com.epam.deltix.util.codec.Base64EncoderEx Maven / Gradle / Ivy

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Timebase Common utilities and collections
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/*
 * Copyright 2021 EPAM Systems, Inc
 *
 * See the NOTICE file distributed with this work for additional information
 * regarding copyright ownership. Licensed under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package com.epam.deltix.util.codec;

import com.epam.deltix.util.codec.Base64Encoder;
import com.epam.deltix.util.codec.Base64Decoder;

import java.io.StringWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.ByteArrayOutputStream;

/**
 */
public class Base64EncoderEx {
    public static final String            CHARSET    = "UTF-8";

    public static String encode(byte[] bytes) throws IOException {
        StringWriter stringWriter = new StringWriter();
        Base64Encoder encoder = new Base64Encoder(stringWriter);
        encoder.write(bytes);
        encoder.close();
        return stringWriter.getBuffer().toString();
    }

    public static void encode(byte[] bytes, OutputStream outputStream) throws IOException {
        StringWriter stringWriter = new StringWriter();
        Base64Encoder encoder = new Base64Encoder(stringWriter);
        encoder.write(bytes);
        encoder.close();
        outputStream.write(stringWriter.getBuffer().toString().getBytes(CHARSET));
    }

    public static void main(String[] args) throws Exception {

        byte[] bytesIn = new byte[7];

        for (int idx = 0; idx < "Tester".getBytes().length; idx++)
            bytesIn[idx] = (byte) "Tester".charAt(idx);
        bytesIn[6] = -14;

        StringWriter stringWriter = new StringWriter();
        Base64Encoder encoder = new Base64Encoder(stringWriter);
        encoder.write(bytesIn);
        encoder.close();

        String base64String = stringWriter.getBuffer().toString();

        System.out.println(base64String);

        ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
        Base64Decoder decoder = new Base64Decoder(outputStream);
        decoder.write(base64String);
        decoder.close();
        byte[] bytesOut = outputStream.toByteArray();

        System.out.printf("In array length is: %d, Out array length is: %d\n",
                bytesIn.length,
                bytesOut.length);
    }
}