int computeVersionCode() {
    def (major, minor, patch) = project.versionStr.replaceAll('-', '').tokenize(".")
    def candidate = "99"
    if (patch.endsWith("snapshot")) {
        candidate = "0"
        patch = patch.replaceAll("[^0-9]", "")
    } else {
        if (project.versionStr.contains("rc")) {
            def rc
            (patch, rc) = patch.tokenize("rc")
            if (rc) {
                candidate = rc
            }
        }
    }

    (major, minor, patch, candidate) = [major, minor, patch, candidate].collect { it.toInteger() }

    (major * 1000000) + (minor * 10000) + (patch * 100) + candidate
}