--- a/jaxp/src/java.xml/share/classes/com/sun/org/apache/xml/internal/resolver/tools/ResolvingXMLFilter.java Mon Jun 19 11:41:21 2017 +0200
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,346 +0,0 @@
-/*
- * 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.
- */
-
-package com.sun.org.apache.xml.internal.resolver.tools;
-
-import java.io.IOException;
-import java.io.InputStream;
-import java.net.MalformedURLException;
-import java.net.URL;
-
-import org.xml.sax.InputSource;
-import org.xml.sax.SAXException;
-import org.xml.sax.XMLReader;
-import org.xml.sax.Attributes;
-import org.xml.sax.helpers.XMLFilterImpl;
-
-import com.sun.org.apache.xml.internal.resolver.Catalog;
-import com.sun.org.apache.xml.internal.resolver.CatalogManager;
-
-import com.sun.org.apache.xml.internal.resolver.helpers.FileURL;
-
-/**
- * A SAX XMLFilter that performs catalog-based entity resolution.
- *
- * <p>This class implements a SAX XMLFilter that performs entity resolution
- * using the CatalogResolver. The actual, underlying parser is obtained
- * from a SAXParserFactory.</p>
- * </p>
- *
- * @see CatalogResolver
- * @see org.xml.sax.XMLFilter
- *
- * @author Norman Walsh
- * <a href="mailto:Norman.Walsh@Sun.COM">Norman.Walsh@Sun.COM</a>
- *
- * @version 1.0
- */
-public class ResolvingXMLFilter extends XMLFilterImpl {
- /**
- * Suppress explanatory message?
- *
- * @see #parse(InputSource)
- */
- private static boolean suppressExplanation = false;
-
- /** The manager for the underlying resolver. */
- CatalogManager catalogManager = CatalogManager.getStaticManager();
-
- /** The underlying catalog resolver. */
- private CatalogResolver catalogResolver = null;
-
- /** A separate resolver for oasis-xml-pi catalogs. */
- private CatalogResolver piCatalogResolver = null;
-
- /** Are we in the prolog? Is an oasis-xml-catalog PI valid now? */
- private boolean allowXMLCatalogPI = false;
-
- /** The base URI of the input document, if known. */
- private URL baseURL = null;
-
- /** Construct an empty XML Filter with no parent. */
- public ResolvingXMLFilter() {
- super();
- catalogResolver = new CatalogResolver(catalogManager);
- }
-
- /** Construct an XML filter with the specified parent. */
- public ResolvingXMLFilter(XMLReader parent) {
- super(parent);
- catalogResolver = new CatalogResolver(catalogManager);
- }
-
- /** Construct an XML filter with the specified parent. */
- public ResolvingXMLFilter(CatalogManager manager) {
- super();
- catalogManager = manager;
- catalogResolver = new CatalogResolver(catalogManager);
- }
-
- /** Construct an XML filter with the specified parent. */
- public ResolvingXMLFilter(XMLReader parent, CatalogManager manager) {
- super(parent);
- catalogManager = manager;
- catalogResolver = new CatalogResolver(catalogManager);
- }
-
- /**
- * Provide accessto the underlying Catalog.
- */
- public Catalog getCatalog() {
- return catalogResolver.getCatalog();
- }
-
- /**
- * SAX XMLReader API.
- *
- * <p>Note that the JAXP 1.1ea2 parser crashes with an InternalError if
- * it encounters a system identifier that appears to be a relative URI
- * that begins with a slash. For example, the declaration:</p>
- *
- * <pre>
- * <!DOCTYPE book SYSTEM "/path/to/dtd/on/my/system/docbookx.dtd">
- * </pre>
- *
- * <p>would cause such an error. As a convenience, this method catches
- * that error and prints an explanation. (Unfortunately, it's not possible
- * to identify the particular system identifier that causes the problem.)
- * </p>
- *
- * <p>The underlying error is forwarded after printing the explanatory
- * message. The message is only every printed once and if
- * <code>suppressExplanation</code> is set to <code>false</code> before
- * parsing, it will never be printed.</p>
- */
- public void parse(InputSource input)
- throws IOException, SAXException {
- allowXMLCatalogPI = true;
-
- setupBaseURI(input.getSystemId());
-
- try {
- super.parse(input);
- } catch (InternalError ie) {
- explain(input.getSystemId());
- throw ie;
- }
- }
-
- /** SAX XMLReader API.
- *
- * @see #parse(InputSource)
- */
- public void parse(String systemId)
- throws IOException, SAXException {
- allowXMLCatalogPI = true;
-
- setupBaseURI(systemId);
-
- try {
- super.parse(systemId);
- } catch (InternalError ie) {
- explain(systemId);
- throw ie;
- }
- }
-
- /**
- * Implements the <code>resolveEntity</code> method
- * for the SAX interface, using an underlying CatalogResolver
- * to do the real work.
- */
- public InputSource resolveEntity (String publicId, String systemId) {
- allowXMLCatalogPI = false;
- String resolved = catalogResolver.getResolvedEntity(publicId, systemId);
-
- if (resolved == null && piCatalogResolver != null) {
- resolved = piCatalogResolver.getResolvedEntity(publicId, systemId);
- }
-
- if (resolved != null) {
- try {
- InputSource iSource = new InputSource(resolved);
- iSource.setPublicId(publicId);
-
- // Ideally this method would not attempt to open the
- // InputStream, but there is a bug (in Xerces, at least)
- // that causes the parser to mistakenly open the wrong
- // system identifier if the returned InputSource does
- // not have a byteStream.
- //
- // It could be argued that we still shouldn't do this here,
- // but since the purpose of calling the entityResolver is
- // almost certainly to open the input stream, it seems to
- // do little harm.
- //
- URL url = new URL(resolved);
- InputStream iStream = url.openStream();
- iSource.setByteStream(iStream);
-
- return iSource;
- } catch (Exception e) {
- catalogManager.debug.message(1,
- "Failed to create InputSource ("
- + e.toString()
- + ")", resolved);
- return null;
- }
- } else {
- return null;
- }
- }
-
- /** SAX DTDHandler API.
- *
- * <p>Captured here only to detect the end of the prolog so that
- * we can ignore subsequent oasis-xml-catalog PIs. Otherwise
- * the events are just passed through.</p>
- */
- public void notationDecl (String name, String publicId, String systemId)
- throws SAXException {
- allowXMLCatalogPI = false;
- super.notationDecl(name,publicId,systemId);
- }
-
- /** SAX DTDHandler API.
- *
- * <p>Captured here only to detect the end of the prolog so that
- * we can ignore subsequent oasis-xml-catalog PIs. Otherwise
- * the events are just passed through.</p>
- */
- public void unparsedEntityDecl (String name,
- String publicId,
- String systemId,
- String notationName)
- throws SAXException {
- allowXMLCatalogPI = false;
- super.unparsedEntityDecl (name, publicId, systemId, notationName);
- }
-
- /** SAX ContentHandler API.
- *
- * <p>Captured here only to detect the end of the prolog so that
- * we can ignore subsequent oasis-xml-catalog PIs. Otherwise
- * the events are just passed through.</p>
- */
- public void startElement (String uri, String localName, String qName,
- Attributes atts)
- throws SAXException {
- allowXMLCatalogPI = false;
- super.startElement(uri,localName,qName,atts);
- }
-
- /** SAX ContentHandler API.
- *
- * <p>Detect and use the oasis-xml-catalog PI if it occurs.</p>
- */
- public void processingInstruction(String target, String pidata)
- throws SAXException {
- if (target.equals("oasis-xml-catalog")) {
- URL catalog = null;
- String data = pidata;
-
- int pos = data.indexOf("catalog=");
- if (pos >= 0) {
- data = data.substring(pos+8);
- if (data.length() > 1) {
- String quote = data.substring(0,1);
- data = data.substring(1);
- pos = data.indexOf(quote);
- if (pos >= 0) {
- data = data.substring(0, pos);
- try {
- if (baseURL != null) {
- catalog = new URL(baseURL, data);
- } else {
- catalog = new URL(data);
- }
- } catch (MalformedURLException mue) {
- // nevermind
- }
- }
- }
- }
-
- if (allowXMLCatalogPI) {
- if (catalogManager.getAllowOasisXMLCatalogPI()) {
- catalogManager.debug.message(4,"oasis-xml-catalog PI", pidata);
-
- if (catalog != null) {
- try {
- catalogManager.debug.message(4,"oasis-xml-catalog", catalog.toString());
-
- if (piCatalogResolver == null) {
- piCatalogResolver = new CatalogResolver(true);
- }
-
- piCatalogResolver.getCatalog().parseCatalog(catalog.toString());
- } catch (Exception e) {
- catalogManager.debug.message(3, "Exception parsing oasis-xml-catalog: "
- + catalog.toString());
- }
- } else {
- catalogManager.debug.message(3, "PI oasis-xml-catalog unparseable: " + pidata);
- }
- } else {
- catalogManager.debug.message(4,"PI oasis-xml-catalog ignored: " + pidata);
- }
- } else {
- catalogManager.debug.message(3, "PI oasis-xml-catalog occurred in an invalid place: "
- + pidata);
- }
- } else {
- super.processingInstruction(target, pidata);
- }
- }
-
- /** Save the base URI of the document being parsed. */
- private void setupBaseURI(String systemId) {
- URL cwd = null;
-
- try {
- cwd = FileURL.makeURL("basename");
- } catch (MalformedURLException mue) {
- cwd = null;
- }
-
- try {
- baseURL = new URL(systemId);
- } catch (MalformedURLException mue) {
- if (cwd != null) {
- try {
- baseURL = new URL(cwd, systemId);
- } catch (MalformedURLException mue2) {
- // give up
- baseURL = null;
- }
- } else {
- // give up
- baseURL = null;
- }
- }
- }
-
- /** Provide one possible explanation for an InternalError. */
- private void explain(String systemId) {
- if (!suppressExplanation) {
- System.out.println("XMLReader probably encountered bad URI in " + systemId);
- System.out.println("For example, replace '/some/uri' with 'file:/some/uri'.");
- }
- suppressExplanation = true;
- }
-}