Android Open Source - Android-Backup Backup

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.Akkad.AndroidBackup;
//from w  ww . j  a v  a 2  s .c  om
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Calendar;

import android.util.Log;

/**
 * @author Raafat Akkad
 */
public class Backup {
  private static final String TAG = "Android Backup Backup";
  private String apkLocation;
  private String app_apk_md5;
  private String app_data_md5;
  private int app_install_location; // 0=Normal App installed to /data/app/ , 1=System App installed to /system/app/ , 2=Normal App installed to the SD Card
  private String app_label;
  private String app_package_name;
  private int app_target_sdk_version;
  private Calendar backupDate;
  private String dataLocation;
  private String formattedDate;

  private String informationLocation;

  /**
   * @param backupDate
   * @param app_label
   * @param app_package_name
   * @param app_target_sdk_version
   * @param app_apk_md5
   * @param app_data_md5
   * @param app_install_location
   */
  public Backup(Calendar backupDate, String app_label, String app_package_name, int app_target_sdk_version, String app_apk_md5, String app_data_md5, int app_install_location) {
    this.backupDate = backupDate;
    this.app_label = app_label;
    this.app_package_name = app_package_name;
    this.app_target_sdk_version = app_target_sdk_version;
    this.app_apk_md5 = app_apk_md5;
    this.app_data_md5 = app_data_md5;
    this.app_install_location = app_install_location;
    generateDate();
    generateAPKAndDataLocations();
  }

  /**
   */
  public Backup(String informationFilePath) {
    loadBackupInformation(informationFilePath);
    generateDate();
  }

  private void generateAPKAndDataLocations() {
    this.apkLocation = BackupStore.getBackupFolderLocation() + app_package_name + "-" + formattedDate + ".apk";
    this.dataLocation = BackupStore.getBackupFolderLocation() + app_package_name + "-" + formattedDate + ".tar.gz";
  }

  private void generateDate() {
    SimpleDateFormat df = new SimpleDateFormat("yyyyMMdd-HHmmss");
    formattedDate = df.format(backupDate.getTime()); // Date is saved so it is the same for the backed up apk, data and app information
  }

  /**
   * @return the apkLocation
   */
  public String getApkLocation() {
    return BackupStore.getBackupFolderLocation() + app_package_name + "-" + formattedDate + ".apk";
  }

  /**
   * @return the app_apk_md5
   */
  public String getApp_apk_md5() {
    return app_apk_md5;
  }

  /**
   * @return the app_data_md5
   */
  public String getApp_data_md5() {
    return app_data_md5;
  }

  /**
   * @return the app_install_location
   */
  public int getApp_install_location() {
    return app_install_location;
  }

  /**
   * @return the app_label
   */
  public String getApp_label() {
    return app_label;
  }

  /**
   * @return the app_package_name
   */
  public String getApp_package_name() {
    return app_package_name;
  }

  /**
   * @return the app_target_sdk_version
   */
  public int getApp_target_sdk_version() {
    return app_target_sdk_version;
  }

  /**
   * @return the backupDate
   */
  public Calendar getBackupDate() {
    return backupDate;
  }

  /**
   * @return the dataLocation
   */
  public String getDataLocation() {
    return BackupStore.getBackupFolderLocation() + app_package_name + "-" + formattedDate + ".tar.gz";
  }

  /**
   * @return the formattedDate
   */
  public String getFormattedDate() {
    return formattedDate;
  }

  /**
   * @return the informationLocation
   */
  public String getInformationLocation() {
    return informationLocation;
  }

  public void loadBackupInformation(String informationFilePath) {
    File backupInformationFile = new File(informationFilePath);
    FileInputStream fileInput;
    try {
      fileInput = new FileInputStream(backupInformationFile);
    } catch (FileNotFoundException e1) {
      Log.e(TAG, "Could not read file / File doesn't exist");
      return;
    }

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

    DataInputStream dataInputStream = new DataInputStream(fileInput);

    String currentLine; // temp variable to hold current line
    try {
      while ((currentLine = dataInputStream.readLine()) != null) { // read the next line, saving it to temp and then check that it is not null
        if (!currentLine.contains("#")) { // If the line is not a comment
          inputArray.add(currentLine);
        }
      }
    } catch (IOException e) {
      Log.e(TAG, "Could not read line");
      return;
    }

    try {
      fileInput.close();
    } catch (IOException e) {
      Log.e(TAG, "Could not close file");
    }

    SimpleDateFormat dateParser = new SimpleDateFormat("dd MMM yyyy HH:mm:ss zzz");

    try {
      backupDate = Calendar.getInstance();
      backupDate.setTime(dateParser.parse(inputArray.get(0).split("=")[1]));
    } catch (ParseException e) {
      Log.e(TAG, "Could not parse date");
    }

    this.app_label = inputArray.get(1).split("=")[1];
    this.app_package_name = inputArray.get(2).split("=")[1];
    this.app_target_sdk_version = Integer.parseInt(inputArray.get(3).split("=")[1]);
    this.app_apk_md5 = inputArray.get(4).split("=")[1];
    this.app_data_md5 = inputArray.get(5).split("=")[1];
    this.app_install_location = Integer.parseInt(inputArray.get(6).split("=")[1]);
    this.informationLocation = informationFilePath;
    generateDate();
    generateAPKAndDataLocations();
  }

  /**
   * Saves information about the backup to a text file
   */
  public void saveBackupInformation() {
    File backupInformationFile = new File(BackupStore.getBackupFolderLocation() + app_package_name + "-" + formattedDate + ".information");
    try {
      backupInformationFile.createNewFile();
    } catch (IOException e) {
      Log.e(TAG, "The Information File could not be created");
      return;
    }

    FileWriter fileWriter;
    try {
      fileWriter = new FileWriter(backupInformationFile);
      BufferedWriter out = new BufferedWriter(fileWriter);

      out.write("# Android Backup\n");
      out.write("backup_time=" + backupDate.getTime().toGMTString() + '\n');
      out.write("app_label=" + app_label + '\n');
      out.write("app_package_name=" + app_package_name + '\n');
      out.write("app_target_sdk_version=" + app_target_sdk_version + '\n');
      out.write("app_apk_md5=" + app_apk_md5 + '\n');
      out.write("app_data_md5=" + app_data_md5 + '\n');
      out.write("# 0=Normal App installed to /data/app/ , 1=System App installed to /system/app/ , 2=Normal App installed to the SD Card\n");
      out.write("app_install_location=" + app_install_location);
      out.flush(); // Flushes the writer
      out.close(); // Close the file
    } catch (IOException e) {
      Log.e(TAG, "Could not write backup information to file");
      return;
    }
  }

  /*
   * (non-Javadoc)
   * 
   * @see java.lang.Object#toString()
   */
  @Override
  public String toString() {
    return "Backup [app_apk_md5=" + app_apk_md5 + ", app_data_md5=" + app_data_md5 + ", app_install_location=" + app_install_location + ", app_label=" + app_label + ", app_package_name="
        + app_package_name + ", app_target_sdk_version=" + app_target_sdk_version + ", backupDate=" + backupDate + ", formattedDate=" + formattedDate + ", informationLocation="
        + informationLocation + "]";
  }

}

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