import creoleparser
import genshi
import datetime
from settings import DATE_FORMAT_SHORT, DATE_FORMAT_FULL


def formatter(text):
    if not text:
        return u""
    text = text.replace("\\", "\\\\")
    html = creoleparser.text2html(text, encoding=None).strip()
    if html.startswith("<p>") and html.endswith("</p>"):
        html = html[3:-4]
    return genshi.Markup(html)


last_day = datetime.datetime.today() - datetime.timedelta(days=1)
def show_timestamp(date):
    if date <= last_day:
        template = DATE_FORMAT_SHORT
    else:
        template = DATE_FORMAT_FULL
    return date.strftime(template)

def nav_links(prev_link, next_link):
    result = []
    if prev_link:
        result.append('<a href="%s" title="zeige neuere Eintr&auml;ge">aktuellere</a>' % prev_link)
    if next_link:
        result.append('<a href="%s" title="zeige &auml;ltere Eintr&auml;ge">&auml;ltere</a>' % next_link)
    return genshi.Markup(" | ".join(result))