import re
import translitcodec # needed to install it

from django.template import Library
from django.template.defaultfilters import stringfilter
from django.utils.safestring import mark_safe

register = Library()

PUNCT_RE = re.compile(r'[\t !"#$%&\'()*\-/<=>?@\[\\\]^_`{|},.]+')


@stringfilter
def slugify(value, delim=u'-'):
    """
    Generates an ASCII-only slug.
    
    Borrowed from http://flask.pocoo.org/snippets/5/
    """
    result = []
    for word in PUNCT_RE.split(value.lower()):
        word = word.encode('translit/long')
        if word:
            result.append(word)
    return mark_safe(unicode(delim.join(result)))
slugify.is_safe = True