Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 93e7e22e authored by Christopher Tate's avatar Christopher Tate
Browse files

Add backup side of new FullBackupAgent class 

This class backs up an app's entire data directory tree.  Intended for use
by the backup-through-adb full mirroring facility, etc.  @hide because
it's not really something end apps will need to use.
parent ff0d9147

core/java/android/app/FullBackupAgent.java

0 → 100644
+58 −0
Original line number Diff line number Diff line 
package android.app;



import android.backup.BackupDataOutput;

import android.backup.FileBackupHelper;

import android.os.ParcelFileDescriptor;

import android.util.Log;



import java.io.File;

import java.util.ArrayList;

import java.util.LinkedList;



/**

 * Backs up an application's entire /data/data/<package>/... file system.  This

 * class is used by the desktop full backup mechanism and is not intended for direct

 * use by applications.

 * 

 * {@hide}

 */



public class FullBackupAgent extends BackupAgent {

    // !!! TODO: turn off debugging

    private static final String TAG = "FullBackupAgent";

    private static final boolean DEBUG = true;



    @Override

    public void onBackup(ParcelFileDescriptor oldState, BackupDataOutput data,

            ParcelFileDescriptor newState) {

        LinkedList<File> dirsToScan = new LinkedList<File>();

        ArrayList<String> allFiles = new ArrayList<String>();



        // build the list of files in the app's /data/data tree

        dirsToScan.add(getFilesDir());

        if (DEBUG) Log.v(TAG, "Backing up dir tree @ " + getFilesDir().getAbsolutePath() + " :");

        while (dirsToScan.size() > 0) {

            File dir = dirsToScan.removeFirst();

            File[] contents = dir.listFiles();

            if (contents != null) {

                for (File f : contents) {

                    if (f.isDirectory()) {

                        dirsToScan.add(f);

                    } else if (f.isFile()) {

                        if (DEBUG) Log.v(TAG, "    " + f.getAbsolutePath());

                        allFiles.add(f.getAbsolutePath());

                    }

                }

            }

        }



        // That's the file set; now back it all up

        FileBackupHelper.performBackup(this, oldState, data, newState,

                (String[]) allFiles.toArray());

    }



    @Override

    public void onRestore(ParcelFileDescriptor data, ParcelFileDescriptor newState) {

    }



}