1 files changed, 69 insertions, 0 deletions
diff --git a/luni/src/main/java/libcore/io/EventLogger.java b/luni/src/main/java/libcore/io/EventLogger.java
new file mode 100644
index 0000000..9709cc9
--- /dev/null
+++ b/luni/src/main/java/libcore/io/EventLogger.java
@@ -0,0 +1,69 @@
+/*
+ * Copyright (C) 2012 The Android Open Source Project
+ *
+ * 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 libcore.io;
+
+public final class EventLogger {
+
+    /**
+     * Hook for customizing how events are reported.
+     */
+    private static volatile Reporter REPORTER = new DefaultReporter();
+
+    /**
+     * Used to replace default Reporter for logging events. Must be non-null.
+     */
+    public static void setReporter(Reporter reporter) {
+        if (reporter == null) {
+            throw new NullPointerException("reporter == null");
+        }
+        REPORTER = reporter;
+    }
+
+    /**
+     * Returns non-null Reporter.
+     */
+    public static Reporter getReporter() {
+        return REPORTER;
+    }
+
+    /**
+     * Interface to allow customization of reporting behavior.
+     */
+    public static interface Reporter {
+        public void report (int code, Object... list);
+    }
+
+    /**
+     * Default Reporter which reports events to the log.
+     */
+    private static final class DefaultReporter implements Reporter {
+        @Override
+        public void report (int code, Object... list) {
+            StringBuilder sb = new StringBuilder();
+            sb.append(code);
+            for (Object o : list) {
+                sb.append(",");
+                sb.append(o.toString());
+            }
+            System.out.println(sb);
+        }
+    }
+
+    public static void writeEvent(int code, Object... list) {
+        getReporter().report(code, list);
+    }
+}