Convert Trac WikiFormating to markdown

gistfile1.txt

#!/usr/bin/python
# based on: https://gist.github.com/sgk/1286682

text = """
"""


import datetime
import re



text = re.sub('\r\n', '\n', text)
text = re.sub(r'{{{(.*?)}}}', r'`\1`', text)
def indent4(m):
    return '\n    ' + m.group(1).replace('\n', '\n    ')
text = re.sub(r'(?sm){{{\n(.*?)\n}}}', indent4, text)
text = re.sub(r'(?m)^====\s+(.*?)\s+====$', r'#### \1', text)
text = re.sub(r'(?m)^===\s+(.*?)\s+===$', r'### \1', text)
text = re.sub(r'(?m)^==\s+(.*?)\s+==$', r'## \1', text)
text = re.sub(r'(?m)^=\s+(.*?)\s+=$', r'# \1', text)
text = re.sub(r'^       * ', r'****', text)
text = re.sub(r'^     * ', r'***', text)
text = re.sub(r'^   * ', r'**', text)
text = re.sub(r'^ * ', r'*', text)
text = re.sub(r'^ \d+. ', r'1.', text)

a = []
for line in text.split('\n'):
    if not line.startswith('    '):
      line = re.sub(r'\[(https?://[^\s\[\]]+)\s([^\[\]]+)\]', r'[\2](\1)', line)
      line = re.sub(r'\[(wiki:[^\s\[\]]+)\s([^\[\]]+)\]', r'[\2](/\1/)', line)
      line = re.sub(r'\!(([A-Z][a-z0-9]+){2,})', r'\1', line)
      line = re.sub(r'\'\'\'(.*?)\'\'\'', r'*\1*', line)
      line = re.sub(r'\'\'(.*?)\'\'', r'_\1_', line)
    a.append(line)
print '\n'.join(a)