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Diffstat (limited to 'libjava/gnu/xml/transform/XSLURIResolver.java')
| -rw-r--r-- | libjava/gnu/xml/transform/XSLURIResolver.java | 269 |
1 files changed, 0 insertions, 269 deletions
diff --git a/libjava/gnu/xml/transform/XSLURIResolver.java b/libjava/gnu/xml/transform/XSLURIResolver.java deleted file mode 100644 index 2e4e6545a87..00000000000 --- a/libjava/gnu/xml/transform/XSLURIResolver.java +++ /dev/null @@ -1,269 +0,0 @@ -/* XSLURIResolver.java -- - Copyright (C) 2004 Free Software Foundation, Inc. - -This file is part of GNU Classpath. - -GNU Classpath is free software; you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation; either version 2, or (at your option) -any later version. - -GNU Classpath 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 for more details. - -You should have received a copy of the GNU General Public License -along with GNU Classpath; see the file COPYING. If not, write to the -Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301 USA. - -Linking this library statically or dynamically with other modules is -making a combined work based on this library. Thus, the terms and -conditions of the GNU General Public License cover the whole -combination. - -As a special exception, the copyright holders of this library give you -permission to link this library with independent modules to produce an -executable, regardless of the license terms of these independent -modules, and to copy and distribute the resulting executable under -terms of your choice, provided that you also meet, for each linked -independent module, the terms and conditions of the license of that -module. An independent module is a module which is not derived from -or based on this library. If you modify this library, you may extend -this exception to your version of the library, but you are not -obligated to do so. If you do not wish to do so, delete this -exception statement from your version. */ - -package gnu.xml.transform; - -import java.io.File; -import java.io.InputStream; -import java.io.IOException; -import java.io.Reader; -import java.net.MalformedURLException; -import java.net.URL; -import java.net.URLConnection; -import java.util.HashMap; -import java.util.Map; -import javax.xml.parsers.DocumentBuilder; -import javax.xml.parsers.DocumentBuilderFactory; -import javax.xml.transform.ErrorListener; -import javax.xml.transform.Source; -import javax.xml.transform.TransformerException; -import javax.xml.transform.URIResolver; -import javax.xml.transform.dom.DOMSource; -import javax.xml.transform.stream.StreamSource; -import org.w3c.dom.Node; -import org.xml.sax.InputSource; -import org.xml.sax.SAXException; -import gnu.xml.dom.ls.ReaderInputStream; - -/** - * URI resolver for XSLT. - * This resolver parses external entities into DOMSources. It - * maintains a cache of URIs to DOMSources to avoid expensive re-parsing. - * - * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> - */ -class XSLURIResolver - implements URIResolver -{ - - Map lastModifiedCache = new HashMap(); - Map nodeCache = new HashMap(); - DocumentBuilder builder; - URIResolver userResolver; - ErrorListener userListener; - - void setUserResolver(URIResolver userResolver) - { - this.userResolver = userResolver; - } - - void setUserListener(ErrorListener userListener) - { - this.userListener = userListener; - } - - /** - * Clear the cache. - */ - void flush() - { - lastModifiedCache.clear(); - nodeCache.clear(); - } - - public Source resolve(String href, String base) - throws TransformerException - { - Source source = null; - if (userResolver != null) - { - source = userResolver.resolve(base, href); - } - return resolveDOM(source, href, base); - } - - DOMSource resolveDOM(Source source, String base, String href) - throws TransformerException - { - if (source != null && source instanceof DOMSource) - { - return (DOMSource) source; - } - String systemId = (source == null) ? null : source.getSystemId(); - long lastModified = 0L, lastLastModified = 0L; - - try - { - URL url = resolveURL(systemId, base, href); - Node node = null; - InputStream in = null; - if (source instanceof StreamSource) - { - StreamSource ss = (StreamSource) source; - in = ss.getInputStream(); - if (in == null) - { - Reader reader = ss.getReader(); - if (reader != null) - { - in = new ReaderInputStream(reader); - } - } - } - if (in == null && url != null) - { - systemId = url.toString(); - node = (Node) nodeCache.get(systemId); - // Is the resource up to date? - URLConnection conn = url.openConnection(); - Long llm = (Long) lastModifiedCache.get(systemId); - if (llm != null) - { - lastLastModified = llm.longValue(); - conn.setIfModifiedSince(lastLastModified); - } - conn.connect(); - lastModified = conn.getLastModified(); - if (node != null && - lastModified > 0L && - lastModified <= lastLastModified) - { - // Resource unchanged - return new DOMSource(node, systemId); - } - else - { - // Resource new or modified - in = conn.getInputStream(); - nodeCache.put(systemId, node); - lastModifiedCache.put(systemId, new Long(lastModified)); - } - } - InputSource input = new InputSource(in); - input.setSystemId(systemId); - DocumentBuilder builder = getDocumentBuilder(); - node = builder.parse(input); - return new DOMSource(node, systemId); - } - catch (IOException e) - { - throw new TransformerException(e); - } - catch (SAXException e) - { - throw new TransformerException(e); - } - } - - URL resolveURL(String systemId, String base, String href) - throws IOException - { - URL url = null; - try - { - if (systemId != null) - { - try - { - url = new URL(systemId); - } - catch (MalformedURLException e) - { - // Try building from base + href - } - } - if (url == null) - { - if (base != null) - { - URL baseURL = new URL(base); - url = new URL(baseURL, href); - } - else if (href != null) - { - url = new URL(href); - } - } - return url; - } - catch (MalformedURLException e) - { - // Fall back to local filesystem - File file = null; - if (href == null) - { - href = systemId; - } - if (base != null) - { - int lsi = base.lastIndexOf(File.separatorChar); - if (lsi != -1 && lsi < base.length() - 1) - { - base = base.substring(0, lsi); - } - File baseFile = new File(base); - file = new File(baseFile, href); - } - else if (href != null) - { - file = new File(href); - } - return (file == null) ? null : file.toURL(); - } - } - - DocumentBuilder getDocumentBuilder() - throws TransformerException - { - try - { - if (builder == null) - { - DocumentBuilderFactory factory = - DocumentBuilderFactory.newInstance(); - factory.setNamespaceAware(true); - factory.setExpandEntityReferences(true); - builder = factory.newDocumentBuilder(); - } - if (userResolver != null) - { - builder.setEntityResolver(new URIResolverEntityResolver(userResolver)); - } - if (userListener != null) - { - builder.setErrorHandler(new ErrorListenerErrorHandler(userListener)); - } - return builder; - } - catch (Exception e) - { - throw new TransformerException(e); - } - } - -} - |
