/*
* Copyright 2001-2004 The Apache Software Foundation.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.axis.types ;
import org.apache.axis.utils.Messages;
import java.io.ByteArrayOutputStream;
/**
* Custom class for supporting primitive XSD data type hexBinary.
*
* @author Davanum Srinivas <dims@yahoo.com>
*/
public class HexBinary extends Object implements java.io.Serializable{
byte[] m_value = null;
public HexBinary() {
}
public HexBinary(String string){
m_value = decode(string);
}
public HexBinary(byte[] bytes){
m_value = bytes;
}
public byte[] getBytes(){
return m_value;
}
public String toString(){
return encode(m_value);
}
public int hashCode(){
//TODO: How do we hash this?
return super.hashCode();
}
public boolean equals(Object object){
//TODO: Is this good enough?
String s1 = object.toString();
String s2 = this.toString();
return s1.equals(s2);
}
public static final String ERROR_ODD_NUMBER_OF_DIGITS =
Messages.getMessage("oddDigits00");
public static final String ERROR_BAD_CHARACTER_IN_HEX_STRING =
Messages.getMessage("badChars01");
// Code from Ajp11, from Apache's JServ
// Table for HEX to DEC byte translation
public static final int[] DEC = {
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
00, 01, 02, 03, 04, 05, 06, 07, 8, 9, -1, -1, -1, -1, -1, -1,
-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, 10, 11, 12, 13, 14, 15, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
};
/**
* Convert a String of hexadecimal digits into the corresponding
* byte array by encoding each two hexadecimal digits as a byte.
*
* @param digits Hexadecimal digits representation
*
* @exception IllegalArgumentException if an invalid hexadecimal digit
* is found, or the input string contains an odd number of hexadecimal
* digits
*/
public static byte[] decode(String digits) {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
for (int i = 0; i < digits.length(); i += 2) {
char c1 = digits.charAt(i);
if ((i+1) >= digits.length())
throw new IllegalArgumentException
(ERROR_ODD_NUMBER_OF_DIGITS);
char c2 = digits.charAt(i + 1);
byte b = 0;
if ((c1 >= '0') && (c1 <= '9'))
b += ((c1 - '0') * 16);
else if ((c1 >= 'a') && (c1 <= 'f'))
b += ((c1 - 'a' + 10) * 16);
else if ((c1 >= 'A') && (c1 <= 'F'))
b += ((c1 - 'A' + 10) * 16);
else
throw new IllegalArgumentException
(ERROR_BAD_CHARACTER_IN_HEX_STRING);
if ((c2 >= '0') && (c2 <= '9'))
b += (c2 - '0');
else if ((c2 >= 'a') && (c2 <= 'f'))
b += (c2 - 'a' + 10);
else if ((c2 >= 'A') && (c2 <= 'F'))
b += (c2 - 'A' + 10);
else
throw new IllegalArgumentException
(ERROR_BAD_CHARACTER_IN_HEX_STRING);
baos.write(b);
}
return (baos.toByteArray());
}
/**
* Convert a byte array into a printable format containing a
* String of hexadecimal digit characters (two per byte).
*
* @param bytes Byte array representation
*/
public static String encode(byte bytes[]) {
StringBuffer sb = new StringBuffer(bytes.length * 2);
for (int i = 0; i < bytes.length; i++) {
sb.append(convertDigit((int) (bytes[i] >> 4)));
sb.append(convertDigit((int) (bytes[i] & 0x0f)));
}
return (sb.toString());
}
/**
* Convert 4 hex digits to an int, and return the number of converted
* bytes.
*
* @param hex Byte array containing exactly four hexadecimal digits
*
* @exception IllegalArgumentException if an invalid hexadecimal digit
* is included
*/
public static int convert2Int( byte[] hex ) {
// Code from Ajp11, from Apache's JServ
// assert b.length==4
// assert valid data
int len;
if(hex.length < 4 ) return 0;
if( DEC[hex[0]]<0 )
throw new IllegalArgumentException(ERROR_BAD_CHARACTER_IN_HEX_STRING);
len = DEC[hex[0]];
len = len << 4;
if( DEC[hex[1]]<0 )
throw new IllegalArgumentException(ERROR_BAD_CHARACTER_IN_HEX_STRING);
len += DEC[hex[1]];
len = len << 4;
if( DEC[hex[2]]<0 )
throw new IllegalArgumentException(ERROR_BAD_CHARACTER_IN_HEX_STRING);
len += DEC[hex[2]];
len = len << 4;
if( DEC[hex[3]]<0 )
throw new IllegalArgumentException(ERROR_BAD_CHARACTER_IN_HEX_STRING);
len += DEC[hex[3]];
return len;
}
/**
* [Private] Convert the specified value (0 .. 15) to the corresponding
* hexadecimal digit.
*
* @param value Value to be converted
*/
private static char convertDigit(int value) {
value &= 0x0f;
if (value >= 10)
return ((char) (value - 10 + 'a'));
else
return ((char) (value + '0'));
}
}
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