+++ /dev/null
-/* Copyright (C) 2001, HELM Team
- *
- * This file is part of UWOBO, developed at the Computer Science
- * Department, University of Bologna, Italy.
- *
- * UWOBO 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
- * of the License, or (at your option) any later version.
- *
- * UWOBO 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 UWOBO; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston,
- * MA 02111-1307, USA.
- *
- * For details, see the UWOBO World-Wide-Web page,
- * http://cs.unibo.it/helm/uwobo
- */
-
-package it.unibo.cs.helm.uwobo;
-
-import java.io.*;
-import java.net.URL;
-import java.util.*;
-import javax.xml.transform.*;
-import javax.xml.transform.sax.*;
-import javax.xml.transform.stream.*;
-import org.apache.xalan.serialize.*;
-import org.apache.xalan.xslt.*;
-import org.apache.xalan.templates.*;
-import org.apache.xalan.transformer.*;
-import org.apache.xerces.parsers.*;
-import org.xml.sax.*;
-import org.xml.sax.ext.*;
-import org.xml.sax.helpers.*;
-
-/**
-// This file is part of UWOBO, a small and simple XSLT server.
-//
-// UWOBO 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
-// of the License, or (at your option) any later version.
-//
-// UWOBO 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 UWOBO; if not, write to the Free Software
-// Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-//
-// For details, send a mail to <luca.padovani@cs.unibo.it>
-* @author Luca Padovani, Riccardo Solmi
-*/
-
-public class Server {
- private static class Style implements Serializable {
- public String fileName;
- public Templates stylesheet;
- };
-
- public static final String SERVERNAME = "uwobo-XSLT-server";
- public static final String PACKAGE;
- public static final String VERSION;
- public static final String DATE;
- public static final String TIME;
- public static final String SERIALIZATION_DIR;
-
- static {
- Properties props = new Properties();
- try {
- InputStream in = Server.class.getResourceAsStream("properties.txt");
- props.load(in);
- in.close();
- } catch (IOException ioe) {
- System.err.println("Could not load the version information.");
- }
-
- PACKAGE = props.getProperty("PACKAGE");
- VERSION = props.getProperty("VERSION");
- DATE = props.getProperty("DATE");
- TIME = props.getProperty("TIME");
- SERIALIZATION_DIR = props.getProperty("SERIALIZATION_DIR");
- }
-
- Server() {
- if(!SERIALIZATION_DIR.equals("")) {
- log("Looking for serialized stylesheets");
- File [] serialized = new File(SERIALIZATION_DIR).listFiles();
- if (serialized == null) {
- log("Serialized stylesheets directory \"" + SERIALIZATION_DIR +
- "\" not found");
- } else {
- for (int i = 0; i < serialized.length ; i++) {
- File filename = serialized[i];
- String key = filename.getName();
- log("Found serialized stylesheet " + key);
- log("Reloading serialized stylesheet \"" + filename + "\"... ");
- FileInputStream istream;
- try {
- istream = new FileInputStream(filename);
- ObjectInputStream p = new ObjectInputStream(istream);
- Style style = (Style)p.readObject();
- istream.close();
- hashMap.put(key, style);
- } catch (Exception e) {log(e.toString());};
- }
- log("Serialized stylesheets loaded!");
- }
- } else
- log("Stylesheet serialization is off. Set the property SERIALIZATION_DIR to a non-empty value to turn it on.");
-
- }
-
- private final HashMap hashMap = new HashMap();
- private static int logCounter = 0;
-
- private final String compileStylesheet(Style style, String key) throws TransformerConfigurationException, SAXException, IOException {
- StreamSource streamsource =
- new StreamSource(new URL(style.fileName).openStream());
- streamsource.setSystemId(style.fileName);
- Templates templates =
- ((SAXTransformerFactory)TransformerFactory.newInstance())
- .newTemplates(streamsource);
- style.stylesheet = templates;
- File serializationFile = new File(SERIALIZATION_DIR,key);
- String res = "";
- if(!SERIALIZATION_DIR.equals("")) {
- try {
- FileOutputStream ostream =
- new FileOutputStream(serializationFile);
- ObjectOutputStream p = new ObjectOutputStream(ostream);
- p.writeObject(style);
- p.flush();
- ostream.close();
- res =
- "Stylesheet serialized in \"" + serializationFile + "\"";
- log(res);
- } catch (FileNotFoundException e) {
- res = "Warning: Stylesheet not " +
- "serialized. Error opening " + "file \"" +
- serializationFile + "\"";
- log(res);
- res = htmlOfWarning(res);
- }
- }
- return res;
- }
-
- private String getContentType(Templates templates) {
- final Properties oprops = templates.getOutputProperties();
- final String encoding = oprops.getProperty(OutputKeys.ENCODING);
- final String media = oprops.getProperty(OutputKeys.MEDIA_TYPE);
-
- if (media != null) {
- if (encoding != null)
- return media + "; charset=" + encoding;
- return media;
- } else {
- final String method = oprops.getProperty(OutputKeys.METHOD);
- if (method.equals("html"))
- return "text/html";
- else if (method.equals("text"))
- return "text/plain";
- else
- return "text/xml";
- }
- }
-
- private final ContentHandler applyStylesheet(Templates stylesheet, HashMap params, ContentHandler saxOutput)
- throws TransformerConfigurationException, SAXException
- {
- TransformerHandler th = ((SAXTransformerFactory)TransformerFactory.newInstance()).newTransformerHandler(stylesheet);
-
- th.setResult(new SAXResult(saxOutput));
-
- if (params != null) {
- final Transformer transformer = th.getTransformer();
- Iterator i = params.keySet().iterator();
- while (i.hasNext()) {
- final String name = (String) i.next();
- final String value = (String) params.get(name);
- transformer.setParameter(name, value);
- }
- }
-
- return th;
- }
-
- private final void parseFile(String datasheet, ContentHandler saxOutput) throws SAXException, IOException, Exception {
- final XMLReader reader = XMLReaderFactory.createXMLReader("org.apache.xerces.parsers.SAXParser");
- reader.setFeature("http://xml.org/sax/features/namespaces", true);
- reader.setFeature("http://xml.org/sax/features/namespace-prefixes", true);
- reader.setContentHandler(saxOutput);
- if (saxOutput instanceof LexicalHandler)
- reader.setProperty("http://xml.org/sax/properties/lexical-handler", (LexicalHandler)saxOutput);
- reader.parse(datasheet);
- }
-
- private final ContentHandler saveFile(OutputStream outputStream, Properties props) throws IOException {
- final Serializer ser = SerializerFactory.getSerializer(props);
- ser.setOutputStream(outputStream);
- return ser.asContentHandler();
- }
-
- public static void log(String msg) {
- System.err.println(SERVERNAME + "[" + logCounter++ + "]: " + msg);
- }
-
- public String add(String filename, String key) throws TransformerConfigurationException, SAXException, IOException {
- log("processing stylesheet \"" + filename + "\" using key " + key + "... ");
- if (hashMap.containsKey(key)) {
- Style style = (Style)hashMap.get(key);
- if (style.fileName.equals(filename)) {
- String msg =
- "Warning: Stylesheet already loaded. Request ignored.";
- log(msg);
- return htmlOfWarning(msg);
- } else {
- String res =
- "Error: There is already a stylesheet with keyword \""+
- key + "\" (aborted)";
- log(res);
- return htmlOfError(res);
- }
- }
-
- Style style = new Style();
- style.fileName = filename;
- String res = compileStylesheet(style,key);
- log("done!");
-
- hashMap.put(key, style);
- return res;
- }
-
- public ArrayList removeAll() throws TransformerConfigurationException, SAXException, IOException {
- ArrayList res = new ArrayList();
- String log = "";
- Iterator i = hashMap.keySet().iterator();
- while (i.hasNext()) {
- String key = (String)i.next();
- Style style = (Style)hashMap.get(key);
- String msg =
- "removing \"" + key + " (" + style.fileName + ")";
- res.add(msg);
- log(msg);
- msg = partialRemove(key,false);
- if(!msg.equals(""))
- res.add(msg);
- }
- hashMap.clear();
- return res;
- }
-
- private String partialRemove(String key, boolean removeFromHashTable) {
- String res = "";
- Style style = (Style)hashMap.get(key);
- if (style != null) {
- log("removing \"" + key + " (" + style.fileName + ")");
- if (removeFromHashTable)
- hashMap.remove(key);
- if(!SERIALIZATION_DIR.equals("")) {
- File to_delete = new File(SERIALIZATION_DIR,key);
- if (!to_delete.delete()) {
- res = "Warning: Serialized stylesheet \"" +
- to_delete + "\" to remove not found";
- log(res);
- res = htmlOfWarning(res);
- }
- }
- } else {
- res = "Error: stylesheet \"" + key + "\" not loaded";
- log(res);
- res = htmlOfError(res);
- }
- return res;
- }
-
- public String remove(String key) {
- return partialRemove(key,true);
- }
-
- public String getContentType(String key) {
- Style style = (Style)hashMap.get(key);
- if (style != null) {
- return getContentType(style.stylesheet);
- } else {
- log("Error, stylesheet \"" + key + "\" not loaded");
- return null;
- }
- }
-
- public List list() {
- log("listing stylesheets...");
- ArrayList l = new ArrayList();
- Iterator i = hashMap.keySet().iterator();
- while (i.hasNext()) {
- String key = (String)i.next();
- Style style = (Style)hashMap.get(key);
- l.add(" " + key + " (" + style.fileName + "; " + getContentType(style.stylesheet) + ")");
- System.out.println(" " + key + " (" + style.fileName + ")");
- }
- log("done!");
- return l;
- }
-
- private ContentHandler applyRec(final Key[] keys, int idx, final ContentHandler saxOutput)
- throws TransformerConfigurationException, SAXException, IOException
- {
- if (idx < 0)
- return saxOutput;
- else {
- final Style style = (Style) hashMap.get(keys[idx].name);
- if (style == null) {
- log("cannot apply unknwon stylesheet \"" + keys[idx].name + "\" (aborted)");
- return null;
- }
- return applyStylesheet(style.stylesheet, keys[idx].params, applyRec(keys, idx - 1, saxOutput));
- }
- }
-
- public void apply(String inFile, OutputStream outputStream, Key[] keys, Properties userProperties)
- throws IOException, TransformerConfigurationException, SAXException, Exception
- {
-/* File outFile = new File(outFilename);
- if (outFile.exists())
- System.out.println("Using cached version\n");
- else {
-*/
- final Key[] rkeys = new Key[keys.length];
- for (int i = 0; i < keys.length; i++)
- rkeys[i] = keys[keys.length - i - 1];
-
- Properties outputProperties;
- Properties defaultProperties;
- String method;
-
- if (keys.length > 0) {
- Style style = (Style) hashMap.get(rkeys[0].name);
- if (style == null) {
- log("Error, stylesheet \"" + rkeys[0].name + "\" not loaded");
- return;
- }
- outputProperties = style.stylesheet.getOutputProperties();
- method = userProperties.getProperty("method");
- if (method == null) method = outputProperties.getProperty("method");
- if (method == null) method = "xml";
- defaultProperties = org.apache.xalan.templates.OutputProperties.getDefaultMethodProperties(method);
- } else {
- method = userProperties.getProperty("method");
- if (method == null) method = "xml";
- outputProperties = org.apache.xalan.templates.OutputProperties.getDefaultMethodProperties(method);
- defaultProperties = outputProperties;
- }
-
- for (Enumeration e = userProperties.propertyNames(); e.hasMoreElements(); ) {
- String prop = (String) e.nextElement();
- String value = userProperties.getProperty(prop);
- if (value.equals("")) {
- String defaultValue = defaultProperties.getProperty(prop);
- if (defaultValue != null)
- outputProperties.setProperty(prop, defaultProperties.getProperty(prop));
- else
- outputProperties.remove(prop);
- } else {
- outputProperties.setProperty(prop, value);
- }
- }
-
- parseFile(inFile, applyRec(rkeys, rkeys.length - 1, saveFile(outputStream, outputProperties)));
-// }
- }
-
- public ArrayList reloadAll() throws TransformerConfigurationException, SAXException, IOException {
- ArrayList res = new ArrayList();
- Iterator i = hashMap.keySet().iterator();
- while (i.hasNext()) {
- String key = (String)i.next();
- Style style = (Style)hashMap.get(key);
- String msg =
- "reloading \"" + key + " (" + style.fileName + ")";
- res.add(msg);
- log(msg);
- msg = reload(key);
- if(!msg.equals(""))
- res.add(msg);
- }
- return res;
- }
-
- public String reload(String key) throws TransformerConfigurationException, SAXException, IOException {
- String res = "";
- Style style = (Style)hashMap.get(key);
- if (style != null) {
- log("reloading \"" + key + "\"... ");
- res= compileStylesheet(style,key);
- log("done!");
- } else {
- res = "Error: stylesheet \"" + key + "\" not loaded";
- log(res);
- res = htmlOfError(res);
- }
- return res;
- }
-
- private String htmlOfWarning(String message)
- {
- return "<b style=\"color: maroon\">" + message+"</b>";
- }
-
- private String htmlOfError(String message)
- {
- return "<b style=\"color: red\">" + message+"</b>";
- }
-}
projects / helm.git / blobdiff