Work in Progress (Not finished) : Kotlin Script to take an AAR file and then strip a list of Classes out of it.

gistfile1.txt

fun runCmd(
  cwd: File,
  cmd: String
) = runCatching {
  println("In cwd ${cwd.path}, Running cmd $cmd")
  ProcessBuilder("\\s".toRegex().split(cmd))
    .directory(cwd)
    .redirectOutput(ProcessBuilder.Redirect.PIPE)
    .redirectError(ProcessBuilder.Redirect.PIPE)
    .start()
    .inputStream.bufferedReader().readText()
}.onFailure { it.printStackTrace() }.getOrNull()

fun main() {
  val testDir = File("/Users/samedwards/Downloads/jarcompare/test")
  val origAarFile = File(testDir, "lib.aar")
  val repackagedAarFile = File(testDir, "repackaged.aar")
  val aarUnzippedDir = File(testDir, "aar")
  val classesUnzippedDir = File(testDir, "classes")
  val classesJarFile = File(aarUnzippedDir, "classes.jar")
  val intersectionsFile = File(testDir, "intersection.txt")

  listOf(
    classesUnzippedDir,
    aarUnzippedDir,
    repackagedAarFile
  ).forEach {
    if (it.exists()) {
      if (it.isDirectory) {
        it.deleteRecursively()
      } else {
        it.delete()
      }
    }
  }

  runCmd(testDir, "unzip ${origAarFile.canonicalPath} -d ${aarUnzippedDir.name}")

  runCmd(testDir, "unzip ${classesJarFile.canonicalPath} -d ${classesUnzippedDir.name}")

  val exclusions = intersectionsFile.readText().lines().filter { it.isNotBlank() }.map {
    it.replace(".//", "")
  }

  exclusions.forEach { str ->
    val classFileToExclude = File(classesUnzippedDir, str)
    println("Deleting Class File ${classFileToExclude.path}")
    classFileToExclude.delete()
  }

  // Delete the empty directories
  classesUnzippedDir.walkBottomUp().forEach {
    if (it.exists() && it.isDirectory && it.listFiles().isEmpty()) {
      it.deleteRecursively()
    }
  }

  classesJarFile.delete()
  runCmd(
    classesUnzippedDir,
    "zip -vr ../${aarUnzippedDir.name}/${classesJarFile.name} ./ -x \"*.DS_Store\""
  )

  runCmd(aarUnzippedDir, "zip -vr ../${repackagedAarFile.name} ./ -x \"*.DS_Store\"")
}

intersection.txt

.//com/something/RealLauncher_Factory.class