md 파일 글 배포 날짜, 수정 날짜 자동 기입 기능 추가

Author: 2REBCat

.github/scripts/stamp_dates.py

@@ -0,0 +1,120 @@
+"""Stamp date/lastmod in Hugo front matter for added/modified blog posts.
+
+Reads newline-separated paths from ADDED_FILES and MODIFIED_FILES env vars,
+rewrites only the date/lastmod lines in the front matter (preserving the rest
+verbatim), and signals whether anything changed via the `changed` output.
+"""
+
+import os
+import re
+import sys
+from datetime import datetime, timezone, timedelta
+from pathlib import Path
+
+KST = timezone(timedelta(hours=9))
+INDEX_NAME = "_index.md"
+BLOG_PREFIX = "content/blog/"
+DATE_RE = re.compile(r"^date:\s*.*$", re.MULTILINE)
+LASTMOD_RE = re.compile(r"^lastmod:\s*.*$", re.MULTILINE)
+
+
+def kst_now_iso() -> str:
+    s = datetime.now(KST).strftime("%Y-%m-%dT%H:%M:%S%z")
+    return s[:-2] + ":" + s[-2:]
+
+
+def split_front_matter(text: str) -> tuple[str, str] | None:
+    if not text.startswith("---"):
+        return None
+    rest = text[3:]
+    if rest.startswith("\n"):
+        rest = rest[1:]
+    sep = rest.find("\n---")
+    if sep == -1:
+        return None
+    fm = rest[:sep]
+    body = rest[sep + 4:]
+    return fm, body
+
+
+def replace_or_insert(fm: str, key_re: re.Pattern, key: str, value: str) -> str:
+    line = f"{key}: {value}"
+    if key_re.search(fm):
+        return key_re.sub(line, fm, count=1)
+    if not fm.endswith("\n"):
+        fm += "\n"
+    return fm + line + "\n"
+
+
+def stamp(path: Path, set_date: bool, now: str) -> bool:
+    original = path.read_text(encoding="utf-8")
+    parts = split_front_matter(original)
+    if parts is None:
+        print(f"  SKIP {path}: no front matter", file=sys.stderr)
+        return False
+    fm, body = parts
+
+    new_fm = fm
+    if set_date:
+        new_fm = replace_or_insert(new_fm, DATE_RE, "date", now)
+    new_fm = replace_or_insert(new_fm, LASTMOD_RE, "lastmod", now)
+
+    if new_fm == fm:
+        return False
+
+    new_text = "---\n" + new_fm
+    if not new_text.endswith("\n"):
+        new_text += "\n"
+    new_text += "---" + body
+    path.write_text(new_text, encoding="utf-8")
+    return True
+
+
+def collect(env_name: str) -> list[Path]:
+    raw_lines = [
+        line.strip()
+        for line in os.environ.get(env_name, "").splitlines()
+        if line.strip()
+    ]
+    paths = []
+    for raw in raw_lines:
+        if not raw.startswith(BLOG_PREFIX):
+            continue
+        p = Path(raw)
+        if p.name == INDEX_NAME or p.suffix != ".md" or not p.exists():
+            continue
+        paths.append(p)
+    return paths
+
+
+def write_output(name: str, value: str) -> None:
+    out = os.environ.get("GITHUB_OUTPUT")
+    if not out:
+        return
+    with open(out, "a", encoding="utf-8") as f:
+        f.write(f"{name}={value}\n")
+
+
+def main() -> int:
+    now = kst_now_iso()
+    print(f"Stamping with {now}")
+
+    added = collect("ADDED_FILES")
+    modified = [p for p in collect("MODIFIED_FILES") if p not in added]
+
+    changed = False
+    for p in added:
+        if stamp(p, set_date=True, now=now):
+            print(f"  stamped (new): {p}")
+            changed = True
+    for p in modified:
+        if stamp(p, set_date=False, now=now):
+            print(f"  stamped (modified): {p}")
+            changed = True
+
+    write_output("changed", "true" if changed else "false")
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

.github/workflows/stamp-dates.yml

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+name: Stamp post dates
+
+on:
+  push:
+    branches:
+      - main
+    paths:
+      - 'content/blog/**/*.md'
+
+permissions:
+  contents: write
+
+concurrency:
+  group: stamp-dates
+  cancel-in-progress: false
+
+jobs:
+  stamp:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Determine added/modified blog files
+        id: diff
+        run: |
+          set -euo pipefail
+          BEFORE="${{ github.event.before }}"
+          AFTER="${{ github.sha }}"
+          ZERO="0000000000000000000000000000000000000000"
+
+          if [ -z "$BEFORE" ] || [ "$BEFORE" = "$ZERO" ]; then
+            echo "First push or unknown base; skipping."
+            ADDED=""
+            MODIFIED=""
+          else
+            ADDED=$(git diff --name-only --diff-filter=A "$BEFORE" "$AFTER" -- 'content/blog/**/*.md' || true)
+            MODIFIED=$(git diff --name-only --diff-filter=M "$BEFORE" "$AFTER" -- 'content/blog/**/*.md' || true)
+          fi
+
+          {
+            echo "added<<__EOF__"
+            echo "$ADDED"
+            echo "__EOF__"
+            echo "modified<<__EOF__"
+            echo "$MODIFIED"
+            echo "__EOF__"
+          } >> "$GITHUB_OUTPUT"
+
+          echo "Added:"
+          echo "$ADDED"
+          echo "Modified:"
+          echo "$MODIFIED"
+
+      - name: Set up Python
+        if: steps.diff.outputs.added != '' || steps.diff.outputs.modified != ''
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.12'
+
+      - name: Stamp dates
+        id: stamp
+        if: steps.diff.outputs.added != '' || steps.diff.outputs.modified != ''
+        env:
+          ADDED_FILES: ${{ steps.diff.outputs.added }}
+          MODIFIED_FILES: ${{ steps.diff.outputs.modified }}
+        run: python .github/scripts/stamp_dates.py
+
+      - name: Commit and push
+        if: steps.stamp.outputs.changed == 'true'
+        run: |
+          set -euo pipefail
+          git config user.name "github-actions[bot]"
+          git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
+          git add content/blog
+          if git diff --cached --quiet; then
+            echo "No staged changes after stamping."
+            exit 0
+          fi
+          git commit -m "chore: stamp post dates [skip ci]"
+          git push origin HEAD:main