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# Generate a change record for inclusion in an astron-texmf style LaTeX
# document.
# Assumes that all the relevant versions in the document have tags which match
# \d+\.\d+.
import subprocess
from dataclasses import dataclass
from datetime import datetime
from io import StringIO
from re import match
@dataclass
class Tag(object):
"""Represent a git tag"""
name: str
message: str
@property
def rev(self):
return subprocess.check_output(["git", "rev-parse", self.name]).decode().strip()
@property
def date(self):
for line in (
subprocess.check_output(["git", "cat-file", "-p", self.rev])
.decode()
.strip()
.split("\n")
):
if line.startswith("tagger"):
return datetime.fromtimestamp(int(line.split()[-2]))
def escape_latex(text):
return text.strip().replace("#", r"\#").replace("&", r"\&")
def get_all_tags():
return [
Tag(*tag.split(None, 1))
for tag in subprocess.check_output(["git", "tag", "-n99", "--merged"])
.decode()
.strip()
.split("\n")
]
def generate_change_record(tags):
output = StringIO()
output.write("\setDocChangeRecord{\n")
for tag in sorted(tags, key=lambda x: x.name, reverse=True):
if match(r"\d+\.\d+", tag.name):
output.write(f" \\addChangeRecord{{{escape_latex(tag.name)}}}")
output.write(f"{{{tag.date.strftime('%Y-%m-%d')}}}")
output.write(f"{{{escape_latex(tag.message)}}}\n")
output.write("}")
return output.getvalue()
if __name__ == "__main__":
print(generate_change_record(get_all_tags()))