import jenkins.model.Jenkins

def jenkins = Jenkins.instance
def xmlDir = new File(jenkins.root, "job-xml")
if (!xmlDir.exists()) {
    return
}

xmlDir.eachFileMatch(~/.*\.xml/) { file ->
    def jobName = file.name.replaceFirst(/\.xml$/, "")
    def existing = jenkins.getItem(jobName)
    if (existing != null) {
        return
    }
    def fis = new FileInputStream(file)
    try {
        jenkins.createProjectFromXML(jobName, fis)
        println "Created job: ${jobName}"
    } finally {
        fis.close()
    }
}

jenkins.save()