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#!/usr/bin/env python3
#
# Copyright 2017 Lars Wirzenius
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import sys
import tempfile
import cliapp
def parse_markdown(f, tmpdir):
lines = f.readlines()
result = []
uml_filenames = []
while lines:
prefix, uml, lines = extract_uml(lines)
result.extend(prefix)
if uml:
filename = create_uml_file(tmpdir, uml)
uml_filenames.append(filename)
result.extend(include(uml, filename))
return result, uml_filenames
def extract_uml(lines):
start = find_line(lines, '@startuml\n')
if start is None:
return lines, None, []
end = find_line(lines, '@enduml\n')
if end is None:
return lines, None, []
return lines[:start], lines[start:end+1], lines[end+1:]
def find_line(lines, pattern):
for i, line in enumerate(lines):
if line.startswith(pattern):
return i
return None
def create_uml_file(tmpdir, lines):
text = ''.join(lines)
fd, filename = tempfile.mkstemp(dir=tmpdir)
os.write(fd, text.encode())
os.close(fd)
return filename
def include(uml, filename):
title = get_title(uml)
return [
'\\ \n'.format(title, filename),
'\n',
]
def get_title(uml):
i = find_line(uml, 'title ')
if i is not None:
return uml[i].split(' ', 1)[1]
def plantuml(filename):
cliapp.runcmd(['plantuml', '-tpng', '-output', '.', filename])
def main():
tmpdir = sys.argv[1]
lines, filenames = parse_markdown(sys.stdin, tmpdir)
sys.stdout.write(''.join(lines))
for filename in filenames:
plantuml(filename)
if __name__ == '__main__':
main()
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