# -*- coding: utf-8 -*-

"""

    sphinx.util.console

    ~~~~~~~~~~~~~~~~~~~

    Format colored console output.

    :copyright: 2007-2008 by Georg Brandl.

    :license: BSD.

"""

import os

codes = {}

def get_terminal_width():

    """Borrowed from the py lib."""

    try:

        import os, termios, fcntl, struct

        call = fcntl.ioctl(0, termios.TIOCGWINSZ, "\000"*8)

        height, width = struct.unpack("hhhh", call)[:2]

        terminal_width = width

    except (SystemExit, KeyboardInterrupt):

        raise

    except:

        # FALLBACK

        terminal_width = int(os.environ.get('COLUMNS', 80))-1

    return terminal_width

_tw = get_terminal_width()

def print_and_backspace(text, func):

    if not codes:

        # if no coloring, don't output fancy backspaces

        func(text)

    else:

        func(text.ljust(_tw) + _tw * "\b")

def color_terminal():

    if 'COLORTERM' in os.environ:

        return True

    term = os.environ.get('TERM', 'dumb').lower()

    if 'xterm' in term or 'color' in term:

        return True

    return False

def nocolor():

    codes.clear()

def coloron():

    codes.update(_orig_codes)

def colorize(name, text):

    return codes.get(name, '') + text + codes.get('reset', '')

def create_color_func(name):

    def inner(text):

        return colorize(name, text)

    globals()[name] = inner

_attrs = {

    'reset':     '39;49;00m',

    'bold':      '01m',

    'faint':     '02m',

    'standout':  '03m',

    'underline': '04m',

    'blink':     '05m',

}

for _name, _value in _attrs.items():

    codes[_name] = '\x1b[' + _value

_colors = [

    ('black',     'darkgray'),

    ('darkred',   'red'),

    ('darkgreen', 'green'),

    ('brown',     'yellow'),

    ('darkblue',  'blue'),

    ('purple',    'fuchsia'),

    ('turquoise', 'teal'),

    ('lightgray', 'white'),

]

for i, (dark, light) in enumerate(_colors):

    codes[dark] = '\x1b[%im' % (i+30)

    codes[light] = '\x1b[%i;01m' % (i+30)

_orig_codes = codes.copy()

for _name in codes:

    create_color_func(_name)