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Groovy fileToMd5

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Groovy fileToMd5

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  1. def fileToMd5(File aFile) {
  2.    def digest = java.security.MessageDigest.getInstance("MD5");
  3.    aFile.withInputStream{ inpStream ->
  4.        byte[] buffer = new byte[8192];
  5.        int read      = 0;
  6.        while( (read=inpStream.read(buffer)) > 0 ) {
  7.            digest.update(buffer, 0, read);
  8.        }
  9.    }
  10.    byte[] md5sumByteArray = digest.digest();
  11.    def    bigInt          = new BigInteger(1, md5sumByteArray);
  12.    return bigInt.toString(16).padLeft(32, '0');
  13. }

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