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import sys
import json
import html
import graphviz
def shorten(s, length=8):
if type(s) == list:
return "[...]"
s = str(s)
if len(s) > length:
return s[:length-3]
else:
return s
def edge_label(name, net):
bgcolors = {
"default": "white",
"OANALOG": "turquoise",
"EANALOG": "orange",
}
try:
bgcolor = bgcolors[net["type"]]
except:
bgcolor = bgcolors["default"]
short_name = name
if short_name.startswith('ROOT/'):
short_name = short_name[5:]
attributes = [f'<table style="rounded" border="0" cellborder="1" cellspacing="10" bgcolor="{bgcolor}" cellpadding="4" align="center">']
attributes.append(f'<tr><td bgcolor="grey91" port="head"><b>{html.escape(short_name)}</b></td></tr>')
attributes.append(f'<tr><td bgcolor="{bgcolor}" port="middle" border="0"><table border="0" cellborder="1" cellspacing="0">')
# attributes.append(f'<tr><td bgcolor="{bgcolor}"><table border="0" cellborder="1" cellspacing="0" cellpadding="0">')
attributes.append(f'<tr><td bgcolor="grey91">Type</td><td bgcolor="white">{net["type"]}</td></tr>')
attributes.append(f'<tr><td bgcolor="grey91">Bidirectional</td><td bgcolor="white">{"true" if net["bidirectional"] else "false"}</td></tr>')
attributes.append(f'<tr><td bgcolor="grey91">Size</td><td bgcolor="white">{net["size"]}</td></tr>')
attributes.append(f'<tr><td bgcolor="grey91">Readers</td><td bgcolor="white">{net["readers"]}</td></tr>')
attributes.append(f'<tr><td bgcolor="grey91">Writers</td><td bgcolor="white">{net["writers"]}</td></tr>')
attributes.append(f'</table></td></tr>')
attributes.append('</table>')
return f'"{name}" [label=<{"".join(attributes)}> shape=none fillcolor="{bgcolor}" margin="0.05"]'
def node_label(element):
attributes = ['<table border="0" cellborder="1" cellspacing="0" cellpadding="4" align="center">']
short_name = element["name"]
if short_name.startswith('ROOT/'):
short_name = short_name[5:]
# Header
attributes.append(f'<tr><td bgcolor="grey91"><b>{html.escape(short_name)}</b></td></tr>')
# Nets
attributes.append(f'<tr><td bgcolor="darkslategray2"><table border="0" cellborder="1" cellspacing="8">')
if 'nets' in element and element['nets']:
nets = ''.join(f'<tr><td bgcolor="white" cellpadding="4" port="{html.escape(str(i))}">{str(i)}</td></tr>' for i,net in enumerate(element['nets']))
attributes.append(f'{nets}')
else:
attributes.append('<tr><td border="0" cellpadding="0">∅</td></tr>')
attributes.append(f'</table></td></tr>')
# Args
attributes.append(f'<tr><td bgcolor="palegreen"><table border="0" cellborder="1" cellpadding="2" cellspacing="0">')
if 'args' in element and element['args']:
args = ''.join(f'<tr><td bgcolor="white" cellpadding="4">{html.escape(shorten(v["value"]))}</td></tr>' for v in element['args'])
attributes.append(f'{args}')
else:
attributes.append('<tr><td border="0" cellpadding="0">∅</td></tr>')
attributes.append(f'</table></td></tr>')
# Kwargs
attributes.append(f'<tr><td bgcolor="wheat"><table border="0" cellborder="1" cellpadding="2" cellspacing="0">')
if 'kwargs' in element and element['kwargs']:
kwargs = ''.join(f'<tr><td bgcolor="grey91">{html.escape(k)}</td><td bgcolor="white">{html.escape(shorten(v["value"]))}</td></tr>' for k, v in element['kwargs'].items())
attributes.append(f'{kwargs}')
else:
attributes.append('<tr><td border="0" cellpadding="0">∅</td></tr>')
attributes.append(f'</table></td></tr>')
attributes.append('</table>')
return f'"{element["name"]}" [label=<{"".join(attributes)}> shape=none margin="0"]'
def edge(element):
if 'nets' in element:
for i,net in enumerate(element['nets']):
# yield f'"{element["name"]}":"{str(i)}" -- "{net}":"head"'
yield f'"{element["name"]}":"{str(i)}" -> "{net}":"middle"[ arrowhead = none ]'
def generate_graph(description):
result = []
result.append('digraph G {')
# result.append(' fontname="Helvetica,Arial,sans-serif"')
# result.append(' node [fontname="Helvetica,Arial,sans-serif"]')
# result.append(' edge [fontname="Helvetica,Arial,sans-serif"]')
result.append(' fontname="Cascadia,Courrier,mono"')
result.append(' node [fontname="Cascadia,Courrier,mono"]')
result.append(' edge [fontname="Cascadia,Courrier,mono"]')
result.append(' layout="sfdp"')
result.append(' overlap=false')
result.append(' splines=curved')
for name, net in description["nets"].items():
result.append(' ' + edge_label(name, net))
for element in description["elements"]:
result.append(' ' + node_label(element))
result.extend(' ' + e for e in edge(element))
result.append('}')
return '\n'.join(result)
def draw_graph(json_file, out_file):
with open(json_file) as f:
description = json.load(f)
dot_src = generate_graph(description)
# print(dot_src)
graph = graphviz.Source(dot_src)
graph.render(outfile=out_file)
print(f'Results written to {out_file}')
def main():
try:
json_file = sys.argv[1]
except IndexError:
print('First and only argument should be a JSON description of the circuit')
try:
out_file = sys.argv[2]
except IndexError:
out_file = json_file + ".png"
with open(json_file) as f:
description = json.load(f)
dot_src = generate_graph(description)
# print(dot_src)
graph = graphviz.Source(dot_src)
graph.render(outfile=out_file)
print(f'Results written to {out_file}')
if __name__ == '__main__':
main()
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