Util.java

/**
 * Copyright (c)2010-2011 Enterprise Website Content Management System(EWCMS), All rights reserved.
 * EWCMS PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 * http://www.ewcms.com
 */
package com.ewcms.plugin.crawler.generate.util;


/**
 * @author Yasser Ganjisaffar <lastname at gmail dot com>
 */
public class Util {
	
	public static byte[] long2ByteArray(long l) {
		byte[] array = new byte[8];
        int i, shift;                  
        for(i = 0, shift = 56; i < 8; i++, shift -= 8) {
        	array[i] = (byte)(0xFF & (l >> shift));
        }
        return array;
    }
    
    public static byte[] int2ByteArray(int value) {
    	byte[] b = new byte[4];
        for (int i = 0; i < 4; i++) {
            int offset = (3 - i) * 8;
            b[i] = (byte) ((value >>> offset) & 0xFF);
        }
        return b;
    }
    
    public static void putIntInByteArray(int value, byte[] buf, int offset) {
        for (int i = 0; i < 4; i++) {
            int valueOffset = (3 - i) * 8;
            buf[offset + i] = (byte) ((value >>> valueOffset) & 0xFF);
        }
    }
    
    public static int byteArray2Int(byte[] b) {
        int value = 0;
        for (int i = 0; i < 4; i++) {
            int shift = (4 - 1 - i) * 8;
            value += (b[i] & 0x000000FF) << shift;
        }
        return value;
    }
    
    public static long byteArray2Long(byte[] b) {
        int value = 0;
        for (int i = 0; i < 8; i++) {
            int shift = (8 - 1 - i) * 8;
            value += (b[i] & 0x000000FF) << shift;
        }
        return value;
    }

    public static boolean hasBinaryContent(String contentType) {
		if (contentType != null) {
			String typeStr = contentType.toLowerCase();
			if (typeStr.contains("image") || typeStr.contains("audio") || typeStr.contains("video") || typeStr.contains("application")) {
				return true;
			}
		}
		return false;
    }
    
    public static boolean hasPlainTextContent(String contentType) {
		if (contentType != null) {
			String typeStr = contentType.toLowerCase();
			if (typeStr.contains("text/plain")) {				
				return true;
			}
		}
		return false;
    }
}