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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.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * .
 *
 */
package com.aliyun.apache.hc.client5.http.entity.mime;

import java.io.IOException;
import java.io.OutputStream;

import com.aliyun.apache.hc.core5.http.ContentType;
import com.aliyun.apache.hc.core5.util.Args;

/**
 * Binary body part backed by a byte array.
 *
 * @see MultipartEntityBuilder
 *
 * @since 4.1
 */
public class ByteArrayBody extends AbstractContentBody {

    /**
     * The contents of the file contained in this part.
     */
    private final byte[] data;

    /**
     * The name of the file contained in this part.
     */
    private final String filename;

    /**
     * @since 4.3
     */
    public ByteArrayBody(final byte[] data, final ContentType contentType, final String filename) {
        super(contentType);
        this.data = Args.notNull(data, "data");
        this.filename = filename;
    }

    /**
     * Public constructor that creates a new ByteArrayBody.
     *
     * @param contentType the {@link ContentType}
     * @param data the array of byte.
     *
     * @since 5.2
     */
    public ByteArrayBody(final byte[] data, final ContentType contentType) {
        this(data, contentType, null);
    }

    /**
     * Creates a new ByteArrayBody.
     *
     * @param data The contents of the file contained in this part.
     * @param filename The name of the file contained in this part.
     */
    public ByteArrayBody(final byte[] data, final String filename) {
        this(data, ContentType.APPLICATION_OCTET_STREAM, filename);
    }

    @Override
    public String getFilename() {
        return filename;
    }

    @Override
    public void writeTo(final OutputStream out) throws IOException {
        out.write(data);
    }

    @Override
    public String getCharset() {
        return null;
    }

    @Override
    public long getContentLength() {
        return data.length;
    }

}