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#!/usr/bin/env python3
import subprocess
import sys
import shutil
import os
if len(sys.argv) < 2:
print("Must pass a filename argument")
sys.exit(1)
in_filename = sys.argv[1]
out_filename = in_filename.replace(".in.md", ".md")
out_dir = in_filename.replace(".in.md", "")
if in_filename == out_filename:
print("File must end in .in.md")
sys.exit(1)
if os.path.isdir(out_dir):
shutil.rmtree(out_dir)
os.mkdir(out_dir)
file_num = 1
with open(out_filename, "wb") as out_file, open(in_filename, "rb") as in_file:
for line in in_file:
if line.startswith(b"```dot"):
dot_lines = []
while True:
dot_line = next(in_file)
if dot_line == b"```\n":
break
dot_lines.append(dot_line)
dot_input = b"".join(dot_lines)
svg_filename = out_dir + "/" + str(file_num) + ".svg"
svg = subprocess.check_output(['dot', '-Tsvg', '-o', svg_filename], input=dot_input)
out_file.write(b"<div align=center>\n")
out_file.write(b"<img src='%s'/>\n" % (svg_filename.encode('utf-8')))
out_file.write(b"</div>\n")
file_num += 1
else:
out_file.write(line)
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