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# Copyright (c) 2005-2006 LOGILAB S.A. (Paris, FRANCE).
# Copyright (c) 2005-2006 CEA Grenoble
# http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This program is free software; you can redistribute it and/or modify it under
# the terms of the CECILL license, available at
# http://www.inria.fr/valorisation/logiciels/Licence.CeCILL-V2.pdf
#
"""Provide the Ca class and some other rendering utilities.
Based on the konsole code from Lars Doelle.
@author: Lars Doelle
@author: Benjamin Longuet
@author: Frederic Mantegazza
@author: Cyrille Boullier
@author: Sylvain Thenault
@copyright: 2003, 2005-2006
@organization: CEA-Grenoble
@organization: Logilab
@license: CECILL
"""
__revision__ = "$Id: ca.py,v 1.16 2006-02-15 10:24:01 alf Exp $"
BASE_COLORS = 2+8
_INTENSITIES = 2
TABLE_COLORS = _INTENSITIES * BASE_COLORS
DEFAULT_FORE_COLOR = -1
DEFAULT_BACK_COLOR = 0
DEFAULT_RENDITION = 0
RE_BOLD = 2**0
RE_BLINK = 2**1
RE_UNDERLINE = 2**2
RE_REVERSE = 2**3
RE_CURSOR = 2**4
class Ca(object):
"""a character with background / foreground colors and rendition attributes
"""
__slots__ = ('c', 'f', 'b', 'r')
def __init__(self, c=u' ', f=DEFAULT_FORE_COLOR,
b=DEFAULT_BACK_COLOR, r=DEFAULT_RENDITION):
self.c = c # character
self.f = f # foreground color
self.b = b # background color
self.r = r # rendition
def __eq__(self, other):
"""implements the '==' operator"""
return (self.c == other.c and self.f == other.f and
self.b == other.b and self.r == other.r)
def __ne__(self, other):
"""implements the '!=' operator"""
return (self.c != other.c or self.f != other.f or
self.b != other.b or self.r != other.r)
def __repr__(self):
"""to help debugging"""
return '%r %s %s %r' % (self.c, self.f, self.b, self.r)
def isSpace(self):
"""return true if this character can be considered as a space"""
return self.c.isspace()
def charClass(self, word_characters=u":@-./_~"):
"""return a kind of category for this char
* space (' ')
* alpha numeric ('a')
* other (1)
"""
char = self.c
if char.isspace():
return ' '
if char.isalnum() or char in word_characters:
return 'a'
# everything else is weird
return 1
## # XXX for debugging
## def setC(self, c):
## assert c is None or isinstance(c, unicode)
## self._c = c
## def getC(self):
## return self._c
## c = property(getC, setC)
DCA = Ca() # the default character for optimization
class ColorEntry:
"""a color with additional attribute (transparent / bold)
"""
def __init__(self, c=None, tr=False, b=False):
self.color = c
self.transparent = tr # if used on bg
self.bold = b # if used on fg
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