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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright (c) 1999 by Sun Microsystems, Inc.
* All rights reserved.
*
*/
// Opaque.java: Wrapper for byte[].
// Author: James Kempf
// Created On: Tue Apr 7 15:21:58 1998
// Last Modified By: James Kempf
// Last Modified On: Fri Jun 5 15:26:59 1998
// Update Count: 38
//
package com.sun.slp;
import java.util.*;
import java.io.*;
/**
* The Opaque class wraps Java byte arrays so we can do object-like
* things, such as deep equality comparison and printing.
*
* @author James Kempf
*/
class Opaque extends Object {
// Character to use for fill.
private static final char ZERO = '0';
// The byte array.
byte[] bytes;
// For identifying opaques.
final static String OPAQUE_HEADER = "\\ff";
// Construct a Opaque.
Opaque(byte[] nb) {
bytes = nb;
}
// Construct a byte array from an escaped string.
static byte[] unescapeByteArray(String str)
throws ServiceLocationException {
// Check for opaque header.
if (!str.startsWith(OPAQUE_HEADER)) {
throw
new ServiceLocationException(
ServiceLocationException.PARSE_ERROR,
"no_opaque_header",
new Object[] {str});
}
String string = str.substring(OPAQUE_HEADER.length());
// Process escapes to remove slash.
// string.
int i, n = string.length();
int len = 0;
int nlen = n / 3;
byte[] b = new byte[nlen];
for (i = 0; i < n; i++) {
if (string.charAt(i) != ServiceLocationAttribute.ESCAPE) {
throw
new ServiceLocationException(
ServiceLocationException.PARSE_ERROR,
"escape_err",
new Object[] {str});
}
// Get the next two characters.
if (i > n - 2) {
throw
new ServiceLocationException(
ServiceLocationException.PARSE_ERROR,
"nonterminating_escape",
new Object[] {str});
}
if (len >= nlen) {
throw
new ServiceLocationException(
ServiceLocationException.PARSE_ERROR,
"wrong_char_num",
new Object[] {str});
}
try {
i++;
b[len++] = (byte)(Integer.parseInt(
string.substring(i, i+2), 16) & 0xFF);
i++;
} catch (NumberFormatException ex) {
throw
new ServiceLocationException(
ServiceLocationException.PARSE_ERROR,
"not_hex",
new Object[] {str});
}
}
return b;
}
// Overrides Object.equals().
public boolean equals(Object o) {
if (o == this) {
return true;
}
if (!(o instanceof Opaque)) {
return false;
}
byte[] cbyte = ((Opaque)o).bytes;
// Not equal if lengths aren't.
if (cbyte.length != bytes.length) {
return false;
}
// Check inside.
int i;
for (i = 0; i < cbyte.length; i++) {
if (cbyte[i] != bytes[i]) {
return false;
}
}
return true;
}
public String toString() {
int i, n = bytes.length;
StringBuffer buf = new StringBuffer();
buf.append(OPAQUE_HEADER);
for (i = 0; i < n; i++) {
String str = null;
// Convert each byte into a string, then escape. We use
// an 8-bit encoding, LATIN1, since escapes are two
// characters only.
str = Integer.toHexString(((int)bytes[i] & 0xFF));
buf.append(ServiceLocationAttribute.ESCAPE);
if (str.length() < 2) {
buf.append(ZERO);
}
buf.append(str);
}
return buf.toString();
}
}
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