from jinja2.utils import Markup
from jinja2._compat import text_type
import re


def do_stringtags_and_img(value):
    """
    Strip SGML/XML tags and replace adjacent whitespace by one space.
    """
    if hasattr(value, '__html__'):
        value = value.__html__()
    no_img_part = re.sub(r'<img(.?)*src=\"(.?)*[\"\s\/>]+?', "", value)
    return Markup(text_type(no_img_part)).striptags()


def sidebar(value):
    value = '%s' % value
    if value.startswith('archives') or value.startswith('category'):
        return 'right-sidebar'
    elif value == 'index':
        return 'index'
    else:
        return 'no-sidebar'