def checkGeckoDriver()

in src/main/script/prerequisiteCheckFramework.groovy [50:97]
45 lines of code
10 McCabe index (conditional complexity)

def checkGeckoDriver() {
    print "Checking Gecko WebDriver configuration:  "
    String webdriverGeckoDriverPath = geckoProperty
    if(webdriverGeckoDriverPath == null || webdriverGeckoDriverPath.isEmpty()) {
        println "Failed"
        println ""
        println "When running the 'with-ui-testsuite' profile it is mandatory to pass along the path to the Gecko Webdriver in the 'webdriver.gecko.driver' variable."
        println "Get versions from: https://github.com/mozilla/geckodriver/releases"
        if(os == "win") {
            println "Pass the location to the 'geckodriver.exe' executable by adding '-Dwebdriver.gecko.driver={path-to-geckodriver.exe}' to your maven build command"
        } else {
            println "Pass the location to the 'geckodriver' executable by adding '-Dwebdriver.gecko.driver={path-to-geckodriver}' to your maven build command"
        }
        println ""
        allConditionsMet = false
        return
    }
    // If the property is specified with surrounding double-quotes, remove them.
    if(webdriverGeckoDriverPath.startsWith("\"") && webdriverGeckoDriverPath.endsWith("\"")) {
        flashplayerDebuggerPath = webdriverGeckoDriverPath.substring(1, webdriverGeckoDriverPath.length() - 1)
    }

    File webdriverGeckoDriverFile = new File(webdriverGeckoDriverPath)
    if(webdriverGeckoDriverFile.exists()) {
        if(webdriverGeckoDriverFile.exists()) {
            if(!webdriverGeckoDriverFile.isFile()) {
                println "Failed: 'webdriver.gecko.driver' must point to a file"
                allConditionsMet = false
                return
            }

            def output = (webdriverGeckoDriverPath + " --version").execute().text
            Matcher matcher = extractVersion(output)
            if(matcher.size() > 0) {
                def curVersion = matcher[0][1]
                println "OK (Gecko Version " + curVersion + ")"
            } else {
                println "Failed"
                println ""
                println "not a valid Gecko WebDriver executable at " + webdriverGeckoDriverPath
                allConditionsMet = false
            }
        } else {
            println "Failed: File referenced by 'webdriver.gecko.driver' does not exist. " + webdriverGeckoDriverPath
            allConditionsMet = false
        }
    }
}