Sketch out a 'bmgr' command line tool

# Copyright 2007 The Android Open Source Project

#

LOCAL_PATH:= $(call my-dir)

include $(CLEAR_VARS)

LOCAL_SRC_FILES := $(call all-subdir-java-files)

LOCAL_MODULE := bmgr

include $(BUILD_JAVA_LIBRARY)

include $(CLEAR_VARS)

ALL_PREBUILT += $(TARGET_OUT)/bin/bmgr

$(TARGET_OUT)/bin/bmgr : $(LOCAL_PATH)/bmgr | $(ACP)

	$(transform-prebuilt-to-target)

   Copyright (c) 2009, The Android Open Source Project

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   you may not use this file except in compliance with the License.

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   distributed under the License is distributed on an "AS IS" BASIS,

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# Script to start "bmgr" on the device, which has a very rudimentary

# shell.

#

base=/system

export CLASSPATH=$base/framework/bmgr.jar

exec app_process $base/bin com.android.commands.bmgr.Bmgr "$@"

/*

 * Copyright (C) 2009 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.bmgr;

import android.backup.IBackupManager;

import android.backup.IRestoreSession;

import android.backup.RestoreSet;

import android.os.RemoteException;

import android.os.ServiceManager;

public final class Bmgr {

    IBackupManager mBmgr;

    IRestoreSession mRestore;

    static final String BMGR_NOT_RUNNING_ERR =

            "Error: Could not access the Backup Manager.  Is the system running?";

    static final String TRANSPORT_NOT_RUNNING_ERR =

        "Error: Could not access the backup transport.  Is the system running?";

    private String[] mArgs;

    private int mNextArg;

    private String mCurArgData;

    public static void main(String[] args) {

        new Bmgr().run(args);

    }

    public void run(String[] args) {

        boolean validCommand = false;

        if (args.length < 1) {

            showUsage();

            return;

        }

        mBmgr = IBackupManager.Stub.asInterface(ServiceManager.getService("backup"));

        if (mBmgr == null) {

            System.err.println(BMGR_NOT_RUNNING_ERR);

            return;

        }

        mArgs = args;

        String op = args[0];

        mNextArg = 1;

        if ("run".equals(op)) {

            doRun();

            return;

        }

        if ("backup".equals(op)) {

            doBackup();

            return;

        }

        if ("list".equals(op)) {

            doList();

            return;

        }

    }

    private void doRun() {

        try {

            mBmgr.backupNow();

        } catch (RemoteException e) {

            System.err.println(e.toString());

            System.err.println(BMGR_NOT_RUNNING_ERR);

        }

    }

    private void doBackup() {

        boolean isFull = false;

        String pkg = nextArg();

        if ("-f".equals(pkg)) {

            isFull = true;

            pkg = nextArg();

        }

        if (pkg == null || pkg.startsWith("-")) {

            showUsage();

            return;

        }

        try {

            // !!! TODO: handle full backup

            mBmgr.dataChanged(pkg);

        } catch (RemoteException e) {

            System.err.println(e.toString());

            System.err.println(BMGR_NOT_RUNNING_ERR);

        }

    }

    private void doList() {

        String arg = nextArg();     // sets, transports, packages set#

        if ("transports".equals(arg)) {

            doListTransports();

            return;

        }

        // The rest of the 'list' options work with a restore session on the current transport

        try {

            int curTransport = mBmgr.getCurrentTransport();

            mRestore = mBmgr.beginRestoreSession(curTransport);

            if ("sets".equals(arg)) {

                doListRestoreSets();

            }

            mRestore.endRestoreSession();

        } catch (RemoteException e) {

            System.err.println(e.toString());

            System.err.println(BMGR_NOT_RUNNING_ERR);

        }

    }

    private void doListTransports() {

    }

    private void doListRestoreSets() {

        try {

            RestoreSet[] sets = mRestore.getAvailableRestoreSets();

            if (sets.length == 0) {

                System.out.println("No restore sets available");

            } else {

                for (RestoreSet s : sets) {

                    System.out.println("  " + s.token + " : " + s.name);

                }

            }

        } catch (RemoteException e) {

            System.err.println(e.toString());

            System.err.println(TRANSPORT_NOT_RUNNING_ERR);

        }

    }

    private String nextArg() {

        if (mNextArg >= mArgs.length) {

            return null;

        }

        String arg = mArgs[mNextArg];

        mNextArg++;

        return arg;

    }

    private static void showUsage() {

        System.err.println("usage: bmgr [backup|restore|list|transport|run]");

        System.err.println("       bmgr backup [-f] package");

        System.err.println("       bmgr list sets");

        System.err.println("       #bmgr list transports");

        System.err.println("       #bmgr transport which#");

        System.err.println("       #bmgr restore set#");

        System.err.println("       bmgr run");

    }

}

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