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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def apply_backspaces_and_linefeeds(text):
 """ Interpret backspaces and linefeeds in text like a terminal would. Interpret text like a terminal by removing backspace and linefeed characters and applying them line by line. If final line ends with a carriage it keeps it to be concatenable with next output chunk. """

    orig_lines = text.split('\n')
    orig_lines_len = len(orig_lines)
    new_lines = []
    for orig_line_idx, orig_line in enumerate(orig_lines):
        chars, cursor = [], 0
        orig_line_len = len(orig_line)
        for orig_char_idx, orig_char in enumerate(orig_line):
            if orig_char == '\r' and (orig_char_idx != orig_line_len - 1 or
                                      orig_line_idx != orig_lines_len - 1):
                cursor = 0
            elif orig_char == '\b':
                cursor = max(0, cursor - 1)
            else:
                if (orig_char == '\r' and
                        orig_char_idx == orig_line_len - 1 and
                        orig_line_idx == orig_lines_len - 1):
                    cursor = len(chars)
                if cursor == len(chars):
                    chars.append(orig_char)
                else:
                    chars[cursor] = orig_char
                cursor += 1
        new_lines.append(''.join(chars))
    return '\n'.join(new_lines)