| /* TransformerFactoryImpl.java -- |
| Copyright (C) 2004,2006 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.FileInputStream; |
| import java.io.FileOutputStream; |
| import java.io.InputStream; |
| import java.io.IOException; |
| import java.io.OutputStream; |
| import java.net.URL; |
| import java.util.Iterator; |
| import java.util.LinkedHashMap; |
| import java.util.LinkedList; |
| import java.util.Map; |
| import java.util.Properties; |
| import javax.xml.transform.ErrorListener; |
| import javax.xml.transform.Source; |
| import javax.xml.transform.Templates; |
| import javax.xml.transform.Transformer; |
| import javax.xml.transform.TransformerConfigurationException; |
| import javax.xml.transform.TransformerException; |
| import javax.xml.transform.TransformerFactory; |
| import javax.xml.transform.URIResolver; |
| import javax.xml.transform.dom.DOMResult; |
| import javax.xml.transform.dom.DOMSource; |
| import javax.xml.transform.sax.SAXResult; |
| import javax.xml.transform.sax.SAXSource; |
| import javax.xml.transform.stream.StreamResult; |
| import javax.xml.transform.stream.StreamSource; |
| import javax.xml.xpath.XPathFactory; |
| import org.w3c.dom.Document; |
| import org.w3c.dom.Node; |
| import gnu.xml.dom.DomDocument; |
| |
| /** |
| * GNU transformer factory implementation. |
| * |
| * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> |
| */ |
| public class TransformerFactoryImpl |
| extends TransformerFactory |
| { |
| |
| final XPathFactory xpathFactory; |
| final XSLURIResolver resolver; |
| ErrorListener userListener; |
| URIResolver userResolver; |
| |
| public TransformerFactoryImpl() |
| { |
| xpathFactory = new gnu.xml.xpath.XPathFactoryImpl(); |
| resolver = new XSLURIResolver(); |
| } |
| |
| public Transformer newTransformer(Source source) |
| throws TransformerConfigurationException |
| { |
| Stylesheet stylesheet = newStylesheet(source, 0, null); |
| Properties outputProperties = |
| new TransformerOutputProperties(stylesheet); |
| TransformerImpl transformer = |
| new TransformerImpl(this, stylesheet, outputProperties); |
| stylesheet.transformer = transformer; |
| return transformer; |
| } |
| |
| public Transformer newTransformer() |
| throws TransformerConfigurationException |
| { |
| return new TransformerImpl(this, null, new Properties()); |
| } |
| |
| public Templates newTemplates(Source source) |
| throws TransformerConfigurationException |
| { |
| Stylesheet stylesheet = newStylesheet(source, 0, null); |
| return new TemplatesImpl(this, stylesheet); |
| } |
| |
| Stylesheet newStylesheet(Source source, int precedence, Stylesheet parent) |
| throws TransformerConfigurationException |
| { |
| Document doc = null; |
| String systemId = null; |
| if (source != null) |
| { |
| try |
| { |
| DOMSource ds; |
| synchronized (resolver) |
| { |
| resolver.setUserResolver(userResolver); |
| resolver.setUserListener(userListener); |
| ds = resolver.resolveDOM(source, null, null); |
| } |
| Node node = ds.getNode(); |
| if (node == null) |
| { |
| throw new TransformerConfigurationException("no source document"); |
| } |
| doc = (node instanceof Document) ? (Document) node : |
| node.getOwnerDocument(); |
| systemId = ds.getSystemId(); |
| } |
| catch (TransformerException e) |
| { |
| throw new TransformerConfigurationException(e); |
| } |
| } |
| return new Stylesheet(this, parent, doc, systemId, precedence); |
| } |
| |
| public Source getAssociatedStylesheet(Source source, |
| String media, |
| String title, |
| String charset) |
| throws TransformerConfigurationException |
| { |
| try |
| { |
| DOMSource ds; |
| synchronized (resolver) |
| { |
| resolver.setUserResolver(userResolver); |
| resolver.setUserListener(userListener); |
| ds = resolver.resolveDOM(source, null, null); |
| } |
| Node node = ds.getNode(); |
| if (node == null) |
| { |
| throw new TransformerConfigurationException("no source document"); |
| } |
| Document doc = (node instanceof Document) ? (Document) node : |
| node.getOwnerDocument(); |
| LinkedList matches = new LinkedList(); |
| for (node = doc.getFirstChild(); |
| node != null; |
| node = node.getNextSibling()) |
| { |
| if (node.getNodeType() == Node.PROCESSING_INSTRUCTION_NODE && |
| "xml-stylesheet".equals(node.getNodeName())) |
| { |
| Map params = parseParameters(node.getNodeValue()); |
| if (media != null && !media.equals(params.get("media"))) |
| { |
| continue; |
| } |
| if (title != null && !title.equals(params.get("title"))) |
| { |
| continue; |
| } |
| if (charset != null && !charset.equals(params.get("charset"))) |
| { |
| continue; |
| } |
| String href = (String) params.get("href"); |
| URL url = resolver.resolveURL(null, node.getBaseURI(), href); |
| matches.add(url); |
| } |
| } |
| switch (matches.size()) |
| { |
| case 0: |
| return null; |
| case 1: |
| return new StreamSource(((URL) matches.getFirst()).toString()); |
| default: |
| // Create a source representing a stylesheet with a list of |
| // imports |
| DomDocument ssDoc = new DomDocument(); |
| ssDoc.setBuilding(true); |
| // Create document element |
| Node root = |
| ssDoc.createElementNS(Stylesheet.XSL_NS, "stylesheet"); |
| Node version = |
| ssDoc.createAttributeNS(null, "version"); |
| version.setNodeValue("1.0"); |
| root.getAttributes().setNamedItemNS(version); |
| ssDoc.appendChild(root); |
| // Create xsl:import for each URL |
| for (Iterator i = matches.iterator(); i.hasNext(); ) |
| { |
| URL url = (URL) i.next(); |
| Node imp = |
| ssDoc.createElementNS(Stylesheet.XSL_NS, "import"); |
| Node href = |
| ssDoc.createAttributeNS(null, "href"); |
| href.setNodeValue(url.toString()); |
| imp.getAttributes().setNamedItemNS(href); |
| root.appendChild(imp); |
| } |
| ssDoc.setBuilding(false); |
| return new DOMSource(ssDoc); |
| } |
| } |
| catch (IOException e) |
| { |
| throw new TransformerConfigurationException(e); |
| } |
| catch (TransformerException e) |
| { |
| throw new TransformerConfigurationException(e); |
| } |
| } |
| |
| Map parseParameters(String data) |
| { |
| Map ret = new LinkedHashMap(); |
| int len = data.length(); |
| String key = null; |
| int start = 0; |
| char quoteChar = '\u0000'; |
| for (int i = 0; i < len; i++) |
| { |
| char c = data.charAt(i); |
| if (quoteChar == '\u0000' && c == ' ') |
| { |
| if (key == null && start < i) |
| { |
| key = data.substring(start, i); |
| } |
| else |
| { |
| String val = unquote(data.substring(start, i).trim()); |
| ret.put(key, val); |
| key = null; |
| } |
| start = i + 1; |
| } |
| else if (c == '"') |
| { |
| quoteChar = (quoteChar == c) ? '\u0000' : c; |
| } |
| else if (c == '\'') |
| { |
| quoteChar = (quoteChar == c) ? '\u0000' : c; |
| } |
| } |
| if (start < len && key != null) |
| { |
| String val = unquote(data.substring(start, len).trim()); |
| ret.put(key, val); |
| } |
| return ret; |
| } |
| |
| String unquote(String text) |
| { |
| int end = text.length() - 1; |
| if (text.charAt(0) == '\'' && text.charAt(end) == '\'') |
| { |
| return text.substring(1, end); |
| } |
| if (text.charAt(0) == '"' && text.charAt(end) == '"') |
| { |
| return text.substring(1, end); |
| } |
| return text; |
| } |
| |
| public void setURIResolver(URIResolver resolver) |
| { |
| userResolver = resolver; |
| } |
| |
| public URIResolver getURIResolver() |
| { |
| return userResolver; |
| } |
| |
| public void setFeature(String name, boolean value) |
| throws TransformerConfigurationException |
| { |
| throw new TransformerConfigurationException("not supported"); |
| } |
| |
| public boolean getFeature(String name) |
| { |
| if (SAXSource.FEATURE.equals(name) || |
| SAXResult.FEATURE.equals(name) || |
| StreamSource.FEATURE.equals(name) || |
| StreamResult.FEATURE.equals(name) || |
| DOMSource.FEATURE.equals(name) || |
| DOMResult.FEATURE.equals(name)) |
| { |
| return true; |
| } |
| return false; |
| } |
| |
| public void setAttribute(String name, Object value) |
| throws IllegalArgumentException |
| { |
| throw new IllegalArgumentException("not supported"); |
| } |
| |
| public Object getAttribute(String name) |
| throws IllegalArgumentException |
| { |
| throw new IllegalArgumentException("not supported"); |
| } |
| |
| public void setErrorListener(ErrorListener listener) |
| throws IllegalArgumentException |
| { |
| userListener = listener; |
| } |
| |
| public ErrorListener getErrorListener() |
| { |
| return userListener; |
| } |
| |
| /** |
| * Syntax: TransformerFactoryImpl [<stylesheet> [<input> [<output>]]] |
| */ |
| public static void main(String[] args) |
| throws Exception |
| { |
| InputStream stylesheet = null, in = null; |
| OutputStream out = null; |
| try |
| { |
| if (args.length > 0) |
| { |
| stylesheet = new FileInputStream(args[0]); |
| if (args.length > 1) |
| { |
| in = new FileInputStream(args[1]); |
| if (args.length > 2) |
| out = new FileOutputStream(args[2]); |
| } |
| } |
| if (in == null) |
| in = System.in; |
| if (out == null) |
| out = System.out; |
| TransformerFactory f = new TransformerFactoryImpl(); |
| Transformer t = (stylesheet != null) ? |
| f.newTransformer(new StreamSource(stylesheet)) : |
| f.newTransformer(); |
| t.transform(new StreamSource(in), new StreamResult(out)); |
| } |
| finally |
| { |
| if (stylesheet != null) |
| stylesheet.close(); |
| if (in != null && in instanceof FileInputStream) |
| in.close(); |
| if (out != null && out instanceof FileOutputStream) |
| out.close(); |
| } |
| } |
| |
| } |