app/django/utils/termcolors.py
author Pawel Solyga <Pawel.Solyga@gmail.com>
Mon, 28 Sep 2009 12:22:26 +0200
changeset 2987 db28a7db5cc6
parent 54 03e267d67478
permissions -rw-r--r--
Set new Melange version number to 0-5-20090928 in app.yaml.template.
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"""
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termcolors.py
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"""
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color_names = ('black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white')
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foreground = dict([(color_names[x], '3%s' % x) for x in range(8)])
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background = dict([(color_names[x], '4%s' % x) for x in range(8)])
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del color_names
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RESET = '0'
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opt_dict = {'bold': '1', 'underscore': '4', 'blink': '5', 'reverse': '7', 'conceal': '8'}
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def colorize(text='', opts=(), **kwargs):
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    """
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    Returns your text, enclosed in ANSI graphics codes.
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    Depends on the keyword arguments 'fg' and 'bg', and the contents of
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    the opts tuple/list.
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    Returns the RESET code if no parameters are given.
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    Valid colors:
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        'black', 'red', 'green', 'yellow', 'blue', 'magenta', 'cyan', 'white'
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    Valid options:
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        'bold'
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        'underscore'
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        'blink'
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        'reverse'
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        'conceal'
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        'noreset' - string will not be auto-terminated with the RESET code
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    Examples:
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        colorize('hello', fg='red', bg='blue', opts=('blink',))
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        colorize()
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        colorize('goodbye', opts=('underscore',))
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        print colorize('first line', fg='red', opts=('noreset',))
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        print 'this should be red too'
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        print colorize('and so should this')
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        print 'this should not be red'
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    """
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    text = str(text)
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    code_list = []
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    if text == '' and len(opts) == 1 and opts[0] == 'reset':
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        return '\x1b[%sm' % RESET
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    for k, v in kwargs.iteritems():
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        if k == 'fg':
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            code_list.append(foreground[v])
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        elif k == 'bg':
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            code_list.append(background[v])
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    for o in opts:
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        if o in opt_dict:
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            code_list.append(opt_dict[o])
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    if 'noreset' not in opts:
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        text = text + '\x1b[%sm' % RESET
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    return ('\x1b[%sm' % ';'.join(code_list)) + text
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def make_style(opts=(), **kwargs):
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    """
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    Returns a function with default parameters for colorize()
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    Example:
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        bold_red = make_style(opts=('bold',), fg='red')
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        print bold_red('hello')
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        KEYWORD = make_style(fg='yellow')
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        COMMENT = make_style(fg='blue', opts=('bold',))
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    """
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    return lambda text: colorize(text, opts, **kwargs)