Java Byte Array Convert To bytes2byteArray(byte[] bytes, byte separator)

Description

Splits the array of bytes into array of arrays of bytes on byte separator

License

Apache License

Parameter

Parameter	Description
bytes	the array of bytes to split
separator	the delimiting byte

Declaration

public static byte[][] bytes2byteArray(byte[] bytes, byte separator) 

Method Source Code

//package com.java2s;
/**//from   ww w .j a  va 2  s  .  c  o m
 * 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.
 */

public class Main {
    /**
     * Splits the array of bytes into array of arrays of bytes
     * on byte separator
     * @param bytes the array of bytes to split
     * @param separator the delimiting byte
     */
    public static byte[][] bytes2byteArray(byte[] bytes, byte separator) {
        return bytes2byteArray(bytes, bytes.length, separator);
    }

    /**
     * Splits first len bytes in bytes to array of arrays of bytes
     * on byte separator
     * @param bytes the byte array to split
     * @param len the number of bytes to split
     * @param separator the delimiting byte
     */
    public static byte[][] bytes2byteArray(byte[] bytes, int len,
            byte separator) {
        assert len <= bytes.length;
        int splits = 0;
        if (len == 0) {
            return new byte[][] { null };
        }
        // Count the splits. Omit multiple separators and the last one
        for (int i = 0; i < len; i++) {
            if (bytes[i] == separator) {
                splits++;
            }
        }
        int last = len - 1;
        while (last > -1 && bytes[last--] == separator) {
            splits--;
        }
        if (splits == 0 && bytes[0] == separator) {
            return new byte[][] { null };
        }
        splits++;
        byte[][] result = new byte[splits][];
        int startIndex = 0;
        int nextIndex = 0;
        int index = 0;
        // Build the splits
        while (index < splits) {
            while (nextIndex < len && bytes[nextIndex] != separator) {
                nextIndex++;
            }
            result[index] = new byte[nextIndex - startIndex];
            System.arraycopy(bytes, startIndex, result[index], 0, nextIndex
                    - startIndex);
            index++;
            startIndex = nextIndex + 1;
            nextIndex = startIndex;
        }
        return result;
    }
}

Related

1. bytes2Bin(byte[] bytes)
2. bytes2boolean(final byte[] b)
3. bytes2Chars(byte[] bytes)
4. bytes2humanReadable(long bytes)
5. bytes2intLE(byte[] bytes, int offset, int len)
6. bytes2ip(byte[] bytes)