docs: public static String reader2String(final Reader reader) throws IOException
  	{
  		final StringBuffer stringBuffer = new StringBuffer();
  		final char[] charArray = new char[FileConst.BLOCKSIZE];
  		int tmp;
  		while ((tmp = reader.read(charArray)) > 0)
  		{
  			stringBuffer.append(charArray, 0, tmp);
  		}
  		return stringBuffer.toString();
  	}