def header(text, width=80, palette=_DefaultPalette, nonewline=False):

    # Calculate the length of the filler, accounting for padding
    # and the brackets.
    flen = width - len(text)-6

    # Format the output. Ideally we would have a global palette defined
    # and we'd pull colors from that but for now, they're hardcoded.
    out = "|%s--[|n |%s%s|n |%s]%s|n" % (palette['header'], palette['headertxt'], text, palette['header'], flen * "-")

    # Append a newline if desired.
    if nonewline:
        return out
    else:
        return "%s\n" % out

def subheader(text, width=80, palette=_DefaultPalette, nonewline=False):

    if not text or len(text) == 0:
        return "|R%s|n" % ("-" * width)

    # Determine the width of the text, accounting for padding.
    l = len(text) + 2

    # Calculate the length of each segment.
    lsp = rsp = (width - l) / 2

    # If the length of the string is not evenly divisible by 2,
    # our header will be one character off. Fix that.
    rsp += (width - l) % 2

    # Format the output.
    out = "|R%s|n |530%s|n |R%s|n" % (lsp * "-", text, rsp * "-")

    # Add a trailing newline, if desired.
    if nonewline:
        return out
    else:
        return "%s\n" % out


# ---------------------------------------------------------------------------
#
# ---------------------------------------------------------------------------
def footer(text, width=80, palette=_DefaultPalette, nonewline=False):

    # Calculate the length of the filler, accounting for padding and the
    # static parts. This means 2 spaces for padding, and 4
    # for the static parts ie the '[]--' characters. 6 total.
    flen = width - len(text) - 6

    # Format the output.
    out = "|R%s[|n |530%s|n |R]--|n" % (flen * '-', text)

    # Append a newline if desired.
    if nonewline:
        return out
    else:
        return "%s\n" % out