42 lines
1.5 KiB
YAML
42 lines
1.5 KiB
YAML
name: Detect docs-only changes
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description: >
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Outputs docs_only=true when all changed files are under docs/ or are
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markdown (.md/.mdx). Fail-safe: if detection fails, outputs false (run
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everything). Uses git diff — no API calls, no extra permissions needed.
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outputs:
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docs_only:
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description: "'true' if all changes are docs/markdown, 'false' otherwise"
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value: ${{ steps.check.outputs.docs_only }}
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runs:
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using: composite
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steps:
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- name: Detect docs-only changes
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id: check
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shell: bash
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run: |
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if [ "${{ github.event_name }}" = "push" ]; then
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BASE="${{ github.event.before }}"
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else
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# Use the exact base SHA from the event payload — stable regardless
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# of base branch movement (avoids origin/<ref> drift).
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BASE="${{ github.event.pull_request.base.sha }}"
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fi
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# Fail-safe: if we can't diff, assume non-docs (run everything)
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CHANGED=$(git diff --name-only "$BASE" HEAD 2>/dev/null || echo "UNKNOWN")
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if [ "$CHANGED" = "UNKNOWN" ] || [ -z "$CHANGED" ]; then
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echo "docs_only=false" >> "$GITHUB_OUTPUT"
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exit 0
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fi
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# Check if all changed files are docs or markdown
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NON_DOCS=$(echo "$CHANGED" | grep -vE '^docs/|\.md$|\.mdx$' || true)
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if [ -z "$NON_DOCS" ]; then
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echo "docs_only=true" >> "$GITHUB_OUTPUT"
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echo "Docs-only change detected — skipping heavy jobs"
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else
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echo "docs_only=false" >> "$GITHUB_OUTPUT"
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fi
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