Java InputStream Read Bytes readBytes(InputStream in, int bufferSize, boolean forceClose)

Description

read Bytes

License

Apache License

Declaration

public static byte[] readBytes(InputStream in, int bufferSize, boolean forceClose) throws Exception 

Method Source Code

//package com.java2s;
/**//from   w w w  .  ja  va2s.  co m
 * Copyright (C) 2010 Daniel Manzke <daniel.manzke@googlemail.com>
 *
 * 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.
 */

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;

public class Main {
    public static byte[] readBytes(InputStream in, int bufferSize, boolean forceClose) throws Exception {
        ByteArrayOutputStream baos = new ByteArrayOutputStream(bufferSize);

        copyInToOut(in, baos, bufferSize, forceClose);
        return baos.toByteArray();
    }

    public static void copyInToOut(InputStream in, String inputEncoding, OutputStream out, String outputEncoding,
            int bufferSize, boolean forceClose) throws IOException {
        BufferedInputStream bis = new BufferedInputStream(in);
        BufferedOutputStream bos = new BufferedOutputStream(out);

        try {
            byte[] buffer = new byte[bufferSize];
            for (;;) {
                int len = bis.read(buffer);
                if (len < 0)
                    break;
                String b = new String(buffer, 0, len, inputEncoding);
                bos.write(b.getBytes(outputEncoding));
            }
        } finally {
            if (forceClose) {
                try {
                    bis.close();
                } catch (Exception e) {
                    // ignore
                }
                try {
                    bos.flush();
                    bos.close();
                } catch (Exception e) {
                    // ignore
                }
            }
        }
    }

    public static void copyInToOut(InputStream in, OutputStream out, int bufferSize, boolean forceClose)
            throws IOException {
        BufferedInputStream bis = new BufferedInputStream(in);
        BufferedOutputStream bos = new BufferedOutputStream(out);

        try {
            byte[] buffer = new byte[bufferSize];
            for (;;) {
                int len = bis.read(buffer);
                if (len < 0)
                    break;
                bos.write(buffer, 0, len);
            }
        } finally {
            if (forceClose) {
                try {
                    bis.close();
                } catch (Exception e) {
                    // ignore
                }
                try {
                    bos.flush();
                    bos.close();
                } catch (Exception e) {
                    // ignore
                }
            }
        }
    }
}

Related

1. readBytes(InputStream in, byte[] b)
2. readBytes(InputStream in, byte[] buf, int length)
3. readBytes(InputStream in, byte[] buffer)
4. readBytes(InputStream in, byte[] buffer, int maxBytesAtOnce)
5. readBytes(InputStream in, byte[] data, int offset, int length)
6. readBytes(InputStream in, int bytesToRead, byte[] buffer, int bufferOffset)
7. readBytes(InputStream in, int expectedBytes, long timeoutMs)
8. readBytes(InputStream in, int len, boolean isLE)
9. readBytes(InputStream in, int length)