How to customize the predefined jar task

Help/Discuss
1

I have a sub-project lombok-anno to extends lombok lib, with a user-gen dir $buildDir/lombok, which is used for compile lombok-anno, and added to mainsourceset.output, but not needed (neather run or compile) for another sub-project main-proj who uses lombok-anno.

the default behavior of JavaPlugin’s jar task will add all main.output to xxx.jar ( by call from(output) ).

so i need to customize the jar task, to remove $buildDir/lombok in Jar.source

  1. because the exclude uses path in des_path in jar, not source path in from, so it failes. The file in jar is mixed, hard to exclude.
tasks.named("jar"){
     exclude "$buildDir/lombok"
}
  1. not work, the source added by JavaPlugin’s jar not removed.
tasks.replace("jar", Jar).configure{
      println source.getFiles()
}

How to customize the jar task?

2

Are you wanting to exclude resources or class files?

If resources you’ll want to configure the “processResources” task which is of type “Copy”. Eg

apply plugin: 'java'
processResources {
   exclude 'lombok/**' 
}

If classes I think you’d actually want to delete the class files in a doLast {...} closure in the “compileJava” task. Otherwise your runtimeClasspath will be inconsistent with your jar

Eg:

apply plugin: 'java'
compileJava {
   doLast {
      delete "$destinationDir/lombok" 
   } 
}