231 lines
11 KiB
Python
231 lines
11 KiB
Python
#!/usr/bin/env python3
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"""Keeps the README release summary current and draws the commit calendar.
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python3 scripts/sync_changelog.py
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Rewrites, from CHANGELOG.md and `git log`:
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- the short release summary in README.md and README.en.md, between
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<!-- changelog:start --> and <!-- changelog:end -->;
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- Assets/readme/activity.svg and activity.zh.svg, 26 weeks of commits.
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Run it after every CHANGELOG edit. Standard library only, so it runs on a
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stock Mac and in CI. Adapted from QuotaBar's script of the same name.
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"""
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import argparse
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import datetime
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import math
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import pathlib
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import re
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import subprocess
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from collections import Counter
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ROOT = pathlib.Path(__file__).resolve().parent.parent
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WEEKS = 26
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# ── CHANGELOG.md ──────────────────────────────────────────────────────────
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def parse(text):
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"""Releases, newest first: each with its days, each day with its groups.
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"## 未发布" holds "### YYYY-MM-DD" days; "## 0.1.0 · 2026-09-20" holds its
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groups directly, which count as one day on the release date.
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"""
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releases, release, day, group = [], None, None, None
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for line in text.splitlines():
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heading = re.match(r"^## (.+)$", line)
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dated = re.match(r"^### (\d{4}-\d{2}-\d{2})\s*$", line)
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kind = re.match(r"^#### (.+)$", line)
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if release is not None and release["version"] and kind is None:
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kind = re.match(r"^### (.+)$", line)
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if heading:
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title = heading.group(1).strip()
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version = re.match(r"^v?([\d.]+)\s*·\s*(\d{4}-\d{2}-\d{2})$", title)
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release = {
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"version": version.group(1) if version else None,
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"date": version.group(2) if version else None,
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"days": [],
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}
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releases.append(release)
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day = {"date": release["date"], "groups": []} if version else None
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if day:
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release["days"].append(day)
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group = None
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elif dated and release is not None:
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# A release that kept its dated days: drop the empty day that
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# stood in for the release date.
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if release["days"] and not release["days"][-1]["groups"]:
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release["days"].pop()
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day = {"date": dated.group(1), "groups": []}
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release["days"].append(day)
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group = None
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elif kind and day is not None:
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group = {"kind": kind.group(1).strip(), "items": []}
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day["groups"].append(group)
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elif line.startswith("- ") and group is not None:
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group["items"].append(line[2:].strip())
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elif line.startswith(" ") and line.strip() and group is not None and group["items"]:
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text = line.strip()
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# 缩进的 “- ” 是子条目，保留成嵌套列表；其余是折行，直接接上（中文折行不加空格）
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group["items"][-1] += f"\n - {text[2:].strip()}" if text.startswith("- ") else text
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for release in releases:
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release["days"] = [d for d in release["days"] if any(g["items"] for g in d["groups"])]
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return [r for r in releases if r["days"]]
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def item_count(day):
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return sum(len(g["items"]) for g in day["groups"])
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def latest_release(releases):
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return next((r for r in releases if r["version"]), None)
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def unreleased(releases):
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return next((r for r in releases if not r["version"]), None)
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# ── README ────────────────────────────────────────────────────────────────
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def readme_block(releases, en):
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latest = latest_release(releases)
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pending = unreleased(releases)
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pending_count = sum(item_count(d) for d in pending["days"]) if pending else 0
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lines = ["<!-- changelog:start -->"]
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lines.append("<!-- Generated from CHANGELOG.md by scripts/sync_changelog.py. Do not edit by hand. -->"
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if en else "<!-- 由 scripts/sync_changelog.py 从 CHANGELOG.md 生成，请勿手改。 -->")
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head = []
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if latest:
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head.append(f"Latest release **{latest['version']}** ({latest['date']})" if en
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else f"最新版本 **{latest['version']}**（{latest['date']}）")
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elif en:
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head.append("Not released yet")
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else:
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head.append("尚未发布正式版本")
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if pending_count:
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head.append(f"**{pending_count}** changes in development" if en
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else f"开发中 **{pending_count}** 项改动尚未发布")
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head.append("[full changelog](CHANGELOG.md) (kept in Chinese)" if en else "[完整更新日志](CHANGELOG.md)")
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lines += ["", " · ".join(head), ""]
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lines.append("<!-- changelog:end -->")
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return "\n".join(lines)
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def replace_block(path, block, start="<!-- changelog:start -->", end="<!-- changelog:end -->"):
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text = path.read_text(encoding="utf-8")
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pattern = re.compile(re.escape(start) + r".*?" + re.escape(end), re.S)
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if not pattern.search(text):
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raise SystemExit(f"{path.relative_to(ROOT)}: no {start} … {end} markers")
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updated = pattern.sub(lambda _: block, text, count=1)
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if updated != text:
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path.write_text(updated, encoding="utf-8")
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return True
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return False
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# ── Commit calendar ───────────────────────────────────────────────────────
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def commit_days():
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dates = subprocess.run(
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["git", "log", "--format=%ad", "--date=short"],
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cwd=ROOT, capture_output=True, text=True, check=True).stdout.split()
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return Counter(dates)
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def activity_svg(per_day, today, en):
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cell, gap, left, top = 11, 3, 30, 18
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step = cell + gap
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# Columns are weeks starting Sunday, the last one holding today.
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end = today + datetime.timedelta(days=(5 - today.weekday()) % 7) # the Saturday ending this week
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start = end - datetime.timedelta(days=WEEKS * 7 - 1)
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days = [start + datetime.timedelta(days=i) for i in range(WEEKS * 7)]
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window = {d: per_day.get(d.isoformat(), 0) for d in days if d <= today}
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total = sum(window.values())
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peak = max(window.values(), default=0)
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palette = ["rgba(139,148,158,0.18)", "#9be9a8", "#40c463", "#30a14e", "#216e39"]
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def level(n):
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return 0 if n == 0 or peak == 0 else max(1, min(4, math.ceil(4 * n / peak)))
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width = left + WEEKS * step
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height = top + 7 * step + 40
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font = 'font-family="-apple-system,BlinkMacSystemFont,Segoe UI,Helvetica,Arial,PingFang SC,sans-serif"'
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parts = [f'<svg xmlns="http://www.w3.org/2000/svg" width="{width}" height="{height}" viewBox="0 0 {width} {height}" role="img">']
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title = (f"{total} commits in the last {WEEKS} weeks" if en else f"近 {WEEKS} 周共 {total} 次提交")
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parts.append(f"<title>{title}</title>")
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parts.append(f'<g {font} font-size="9" fill="#8b949e">')
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months_en = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]
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last_month = None
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for w in range(WEEKS):
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first = days[w * 7]
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if first.month != last_month and first.day <= 7:
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label = months_en[first.month - 1] if en else f"{first.month}月"
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parts.append(f'<text x="{left + w * step}" y="{top - 6}">{label}</text>')
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last_month = first.month
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elif last_month is None:
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last_month = first.month
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for row, label in ((1, "Mon" if en else "一"), (3, "Wed" if en else "三"), (5, "Fri" if en else "五")):
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parts.append(f'<text x="0" y="{top + row * step + cell - 2}">{label}</text>')
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parts.append("</g>")
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for i, d in enumerate(days):
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if d > today:
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continue
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n = window[d]
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x, y = left + (i // 7) * step, top + (i % 7) * step
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tip = f"{n} commits on {d.isoformat()}" if en else f"{d.isoformat()}：{n} 次提交"
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parts.append(f'<rect x="{x}" y="{y}" width="{cell}" height="{cell}" rx="2" fill="{palette[level(n)]}"><title>{tip}</title></rect>')
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# The legend under the grid on the right, the caption on its own line
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# below: side by side they collide in English.
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base = top + 7 * step + 14
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caption = (f"{total} commits in the last {WEEKS} weeks · through {today.isoformat()}" if en
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else f"近 {WEEKS} 周共 {total} 次提交 · 截至 {today.isoformat()}")
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parts.append(f'<g {font} font-size="10" fill="#8b949e">')
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parts.append(f'<text x="{left}" y="{base + 16}">{caption}</text>')
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legend_x = width - 5 * step - 34
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parts.append(f'<text x="{legend_x - 4}" y="{base}" text-anchor="end">{"Less" if en else "少"}</text>')
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for k in range(5):
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parts.append(f'<rect x="{legend_x + k * step}" y="{base - cell + 1}" width="{cell}" height="{cell}" rx="2" fill="{palette[k]}"/>')
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parts.append(f'<text x="{legend_x + 5 * step + 2}" y="{base}">{"More" if en else "多"}</text>')
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parts.append("</g></svg>")
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return "\n".join(parts) + "\n"
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def write_if_changed(path, content):
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path.parent.mkdir(parents=True, exist_ok=True)
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if path.exists() and path.read_text(encoding="utf-8") == content:
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return False
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path.write_text(content, encoding="utf-8")
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return True
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def main():
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parser = argparse.ArgumentParser(description="Sync CHANGELOG.md into the READMEs and the activity chart.")
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parser.add_argument("--changelog", default=str(ROOT / "CHANGELOG.md"),
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help="read this file instead, e.g. the committed copy while other edits are pending")
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parser.add_argument("--through-today", action="store_true",
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help="include today's commits in the calendar (default stops at yesterday)")
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args = parser.parse_args()
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releases = parse(pathlib.Path(args.changelog).read_text(encoding="utf-8"))
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changed = []
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if replace_block(ROOT / "README.md", readme_block(releases, en=False)):
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changed.append("README.md")
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if replace_block(ROOT / "README.en.md", readme_block(releases, en=True)):
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changed.append("README.en.md")
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# The calendar runs through yesterday by default: a finished day does not
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# change, so running this again after today's commits leaves the chart
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# alone rather than redrawing it with every commit that records the redraw.
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today = datetime.date.today()
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if not args.through_today:
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today -= datetime.timedelta(days=1)
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per_day = commit_days()
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for name, en in (("activity.svg", True), ("activity.zh.svg", False)):
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if write_if_changed(ROOT / "Assets" / "readme" / name, activity_svg(per_day, today, en)):
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changed.append(f"Assets/readme/{name}")
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print("已更新：" + "、".join(changed) if changed else "已是最新")
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if __name__ == "__main__":
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main()
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