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 static final int indexOfP(final ByteBuffer bb, final byte b) {
        return indexOf(bb.array(), bb.position(), bb.remaining(), b);
    }

    public static final int indexOfP(final ByteBuffer lineBB, final byte[][] textsLower,
            final byte[][] textsUpper) {
        return indexOf(lineBB.array(), lineBB.position(), lineBB.limit(), textsLower, textsUpper);
    }

    /**
     * 
     * @param bb
     * @param offset
     *            absolute
     * @param limit
     *            absolute
     * @param b
     * @return absolute index
     */
    public static final int indexOf(final byte[] bb, final int offset, final int limit, final byte b) {
        for (int i = offset; i < limit; i++) {
            if (bb[i] == b) {
                return i;
            }
        }
        return -1;
    }

    /**
     * 
     * @param text
     * @param offset
     * @param len
     *            relative
     * @param s
     * @return absolute index
     */
    public final static int indexOf(final byte[] text, final int offset, final int len, final byte[] s) {
        return indexOf(text, offset, len, s, 0, s.length);
    }

    /**
     * 
     * @param text
     * @param offset
     * @param len1
     *            relative
     * @param s
     * @param offset2
     * @param len2
     *            relative
     * @return absolute index
     */
    public final static int indexOf(final byte[] text, final int offset, final int len1, final byte[] s,
            final int offset2, final int len2) {
        if (len1 >= len2) {
            final int limit = offset + len1;
            int idx = 0;
            byte b;
            for (int i = offset; i < limit; i++) {
                b = text[i];
                if (b == s[offset2 + idx]) {
                    if (++idx == len2) {
                        return i - len2 + 1;
                    }
                } else {
                    idx = 0;
                }
            }
        }
        return -1;
    }

    public static final int indexOf(final ByteBuffer bb, final byte b) {
        return indexOf(bb.array(), 0, bb.limit(), b);
    }

    public final static int indexOf(final char[][] pairs, final char c) {
        int i = 0;
        for (final char[] pair : pairs) {
            if (c == pair[0]) {
                return i;
            }
            i++;
        }
        return -1;
    }

    public static final int indexOf(final byte[] array, final int position, final int limit,
            final byte[][] textsLower, final byte[][] textsUpper) {
        byte b;
        int[] idx = new int[textsLower.length];
        for (int i = position; i < limit; i++) {
            b = array[i];
            for (int j = 0; j < idx.length; j++) {
                final int textIdx = idx[j];
                final byte[] textLower = textsLower[j];
                final byte[] textUpper = textsUpper[j];
                if (b == textLower[textIdx] || b == textUpper[textIdx]) {
                    if (textIdx + 1 < textLower.length) {
                        idx[j] = textIdx + 1;
                    } else {
                        return i - textLower.length + 1;
                    }
                } else {
                    idx[j] = 0;
                }
            }
        }
        return -1;
    }
}