el.closest('pre') returns null after marp's polyfill replaces
<pre is="marp-pre"> with <marp-pre> on browsers without customized
built-in element support. el.parentElement works in both cases.
startOnLoad:true does not trigger in a deferred type="module" script
because DOMContentLoaded has already fired. Explicit mermaid.run()
ensures diagrams render regardless of timing.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
93 lines
2.8 KiB
Bash
Executable file
93 lines
2.8 KiB
Bash
Executable file
#!/usr/bin/env bash
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set -euo pipefail
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REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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OUTPUT_DIR="$REPO_ROOT/slides"
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# Find all markdown files with marp: true frontmatter
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SLIDES=()
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while IFS= read -r f; do
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SLIDES+=("$f")
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done < <(grep -rl "^marp: true" "$REPO_ROOT/docs" --include="*.md" --exclude-dir=superpowers 2>/dev/null || true)
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if [ ${#SLIDES[@]} -eq 0 ]; then
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echo "No marp presentations found in docs/."
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exit 0
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fi
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echo "Found ${#SLIDES[@]} presentation(s):"
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printf ' %s\n' "${SLIDES[@]}"
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# Create temp output directory for Docker
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TEMP_OUTPUT=$(mktemp -d)
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chmod 777 "$TEMP_OUTPUT"
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trap "rm -rf '$TEMP_OUTPUT'" EXIT
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if command -v marp &>/dev/null; then
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marp --html --output "$OUTPUT_DIR/" "${SLIDES[@]}"
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else
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echo "marp not found locally — using Docker (marpteam/marp-cli)..."
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# Process each slide individually in Docker
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for slide in "${SLIDES[@]}"; do
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REL_SLIDE="${slide#${REPO_ROOT}/}"
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BASENAME=$(basename "${slide%.*}")
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docker run --rm \
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-v "$REPO_ROOT":/home/marp/app:ro \
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-v "$TEMP_OUTPUT":/home/marp/output \
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marpteam/marp-cli --html --output "/home/marp/output/${BASENAME}.html" "$REL_SLIDE"
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done
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fi
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# Ensure output directory exists
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mkdir -p "$OUTPUT_DIR"
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# Copy generated HTML files to final output directory
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cp "$TEMP_OUTPUT"/*.html "$OUTPUT_DIR/" 2>/dev/null || true
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# Inject mermaid.js into any HTML that contains mermaid code blocks.
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# Marp emits fenced mermaid blocks as <pre><code class="language-mermaid">.
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# The script finds those elements, replaces them with <div class="mermaid">,
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# then loads and runs mermaid.js from CDN.
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inject_mermaid() {
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local html_file="$1"
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python3 - "$html_file" << 'PYEOF'
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import sys
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path = sys.argv[1]
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snippet = """\
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<script type="module">
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import mermaid from 'https://cdn.jsdelivr.net/npm/mermaid@11/dist/mermaid.esm.min.mjs';
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document.querySelectorAll('code.language-mermaid').forEach(el => {
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const div = document.createElement('div');
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div.className = 'mermaid';
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div.textContent = el.textContent;
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el.parentElement.replaceWith(div);
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});
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mermaid.initialize({ startOnLoad: false, theme: 'dark' });
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await mermaid.run();
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</script>"""
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with open(path, encoding='utf-8') as f:
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content = f.read()
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new_content = content.replace('</body>', snippet + '\n</body>', 1)
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if new_content == content:
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print(f"Warning: </body> not found in {path}", file=sys.stderr)
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sys.exit(1)
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with open(path, 'w', encoding='utf-8') as f:
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f.write(new_content)
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PYEOF
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}
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if command -v python3 &>/dev/null; then
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for html_file in "$OUTPUT_DIR"/*.html; do
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[ -f "$html_file" ] || continue
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if grep -q 'class="language-mermaid"' "$html_file"; then
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inject_mermaid "$html_file"
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echo " Injected mermaid.js into $(basename "$html_file")"
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fi
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done
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else
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echo "Warning: python3 not found — skipping mermaid injection"
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fi
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echo "Done — slides in $OUTPUT_DIR/"
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