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xml-commons Resolver Source Code Files
xml-commons Resolver Source Code Files are provided in the source package file, xml-commons-resolver-1.2-fyi.zip.
You can download xml-commons-resolver-1.2-fyi.zip as described in the previous tutorial and go to the "src/" sub-folder to view Source Code files.
You can also browse xml-commons Resolver Source Code files below:
✍: FYIcenter
⏎ org/apache/xml/resolver/helpers/BootstrapResolver.java
// BootstrapResolver.java - Resolve entities and URIs internally /* * 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 org.apache.xml.resolver.helpers; import java.util.Hashtable; import java.net.URL; import java.net.MalformedURLException; import java.io.InputStream; import javax.xml.transform.URIResolver; import javax.xml.transform.Source; import javax.xml.transform.sax.SAXSource; import javax.xml.transform.TransformerException; import org.xml.sax.EntityResolver; import org.xml.sax.InputSource; /** * A simple bootstrapping resolver. * * <p>This class is used as the entity resolver when reading XML Catalogs. * It searches for the OASIS XML Catalog DTD, Relax NG Grammar and W3C XML Schema * as resources (e.g., in the resolver jar file).</p> * * <p>If you have your own DTDs or schemas, you can extend this class and * set the BootstrapResolver in your CatalogManager.</p> * * @see org.apache.xml.resolver.CatalogManager * * @author Norman Walsh * <a href="mailto:Norman.Walsh@Sun.COM">Norman.Walsh@Sun.COM</a> * * @version 1.0 */ public class BootstrapResolver implements EntityResolver, URIResolver { /** URI of the W3C XML Schema for OASIS XML Catalog files. */ public static final String xmlCatalogXSD = "http://www.oasis-open.org/committees/entity/release/1.0/catalog.xsd"; /** URI of the RELAX NG Grammar for OASIS XML Catalog files. */ public static final String xmlCatalogRNG = "http://www.oasis-open.org/committees/entity/release/1.0/catalog.rng"; /** Public identifier for OASIS XML Catalog files. */ public static final String xmlCatalogPubId = "-//OASIS//DTD XML Catalogs V1.0//EN"; /** System identifier for OASIS XML Catalog files. */ public static final String xmlCatalogSysId = "http://www.oasis-open.org/committees/entity/release/1.0/catalog.dtd"; /** Public identifier for legacy Apache XCatalog files. There is no official system identifier for XCatalog files. */ public static final String xCatalogPubId = "-//DTD XCatalog//EN"; /** Private hash used for public identifiers. */ private Hashtable publicMap = new Hashtable(); /** Private hash used for system identifiers. */ private Hashtable systemMap = new Hashtable(); /** Private hash used for URIs. */ private Hashtable uriMap = new Hashtable(); /** Constructor. */ public BootstrapResolver() { URL url = this.getClass().getResource("/org/apache/xml/resolver/etc/catalog.dtd"); if (url != null) { publicMap.put(xmlCatalogPubId, url.toString()); systemMap.put(xmlCatalogSysId, url.toString()); } url = this.getClass().getResource("/org/apache/xml/resolver/etc/catalog.rng"); if (url != null) { uriMap.put(xmlCatalogRNG, url.toString()); } url = this.getClass().getResource("/org/apache/xml/resolver/etc/catalog.xsd"); if (url != null) { uriMap.put(xmlCatalogXSD, url.toString()); } url = this.getClass().getResource("/org/apache/xml/resolver/etc/xcatalog.dtd"); if (url != null) { publicMap.put(xCatalogPubId, url.toString()); } } /** SAX resolveEntity API. */ public InputSource resolveEntity (String publicId, String systemId) { String resolved = null; if (systemId != null && systemMap.containsKey(systemId)) { resolved = (String) systemMap.get(systemId); } else if (publicId != null && publicMap.containsKey(publicId)) { resolved = (String) publicMap.get(publicId); } 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) { // FIXME: silently fail? return null; } } return null; } /** Transformer resolve API. */ public Source resolve(String href, String base) throws TransformerException { String uri = href; String fragment = null; int hashPos = href.indexOf("#"); if (hashPos >= 0) { uri = href.substring(0, hashPos); fragment = href.substring(hashPos+1); } String result = null; if (href != null && uriMap.containsKey(href)) { result = (String) uriMap.get(href); } if (result == null) { try { URL url = null; if (base==null) { url = new URL(uri); result = url.toString(); } else { URL baseURL = new URL(base); url = (href.length()==0 ? baseURL : new URL(baseURL, uri)); result = url.toString(); } } catch (java.net.MalformedURLException mue) { // try to make an absolute URI from the current base String absBase = makeAbsolute(base); if (!absBase.equals(base)) { // don't bother if the absBase isn't different! return resolve(href, absBase); } else { throw new TransformerException("Malformed URL " + href + "(base " + base + ")", mue); } } } SAXSource source = new SAXSource(); source.setInputSource(new InputSource(result)); return source; } /** Attempt to construct an absolute URI */ private String makeAbsolute(String uri) { if (uri == null) { uri = ""; } try { URL url = new URL(uri); return url.toString(); } catch (MalformedURLException mue) { try { URL fileURL = FileURL.makeURL(uri); return fileURL.toString(); } catch (MalformedURLException mue2) { // bail return uri; } } } }
⏎ org/apache/xml/resolver/helpers/BootstrapResolver.java
Or download all of them as a single archive file:
File name: xml-commons-resolver-1.2-fyi.zip File size: 101319 bytes Release date: 2006-11-20 Download
⇒ FAQ for Apache Xerces XML Parser
⇐ What Is in xml-commons-resolver-1.2.zip
2016-06-15, 24546👍, 1💬
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