jinja2 filters

gist.py

def gist(id, filename=None):
    if filename:
        embedgist = (
            '<script src="https://gist.github.com/%s.js?file=%s"></script>' % (
                id, filename))
    else:
        embedgist = (
            '<script src="https://gist.github.com/%s.js"></script>' % id)
    return embedgist

gravatar.py

def gravatar(email, size=100, rating='g', default='retro', force_default=False,
             force_lower=False, use_ssl=False):
    if use_ssl:
        url = "https://secure.gravatar.com/avatar/"
    else:
        url = "http://www.gravatar.com/avatar/"
    if force_lower:
        email = email.lower()
    hashemail = hashlib.md5(email).hexdigest()
    link = "{url}{hashemail}?s={size}&d={default}&r={rating}".format(
        url=url, hashemail=hashemail, size=size,
        default=default, rating=rating)
    if force_default:
        link = link + "&f=y"
    return link

html5_audiovideo.py

def videohtml5(url, width, height, autoplay=False, controls=True, preload=False):
    autoplay = 'autoplay="autoplay"' if autoplay else ''
    controls = 'controls="controls"' if controls else ''
    preload = 'preload="preload"' if preload else ''
    return """
    <video src="{src}" width="{width}" height="{height}" {autoplay} {controls} {preload}>
        <p>
            If you can't see this video, try with Frefox:<br />
            <a href="http://www.mozilla.org/firefox/"><img 
            border="0" alt="Get Firefox" title="Get Firefox" 
            src="http://sfx-images.mozilla.org/affiliates/Buttons/180x60/trust.gif" /></a>
        </p>
    </video>
    """.format(src=url, width=width, height=height, autoplay=autoplay, controls=controls, preload=preload)


def audiohtml5(url, autoplay=False, controls=True, preload=False):
    autoplay = 'autoplay="autoplay"' if autoplay else ''
    controls = 'controls="controls"' if controls else ''
    preload = 'preload="preload"' if preload else ''
    return """
    <audio src="{src}" {autoplay} {controls} {preload}>
        <p>
            If you can't heard this sound, try with Firefox:<br />
            <a href="http://www.mozilla.org/firefox/"><img 
            border="0" alt="Get Firefox" title="Get Firefox" 
            src="http://sfx-images.mozilla.org/affiliates/Buttons/180x60/trust.gif" /></a>
        </p>
    </video>
    """.format(src=url, autoplay=autoplay, controls=controls, preload=preload)

latexmath.py

def latex_math(latex):
    return "https://chart.googleapis.com/chart?cht=tx&chl=" + latex

placekitten.py

def placekitten(width, height, color):
    host = "http://placekitten.com/g/" if color else "http://placekitten.com/"
    url = "%s%d/%d" % (host, width, height)        
    return '<img src="%s" width="%d" height="%d" alt="I can haz placeholder?" />' % (url, width, height)

video.py

def youtube(id, width=560, height=315, related_videos=True, ssl=False, cookie=True):
    related = "" if related_videos else "?rel=0"
    protocol = "https://" if ssl else "http://"
    embed_youtube_url = protocol + "www.youtube.com/embed/" if cookie else "www.youtube-nocookie.com/embed/"
    return '<iframe width="%d" height="%d" src="%s%s%s" frameborder="0" allowfullscreen></iframe>' % (width, height, embed_youtube_url, id, related)

import hashlib

def gravatar(email, size=100, rating='g', default='retro', force_default=False,
force_lower=False, use_ssl=False):
if use_ssl:
url = "https://secure.gravatar.com/avatar/"
else:
url = "http://www.gravatar.com/avatar/"
if force_lower:
email = email.lower()
hashemail = hashlib.md5(email).hexdigest()
link = "{url}{hashemail}?s={size}&d={default}&r={rating}".format(
url=url, hashemail=hashemail, size=size,
default=default, rating=rating)
if force_default:
link = link + "&f=y"