/*
* reserved comment block
* DO NOT REMOVE OR ALTER!
*/
/*
* Copyright 2005 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.
*
*/
/*
* Copyright (c) 2005, 2008, Oracle and/or its affiliates. All rights reserved.
*/
/*
* $Id: Utils.java,v 1.2 2008/07/24 15:20:32 mullan Exp $
*/
package org.jcp.xml.dsig.internal.dom;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.IOException;
import java.util.*;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
/**
* Miscellaneous static utility methods for use in JSR 105 RI.
*
* @author Sean Mullan
*/
public final class Utils {
private Utils() {}
public static byte[] readBytesFromStream(InputStream is)
throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[1024];
while (true) {
int read = is.read(buf);
if (read == -1) { // EOF
break;
}
baos.write(buf, 0, read);
if (read < 1024) {
break;
}
}
return baos.toByteArray();
}
/**
* Converts an Iterator to a Set of Nodes, according to the XPath
* Data Model.
*
* @param i the Iterator
* @return the Set of Nodes
*/
static Set toNodeSet(Iterator i) {
Set nodeSet = new HashSet();
while (i.hasNext()) {
Node n = (Node) i.next();
nodeSet.add(n);
// insert attributes nodes to comply with XPath
if (n.getNodeType() == Node.ELEMENT_NODE) {
NamedNodeMap nnm = n.getAttributes();
for (int j = 0, length = nnm.getLength(); j < length; j++) {
nodeSet.add(nnm.item(j));
}
}
}
return nodeSet;
}
/**
* Returns the ID from a same-document URI (ex: "#id")
*/
public static String parseIdFromSameDocumentURI(String uri) {
if (uri.length() == 0) {
return null;
}
String id = uri.substring(1);
if (id != null && id.startsWith("xpointer(id(")) {
int i1 = id.indexOf('\'');
int i2 = id.indexOf('\'', i1+1);
id = id.substring(i1+1, i2);
}
return id;
}
/**
* Returns true if uri is a same-document URI, false otherwise.
*/
public static boolean sameDocumentURI(String uri) {
return (uri != null && (uri.length() == 0 || uri.charAt(0) == '#'));
}
}