Unable to derive module descriptor during generateModuleInfo

[nemphys]

I am trying to generate module-info for JasperReports (artifact 'net.sf.jasperreports:jasperreports:6.12.2') using the latest version (rc1).

The error is:
Unable to derive module descriptor for /Users/xxxxxx/.gradle/caches/modules-2/files-2.1/org.apache.xmlgraphics/batik-script/1.11/f7284dabc28aaa7407bef45f31dd204e58a35810/batik-script-1.11.jar

[siordache]

Running gradle with the --stacktrace switch, you will see:

...
Caused by: java.lang.module.InvalidModuleDescriptorException: Provider class org.apache.batik.bridge.RhinoInterpreterFactory not in module

batik-script-1.11.jar is broken and the plugin cannot help in this case. You will get the same error when running:

jar -d -f batik-script-1.11.jar

See also this batik issue.

Possible workarounds (not sure if they really work):

• fix batik-script-1.11.jar by removing the org.apache.batik.bridge.RhinoInterpreterFactory entry from META-INF/services/org.apache.batik.script.InterpreterFactory.

• patch batik-bridge-1.11.jar into batik-script

[nemphys]

OK, I just had this secret hope that you might come up with a simple one-liner for this :-)

[siordache]

Nothing close to a one-liner. Just an ugly workaround:

configurations {
    broken
}
dependencies {
    broken 'org.apache.xmlgraphics:batik-script:1.11'
    broken 'xalan:xalan:2.7.2'
}

tasks.addDependenciesModuleInfo.doFirst {
    fixJar('batik-script', 'org.apache.batik.script.InterpreterFactory', 'org.apache.batik.bridge.RhinoInterpreterFactory')
    fixJar('xalan', 'org.apache.xalan.extensions.bsf.BSFManager', 'org.apache.bsf.BSFManager')
    // ... additional calls to fixJar are probably needed
}

def fixJar(String jarPrefix, String service, String brokenImpl) {
    configurations.broken.files.findAll { f ->
        f.name.startsWith jarPrefix
    }.each { brokenJar ->
        def destDir = file("$buildDir/broken")
        delete destDir
        mkdir destDir

        def zt = zipTree(brokenJar)
        def expandedPath = zt.asFileTree.tree.mirror.dir.path
        def files = zt.files.each { f ->
            def pathInJar = (f.path - expandedPath).substring(1)
            def destFilePath = destDir.toPath().resolve(pathInJar)
            mkdir destFilePath.parent
            java.nio.file.Files.copy(f.toPath(), destFilePath)
        }
        def svcFile = destDir.toPath().resolve("META-INF/services/$service").toFile()
        def newText = svcFile.text.replace(brokenImpl, '')
        svcFile.text = newText

        delete brokenJar
        def jarExec = java.util.spi.ToolProvider.findFirst( "jar" ).get()
        def result = jarExec.run(System.out, System.err,
            '-cf', "$brokenJar.path", '-C', destDir.path, '.')
        println "Fixed $brokenJar"
    }

}

[nemphys]

Wow, thanks. I will try it as soon as I find the time and report back!