GkUtils.java

/*******************************************************************************
 * 	This file is part of Goko.
 *
 *   Goko 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 3 of the License, or
 *   (at your option) any later version.
 *
 *   Goko 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 Goko.  If not, see <http://www.gnu.org/licenses/>.
 *******************************************************************************/
package org.goko.core.common;

import java.math.BigDecimal;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.ArrayList;
import java.util.List;

import org.apache.commons.lang3.ArrayUtils;
import org.apache.commons.lang3.StringUtils;
import org.goko.core.common.exception.GkException;
import org.goko.core.common.exception.GkTechnicalException;

public class GkUtils {

	public static List<Byte> toBytesList(String... strings){
		List<Byte> lst = new ArrayList<Byte>();
		if(strings != null){
			for (String str : strings) {
				for(byte b : str.getBytes()){
					lst.add(new Byte(b));
				}
			}
		}
		return lst;
	}


	public static List<Byte> toBytesList(byte[] arr){
		List<Byte> lst = new ArrayList<Byte>();
		if(arr != null){
			for(int i = 0; i < arr.length; i++) {
				lst.add(new Byte(arr[i]));
			}
		}
		return lst;
	}

	public static List<Byte> addBytesArray(List<Byte> lst, byte[] arr){
		if(arr != null){
			for(int i = 0; i < arr.length; i++) {
				lst.add(new Byte(arr[i]));
			}
		}
		return lst;
	}

	public static BigDecimal toBigDecimal(String str) throws GkException{
		DecimalFormat df = (DecimalFormat) NumberFormat.getInstance();
		df.setParseBigDecimal(true);
		try {
			return (BigDecimal) df.parse(str);
		} catch (ParseException e) {			
			throw new GkTechnicalException(e);
		}
	}
	public static String toString(byte[] data){
		StringBuffer 	buffer = new StringBuffer(data.length);

		for(byte b : data){
				buffer.append((char)b);
		}
		return buffer.toString();
	}
	public static String toString(List<Byte> data){
		StringBuffer 	buffer = new StringBuffer(data.size());
		byte[] 			byteArray = ArrayUtils.toPrimitive(data.toArray(new Byte[]{}));

		for(byte b : byteArray){
				buffer.append((char)b);
		}
		return buffer.toString();
	}

	public static String toStringReplaceCRLF(List<Byte> data){
		String str = GkUtils.toString(data);
		str = StringUtils.replace(str, ""+'\n', "\\n");
		str = StringUtils.replace(str, ""+'\r', "\\r");
		return str;
	}
	public static String toStringReplaceCRLF(byte[] data){
		String str = GkUtils.toString(data);
		str =  StringUtils.replace(str, ""+'\n', "\\n");
		str =  StringUtils.replace(str, ""+'\r', "\\r");
		return str;
	}
	
}