/**
* Creates a new Backup
*
* @param useExternalStorage use external storage path instead of internal?
* @param name name of backup
* @param force overwrite existing folders?
* @throws CreateBackupException
* @throws BackupAlreadyExistsException
*/
public void createBackup(boolean useExternalStorage, @NonNull String name, boolean force)
throws CreateBackupException, BackupAlreadyExistsException {
if (useExternalStorage) {
// TODO: kp wie man internen und externen speicher unterscheidet
} else {
File src;
File dst;
dst = new File(SmartphonePreferencesHandler.getBackupPath() + File.separator + name);
if (!dst.exists()) {
dst.mkdirs();
} else {
if (force) {
// remove existing backup
try {
if (!deleteRecursive(dst)) {
throw new CreateBackupException("Error deleting existing Backup");
}
} catch (Exception e) {
Log.e(e);
throw new CreateBackupException(e);
}
dst.mkdirs();
} else {
throw new BackupAlreadyExistsException();
}
}
try {
// copy database
src = new File(context.getFilesDir().getParent() + File.separator + "databases");
dst =
new File(
SmartphonePreferencesHandler.getBackupPath()
+ File.separator
+ name
+ File.separator
+ "databases");
if (src.exists()) {
copyDirectory(src, dst);
}
// copy preferences
src = new File(context.getFilesDir().getParent() + File.separator + "shared_prefs");
dst =
new File(
SmartphonePreferencesHandler.getBackupPath()
+ File.separator
+ name
+ File.separator
+ "shared_prefs");
if (src.exists()) {
copyDirectory(src, dst);
}
} catch (Exception e) {
Log.e(e);
throw new CreateBackupException(e);
}
}
}
/**
* Rename existing Backup
*
* @param oldName old backup name
* @param newName new backup name
* @throws BackupNotFoundException
* @throws BackupAlreadyExistsException
*/
public void renameBackup(@NonNull String oldName, @NonNull String newName)
throws BackupNotFoundException, BackupAlreadyExistsException {
File oldFolder =
new File(SmartphonePreferencesHandler.getBackupPath() + File.separator + oldName);
File newFolder =
new File(SmartphonePreferencesHandler.getBackupPath() + File.separator + newName);
if (!oldFolder.exists()) {
throw new BackupNotFoundException();
}
if (newFolder.exists()) {
throw new BackupAlreadyExistsException();
}
oldFolder.renameTo(newFolder);
}
/**
* Get all Backups
*
* @return List of Backups
*/
@NonNull
public ArrayList<Backup> getBackups() {
ArrayList<Backup> backups = new ArrayList<>();
File backupDir = new File(SmartphonePreferencesHandler.getBackupPath());
FileFilter backupFileFilter =
new FileFilter() {
@Override
public boolean accept(File pathname) {
if (pathname.list() == null) {
return false;
}
List<String> subFolders = Arrays.asList(pathname.list());
return pathname.isDirectory()
&& subFolders.contains("shared_prefs")
&& subFolders.contains("databases");
}
};
if (backupDir.exists()) {
for (File file : backupDir.listFiles(backupFileFilter)) {
backups.add(
new Backup(
file.getName(),
new Date(file.lastModified()),
backupDir + File.separator + file.getName(),
false));
}
}
return backups;
}
/**
* Restore Backup
*
* @param name name of backup
* @throws BackupNotFoundException
* @throws RestoreBackupException
*/
public void restoreBackup(@NonNull String name)
throws BackupNotFoundException, RestoreBackupException {
// create source path object
File src = new File(SmartphonePreferencesHandler.getBackupPath() + File.separator + name);
if (src.exists()) {
try {
// create destination path object
File dst = new File(context.getFilesDir().getParent());
// delete existing files
for (File fileOrFolder : dst.listFiles()) {
if (fileOrFolder
.getPath()
.equals(context.getFilesDir().getParent() + File.separator + "shared_prefs")
|| fileOrFolder
.getPath()
.equals(context.getFilesDir().getParent() + File.separator + "databases")) {
deleteRecursive(fileOrFolder);
}
}
// copy directory to system folder
copyDirectory(src, dst);
} catch (Exception e) {
Log.e(e);
throw new RestoreBackupException(e);
}
} else {
throw new BackupNotFoundException();
}
}
/**
* Remove a Backup
*
* @param name name of backup
* @throws BackupNotFoundException
* @throws RemoveBackupException
*/
public void removeBackup(@NonNull String name)
throws BackupNotFoundException, RemoveBackupException {
try {
File backupFolder =
new File(SmartphonePreferencesHandler.getBackupPath() + File.separator + name);
if (!backupFolder.exists()) {
throw new BackupNotFoundException();
}
deleteRecursive(backupFolder);
} catch (Exception e) {
Log.e(e);
throw new RemoveBackupException(e);
}
}
