def parse():
form = IndexForm(request.form)
options = dict(font=None, shadow=None, png=None)
if form.validate():
fout = StringIO.StringIO()
fin = form.data['source']
svg = subprocess.Popen(['/usr/bin/dot', '-Tsvg'], stdin=subprocess.PIPE, stdout=subprocess.PIPE).communicate(input=fin)[0]
scruffy.transform(svg, fout, options)
if form.data['type'] == 'png':
return cairosvg.svg2png(fout)
return render_template('index.html', form=form, svg=fout.getvalue())
return render_template('index.html', form=form)
