Create new File on build.gradle.kts

Question

I have a project that use Jenkinsfile to do some tasks, one of them is generate build version of project with the version on .jar file name.

Using Java 8 and build.gradle i was doing like this

• Build.gradle

  ext {
      buildVersion = '1.0.0'
  }
  
  task readImageVersion() {
       doLast {
           new File("image.version").text = "Version=${buildVersion}"
       }
  }
  

• Read this file to get version on Jenkinsfile

  script {
       def props = readProperties file: 'image.version'
       def version = props['Version']
  }
  

Now i'm using Java 17 and build.gradle.kts and i can't find a way to do something like this. Can someone help?

I thy to do something like this, but miserable fails

task("readImageVersion") {
     File.createTempFile(version as String, ".txt")
}

Answer 1

The build.gradle.kts equivalent of the build.gradle snippet in the question would be something like below:

extra.apply {
    set("buildVersion", "1.0.0")
}

tasks.register("readImageVersion") {
     doLast {
         file("image.version").appendText("""Version=${project.property("buildVersion")}""")
     }
}