/*
* JMule - Java file sharing client
* Copyright (C) 2007-2008 JMule team ( jmule@jmule.org / http://jmule.org )
*
* Any parts of this program derived from other projects, or contributed
* by third-party developers are copyrighted by their respective authors.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
package org.jmule.core.utils;
import static org.jmule.core.edonkey.E2DKConstants.PARTSIZE;
import java.io.ByteArrayOutputStream;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.lang.reflect.Method;
import java.nio.ByteBuffer;
import java.nio.ByteOrder;
import java.nio.channels.FileChannel;
import javax.management.JMException;
import org.jmule.core.edonkey.packet.tag.NumberTag;
import org.jmule.core.edonkey.packet.tag.Tag;
/**
*
* @author binary256
* @version $$Revision: 1.6 $$
* Last changed by $$Author: javajox $$ on $$Date: 2010/01/05 14:34:21 $$
*/
public class Misc {
public static final int INFINITY_AS_INT = 31536000;
public static String getStackTrace(Throwable e) {
try {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
PrintWriter pw = new PrintWriter(new OutputStreamWriter(baos));
e.printStackTrace(pw);
pw.close();
return baos.toString();
} catch (Throwable ignore) {
return "";
}
}
public static int compareAllObjects(Object object1, Object object2,String methodName,boolean order) {
Class cl = object1.getClass();
Object result1 = null, result2 = null;
try {
Method m = cl.getMethod(methodName, null);
result1 = m.invoke(object1, null);
result2 = m.invoke(object2, null);
if (result1 instanceof String) {
String name1 = (String)result1;
String name2 = (String)result2;
int result = name1.compareTo(name2);
if (order)
return result;
else
return reverse(result);
}
if (result1 instanceof Integer) {
int int1 = (Integer)result1;
int int2 = (Integer)result2;
int result = 0;
if (int1>int2) result = 1;
if (int1<int2) result = -1;
if (order)
return result;
else
return reverse(result);
}
if (result1 instanceof Long) {
long int1 = (Long)result1;
long int2 = (Long)result2;
int result = 0;
if (int1>int2) result = 1;
if (int1<int2) result = -1;
if (order)
return result;
else
return reverse(result);
}
if (result1 instanceof Float) {
float int1 = (Float)result1;
float int2 = (Float)result2;
int result = 0;
if (int1>int2) result = 1;
if (int1<int2) result = -1;
if (order)
return result;
else
return reverse(result);
}
if (result1 instanceof Double) {
double int1 = (Double)result1;
double int2 = (Double)result2;
int result = 0;
if (int1>int2) result = 1;
if (int1<int2) result = -1;
if (order)
return result;
else
return reverse(result);
}
if (result1 instanceof Boolean) {
boolean b1 = (Boolean)result1;
boolean b2 = (Boolean)result2;
int result = 0;
if ((b1==true)&&(b2==false)) result = 1;
if ((b1==false)&&(b2==true)) result = -1;
if (order)
return result;
else
return reverse(result);
}
String name1 = result1 + "";
String name2 = result2 + "";
int result = name1.compareTo(name2);
if (order)
return result;
else
return reverse(result);
} catch (Throwable e) {
e.printStackTrace();
}
return 0;
}
public static final String NO_EXTENSION = "no extension";
public static String getFileExtension(String fileName) {
int id = fileName.length()-1;
while(id>0) {
if (fileName.charAt(id)=='.') break;
id--;
}
String extension = NO_EXTENSION;
if (id!=0)
extension = fileName.substring(id+1, fileName.length());
return extension;
}
public static int reverse(int value) {
if (value<0) return 1;
if (value>0) return -1;
return 0;
}
public static ByteBuffer getByteBuffer(long bufferSize) {
ByteBuffer data = ByteBuffer.allocate(8);
data.order(ByteOrder.LITTLE_ENDIAN);
data.putLong(bufferSize);
return ByteBuffer.allocate(data.getInt(0)).order(
ByteOrder.LITTLE_ENDIAN);
}
public static long extractNumberTag(Tag tag) throws JMException {
if (tag instanceof NumberTag) {
NumberTag ntag = (NumberTag) tag;
return ntag.getNumber();
}
throw new JMException("Tag is not number tag\n"+tag);
}
/**
*
* @param source
* @param destination
* @throws Exception
* @deprecated
*/
public static void copyFile(String source, String destination) throws Exception {
FileChannel srcChannel = new FileInputStream(source).getChannel();
FileChannel dstChannel = new FileOutputStream(destination).getChannel();
dstChannel.transferFrom(srcChannel, 0, srcChannel.size());
srcChannel.close();
dstChannel.close();
}
public static int getPartCount(long fileSize) {
if (fileSize<PARTSIZE) return 0;
int partCount = (int)(fileSize/PARTSIZE);
if (fileSize%PARTSIZE !=0) partCount++;
return partCount;
}
public static byte getByte(int num,int pos) {
ByteBuffer data = Misc.getByteBuffer(4);
data.putInt(0, num);
return data.get(pos);
}
public static boolean isHexadecimalNumber(String number) {
if(number.length() == 0) return false;
if(number.length() % 2 != 0) return false;
for(Character current_char : number.toCharArray()) {
char char_to_test = current_char.toUpperCase(current_char);
if ( '0' <= char_to_test && char_to_test <= '9' )
continue;
if ( 'A' <= char_to_test && char_to_test <= 'F' )
continue;
return false;
}
return true;
}
public static void w(String string) {
System.out.println( string );
}
public static void wl(String string) {
System.out.print( string );
}
}