92 lines
2.8 KiB
Java
92 lines
2.8 KiB
Java
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/*
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* Copyright (C) 2018 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package com.android.dialer.commandline.impl;
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import android.content.Context;
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import android.support.annotation.NonNull;
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import com.android.dialer.commandline.Arguments;
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import com.android.dialer.commandline.Command;
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import com.android.dialer.commandline.CommandLineComponent;
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import com.android.dialer.inject.ApplicationContext;
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import com.google.common.collect.ImmutableMap;
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import com.google.common.util.concurrent.Futures;
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import com.google.common.util.concurrent.ListenableFuture;
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import java.util.Locale;
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import java.util.Map.Entry;
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import java.util.concurrent.ExecutionException;
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import javax.inject.Inject;
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/** List available commands */
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public class Help implements Command {
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@NonNull
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@Override
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public String getShortDescription() {
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return "Print this message";
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}
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@NonNull
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@Override
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public String getUsage() {
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return "help";
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}
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private final Context context;
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@Inject
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Help(@ApplicationContext Context context) {
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this.context = context;
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}
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@Override
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public ListenableFuture<String> run(Arguments args) throws IllegalCommandLineArgumentException {
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boolean showHidden = args.getFlags().containsKey("showHidden");
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StringBuilder stringBuilder = new StringBuilder();
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ImmutableMap<String, Command> commands =
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CommandLineComponent.get(context).commandSupplier().get();
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stringBuilder
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.append(runOrThrow(commands.get("version")))
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.append("\n")
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.append("\n")
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.append("usage: <command> [args...]\n")
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.append("\n")
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.append("<command>\n");
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for (Entry<String, Command> entry : commands.entrySet()) {
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String description = entry.getValue().getShortDescription();
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if (!showHidden && description.startsWith("@hide ")) {
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continue;
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}
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stringBuilder.append(String.format(Locale.US, " %20s %s\n", entry.getKey(), description));
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}
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return Futures.immediateFuture(stringBuilder.toString());
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}
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private static String runOrThrow(Command command) throws IllegalCommandLineArgumentException {
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try {
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return command.run(Arguments.EMPTY).get();
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} catch (InterruptedException e) {
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Thread.interrupted();
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throw new RuntimeException(e);
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} catch (ExecutionException e) {
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throw new RuntimeException(e);
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}
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}
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}
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