DataUri

/**
 * Copyright © 2016, QIAGEN Aarhus A/S. All rights reserved.
 */
package com.qiagen.sky.executor.dummy;

import javax.xml.bind.DatatypeConverter;

/**
 * FIXME
 */
public class DataUri {
    private static final String BASE64 = ";base64,";
    private static final String PRE_DATA = "data:";
    
    public String toUri(String contentType, byte[] data) {
        String imageString = PRE_DATA + contentType + BASE64 +
                DatatypeConverter.printBase64Binary(data);
        return imageString;
    }
    
    public static byte[] dataFromDataUri(String dataUri) {
        assert dataUri.startsWith(PRE_DATA);
        int indexOf = dataUri.indexOf(BASE64);
        assert indexOf >= PRE_DATA.length();
        String base64 = dataUri.substring(indexOf + BASE64.length());
        return DatatypeConverter.parseBase64Binary(base64);
    }
}