@register.tag
def ssi(parser, token):
    """
    Outputs the contents of a given file into the page.

    Like a simple "include" tag, the ``ssi`` tag includes the contents
    of another file -- which must be specified using an absolute path --
    in the current page::

        {% ssi "/home/html/ljworld.com/includes/right_generic.html" %}

    If the optional "parsed" parameter is given, the contents of the included
    file are evaluated as template code, with the current context::

        {% ssi "/home/html/ljworld.com/includes/right_generic.html" parsed %}
    """
    bits = token.split_contents()
    parsed = False
    if len(bits) not in (2, 3):
        raise TemplateSyntaxError("'ssi' tag takes one argument: the path to"
                                  " the file to be included")
    if len(bits) == 3:
        if bits[2] == 'parsed':
            parsed = True
        else:
            raise TemplateSyntaxError("Second (optional) argument to %s tag"
                                      " must be 'parsed'" % bits[0])
    filepath = parser.compile_filter(bits[1])
    return SsiNode(filepath, parsed, legacy_filepath=False)
dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.4/django/templatetags/future.py/ssi/original