Java InputStream Read All readAll(InputStream is)

Description

read All

License

Apache License

Declaration

public static byte[] readAll(InputStream is) throws Exception 

Method Source Code

//package com.java2s;
/*/*w w w . j av  a  2  s. c  om*/
 * Copyright 2014 Ruediger Moeller.
 *
 * 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.*;

import java.util.Arrays;

public class Main {
    public static byte[] readAll(InputStream is) throws Exception {
        int pos = 0;
        byte[] buffer = new byte[1024];
        while (true) {
            int toRead;
            if (pos >= buffer.length) {
                toRead = buffer.length * 2;
                if (buffer.length < pos + toRead) {
                    buffer = Arrays.copyOf(buffer, pos + toRead);
                }
            } else {
                toRead = buffer.length - pos;
            }
            int byt = is.read(buffer, pos, toRead);
            if (byt < 0) {
                if (pos != buffer.length) {
                    buffer = Arrays.copyOf(buffer, pos);
                }
                break;
            }
            pos += byt;
        }
        return buffer;
    }
}

Related

1. readAll(InputStream in)
2. readAll(InputStream in)
3. readAll(InputStream in, byte[] buffer, int off, int len)
4. readall(InputStream in, byte[] buffer, int offset, int len)
5. readAll(InputStream inputStream)
6. readAll(InputStream is, byte[] buffer, int offset, int length)
7. readAll(InputStream stream)
8. readAll(InputStream stream)
9. readAllBuffer(InputStream stream, byte[] buffer)