39 lines
1.1 KiB
Python
39 lines
1.1 KiB
Python
#!/usr/bin/env python3
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"""Prints the CHANGELOG.md section of one version (used as the release text).
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changelog_section.py 0.2.1 [CHANGELOG.md]
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A section starts at a "## <version>" heading (anything may follow the version, e.g. " – changes
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since 0.1.0") and ends before the next "## " heading. Exit code 1 if the version has no section.
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"""
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import re
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import sys
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def section(text, version):
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out, inside = [], False
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for line in text.splitlines():
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if line.startswith("## "):
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if inside:
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break
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inside = re.match(r"## v?" + re.escape(version) + r"(\s|$)", line) is not None
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continue
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if inside:
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out.append(line)
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return "\n".join(out).strip() if inside or out else None
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def main():
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if len(sys.argv) < 2:
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sys.exit(__doc__)
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path = sys.argv[2] if len(sys.argv) > 2 else "CHANGELOG.md"
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with open(path, encoding="utf-8") as f:
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s = section(f.read(), sys.argv[1])
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if not s:
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sys.exit("no section for version %s in %s" % (sys.argv[1], path))
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print(s)
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if __name__ == "__main__":
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main()
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