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Diffstat (limited to 'libjava/classpath/gnu/xml/transform/TransformerFactoryImpl.java')
| -rw-r--r-- | libjava/classpath/gnu/xml/transform/TransformerFactoryImpl.java | 438 |
1 files changed, 438 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/xml/transform/TransformerFactoryImpl.java b/libjava/classpath/gnu/xml/transform/TransformerFactoryImpl.java new file mode 100644 index 000000000..972e8a282 --- /dev/null +++ b/libjava/classpath/gnu/xml/transform/TransformerFactoryImpl.java @@ -0,0 +1,438 @@ +/* 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.sax.SAXTransformerFactory; +import javax.xml.transform.sax.TemplatesHandler; +import javax.xml.transform.sax.TransformerHandler; +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 org.xml.sax.XMLFilter; +import gnu.xml.dom.DomDocument; + +/** + * GNU transformer factory implementation. + * + * @author <a href='mailto:dog@gnu.org'>Chris Burdess</a> + */ +public class TransformerFactoryImpl + extends SAXTransformerFactory +{ + + 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) || + SAXTransformerFactory.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; + } + + // -- SAXTransformerFactory -- + + public TemplatesHandler newTemplatesHandler() + throws TransformerConfigurationException + { + return new SAXTemplatesHandler(this); + } + + public TransformerHandler newTransformerHandler() + throws TransformerConfigurationException + { + Transformer transformer = newTransformer(); + return new SAXTransformerHandler(this, transformer); + } + + public TransformerHandler newTransformerHandler(Source source) + throws TransformerConfigurationException + { + Transformer transformer = newTransformer(source); + return new SAXTransformerHandler(this, transformer); + } + + public TransformerHandler newTransformerHandler(Templates templates) + throws TransformerConfigurationException + { + Transformer transformer = templates.newTransformer(); + return new SAXTransformerHandler(this, transformer); + } + + public XMLFilter newXMLFilter(Source source) + throws TransformerConfigurationException + { + throw new UnsupportedOperationException(); + } + + public XMLFilter newXMLFilter(Templates templates) + throws TransformerConfigurationException + { + throw new UnsupportedOperationException(); + } + + // -- SAXTransformerFactory end -- + + /** + * 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(); + } + } + +} |