// uniCenta oPOS - Touch Friendly Point Of Sale
// Copyright (c) 2009-2013 uniCenta
// http://www.unicenta.net/unicentaopos
//
// This file is part of uniCenta oPOS
//
// uniCenta oPOS 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.
//
// uniCenta oPOS 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 uniCenta oPOS. If not, see <http://www.gnu.org/licenses/>.
package com.openbravo.pos.util;
import java.io.ByteArrayOutputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Random;
public class StringUtils {
private static final char [] hexchars = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
private static final NumberFormat cardformat = new DecimalFormat("000000");
private static final Random cardrandom = new Random();
/** Creates a new instance of StringUtils */
private StringUtils() {
}
public static String getCardNumber() {
return cardformat.format(Math.abs(System.currentTimeMillis()) % 1000000L)
+ cardformat.format(Math.abs(cardrandom.nextLong()) % 1000000L);
}
public static String encodeXML(String sValue) {
if (sValue == null) {
return null;
} else {
StringBuilder buffer = new StringBuilder();
for (int i = 0; i < sValue.length(); i++) {
char charToCompare = sValue.charAt(i);
if (charToCompare == '&') {
buffer.append("&");
} else if (charToCompare == '<') {
buffer.append("<");
} else if (charToCompare == '>') {
buffer.append(">");
} else if (charToCompare == '\"') {
buffer.append(""");
} else if (charToCompare == '\'') {
buffer.append("'");
} else {
buffer.append(charToCompare);
}
}
return buffer.toString();
}
}
public static String byte2hex(byte[] binput) {
StringBuilder sb = new StringBuilder(binput.length * 2);
for (int i = 0; i < binput.length; i++) {
int high = ((binput[i] & 0xF0) >> 4);
int low = (binput[i] & 0x0F);
sb.append(hexchars[high]);
sb.append(hexchars[low]);
}
return sb.toString();
}
public static byte [] hex2byte(String sinput) {
int length = sinput.length();
if ((length & 0x01) != 0) {
throw new IllegalArgumentException("odd number of characters.");
}
byte[] out = new byte[length >> 1];
// two characters form the hex value.
for (int i = 0, j = 0; j < length; i++) {
int f = Character.digit(sinput.charAt(j++), 16) << 4;
f = f | Character.digit(sinput.charAt(j++), 16);
out[i] = (byte) (f & 0xFF);
}
return out;
}
public static String readResource(String resource) throws IOException {
InputStream in = StringUtils.class.getResourceAsStream(resource);
if (in == null) {
throw new FileNotFoundException(resource);
}
ByteArrayOutputStream out = new ByteArrayOutputStream();
byte[] buffer = new byte[1024];
int len;
while ((len = in.read(buffer)) > 0) {
out.write(buffer, 0, len);
}
byte[] data = out.toByteArray();
return new String(data, "UTF-8");
}
public static boolean isNumber(String sCardNumber){
if ( (sCardNumber==null) || (sCardNumber.equals("")) ){
return false;
}
for (int i = 0; i < sCardNumber.length(); i++) {
char c = sCardNumber.charAt(i);
if (c != '0' && c != '1' && c != '2' && c != '3' && c != '4' && c != '5' && c != '6' && c != '7' && c != '8' && c != '9') {
return false;
}
}
return true;
}
}