org.gfccollective.util.ZipUtils.scala Maven / Gradle / Ivy
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package org.gfccollective.util
import java.io._
import java.util.zip.{GZIPInputStream, GZIPOutputStream}
/** Util to zip/unzip an object/binary blob in/to a binary blob/object.
*
* Actual impl of the compression is plain GZIP classes from the Java JDK.
*/
object ZipUtils {
/** Compress a generic object.
*
* @param stuff the object to be compressed (of type T).
* @return an array of bytes with the compressed binary blob.
*/
def zip[T](stuff: T): Array[Byte] = {
val bos = new ByteArrayOutputStream
val ozbos = new ObjectOutputStream(new GZIPOutputStream(bos))
try {
ozbos.writeObject(stuff)
} finally {
ozbos.close
}
bos.toByteArray
}
/** Uncompress a given array of bytes.
*
* @param bytes the array of bytes containing the zipped blob.
* @return an instance of the T type.
*/
def unzip[T](bytes: Array[Byte]): T = {
val bis = new ByteArrayInputStream(bytes)
val zbis = new GZIPInputStream(bis)
val ozbis = new ObjectInputStream(zbis)
try {
ozbis.readObject.asInstanceOf[T]
} finally {
ozbis.close
}
}
}