativeCreateLogger(String name);
+
+    private native void nativeDestroyLogger(long nativeLoggerPtr);
+
+    private native void nativeInfo(long nativeLoggerPtr, String msg);
+
+    private native void nativeError(long nativeLoggerPtr, String msg);
+
+    private native void nativeWarn(long nativeLoggerPtr, String msg);
+
+    private native void nativeDebug(long nativeLoggerPtr, String msg);
+
+    public void info(String msg, Object... args) {
+        if (nativeLoggerPtr != 0)
+            nativeInfo(nativeLoggerPtr, format(msg, args));
+    }
+
+    public void error(String msg, Object... args) {
+        if (nativeLoggerPtr != 0)
+            nativeError(nativeLoggerPtr, format(msg, args));
+    }
+
+    public void warn(String msg, Object... args) {
+        if (nativeLoggerPtr != 0)
+            nativeWarn(nativeLoggerPtr, format(msg, args));
+    }
+
+    public void debug(String msg, Object... args) {
+        if (nativeLoggerPtr != 0)
+            nativeDebug(nativeLoggerPtr, format(msg, args));
+    }
+
+    @Override
+    public void close() {
+        if (nativeLoggerPtr != 0) {
+            nativeDestroyLogger(nativeLoggerPtr);
+            nativeLoggerPtr = 0;
+        }
+    }
+
+    private String format(String msg, Object... args) {
+        try {
+            return args == null || args.length == 0 ? msg : String.format(msg, args);
+        } catch (Exception e) {
+            return msg;
+        }
+    }
+              }