wordfreq/scripts/ninja2dot.py
2015-07-17 14:56:18 -04:00

32 lines
935 B
Python

""" This file generates a graph of the dependencies for the ninja build.
"""
import sys
def ninja_to_dot():
def last_component(path):
return path.split('/')[-1]
print("digraph G {")
print('rankdir="LR";')
for line in sys.stdin:
line = line.rstrip()
parts = line.split(' ')
if parts[0] == 'build':
# the output file is the first argument; strip off the colon that
# comes from ninja syntax
outfile = last_component(parts[1][:-1])
operation = parts[2]
infiles = [last_component(part) for part in parts[3:]]
for infile in infiles:
if infile == '|':
# external dependencies start here; let's not graph those
break
print('"%s" -> "%s" [label="%s"]' % (infile, outfile, operation))
print("}")
if __name__ == '__main__':
ninja_to_dot()