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The Apache Commons Codec component contains encoders and decoders for various formats such as Base16, Base32, Base64, digest, and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities. This is a port for GWT, which enables program, to use Apache Commons Codec also in the frontend compiled by the gwt compiler to java-script.

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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 org.apache.commons.codec.binary;

import org.apache.commons.codec.CodecPolicy;
import org.gwtproject.core.shared.GwtIncompatible;

import java.io.InputStream;

/**
 * Provides Base16 encoding and decoding in a streaming fashion (unlimited size).
 * 
 * The default behavior of the Base16InputStream is to DECODE, whereas the default behavior of the
 * {@link Base16OutputStream} is to ENCODE, but this behavior can be overridden by using a different constructor.
 * 
 *
 * @since 1.15
 */
@GwtIncompatible("incompatible class")
public class Base16InputStream extends BaseNCodecInputStream {

    /**
     * Creates a Base16InputStream such that all data read is Base16-decoded from the original provided InputStream.
     *
     * @param in InputStream to wrap.
     */
    public Base16InputStream(final InputStream in) {
        this(in, false);
    }

    /**
     * Creates a Base16InputStream such that all data read is either Base16-encoded or Base16-decoded from the original
     * provided InputStream.
     *
     * @param in InputStream to wrap.
     * @param doEncode true if we should encode all data read from us, false if we should decode.
     */
    public Base16InputStream(final InputStream in, final boolean doEncode) {
        this(in, doEncode, false);
    }

    /**
     * Creates a Base16InputStream such that all data read is either Base16-encoded or Base16-decoded from the original
     * provided InputStream.
     *
     * @param in InputStream to wrap.
     * @param doEncode true if we should encode all data read from us, false if we should decode.
     * @param lowerCase if {@code true} then use a lower-case Base16 alphabet.
     */
    public Base16InputStream(final InputStream in, final boolean doEncode,
            final boolean lowerCase) {
        this(in, doEncode, lowerCase, CodecPolicy.LENIENT);
    }

    /**
     * Creates a Base16InputStream such that all data read is either Base16-encoded or Base16-decoded from the original
     * provided InputStream.
     *
     * @param in InputStream to wrap.
     * @param doEncode true if we should encode all data read from us, false if we should decode.
     * @param lowerCase if {@code true} then use a lower-case Base16 alphabet.
     * @param decodingPolicy Decoding policy.
     */
    public Base16InputStream(final InputStream in, final boolean doEncode,
            final boolean lowerCase, final CodecPolicy decodingPolicy) {
        super(in, new Base16(lowerCase, decodingPolicy), doEncode);
    }
}