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/*
* 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";
}
}
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