44 lines
1.6 KiB
Bash
44 lines
1.6 KiB
Bash
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#!/usr/bin/env bash
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set -euo pipefail
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# changelog-section.sh <version> [changelog-file]
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#
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# Print the body of CHANGELOG.md's `## <version>` section — everything
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# between that heading and the next `## ` heading (or EOF), with the
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# leading/trailing blank lines trimmed. release.yml uses this as the
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# GitHub release body, so the notes are the curated prose we actually
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# wrote, never an auto-generated PR list (cast#96 / box#83).
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#
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# Fails loudly when the section is missing or empty: a release with no
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# written history is a release that skipped the changelog discipline,
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# and the tag push is exactly the moment to catch that — before a
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# release object exists.
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version="${1:-}"
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file="${2:-CHANGELOG.md}"
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[ -n "$version" ] || { echo "usage: changelog-section.sh <version> [changelog-file]" >&2; exit 2; }
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[ -f "$file" ] || { echo "changelog-section: no such file: $file" >&2; exit 1; }
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# The heading is `## <version>` optionally followed by more (a date stamp:
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# `## 0.1.0 — 2026-07-18`). Match on the version as the second word so the
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# stamp's format never becomes load-bearing here.
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section="$(awk -v ver="$version" '
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/^## / { if (found) exit; if ($2 == ver) { found = 1; next } }
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found { print }
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END { exit found ? 0 : 3 }
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' "$file")" || {
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echo "changelog-section: no \"## $version\" section in $file" >&2
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exit 1
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}
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# Trim leading blank lines; command substitution already ate the trailing ones.
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section="$(printf '%s\n' "$section" | sed '/./,$!d')"
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[ -n "$section" ] || {
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echo "changelog-section: the \"## $version\" section in $file is empty" >&2
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exit 1
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}
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printf '%s\n' "$section"
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