Function updateRancherFile

scripts/releaser/docs.go:369–395

updateRancherFile updates the version strings in rancher.md.

(path, channel, newVer string)

// updateRancherFile updates the version strings in rancher.md.
func updateRancherFile(path, channel, newVer string) error {
	content, err := os.ReadFile(path)
	if err != nil {
		return xerrors.Errorf("reading %s: %w", path, err)
	}

	s := string(content)

	switch channel {
	case "mainline":
		// Match: - **Mainline**: `X.Y.Z`
		re := regexp.MustCompile(
			`(\*\*Mainline\*\*: ` + "`)" + `\d+\.\d+\.\d+` + "(`)",
		)
		s = re.ReplaceAllString(s, "${1}"+newVer+"${2}")
	case "stable":
		re := regexp.MustCompile(
			`(\*\*Stable\*\*: ` + "`)" + `\d+\.\d+\.\d+` + "(`)",
		)
		s = re.ReplaceAllString(s, "${1}"+newVer+"${2}")
	default:
		return nil
	}

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

// updateReleaseDocs updates all release-related docs files and
// creates a PR with the changes.