components.py 文件源码

def dot2graph(self, dot, format='svg'):
        # windows ???????????????????
        # ?????? NamedTemporaryFile ?????
        with NamedTemporaryFile(delete=False) as dotfile:
            dotfile.write(dot)
        outfile = NamedTemporaryFile(delete=False)
        os.system('dot -Efontname=sans -Nfontname=sans %s -o%s -T%s' % (
            dotfile.name, outfile.name, format))
        result = outfile.read()
        outfile.close()
        os.unlink(dotfile.name)
        os.unlink(outfile.name)
        return result