/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 2005 Sun Microsystems, Inc. All rights reserved.
*/
/*
* $Id: Utils.java 1197150 2011-11-03 14:34:57Z coheigea $
*/
package org.apache.jcp.xml.dsig.internal.dom;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
/**
* 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<Node> toNodeSet(Iterator<Node> i) {
Set<Node> nodeSet = new HashSet<Node>();
while (i.hasNext()) {
Node n = 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) == '#'));
}
}