Function updateCalendarFile

scripts/releaser/docs.go:280–309

updateCalendarFile reads the releases index.md, updates the calendar table, and writes it back.

(
	repoRoot string,
	newVer version,
	channel string,
)

// updateCalendarFile reads the releases index.md, updates the
// calendar table, and writes it back.
func updateCalendarFile(
	repoRoot string,
	newVer version,
	channel string,
) error {
	path := filepath.Join(repoRoot, releasesFile)
	content, err := os.ReadFile(path)
	if err != nil {
		return xerrors.Errorf("reading %s: %w", releasesFile, err)
	}

	rows, err := parseCalendarTable(string(content))
	if err != nil {
		return xerrors.Errorf("parsing calendar: %w", err)
	}

	rows = updateCalendar(rows, newVer, channel)
	newTable := renderCalendarTable(rows)

	// Replace the content between markers.
	s := string(content)
	startIdx := strings.Index(s, calendarStartMarker)
	endIdx := strings.Index(s, calendarEndMarker)
	updated := s[:startIdx+len(calendarStartMarker)] +
		"\n" + newTable +
		s[endIdx:]

	//nolint:gosec // File permissions match the original.
	return os.WriteFile(path, []byte(updated), 0o644)
}

// updateAutoversionFile reads a markdown file and replaces
// version strings in lines following autoversion pragmas for