def _render(template, callable_, args, data, as_unicode=False):
"""create a Context and return the string output of the given template and template callable."""
if as_unicode:
buf = util.FastEncodingBuffer(unicode=True)
elif template.output_encoding:
buf = util.FastEncodingBuffer(unicode=as_unicode, encoding=template.output_encoding, errors=template.encoding_errors)
else:
buf = util.StringIO()
context = Context(buf, **data)
context._with_template = template
_render_context(template, callable_, context, *args, **_kwargs_for_callable(callable_, data))
return context._pop_buffer().getvalue()
def _exec_template(callable_, context, args=None, kwargs=None):
"""execute a rendering callable given the callable, a Context, and optional explicit arguments
the contextual Template will be located if it exists, and the error handling options specified
on that Template will be interpreted here.
"""
template = context._with_template
if template is not None and (template.format_exceptions
or template.error_handler):
error = None
try:
callable_(context, *args, **kwargs)
except Exception, e:
error = e
except:
e = sys.exc_info()[0]
error = e
if error:
if template.error_handler:
result = template.error_handler(context, error)
if not result:
raise error
else:
context._buffer_stack = [util.StringIO()]
error_template = exceptions.html_error_template()
context._with_template = error_template
error_template.render_context(context, error=error)
else:
callable_(context, *args, **kwargs)
