| /* |
| * Copyright (C) 2018 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 com.android.dialer.commandline.impl; |
| |
| import android.content.Context; |
| import android.support.annotation.NonNull; |
| import com.android.dialer.commandline.Command; |
| import com.android.dialer.commandline.CommandLineComponent; |
| import com.android.dialer.inject.ApplicationContext; |
| import com.google.common.collect.ImmutableList; |
| import com.google.common.collect.ImmutableMap; |
| import com.google.common.util.concurrent.Futures; |
| import com.google.common.util.concurrent.ListenableFuture; |
| import java.util.Map.Entry; |
| import java.util.concurrent.ExecutionException; |
| import javax.inject.Inject; |
| |
| /** List available commands */ |
| public class Help implements Command { |
| |
| private final Context context; |
| |
| @Inject |
| Help(@ApplicationContext Context context) { |
| this.context = context; |
| } |
| |
| @Override |
| public ListenableFuture<String> run(ImmutableList<String> args) { |
| boolean showHidden = args.contains("--showHidden"); |
| |
| StringBuilder stringBuilder = new StringBuilder(); |
| ImmutableMap<String, Command> commands = |
| CommandLineComponent.get(context).commandSupplier().get(); |
| stringBuilder |
| .append(runOrThrow(commands.get("version"))) |
| .append("\n") |
| .append("\n") |
| .append("usage: <command> [args...]\n") |
| .append("\n") |
| .append("<command>\n"); |
| |
| for (Entry<String, Command> entry : commands.entrySet()) { |
| String description = entry.getValue().getShortDescription(); |
| if (!showHidden && description.startsWith("@hide ")) { |
| continue; |
| } |
| stringBuilder |
| .append("\t") |
| .append(entry.getKey()) |
| .append("\t") |
| .append(description) |
| .append("\n"); |
| } |
| |
| return Futures.immediateFuture(stringBuilder.toString()); |
| } |
| |
| private static String runOrThrow(Command command) { |
| try { |
| return command.run(ImmutableList.of()).get(); |
| } catch (InterruptedException e) { |
| Thread.interrupted(); |
| throw new RuntimeException(e); |
| } catch (ExecutionException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| @NonNull |
| @Override |
| public String getShortDescription() { |
| return "Print this message"; |
| } |
| } |