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;

public class Main {
    public final static int countP(final ByteBuffer bb, final byte[] text) {
        final int endIdx = bb.limit();
        final byte[] array = bb.array();
        return count(array, bb.position(), endIdx, text, 0, text.length);
    }

    public final static int countP(final ByteBuffer bb1, final ByteBuffer bb2) {
        final int end1 = bb1.limit();
        final int end2 = bb2.limit();
        final int offset1 = bb1.position();
        final int offset2 = bb2.position();
        final byte[] array1 = bb1.array();
        final byte[] array2 = bb2.array();
        return count(array1, offset1, end1, array2, offset2, end2);
    }

    public final static int count(final byte[] array1, final int offset1, final int end1, final byte[] array2) {
        return count(array1, offset1, end1, array2, 0, array2.length);
    }

    public final static int count(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;
        int count = 0;
        if (len2 > 0 && len1 >= len2) {
            byte b;
            int idx = offset2;
            for (int i = offset1; i < end1; i++) {
                b = array1[i];
                if (b == array2[idx]) {
                    if (++idx >= end2) {
                        count++;
                        idx = offset2;
                    }
                } else {
                    idx = offset2;
                }
            }
        }
        return count;
    }

    public final static int count(final ByteBuffer bb, final byte[] text) {
        final int endIdx = bb.limit();
        final byte[] array = bb.array();
        return count(array, 0, endIdx, text, 0, text.length);
    }

    public final static int count(final ByteBuffer bb1, final ByteBuffer bb2) {
        final int end1 = bb1.limit();
        final int end2 = bb2.limit();
        final byte[] array1 = bb1.array();
        final byte[] array2 = bb2.array();
        return count(array1, 0, end1, array2, 0, end2);
    }
}