| #!/usr/bin/env python |
| |
| # This script extracts the VPlan digraphs from the vectoriser debug messages |
| # and saves them in individual dot files (one for each plan). Optionally, and |
| # providing 'dot' is installed, it can also render the dot into a PNG file. |
| |
| from __future__ import print_function |
| |
| import sys |
| import re |
| import argparse |
| import shutil |
| import subprocess |
| |
| parser = argparse.ArgumentParser() |
| parser.add_argument('--png', action='store_true') |
| args = parser.parse_args() |
| |
| dot = shutil.which('dot') |
| if args.png and not dot: |
| raise RuntimeError("Can't export to PNG without 'dot' in the system") |
| |
| pattern = re.compile(r"(digraph VPlan {.*?\n})",re.DOTALL) |
| matches = re.findall(pattern, sys.stdin.read()) |
| |
| for vplan in matches: |
| m = re.search("graph \[.+(VF=.+,UF.+)", vplan) |
| if not m: |
| raise ValueError("Can't get the right VPlan name") |
| name = re.sub('[^a-zA-Z0-9]', '', m.group(1)) |
| |
| if args.png: |
| filename = 'VPlan' + name + '.png' |
| print("Exporting " + name + " to PNG via dot: " + filename) |
| p = subprocess.Popen([dot, '-Tpng', '-o', filename], |
| encoding='utf-8', |
| stdin=subprocess.PIPE, |
| stdout=subprocess.PIPE, |
| stderr=subprocess.PIPE) |
| out, err = p.communicate(input=vplan) |
| if err: |
| raise RuntimeError("Error running dot: " + err) |
| |
| else: |
| filename = 'VPlan' + name + '.dot' |
| print("Exporting " + name + " to DOT: " + filename) |
| with open(filename, 'w') as out: |
| out.write(vplan) |