Create Gzip Archive Android kotlin

create gzip

    //this is zip function for new standards, if you don't
    private fun zipFromRaw(rawTextId: Int, resultFileName: String) {
        val inputStream = context.resources.openRawResource(rawTextId)

        val stringBuilder = StringBuilder()
        try {
            val reader = BufferedReader(InputStreamReader(inputStream))
            var line = reader.readLine()
            while (line != null) {
                stringBuilder.append(line)
                line = reader.readLine()
            }
        } catch (e: Throwable) {
            Timber.e(e)
            stringBuilder.clear()
            return
        } finally {
            inputStream.close()
        }


        val file = File(context.filesDir, resultFileName)
        val fileOutputStream = FileOutputStream(file)

        val gzip = GZIPOutputStream(fileOutputStream)
        val sw = OutputStreamWriter(gzip)
        sw.write(stringBuilder.toString())
        sw.close()
        gzip.close()
        fileOutputStream.close()
    }