func checkCommitFooter()

in server.go [226:258]

• 26 lines of code
• 7 McCabe index (conditional complexity)

func checkCommitFooter(message, footer string) string {
	if len(footer) == 0 {
		return "required footer should be non-empty"
	}

	blocks := strings.Split(message, "\n\n")
	if len(blocks) < 2 {
		return "gerrit changes must have two paragraphs."
	}

	footerBlock := blocks[len(blocks)-1]
	lines := strings.Split(footerBlock, "\n")
	for _, l := range lines {
		fields := strings.SplitN(l, ":", 2)
		if len(fields) < 2 {
			continue
		}

		if fields[0] != footer {
			continue
		}

		value := fields[1]
		if !strings.HasPrefix(value, " ") {
			return fmt.Sprintf("footer %q should have space after ':'", fields[1])
		}

		// length limit?
		return ""
	}

	return fmt.Sprintf("footer %q not found", footer)
}