Re: [gradle-user] Java build, with a custom jar task for obfuscating class files (optionally)

[Sean Van Buggenum]

Hi Rene,

thanks again. That 'overwrite' flag did the trick..
So I went with option 1. I had already kind'a done it... albeit in a very
ugly way (a doFirst task component copying and deleting class files).
By being able to overwrite the main jar task, I avoid all that nasty stuff.
Thanks. I didn't know about it.
And to be honest, I still struggle navigating the documentation.

So now my build file looks like this (see below):

Though, I wonder now if strictly mu from clause in the dist task is wrong,
where I write:

from configurations.compile

it was originally : from configurations.runtime

but I wanted to avoid including the zelix library in the distribution (in
the most easy way). While that worked for the single project, as soon as I
turned this into a multi-project build,
it seemed to be included once more, making it necessary for me to explicitly
exclude it.

Additionally, in order for the Zelix obfuscator to work, I include the
library in the dependencies, as a runtime dependency..

runtime files('/mnt/data/dev/zelix/ZKM5.2.4e.jar')

Again, it works, but, as I am kind of guessing my way through this, I wonder
if strictly it is correct, or best.

Anyway, thanks again very much for your help.
-------------

apply plugin: 'java'

// http://www.gradle.org/java_plugin.html
// http://www.gradle.org/multi_project_builds.html

sourceSets {  // http://www.gradle.org/java_plugin.html  (changing the
project layout)
    main {
        java {
            srcDir 'src'
        }
        resources {
            srcDir 'src'
        }
    }

    test {
        java {
            srcDir 'test'
        }
        resources {
            srcDir 'test'
        }
    }
}

task obfuscate(dependsOn: classes) << {
 javaexec { // as per
http://mrhaki.blogspot.com/2010/09/gradle-goodness-run-java-application.html
    main = 'ZKM'
    classpath = sourceSets.main.runtimeClasspath
    args "$projectDir/script.txt"
    jvmArgs "-DSaveAllDir=$buildDir/obfuscated-classes-extra"
 }
}

task jar(dependsOn: obfuscate, type: Jar, overwrite: true){ // we provide
our own main jar task
    manifest.from("src/META-INF/MANIFEST.MF") // because our main jar should
be obfuscated
    from project.sourceSets.main.resources
    from "$buildDir/obfuscated-classes-extra"
}

task unobfuscatedJar(dependsOn: classes, type: Jar) { // we also provide an
extra jar task, to provide our unobfuscated jar
       baseName = "${project.name}-unobfuscated"
       manifest.from("src/META-INF/MANIFEST.MF")
       from "$buildDir/classes/main"
}

task dist(type: Zip) { // as per
http://www.gradle.org/tutorial_java_projects.html
    dependsOn jar
    into('libs') {
        from jar.archivePath
        from configurations.compile
exclude '*ZKM*.jar', '*junit*.jar'
    }
}

dependencies {
compile project(':path/SimpleSharedProject')
compile files('../depends/junit.jar')
 compile files('../depends/shared.jar')
runtime files('/mnt/data/dev/zelix/ZKM5.2.4e.jar')
}