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# vim: set fileencoding=utf-8 ts=4 shiftwidth=4 softtabstop=4 expandtab:
from django import template
from django.template.defaultfilters import stringfilter
from oembed.core import replace
register = template.Library()
class IfIsNewNode(template.Node):
def __init__(self, arg1, arg2, nodelist_true, nodelist_false, negate):
self.arg1, self.arg2 = arg1, arg2
self.nodelist_true, self.nodelist_false = nodelist_true, nodelist_false
self.negate = negate
def render(self, context):
try:
val1 = template.resolve_variable(self.arg1, context)
except VariableDoesNotExist:
val1 = ""
try:
val2 = template.resolve_variable(self.arg2, context)
except VariableDoesNotExist:
val2 = ""
if (not self.negate and val1 > val2) or (self.negate and val1 <= val2):
return self.nodelist_true.render(context)
return self.nodelist_false.render(context)
def do_ifisnew(parser, token, negate):
"Returns true if message is new"
args = token.split_contents()
if len(args) != 3:
raise template.TemplateSyntaxError("'is_new' needs two arguments.")
end_tag = 'end' + args[0]
nodelist_true = parser.parse(('else', end_tag))
token = parser.next_token()
if token.contents == 'else':
nodelist_false = parser.parse((end_tag,))
parser.delete_first_token()
else:
nodelist_false = template.NodeList()
node = IfIsNewNode(args[1], args[2], nodelist_true, nodelist_false, negate)
return node
@register.tag
def ifisnew(parser, token):
return do_ifisnew(parser, token, False)
@register.tag
def ifisnotnew(parser, token):
return do_ifisnew(parser, token, True)
@stringfilter
def my_oembed(input, args):
args = args.split()
if len(args) > 1:
raise template.TemplateSyntaxError("Oembed tag takes only one (option" \
"al) argument: WIDTHxHEIGHT, where WIDTH and HEIGHT are positive " \
"integers.")
if len(args) == 1:
width, height = args[0].lower().split('x')
if not width and height:
raise template.TemplateSyntaxError("Oembed's optional WIDTHxHEIGH" \
"T argument requires WIDTH and HEIGHT to be positive integers.")
else:
width, height = None, None
kwargs = {}
if width and height:
kwargs['max_width'] = width
kwargs['max_height'] = height
return replace(input, **kwargs)
register.filter('my_oembed', my_oembed)
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