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package org.uic.barcode.dynamicFrame.api;
import org.uic.barcode.dynamicFrame.Constants;
import org.uic.barcode.dynamicFrame.v1.DynamicFrameCoderV1;
import org.uic.barcode.dynamicFrame.v2.DynamicFrameCoderV2;
import org.uic.barcode.ticket.EncodingFormatException;
public class DynamicFrameCoder {
/**
* Encode.
*
* Encode the header as ASN.1 PER UNALIGNED byte array
*
* @return the byte[]
* @throws EncodingFormatException
*/
public static byte[] encode(IDynamicFrame frame) throws EncodingFormatException {
if (Constants.DYNAMIC_BARCODE_FORMAT_VERSION_1.equals(frame.getFormat())) {
return DynamicFrameCoderV1.encode(frame);
} else if (Constants.DYNAMIC_BARCODE_FORMAT_VERSION_2.equals(frame.getFormat())) {
return DynamicFrameCoderV2.encode(frame);
}
throw new EncodingFormatException("Frame version not supported for encoding");
}
/**
* Decode.
*
* Decode the header from an ASN.1 PER UNALIGNED encoded byte array
*
* @param bytes the bytes
* @return the dynamic header
* @throws EncodingFormatException
*/
public static IDynamicFrame decode(byte[] bytes) throws EncodingFormatException {
IDynamicFrame frame = new SimpleDynamicFrame();
try {
DynamicFrameCoderV1.decode(frame,bytes);
if (frame.getFormat() != null && frame.getFormat().equals(Constants.DYNAMIC_BARCODE_FORMAT_VERSION_1)) {
return frame;
}
} catch (Throwable e) {
frame = null;
// failed, try next
}
frame = new SimpleDynamicFrame();
try {
DynamicFrameCoderV2.decode(frame,bytes);
if (frame.getFormat() != null && frame.getFormat().equals(Constants.DYNAMIC_BARCODE_FORMAT_VERSION_2)) {
return frame;
}
} catch(Throwable e) {
throw new EncodingFormatException("Dynamic Header Version not supported");
// failed
}
throw new EncodingFormatException("Dynamic Header Version not supported");
}
public static byte[] encodeLevel1(IDynamicFrame frame) throws EncodingFormatException {
if (Constants.DYNAMIC_BARCODE_FORMAT_VERSION_1.equals(frame.getFormat())) {
return DynamicFrameCoderV1.encodeLevel1(frame);
} else if (Constants.DYNAMIC_BARCODE_FORMAT_VERSION_2.equals(frame.getFormat())) {
return DynamicFrameCoderV2.encodeLevel1(frame);
}
throw new EncodingFormatException("Frame version not supported for encoding");
}
public static byte[] encodeLevel2Data(IDynamicFrame frame) throws EncodingFormatException {
if (Constants.DYNAMIC_BARCODE_FORMAT_VERSION_1.equals(frame.getFormat())) {
return DynamicFrameCoderV1.encodeLevel2Data(frame.getLevel2Data());
} else if (Constants.DYNAMIC_BARCODE_FORMAT_VERSION_2.equals(frame.getFormat())) {
return DynamicFrameCoderV2.encodeLevel2Data(frame.getLevel2Data());
}
throw new EncodingFormatException("Dynamic Header Version not supported: " + frame.getFormat());
}
}
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