java.util.XMLUtils Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of android-all Show documentation
Show all versions of android-all Show documentation
A library jar that provides APIs for Applications written for the Google Android Platform.
/*
* Copyright (C) 2014 The Android Open Source Project
* Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package java.util;
import java.io.*;
import org.xml.sax.*;
import org.xml.sax.helpers.*;
import org.w3c.dom.*;
import javax.xml.parsers.*;
import javax.xml.transform.*;
import javax.xml.transform.dom.*;
import javax.xml.transform.stream.*;
/**
* A class used to aid in Properties load and save in XML. Keeping this
* code outside of Properties helps reduce the number of classes loaded
* when Properties is loaded.
*
* @author Michael McCloskey
* @since 1.3
*/
class XMLUtils {
// XML loading and saving methods for Properties
// The required DTD URI for exported properties
private static final String PROPS_DTD_URI =
"http://java.sun.com/dtd/properties.dtd";
private static final String PROPS_DTD =
"" +
"" +
""+
"" +
"" +
"" +
"";
/**
* Version number for the format of exported properties files.
*/
private static final String EXTERNAL_XML_VERSION = "1.0";
static void load(Properties props, InputStream in)
throws IOException, InvalidPropertiesFormatException
{
Document doc = null;
try {
doc = getLoadingDoc(in);
} catch (SAXException saxe) {
throw new InvalidPropertiesFormatException(saxe);
}
Element propertiesElement = doc.getDocumentElement();
String xmlVersion = propertiesElement.getAttribute("version");
if (xmlVersion.compareTo(EXTERNAL_XML_VERSION) > 0)
throw new InvalidPropertiesFormatException(
"Exported Properties file format version " + xmlVersion +
" is not supported. This java installation can read" +
" versions " + EXTERNAL_XML_VERSION + " or older. You" +
" may need to install a newer version of JDK.");
importProperties(props, propertiesElement);
}
static Document getLoadingDoc(InputStream in)
throws SAXException, IOException
{
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
dbf.setIgnoringElementContentWhitespace(true);
// Android-changed: We don't currently have a validating document builder.
// Revert this if the situation changes.
//
// dbf.setValidating(true);
dbf.setCoalescing(true);
dbf.setIgnoringComments(true);
try {
DocumentBuilder db = dbf.newDocumentBuilder();
db.setEntityResolver(new Resolver());
db.setErrorHandler(new EH());
InputSource is = new InputSource(in);
return db.parse(is);
} catch (ParserConfigurationException x) {
throw new Error(x);
}
}
static void importProperties(Properties props, Element propertiesElement) {
NodeList entries = propertiesElement.getChildNodes();
int numEntries = entries.getLength();
int start = numEntries > 0 &&
entries.item(0).getNodeName().equals("comment") ? 1 : 0;
for (int i=start; i