History

My first initial commit with all of mine experimental changes.

Dmitry Kabak (userdima committed 13 years ago

Commit d37b88d1 parent 3f5b46618352 files · +2598093 −-8690Browse files

Showing the changes to java/pkg/java/util/XMLUtils.java (1 of 18352 files). Show all

Unified · Split

java/pkg/java/util/XMLUtils.java+206−0
@@ -0,0 +1,206 @@
1+/*
2+ * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
3+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4+ *
5+ * This code is free software; you can redistribute it and/or modify it
6+ * under the terms of the GNU General Public License version 2 only, as
7+ * published by the Free Software Foundation. Oracle designates this
8+ * particular file as subject to the "Classpath" exception as provided
9+ * by Oracle in the LICENSE file that accompanied this code.
10+ *
11+ * This code is distributed in the hope that it will be useful, but WITHOUT
12+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14+ * version 2 for more details (a copy is included in the LICENSE file that
15+ * accompanied this code).
16+ *
17+ * You should have received a copy of the GNU General Public License version
18+ * 2 along with this work; if not, write to the Free Software Foundation,
19+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20+ *
21+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22+ * or visit www.oracle.com if you need additional information or have any
23+ * questions.
24+ */
25+
26+package java.util;
27+
28+import java.io.*;
29+import org.xml.sax.*;
30+import org.xml.sax.helpers.*;
31+import org.w3c.dom.*;
32+import javax.xml.parsers.*;
33+import javax.xml.transform.*;
34+import javax.xml.transform.dom.*;
35+import javax.xml.transform.stream.*;
36+
37+/**
38+ * A class used to aid in Properties load and save in XML. Keeping this
39+ * code outside of Properties helps reduce the number of classes loaded
40+ * when Properties is loaded.
41+ *
42+ * @author Michael McCloskey
43+ * @since 1.3
44+ */
45+class XMLUtils {
46+
47+ // XML loading and saving methods for Properties
48+
49+ // The required DTD URI for exported properties
50+ private static final String PROPS_DTD_URI =
51+ "http://java.sun.com/dtd/properties.dtd";
52+
53+ private static final String PROPS_DTD =
54+ "<?xml version=\"1.0\" encoding=\"UTF-8\"?>" +
55+ "<!-- DTD for properties -->" +
56+ "<!ELEMENT properties ( comment?, entry* ) >"+
57+ "<!ATTLIST properties" +
58+ " version CDATA #FIXED \"1.0\">" +
59+ "<!ELEMENT comment (#PCDATA) >" +
60+ "<!ELEMENT entry (#PCDATA) >" +
61+ "<!ATTLIST entry " +
62+ " key CDATA #REQUIRED>";
63+
64+ /**
65+ * Version number for the format of exported properties files.
66+ */
67+ private static final String EXTERNAL_XML_VERSION = "1.0";
68+
69+ static void load(Properties props, InputStream in)
70+ throws IOException, InvalidPropertiesFormatException
71+ {
72+ Document doc = null;
73+ try {
74+ doc = getLoadingDoc(in);
75+ } catch (SAXException saxe) {
76+ throw new InvalidPropertiesFormatException(saxe);
77+ }
78+ Element propertiesElement = (Element)doc.getChildNodes().item(1);
79+ String xmlVersion = propertiesElement.getAttribute("version");
80+ if (xmlVersion.compareTo(EXTERNAL_XML_VERSION) > 0)
81+ throw new InvalidPropertiesFormatException(
82+ "Exported Properties file format version " + xmlVersion +
83+ " is not supported. This java installation can read" +
84+ " versions " + EXTERNAL_XML_VERSION + " or older. You" +
85+ " may need to install a newer version of JDK.");
86+ importProperties(props, propertiesElement);
87+ }
88+
89+ static Document getLoadingDoc(InputStream in)
90+ throws SAXException, IOException
91+ {
92+ DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
93+ dbf.setIgnoringElementContentWhitespace(true);
94+ dbf.setValidating(true);
95+ dbf.setCoalescing(true);
96+ dbf.setIgnoringComments(true);
97+ try {
98+ DocumentBuilder db = dbf.newDocumentBuilder();
99+ db.setEntityResolver(new Resolver());
100+ db.setErrorHandler(new EH());
101+ InputSource is = new InputSource(in);
102+ return db.parse(is);
103+ } catch (ParserConfigurationException x) {
104+ throw new Error(x);
105+ }
106+ }
107+
108+ static void importProperties(Properties props, Element propertiesElement) {
109+ NodeList entries = propertiesElement.getChildNodes();
110+ int numEntries = entries.getLength();
111+ int start = numEntries > 0 &&
112+ entries.item(0).getNodeName().equals("comment") ? 1 : 0;
113+ for (int i=start; i<numEntries; i++) {
114+ Element entry = (Element)entries.item(i);
115+ if (entry.hasAttribute("key")) {
116+ Node n = entry.getFirstChild();
117+ String val = (n == null) ? "" : n.getNodeValue();
118+ props.setProperty(entry.getAttribute("key"), val);
119+ }
120+ }
121+ }
122+
123+ static void save(Properties props, OutputStream os, String comment,
124+ String encoding)
125+ throws IOException
126+ {
127+ DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
128+ DocumentBuilder db = null;
129+ try {
130+ db = dbf.newDocumentBuilder();
131+ } catch (ParserConfigurationException pce) {
132+ assert(false);
133+ }
134+ Document doc = db.newDocument();
135+ Element properties = (Element)
136+ doc.appendChild(doc.createElement("properties"));
137+
138+ if (comment != null) {
139+ Element comments = (Element)properties.appendChild(
140+ doc.createElement("comment"));
141+ comments.appendChild(doc.createTextNode(comment));
142+ }
143+
144+ synchronized (props) {
145+ for (String key : props.stringPropertyNames()) {
146+ Element entry = (Element)properties.appendChild(
147+ doc.createElement("entry"));
148+ entry.setAttribute("key", key);
149+ entry.appendChild(doc.createTextNode(props.getProperty(key)));
150+ }
151+ }
152+ emitDocument(doc, os, encoding);
153+ }
154+
155+ static void emitDocument(Document doc, OutputStream os, String encoding)
156+ throws IOException
157+ {
158+ TransformerFactory tf = TransformerFactory.newInstance();
159+ Transformer t = null;
160+ try {
161+ t = tf.newTransformer();
162+ t.setOutputProperty(OutputKeys.DOCTYPE_SYSTEM, PROPS_DTD_URI);
163+ t.setOutputProperty(OutputKeys.INDENT, "yes");
164+ t.setOutputProperty(OutputKeys.METHOD, "xml");
165+ t.setOutputProperty(OutputKeys.ENCODING, encoding);
166+ } catch (TransformerConfigurationException tce) {
167+ assert(false);
168+ }
169+ DOMSource doms = new DOMSource(doc);
170+ StreamResult sr = new StreamResult(os);
171+ try {
172+ t.transform(doms, sr);
173+ } catch (TransformerException te) {
174+ IOException ioe = new IOException();
175+ ioe.initCause(te);
176+ throw ioe;
177+ }
178+ }
179+
180+ private static class Resolver implements EntityResolver {
181+ public InputSource resolveEntity(String pid, String sid)
182+ throws SAXException
183+ {
184+ if (sid.equals(PROPS_DTD_URI)) {
185+ InputSource is;
186+ is = new InputSource(new StringReader(PROPS_DTD));
187+ is.setSystemId(PROPS_DTD_URI);
188+ return is;
189+ }
190+ throw new SAXException("Invalid system identifier: " + sid);
191+ }
192+ }
193+
194+ private static class EH implements ErrorHandler {
195+ public void error(SAXParseException x) throws SAXException {
196+ throw x;
197+ }
198+ public void fatalError(SAXParseException x) throws SAXException {
199+ throw x;
200+ }
201+ public void warning(SAXParseException x) throws SAXException {
202+ throw x;
203+ }
204+ }
205+
206+}