+ /**
+ * Unconvert the given data from Base64 format back to a raw array of bytes.
+ *
+ * @param data
+ * the data to unconvert
+ * @param zip
+ * TRUE to also uncompress the data from a GZIP format; take care
+ * about this flag, as it could easily cause errors in the
+ * returned content or an {@link IOException}
+ * @param breakLines
+ * TRUE to break lines on every 76th character
+ *
+ * @return the raw data represented by the given Base64 {@link String}
+ *
+ * @throws IOException
+ * in case of I/O errors
+ */
+ public static OutputStream unbase64(OutputStream data, boolean zip,
+ boolean breakLines) throws IOException {
+ OutputStream out = new Base64.OutputStream(data,
+ breakLines ? Base64.DO_BREAK_LINES & Base64.ENCODE
+ : Base64.ENCODE);
+
+ if (zip) {
+ out = new java.util.zip.GZIPOutputStream(out);
+ }
+
+ return out;
+ }
+
+ /**
+ * Unconvert the given data from Base64 format back to a raw array of bytes.
+ *
+ * @param data
+ * the data to unconvert
+ * @param zip
+ * TRUE to also uncompress the data from a GZIP format; take care
+ * about this flag, as it could easily cause errors in the
+ * returned content or an {@link IOException}
+ * @param breakLines
+ * TRUE to break lines on every 76th character
+ *
+ * @return the raw data represented by the given Base64 {@link String}
+ *
+ * @throws IOException
+ * in case of I/O errors
+ */
+ public static InputStream unbase64(InputStream data, boolean zip,
+ boolean breakLines) throws IOException {
+ if (zip) {
+ data = new java.util.zip.GZIPInputStream(data);
+ }
+
+ return new Base64.InputStream(data, breakLines ? Base64.DO_BREAK_LINES
+ & Base64.ENCODE : Base64.ENCODE);
+ }
+