def style(text, fg=None, bg=None, bold=None, dim=None, underline=None,
          blink=None, reverse=None, reset=True):
    """Styles a text with ANSI styles and returns the new string.  By
    default the styling is self contained which means that at the end
    of the string a reset code is issued.  This can be prevented by
    passing ``reset=False``.

    Examples::

        click.echo(click.style('Hello World!', fg='green'))
        click.echo(click.style('ATTENTION!', blink=True))
        click.echo(click.style('Some things', reverse=True, fg='cyan'))

    Supported color names:

    * ``black`` (might be a gray)
    * ``red``
    * ``green``
    * ``yellow`` (might be an orange)
    * ``blue``
    * ``magenta``
    * ``cyan``
    * ``white`` (might be light gray)
    * ``reset`` (reset the color code only)

    .. versionadded:: 2.0

    :param text: the string to style with ansi codes.
    :param fg: if provided this will become the foreground color.
    :param bg: if provided this will become the background color.
    :param bold: if provided this will enable or disable bold mode.
    :param dim: if provided this will enable or disable dim mode.  This is
                badly supported.
    :param underline: if provided this will enable or disable underline.
    :param blink: if provided this will enable or disable blinking.
    :param reverse: if provided this will enable or disable inverse
                    rendering (foreground becomes background and the
                    other way round).
    :param reset: by default a reset-all code is added at the end of the
                  string which means that styles do not carry over.  This
                  can be disabled to compose styles.
    """
    bits = []
    if fg:
        try:
            bits.append('\033[%dm' % (_ansi_colors.index(fg) + 30))
        except ValueError:
            raise TypeError('Unknown color %r' % fg)
    if bg:
        try:
            bits.append('\033[%dm' % (_ansi_colors.index(bg) + 40))
        except ValueError:
            raise TypeError('Unknown color %r' % bg)
    if bold is not None:
        bits.append('\033[%dm' % (1 if bold else 22))
    if dim is not None:
        bits.append('\033[%dm' % (2 if dim else 22))
    if underline is not None:
        bits.append('\033[%dm' % (4 if underline else 24))
    if blink is not None:
        bits.append('\033[%dm' % (5 if blink else 25))
    if reverse is not None:
        bits.append('\033[%dm' % (7 if reverse else 27))
    bits.append(text)
    if reset:
        bits.append(_ansi_reset_all)
    return ''.join(bits)