refactor source tree organization, switch to meson

src/api-impl/android/util/PrefixPrinter.java

@@ -0,0 +1,50 @@
+/*
+ * Copyright (C) 2010 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 android.util;
+
+/**
+ * PrefixPrinter is a Printer which prefixes all lines with a given
+ * prefix.
+ *
+ * @hide
+ */
+public class PrefixPrinter implements Printer {
+    private final Printer mPrinter;
+    private final String mPrefix;
+
+    /**
+     * Creates a new PrefixPrinter.
+     *
+     * <p>If prefix is null or empty, the provided printer is returned, rather
+     * than making a prefixing printer.
+     */
+    public static Printer create(Printer printer, String prefix) {
+        if (prefix == null || prefix.equals("")) {
+            return printer;
+        }
+        return new PrefixPrinter(printer, prefix);
+    }
+
+    private PrefixPrinter(Printer printer, String prefix) {
+        mPrinter = printer;
+        mPrefix = prefix;
+    }
+
+    public void println(String str) {
+        mPrinter.println(mPrefix + str);
+    }
+}