Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
/*  Copyright (c) 2010 Xiaoyun Zhu
 * 
 *  Permission is hereby granted, free of charge, to any person obtaining a copy  
 *  of this software and associated documentation files (the "Software"), to deal  
 *  in the Software without restriction, including without limitation the rights  
 *  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell  
 *  copies of the Software, and to permit persons to whom the Software is  
 *  furnished to do so, subject to the following conditions:
 *  
 *  The above copyright notice and this permission notice shall be included in  
 *  all copies or substantial portions of the Software.
 *  
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR  
 *  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,  
 *  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE  
 *  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER  
 *  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,  
 *  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN  
 *  THE SOFTWARE.  
 */

import java.nio.ByteBuffer;

import java.util.ArrayList;

import java.util.List;

public class Main {
    private static final List<ByteBuffer> byteBuffersPoolLarge = new ArrayList<ByteBuffer>();
    private static final List<ByteBuffer> byteBuffersPoolMedium = new ArrayList<ByteBuffer>();
    private static final List<ByteBuffer> byteBuffersPoolNormal = new ArrayList<ByteBuffer>();
    private static final List<ByteBuffer> byteBuffersPoolSmall = new ArrayList<ByteBuffer>();
    private static final int MAX_BUFFER_SIZE = 10;
    public static final int MAX_LINE_BYTES_LARGE = 1024 * 64;
    public static final int MAX_LINE_BYTES_MEDIUM = 1024 * 32;
    public static final int MAX_LINE_BYTES_NORMAL = 1024 * 4;
    public static final int MAX_LINE_BYTES_SMALL = 1024;
    public static final int MAX_LINE_BYTES_VERY_LARGE = 1024 * 280;

    public final static void giveBack(ByteBuffer bb) {
        if (bb != null) {
            final int capacity = bb.capacity();
            if (capacity == MAX_LINE_BYTES_SMALL) {
                if (!byteBuffersPoolSmall.contains(bb) && byteBuffersPoolSmall.size() < MAX_BUFFER_SIZE) {
                    byteBuffersPoolSmall.add(bb);
                }
            } else if (capacity == MAX_LINE_BYTES_MEDIUM) {
                if (!byteBuffersPoolMedium.contains(bb) && byteBuffersPoolMedium.size() < MAX_BUFFER_SIZE) {
                    byteBuffersPoolMedium.add(bb);
                }
            } else if (capacity == MAX_LINE_BYTES_NORMAL) {
                if (!byteBuffersPoolNormal.contains(bb) && byteBuffersPoolNormal.size() < MAX_BUFFER_SIZE) {
                    byteBuffersPoolNormal.add(bb);
                }
            } else if (capacity == MAX_LINE_BYTES_LARGE) {
                if (!byteBuffersPoolLarge.contains(bb) && byteBuffersPoolLarge.size() < MAX_BUFFER_SIZE) {
                    byteBuffersPoolLarge.add(bb);
                }
            } else if (capacity == MAX_LINE_BYTES_VERY_LARGE) {
                if (!byteBuffersPoolLarge.contains(bb) && byteBuffersPoolLarge.size() < 2) {
                    byteBuffersPoolLarge.add(bb);
                }
            } else {
                throw new IllegalArgumentException("Non compatible byte buffer size: " + capacity);
            }
            bb.clear();
        }
    }

    public final static boolean contains(final ByteBuffer bb1, final ByteBuffer bb2) {
        return contains(bb1.array(), 0, bb1.limit(), bb2.array(), 0, bb2.limit());
    }

    /**
     * 
     * @param text
     * @param offset1
     * @param end1
     *            absolute
     * @param s
     * @return
     */
    public final static boolean contains(final byte[] array1, final int offset1, final int end1,
            final byte[] array2, final int offset2, final int end2) {
        final int len1 = end1 - offset1;
        final int len2 = end2 - offset2;
        if (len2 == 0) {
            return true;
        } else if (len1 >= len2) {
            byte b;
            int idx = offset2;
            for (int i = offset1; i < end1; i++) {
                b = array1[i];
                if (b == array2[idx]) {
                    if (++idx >= end2) {
                        return true;
                    }
                } else {
                    idx = offset2;
                }
            }
        }
        return false;
    }

    public final static boolean contains(final byte[] array1, final int offset1, final int end2,
            final byte[] array2) {
        return contains(array1, offset1, end2, array2, 0, array2.length);
    }
}