<s> """<STR_LIT>""" <EOL> from __future__ import print_function , unicode_literals <EOL> import re <EOL> from textwrap import dedent <EOL> from lusmu . core import Input , Node <EOL> import subprocess <EOL> def collect_nodes ( collected_nodes , * args ) : <EOL> """<STR_LIT>""" <EOL> if not args : <EOL> return <EOL> node = args [ <NUM_LIT:0> ] <EOL> rest = args [ <NUM_LIT:1> : ] <EOL> collect_nodes ( collected_nodes , * rest ) <EOL> if node in collected_nodes : <EOL> return <EOL> collected_nodes . add ( node ) <EOL> collect_nodes ( collected_nodes , * node . _dependents ) <EOL> if isinstance ( node , Node ) : <EOL> collect_nodes ( collected_nodes , * node . _iterate_inputs ( ) ) <EOL> def get_action_name ( action ) : <EOL> """<STR_LIT>""" <EOL> if hasattr ( action , '<STR_LIT:name>' ) : <EOL> return action . name <EOL> if hasattr ( action , '<STR_LIT>' ) : <EOL> return action . __name__ <EOL> if hasattr ( action , '<STR_LIT>' ) : <EOL> return action . func_name <EOL> return action . __class__ . __name__ <EOL> def format_node_default ( node_id , node ) : <EOL> shape = '<STR_LIT>' if isinstance ( node , Input ) else '<STR_LIT>' <EOL> action = ( '<STR_LIT>' <EOL> . format ( br = '<STR_LIT>' , <EOL> action = get_action_name ( node . _action ) ) <EOL> if isinstance ( node , Node ) <EOL> else '<STR_LIT>' ) <EOL> yield ( '<STR_LIT>' <EOL> '<STR_LIT>' <EOL> '<STR_LIT>' <EOL> '<STR_LIT>' <EOL> . format ( node_id = node_id , <EOL> name = node . name . replace ( '<STR_LIT::>' , '<STR_LIT>' ) , <EOL> action = action , <EOL> shape = shape ) ) <EOL> yield '<STR_LIT>' <EOL> def graphviz_lines ( nodes , node_filter , format_node ) : <EOL> """<STR_LIT>""" <EOL> all_nodes = set ( ) <EOL> collect_nodes ( all_nodes , * nodes ) <EOL> if node_filter : <EOL> all_nodes = [ n for n in all_nodes if node_filter ( n ) ] <EOL> all_nodes = sorted ( all_nodes , key = id ) <EOL> input_nodes = [ n for n in all_nodes if isinstance ( n , Input ) ] <EOL> yield '<STR_LIT>' <EOL> yield '<STR_LIT>' <EOL> yield '<STR_LIT>' <EOL> yield '<STR_LIT>' <EOL> for node in input_nodes : <EOL> yield '<STR_LIT>' . format ( id ( node ) ) <EOL> yield '<STR_LIT>' <EOL> for node in all_nodes : <EOL> for line in format_node ( '<STR_LIT>' . format ( id ( node ) ) , node ) : <EOL> yield line <EOL> for other in node . _dependents : <EOL> if other in all_nodes : <EOL> yield ( '<STR_LIT>' <EOL> . format ( node = id ( node ) , other = id ( other ) ) ) <EOL> yield '<STR_LIT:}>' <EOL> def visualize_graph ( nodes , filename , <EOL> node_filter = lambda node : True , <EOL> format_node = format_node_default ) : <EOL> """<STR_LIT>""" <EOL> image_format = filename . split ( '<STR_LIT:.>' ) [ - <NUM_LIT:1> ] . lower ( ) <EOL> graphviz = subprocess . Popen ( [ '<STR_LIT>' , <EOL> '<STR_LIT>' . format ( image_format ) , <EOL> '<STR_LIT>' , filename ] , <EOL> stdin = subprocess . PIPE ) <EOL> source = '<STR_LIT:\n>' . join ( graphviz_lines ( nodes , <EOL> node_filter , <EOL> format_node ) ) <EOL> graphviz . communicate ( source . encode ( '<STR_LIT:utf-8>' ) ) <EOL> if image_format == '<STR_LIT>' : <EOL> with open ( filename ) as svg_file : <EOL> svg = svg_file . read ( ) <EOL> svg = re . sub ( r'<STR_LIT>' , <EOL> dedent ( r'''<STR_LIT>''' ) , <EOL> svg , <EOL> re . S ) <EOL> with open ( filename , '<STR_LIT:w>' ) as svg_file : <EOL> svg_file . write ( svg ) <EOL> return source </s>
