Method checkOrMoveFile

android/src/org/coolreader/crengine/Engine.java:858–876

Checks whether file under old path exists, and moves it to better place when necessary. Can be slow if big file is being moved. @param bestPlace is desired directory for file (e.g. new place after migration) @param oldPlace is old (obsolete) directory for file (e.g. location from older releases) @pa

( File bestPlace, File oldPlace, String filename )

	 * @return file to use (from old or new place)
	 */
	public static File checkOrMoveFile( File bestPlace, File oldPlace, String filename ) {
		if ( !bestPlace.exists() ) {
			bestPlace.mkdirs();
		}
		File oldFile = new File(oldPlace, filename);
		if ( bestPlace.isDirectory() && bestPlace.canWrite() ) {
			File bestFile = new File(bestPlace, filename);
			if (bestFile.exists())
				return bestFile; // already exists
			if (oldFile.exists() && oldFile.isFile()) {
				// move file
				if (moveFile(oldFile, bestFile))
					return bestFile;
				return oldFile;
			}
			return bestFile;
		}
		return oldFile;
	}

	private static String CR3_SETTINGS_DIR_NAME;