colorize.py

from django import template
from django.utils.safestring import mark_safe
import re

register = template.Library()

@register.filter
def colorize(t, a='white'):

    if t == None:
        return None

    t = t.replace(" ", " ")
    t = re.sub("(\^)?$", "^",     t)
    t = re.sub("\^\^",   "&#94^", t)
    t = re.sub("(\^)?$", "",      t)
    t = re.sub("\^<",    "^|",    t)
    t = re.sub("\<",     "<",     t)
    t = re.sub("\^>",    "^^",    t)
    t = re.sub("\>",     ">",     t)
    t = re.sub("\^\^",   "^>",    t)

    colors = {
        '000000' : [ '0', 'P', 'p', ],
        'ff0000' : [ '1', 'Q', 'q', ],
        '00ff00' : [ '2', 'R', 'r', ],
        'ffff00' : [ '3', 'S', 's', ],
        '0000ff' : [ '4', 'T', 't', ],
        '00ffff' : [ '5', 'U', 'u', ],
        'ff00ff' : [ '6', 'V', 'v', ],
        'ffffff' : [ '7', 'W', 'w', ],
        'ff7f00' : [ '8', 'X', 'x', ],
        '7f7f7f' : [ '9', 'Y', 'y', ],
        'bfbfbf' : [ ':', 'Z', 'z', ';', '[', '{', ],
        '007f00' : [ '<', '\\', '|', ],
        '7f7f00' : [ '=', ']', '}', ],
        '00007f' : [ '>', '^', '~', ],
        '7f0000' : [ '?', '_', ],
        '7f3f00' : [ '@', '`', ],
        'ff9919' : [ 'A', 'a', '!', ],
        '007f7f' : [ 'B', 'b', '"', ],
        '7f007f' : [ 'C', 'c', '#', ],
        '007fff' : [ 'D', 'd', '$', ],
        '7F00ff' : [ 'E', 'e', '%', ],
        '3399cc' : [ 'F', 'f', '&', ],
        'ccffcc' : [ 'G', 'g', '\'',],
        '006633' : [ 'H', 'h', '(', ],
        'ff0033' : [ 'I', 'i', ')', ],
        'b21919' : [ 'J', 'j', '*', ],
        '993300' : [ 'K', 'k', '+', ],
        'cc9933' : [ 'L', 'l', ',', ],
        '999933' : [ 'M', 'm', '-', ],
        'ffffbf' : [ 'N', 'n', '.', ],
        'ffff7f' : [ 'O', 'o', '/', ],
    }

    for color, opts in colors.iteritems():
        for code in opts:
            t = t.replace('^^%s' % code + code, '</span><span style="color:#%s">' % color)
:
    for color, opts in colors.iteritems():
        for code in opts:
            t = t.replace('^%s' % code, '</span><span style="color:#%s">' % color)

    return mark_safe('<span style="color:%s">%s</span>' % (a, t))

@register.filter
def wrap(t):
    return t.replace('&nbsp;', ' ')

colorize.is_safe = True
wrap.is_safe     = True