1 /* 2 * Copyright (C) 2018 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License 15 */ 16 17 package com.android.dialer.commandline.impl; 18 19 import android.support.annotation.NonNull; 20 import android.support.annotation.VisibleForTesting; 21 import android.text.TextUtils; 22 import com.android.dialer.commandline.Arguments; 23 import com.android.dialer.commandline.Command; 24 import com.google.common.util.concurrent.Futures; 25 import com.google.common.util.concurrent.ListenableFuture; 26 import javax.inject.Inject; 27 28 /** Print arguments. */ 29 public class Echo implements Command { 30 31 @NonNull 32 @Override getShortDescription()33 public String getShortDescription() { 34 return "@hide Print all arguments."; 35 } 36 37 @NonNull 38 @Override getUsage()39 public String getUsage() { 40 return "echo [arguments...]"; 41 } 42 43 @VisibleForTesting 44 @Inject Echo()45 public Echo() {} 46 47 @Override run(Arguments args)48 public ListenableFuture<String> run(Arguments args) throws IllegalCommandLineArgumentException { 49 return Futures.immediateFuture(TextUtils.join(" ", args.getPositionals())); 50 } 51 } 52