Revert "svc: Remove NfcCommand "

/*

 * Copyright (C) 2015 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.commands.svc;

import android.app.ActivityThread;

import android.content.Context;

import android.nfc.NfcAdapter;

import android.nfc.NfcManager;

import android.os.Looper;

public class NfcCommand extends Svc.Command {

    public NfcCommand() {

        super("nfc");

    }

    @Override

    public String shortHelp() {

        return "Control NFC functions";

    }

    @Override

    public String longHelp() {

        return shortHelp() + "\n"

                + "\n"

                + "usage: svc nfc [enable|disable]\n"

                + "         Turn NFC on or off.\n\n";

    }

    @Override

    public void run(String[] args) {

        Looper.prepareMainLooper();

        ActivityThread.initializeMainlineModules();

        Context context = ActivityThread.systemMain().getSystemContext();

        NfcManager nfcManager = context.getSystemService(NfcManager.class);

        if (nfcManager == null) {

            System.err.println("Got a null NfcManager, is the system running?");

            return;

        }

        NfcAdapter adapter = nfcManager.getDefaultAdapter();

        if (adapter == null) {

            System.err.println("Got a null NfcAdapter, is the system running?");

            return;

        }

        if (args.length == 2 && "enable".equals(args[1])) {

            adapter.enable();

            return;

        } else if (args.length == 2 && "disable".equals(args[1])) {

            adapter.disable(true);

            return;

        }

        System.err.println(longHelp());

    }

}

            new PowerCommand(),

            // `svc wifi` has been migrated to WifiShellCommand

            new UsbCommand(),

            // `svc nfc` has been migrated to NfcShellCommand

            new NfcCommand(),

            // `svc bluetooth` has been migrated to BluetoothShellCommand

            new SystemServerCommand(),

    };