ext.getVersionCodeFromTags = { ->
    try {
        def code = new ByteArrayOutputStream()
        exec {
            commandLine 'git', 'tag', '--list'
            standardOutput = code
        }
        return 35 + code.toString().split("\n").size()
    }
    catch (ignored) {
        return -1
    }
}

ext.getVersionNameFromTags = { ->
    try {
        def stdout = new ByteArrayOutputStream()
        exec {
            commandLine 'git', 'describe', '--tags', '--abbrev=0'
            standardOutput = stdout
        }
        return stdout.toString().trim().split("%")[0]
    }
    catch (ignored) {
        return null
    }
}