Extracts zip files recursively to enable deep comparison of zips within zip files.

RecursiveUnzipper.groovy

/**
 * Extracts zip files recursively (zips within zip files too).
 */
class RecursiveUnzipper {

    public static void main(String[] args) {
        if(args != 3){
            println "Usage: TARGET LEFT RIGHT"
        }

        String left = args[1]
        String right = args[2]
        String target = args[0]

        new RecursiveUnzipper().extractZipsForComparison(target, left, right)
    }

    final AntBuilder ant = new AntBuilder()

    void extractZipsForComparison(String target, String left, String right) {
        String targetLeft = "$target/left"
        String targetRight = "$target/right"

        ant.delete dir: target
        ant.mkdir dir: target
        ant.mkdir dir: targetLeft
        ant.mkdir dir: targetRight
        ant.copy file: left, todir: targetLeft
        ant.copy file: right, todir: targetRight

        extractRecursively(targetLeft)
        extractRecursively(targetRight)
    }

    void extractRecursively(String path) {
        File file = new File(path)
        file.eachFileRecurse { currentFile ->
            if(currentFile.isDirectory()) {
                extractRecursively(currentFile.absolutePath)
            } else if(currentFile.absolutePath.endsWith(".zip") || currentFile.absolutePath.endsWith(".jar")){
                String targetPath = currentFile.parent + "/" + currentFile.name + ".dir/"
                ant.mkdir dir: targetPath
                ant.unzip(src: currentFile, dest: targetPath)
                ant.delete(file: currentFile)
                extractRecursively(targetPath)
            }
        }
    }

}