Files
carbon-lang/proposals/scripts/update_proposal_list.py
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59 lines
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Python
Executable File

#!/usr/bin/env python3
"""Updates the list of proposals in proposals/README.md."""
__copyright__ = """
Part of the Carbon Language project, under the Apache License v2.0 with LLVM
Exceptions. See /LICENSE for license information.
SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
"""
import io
import os
import importlib.util
import re
import sys
# Do some extra work to support direct runs.
try:
from carbon.proposals.scripts import proposals
except ImportError:
proposals_spec = importlib.util.spec_from_file_location(
"proposals", os.path.join(os.path.dirname(__file__), "proposals.py")
)
proposals = importlib.util.module_from_spec(proposals_spec)
proposals_spec.loader.exec_module(proposals)
if __name__ == "__main__":
proposals_path = proposals.get_path()
with io.StringIO() as out:
out.write("<!-- Generated by ./scripts/update_proposal_list.py -->\n\n")
results = out.getvalue()
for title, filename in proposals.get_list(proposals_path):
indent = ""
if filename.endswith("decision.md"):
indent = " "
out.write("%s- [%s](%s)\n" % (indent, title, filename))
toc = out.getvalue()
# Replace the README content if needed.
readme_path = os.path.join(proposals_path, "README.md")
with open(readme_path) as f:
old_content = f.read()
proposals_re = re.compile(
r"(.*<!-- proposals -->)(?:.*)(<!-- endproposals -->)",
re.DOTALL | re.MULTILINE,
)
if not proposals_re.match(old_content):
print(
"ERROR: proposals/README.md is missing the <!-- proposals --> ... "
"<!-- endproposals --> marker."
)
sys.exit(1)
new_content = proposals_re.sub(r"\1\n%s\n\2" % toc, old_content)
if old_content != new_content:
print("Updating proposals/README.md")
with open(readme_path, "w") as f:
f.write(new_content)