User:The Anome/rmcolors.py

import string, re, sys

data = sys.stdin.readlines()

x_style_pattern = r"(?P<r>[a-z]*style\s*?=)[^|]*?(background:|color:)[^|]*"
color_pattern = "\{\{colors?\|(?:(?:[^\|}]*\|)*)(?P<r>[^\}\|]+)\}\}"
span_pattern = r"<span[^<>]+(?:background|color)[^<>]*>(?P<r>[^<>]*)</span>"
pipelink_pattern = r"\[\[\s*(?P<r>[^]|]+)\s*\|\s*\1\s*\]\]"

def convert_line(line):
    # Strip trailing newline ONLY                                                                               
    while line[-1:] == "\n":
        line = line[:-1]
    oldline = line

#    print "style:", re.findall(x_style__pattern, line)                                                         
#    print "color:", re.findall(color_pattern, line)                                                            
#    print "span:", re.findall(span_pattern, line)                                                              
    line = re.sub(x_style_pattern, "\g<r>", line)
    line = re.sub(color_pattern, "\g<r>", line)
    line = re.sub(span_pattern, "\g<r>", line)
#    print "pipelink:", re.findall(pipelink_pattern, line)                                                      
    line = re.sub(pipelink_pattern, "[[\g<r>]]", line)

    # ignore edits that changed only whitespace                                                                 
    if string.split(line) == string.split(oldline):
        return oldline
    else:
        return line

for line in data:
    print convert_line(line)