dot_parser.py 文件源码

def parse_dot_data(data):

    global top_graphs

    top_graphs = list()

    if data.startswith(codecs.BOM_UTF8):
        data = data.decode( 'utf-8' )

    try:

        graphparser = graph_definition()

        if pyparsing_version >= '1.2':
            graphparser.parseWithTabs()

        tokens = graphparser.parseString(data)

        if len(tokens) == 1:
            return tokens[0]
        else:
            return [g for g in tokens]

    except ParseException, err:

        print err.line
        print " "*(err.column-1) + "^"
        print err
        return None