From b891e0efda6c3407d3dc861af1315a3f1309cd26 Mon Sep 17 00:00:00 2001
From: Claudio Sacerdoti Coen <claudio.sacerdoticoen@unibo.it>
Date: Tue, 6 Nov 2001 12:35:51 +0000
Subject: [PATCH] Commit of Ferruccio changes: * New syntax: every method now
 accepts a list of inputs * Small bug fixes

---
 helm/uwobo/build.xml                          |   8 +-
 .../src/it/unibo/cs/helm/uwobo/Server.java    |  42 +-
 .../src/it/unibo/cs/helm/uwobo/Servlet.java   | 456 ++++++++++--------
 3 files changed, 299 insertions(+), 207 deletions(-)

diff --git a/helm/uwobo/build.xml b/helm/uwobo/build.xml
index c021b0b46..de9d59a87 100644
--- a/helm/uwobo/build.xml
+++ b/helm/uwobo/build.xml
@@ -4,7 +4,7 @@
 
 	<property name="Name" value="Uwobo"/>
 	<property name="name" value="uwobo"/>
-	<property name="version" value="1.1.12"/>
+	<property name="version" value="1.1.14beta"/>
 
 	<property file=".${name}.properties" />
 	<property file="${user.home}/.${name}.properties" />
@@ -133,9 +133,13 @@
 		<copy todir="${dist.dir}/lib" >
 			<fileset dir="${lib.dir}" />
 		</copy>
+                <!-- CSC: next line needed only if docs is empty -->
+		<mkdir dir="${docs.dir}"/>
 		<copy todir="${dist.dir}/docs" >
 			<fileset dir="${docs.dir}" />
 		</copy>
+                <!-- CSC: next line needed only if resources is empty -->
+		<mkdir dir="resources"/>
 		<copy todir="${dist.dir}/resources" >
 			<fileset dir="resources" />
 		</copy>
@@ -151,6 +155,7 @@
 	</target>
 
 	<target name="dist-zip" depends="dist">
+		<mkdir dir="backup"/>
 		<zip zipfile="backup/${Name}-${version}.zip" basedir="${dist.dir}" includes="**" />
 	</target>
 
@@ -159,6 +164,7 @@
 	</target>
 
 	<target name="dist-tgz" depends="dist">
+		<mkdir dir="backup"/>
 		<move todir="${name}">
 			<fileset dir="${dist.dir}"/>
 		</move>
diff --git a/helm/uwobo/src/it/unibo/cs/helm/uwobo/Server.java b/helm/uwobo/src/it/unibo/cs/helm/uwobo/Server.java
index da11a070c..cd2f2fa30 100644
--- a/helm/uwobo/src/it/unibo/cs/helm/uwobo/Server.java
+++ b/helm/uwobo/src/it/unibo/cs/helm/uwobo/Server.java
@@ -152,7 +152,8 @@ public class Server {
 		hashMap.put(key, style);
 	}
 
-	public void removeAll() throws TransformerConfigurationException, SAXException, IOException {
+	public void removeAll() 
+        {
 		String key;
 		Style style;
 		Iterator i = hashMap.keySet().iterator();
@@ -212,9 +213,9 @@ public class Server {
 			return applyStylesheet(style.stylesheet, keys[idx].params, applyRec(keys, idx - 1, saxOutput));
 		}
 	}
-
+//FileNotFoundException
 	public void apply(String inFile, OutputStream outputStream, Key[] keys, Properties userProperties)
-	throws FileNotFoundException, IOException, TransformerConfigurationException, SAXException, Exception
+	throws IOException, TransformerConfigurationException, SAXException, Exception
 	{
 /*		File outFile = new File(outFilename);
 		if (outFile.exists())
@@ -273,11 +274,14 @@ public class Server {
 
 	public void reload(String key) throws TransformerConfigurationException, SAXException, IOException {
 		Style style = (Style)hashMap.get(key);
-
-		log("reloading \"" + key + "\"... ");
-		style.stylesheet = compileStylesheet(style.fileName);
-		style.lastModified = new File(style.fileName).lastModified();
-		log("done!");
+                if (style != null) {
+			log("reloading \"" + key + "\"... ");
+			style.stylesheet = compileStylesheet(style.fileName);
+			style.lastModified = new File(style.fileName).lastModified();
+			log("done!");
+		} else {
+			log("error, stylesheet \"" + key + "\" not loaded");
+		}
 	}
 
 	public void updateAll() throws TransformerConfigurationException, SAXException, IOException {
@@ -288,14 +292,18 @@ public class Server {
 
 	public void update(String key) throws TransformerConfigurationException, SAXException, IOException {
 		Style style = (Style)hashMap.get(key);
-
-		log("updating \"" + key + "\"... ");
-		File styleFile = new File(style.fileName);
-		if (styleFile.lastModified() > style.lastModified) {
-			style.stylesheet = compileStylesheet(style.fileName);
-			style.lastModified = styleFile.lastModified();
-			log("done!");
-		} else
-			log("\"" + key + "\" is up to date");
+                if (style != null) {
+			log("updating \"" + key + "\"... ");
+			File styleFile = new File(style.fileName);
+			if (styleFile.lastModified() > style.lastModified) {
+				style.stylesheet = compileStylesheet(style.fileName);
+				style.lastModified = styleFile.lastModified();
+				log("done!");
+			} else {
+				log("\"" + key + "\" is up to date");
+			}
+		} else {
+			log("error, stylesheet \"" + key + "\" not loaded");
+		}
 	}
 }
diff --git a/helm/uwobo/src/it/unibo/cs/helm/uwobo/Servlet.java b/helm/uwobo/src/it/unibo/cs/helm/uwobo/Servlet.java
index 0e28877fd..3b4766250 100644
--- a/helm/uwobo/src/it/unibo/cs/helm/uwobo/Servlet.java
+++ b/helm/uwobo/src/it/unibo/cs/helm/uwobo/Servlet.java
@@ -40,208 +40,286 @@ import org.xml.sax.*;
 * bugs:
 *	directory base stylesheet inclusi
 *
-* @author Riccardo Solmi
+* @author The HELM team
 */
 public class Servlet extends HttpServlet {
-	public static final String[] usage = {
-		"http://<i>hostname</i>/helm/servlet/uwobo/help",
-		"http://<i>hostname</i>/helm/servlet/uwobo/add?xsluri=<i>stylesheet</i>&key=<i>name</i>",
-		"http://<i>hostname</i>/helm/servlet/uwobo/remove[?key=<i>name</i>]",
-		"http://<i>hostname</i>/helm/servlet/uwobo/list",
-		"http://<i>hostname</i>/helm/servlet/uwobo/reload[?key=<i>name</i>]",
-		"http://<i>hostname</i>/helm/servlet/uwobo/update[?key=<i>name</i>]",
-		"http://<i>hostname</i>/helm/servlet/uwobo/apply?xmluri=<i>xmldata</i>&keys=<i>key_1,...,key_n</i>[&param.<i>name</i>=<i>value</i>]*"
-	};
-	public static final String help;
-	
-	static {
-		StringBuffer sb = new StringBuffer();
-		sb.append("<ul>");
-		for (int i=0; i<usage.length; i++)
-			sb.append("<li>").append(usage[i]).append("</li>");
-		sb.append("</ul>");
-		help = sb.toString();
-	}
+   
+   public static final String[] usage = {
+      "http://<i>hostname</i>/helm/servlet/uwobo/help",
+      "http://<i>hostname</i>/helm/servlet/uwobo/add?key=<i>key</i>,<i>stylesheet</i>[&key=<i>key</i>,<i>stylesheet</i>]*",
+      "http://<i>hostname</i>/helm/servlet/uwobo/remove[?keys=<i>key_1,...,key_n</i>]",
+      "http://<i>hostname</i>/helm/servlet/uwobo/list",
+      "http://<i>hostname</i>/helm/servlet/uwobo/reload[?keys=<i>key_1,...,key_n</i>]",
+      "http://<i>hostname</i>/helm/servlet/uwobo/update[?keys=<i>key_1,...,key_n</i>]",
+      "http://<i>hostname</i>/helm/servlet/uwobo/apply?xmluri=<i>xmldata</i>&keys=<i>key_1,...,key_n</i>[&param.<i>name</i>=<i>value</i>]*[&param.<i>key</i>.<i>name</i>=<i>value</i>]*[&prop.<i>name</i>=[<i>value</i>]]*"
+   };
+   public static final String help;
+	   
+   static {
+      StringBuffer sb = new StringBuffer();
+      sb.append("<ul>");
+      for (int i=0; i<usage.length; i++)
+         sb.append("<li>").append(usage[i]).append("</li>");
+      sb.append("</ul>");
+      help = sb.toString();
+   }
 
-	private Server server;
+   private Server server;
 
-	public void init(ServletConfig config) throws ServletException
-	{
-		super.init(config);
+   public void init(ServletConfig config)
+   throws ServletException
+   {
+      super.init(config);
 
-		System.out.println("UWOBO init");
-		server = new Server();
-	}
+      System.out.println("UWOBO init");
+      server = new Server();
+   }
 
-	public static String[] split(final String s, final String delim)
-	{
-		StringTokenizer st = new StringTokenizer(s, delim);
-		String[] res = new String[st.countTokens()];
-		for (int i = 0; i < res.length; i++) res[i] = st.nextToken();
-		return res;
-	}
+   private static String[] split(final String s, final String delim)
+   {
+      String[] res = {null}; 
+      if (s == null) return res;
+      StringTokenizer st = new StringTokenizer(s, delim);
+      res = new String[st.countTokens()];
+      for (int i = 0; i < res.length; i++) res[i] = st.nextToken();
+      return res;
+   }
 	
-	public void doGet(HttpServletRequest request, HttpServletResponse response)
-	throws ServletException, IOException
-	{
-		System.out.println("UWOBO "+request.getPathInfo());
-		ServletOutputStream out;
-
-		try {
-			final String cmd = request.getPathInfo();
-			if (cmd == null) {
-				sendError(response, HttpServletResponse.SC_NOT_FOUND, "unknown command", help);
-				return;
-			}
-			if (cmd.equals("/add")) {
-				final String filename = request.getParameter("xsluri");
-				if (filename == null) {
-					sendError(response, HttpServletResponse.SC_BAD_REQUEST, "bad parameters", usage[1]);
-					return;
-				}
-				final String key = request.getParameter("key");
-				server.add(filename, key);
-			} else if (cmd.equals("/apply")) {
-				final String infile = request.getParameter("xmluri");
-				final String keys = request.getParameter("keys");
+   private static String[] split2(final String s, final String delim)
+   {
+      String[] res = new String[2];
+      StringTokenizer st = new StringTokenizer(s);
+      res[0] = st.nextToken(delim); res[1] = st.nextToken("").substring(1);
+      return res;
+   }
 
-				if (infile == null || keys == null) {
-					sendError(response, HttpServletResponse.SC_BAD_REQUEST, "bad parameters", usage[6]);
-					return;
-				}
+   private void html_open(HttpServletResponse resp, ServletOutputStream out)
+   throws IOException
+   {  
+      resp.setContentType("text/html");
+      out.println("<html><body bgcolor=\"#ffffff\"><h1>Uwobo servlet</h1>");
+   }
+   
+   private void html_close(ServletOutputStream out)
+   throws IOException
+   {
+      out.println("<p>done</p></body></html>");
+      out.close();
+   }
 
-				final String[] keyName = split(keys, ",");
-				final Key[] keySeq = new Key[keyName.length];
-				for (int i = 0; i < keySeq.length; i++) {
-					keySeq[i] = new Key();
-					keySeq[i].name = keyName[i];
-					keySeq[i].params = new HashMap();
-				}
+   private String msg_out(String message)
+   {
+      return message+"<br>";
+   }
+   
+   private String exc_out(String message, Exception e)
+   {
+      if (message == null)
+      {
+	 message = e.getClass().getName();
+	 message = message.substring(message.lastIndexOf('.')+1);
+      }
+      String local = e.getLocalizedMessage();
+      local = local.substring(local.lastIndexOf(':')+1);
+      return "<b>"+message+": "+local+"</b><br>";
+   }
+   
+   public void doGet(HttpServletRequest request, HttpServletResponse response)
+   throws ServletException, IOException
+   {
+      ServletOutputStream out = response.getOutputStream();
+      
+      response.setHeader("Cache-Control", "no-cache");
+      response.setHeader("Pragma", "no-cache");
+      response.setHeader("Expires", "0");
+      System.out.println("UWOBO "+request.getPathInfo());
+      		
+      try { 
+	 final String cmd = request.getPathInfo();
+	 if (cmd == null) { 
+	    sendError(response, out, "unknown command", help); return;
+	 } 
+	 if (cmd.equals("/add")) {
+	    final String[] xslkey = request.getParameterValues("key");
+	    if (xslkey == null) {
+	       sendError(response, out, "bad parameters", usage[1]); return;
+	    } 
+	    html_open(response, out);
+	    for (int i = 0; i < xslkey.length; i++) {
+	       final String data[] = split2(xslkey[i], ",");
+	       out.println(msg_out("adding key "+data[0]+" ("+data[1]+")"));
+	       try {
+	          server.add(data[1], data[0]);
+	        } catch (TransformerConfigurationException tce) {
+                  out.println(exc_out("stylesheet error", tce));
+               } catch (Exception e) {
+	          out.println(exc_out(null, e));
+	       }
+	    }
+	    html_close(out); return;
+	 }
+	 if (cmd.equals("/apply")) {
+	    final String infile = request.getParameter("xmluri");
+	    final String keys = request.getParameter("keys");
 
-				final Properties props = new Properties();
-				final Enumeration e = request.getParameterNames();
-				while (e.hasMoreElements()) {
-					String param = (String) e.nextElement();
-					if (param.startsWith("param.")) {
-						final String name = param.substring(6);
-						final String value = request.getParameter(param);
-						final String[] keyParam = split(name, ".");
-						if (keyParam.length == 1) {
-							// this is a global parameter
-							Server.log("global parameter: " + keyParam[0] + " = " + value);
-							for (int i = 0; i < keySeq.length; i++)
-								// we add the global parameter only if there is no
-								// local parameter with the same name
-								if (!keySeq[i].params.containsKey(keyParam[0]))
-									keySeq[i].params.put(keyParam[0], value);
-						} else if (keyParam.length == 2) {
-							// this is a local parameter
-							Server.log("local parameter: " + keyParam[0] + "." + keyParam[1] + " = " + value);
-							for (int i = 0; i < keySeq.length; i++) {
-								if (keySeq[i].name.equals(keyParam[0]))
-									keySeq[i].params.put(keyParam[1], value);
-							}
-						} else {
-							sendError(response, HttpServletResponse.SC_BAD_REQUEST, "bad parameters", usage[6]);
-							return;
-						}
-					} else if (param.startsWith("prop.")) {
-						final String name = param.substring(5);
-						final String value = request.getParameter(param);
-						Server.log("property: " + name + " = " + value);
-						props.setProperty(name, value);
-					}
-				}
-					
-				String contentType = props.getProperty(OutputKeys.MEDIA_TYPE);
-				if (contentType == null && keySeq.length > 0) 
-					contentType = server.getContentType(keySeq[keySeq.length - 1].name);
-				else if (contentType == null)
-					contentType = "text/xml";
-				response.setContentType(contentType);
-				Server.log("content type: " + contentType);
+	    if (infile == null || keys == null) {
+	       sendError(response, out, "bad parameters", usage[6]); return;
+	    } 
 
-				out = response.getOutputStream();
-				server.apply(infile, out, keySeq, props);
-				out.close();
-				return;
-			} else if (cmd.equals("/remove")) {
-				final String key = request.getParameter("key");
-				if (key == null)
-					server.removeAll();
-				else
-					server.remove(key);
-			} else if (cmd.equals("/list")) {
-				Iterator i = server.list().iterator();
+	    final String[] keyName = split(keys, ",");
+	    final Key[] keySeq = new Key[keyName.length];
+	    for (int i = 0; i < keySeq.length; i++) {
+               keySeq[i] = new Key();
+	       keySeq[i].name = keyName[i];
+	       keySeq[i].params = new HashMap();
+	    }
 
-				response.setContentType("text/html");
-				out = response.getOutputStream();
-				out.println("<html><body><h1>Uwobo servlet</h1><p>stylesheet list:</p><ul>");
-				while (i.hasNext())
-					out.println("<li>"+i.next()+"</li>");
-				out.println("</ul></body></html>");
-				out.close();
-				return;
-			} else if (cmd.equals("/reload")) {
-				final String key = request.getParameter("key");
-				if (key == null)
-					server.reloadAll();
-				else
-					server.reload(key);
-			} else if (cmd.equals("/update")) {
-				final String key = request.getParameter("key");
-				if (key == null)
-					server.updateAll();
-				else
-					server.update(key);
-			} else if (cmd.equals("/help")) {
-				response.setContentType("text/html");
-				out = response.getOutputStream();
-				out.println("<html><body><h1>"+server.PACKAGE+" servlet - version "+server.VERSION+"</h1>");
-				out.println("<b>compiled "+server.DATE+" at "+server.TIME.substring(0,2)+":"+server.TIME.substring(2)+"</b>");
-				out.println("<p>usage:</p>"+help+"</body></html>");
-				out.close();
-				return;
-			} else {
-				sendError(response, HttpServletResponse.SC_NOT_FOUND, "unknown command", help);
-				return;
-			}	
-		} catch (TransformerConfigurationException tce) {
-			sendError(response, HttpServletResponse.SC_BAD_REQUEST, "stylesheet error", tce);
-			return;
-		} catch (SAXException se) {
-			sendError(response, HttpServletResponse.SC_BAD_REQUEST, "SAX Exception", se);
-			return;
-		} catch (Exception e) {
-			sendError(response, HttpServletResponse.SC_BAD_REQUEST, "exception", e);
-			return;
-		}
+	    final Properties props = new Properties();
+	    final Enumeration e = request.getParameterNames();
+	    while (e.hasMoreElements()) {
+	       String param = (String) e.nextElement();
+	       if (param.startsWith("param.")) {
+		  final String name = param.substring(6);
+		  final String value = request.getParameter(param);
+		  final String[] keyParam = split(name, ".");
+		  if (keyParam.length == 1) {
+		     // this is a global parameter
+		     Server.log("global parameter: " + keyParam[0] + " = " + value);
+		     for (int i = 0; i < keySeq.length; i++)
+			// we add the global parameter only if there is no
+		        // local parameter with the same name
+			if (!keySeq[i].params.containsKey(keyParam[0]))
+			   keySeq[i].params.put(keyParam[0], value);
+		  } else
+		  if (keyParam.length == 2) {
+		     // this is a local parameter
+		     Server.log("local parameter: " + keyParam[0] + "." + keyParam[1] + " = " + value);
+		     for (int i = 0; i < keySeq.length; i++) {
+			if (keySeq[i].name.equals(keyParam[0]))
+			   keySeq[i].params.put(keyParam[1], value);
+		     }
+		  } else { 
+		     sendError(response, out, "bad parameters", usage[6]); return;
+		  }
+	       } else
+	       if (param.startsWith("prop.")) {
+		  final String name = param.substring(5);
+		  final String value = request.getParameter(param);
+		  Server.log("property: " + name + " = " + value);
+		  props.setProperty(name, value);
+	       }
+	    }
+					
+	    String contentType = props.getProperty(OutputKeys.MEDIA_TYPE);
+	    if (contentType == null && keySeq.length > 0) 
+	       contentType = server.getContentType(keySeq[keySeq.length - 1].name);
+	    else if (contentType == null)
+	       contentType = "text/xml";
+	    response.setContentType(contentType);
+	    Server.log("content type: " + contentType);
 
-		response.setContentType("text/html");
-		response.setHeader("Cache-Control", "no-cache");
-		response.setHeader("Pragma", "no-cache");
-		response.setHeader("Expires", "0");
-		out = response.getOutputStream();
-		out.println("<html><body><h1>Uwobo servlet</h1><p>done</p></body></html>");
-		out.close();
-	}
+	    try {
+	       out = response.getOutputStream(); 
+	       server.apply(infile, out, keySeq, props);
+	       out.close();
+	    } catch (TransformerConfigurationException tce) {
+               sendError(response, out, exc_out("stylesheet error", tce), "");
+            } catch (Exception ee) {
+	       sendError(response, out, exc_out(null, ee), "");
+            }
+	    return;
+	 }
+	 if (cmd.equals("/remove")) {
+	    final String key = request.getParameter("keys");
+	    final String [] data = split(key, ",");
+	    html_open(response, out);
+	    for (int i = 0; i < data.length; i++) { 
+	       if (data[i] == null) {
+	          out.println(msg_out("removing all keys"));
+		  server.removeAll();
+	       } else {
+	          out.println(msg_out("removing key "+data[i]));
+		  server.remove(data[i]);
+	       }
+	    }
+	    html_close(out); return;
+	 }
+	 if (cmd.equals("/list")) {
+	    html_open(response, out);
+	    out.println("<p>stylesheet list:</p><ul>");
+	    
+	    Iterator i = server.list().iterator();
+            while (i.hasNext())
+	       out.println("<li>"+i.next()+"</li>");
+	    out.println("</ul>"); html_close(out); return;
+	 }
+	 if (cmd.equals("/reload")) {
+	    final String key = request.getParameter("keys");
+	    final String [] data = split(key, ",");
+	    html_open(response, out);
+	    for (int i = 0; i < data.length; i++) {
+	       try {
+	          if (data[i] == null) {
+	             out.println(msg_out("reloading all keys"));
+		     server.reloadAll();
+	          } else {
+	             out.println(msg_out("reloading key "+data[i]));
+		     server.reload(data[i]);
+	          }
+	       } catch (TransformerConfigurationException tce) {
+                  out.println(exc_out("stylesheet error", tce));
+               } catch (Exception e) {
+	          out.println(exc_out(null, e));
+               }
+	    }
+	    html_close(out); return;
+	 }
+         if (cmd.equals("/update")) {
+	    final String key = request.getParameter("keys");
+            final String [] data = split(key, ",");
+	    html_open(response, out);
+	    for (int i = 0; i < data.length; i++) {
+	       try {
+	          if (data[i] == null) {
+	             out.println(msg_out("updating all keys")); 
+		     server.updateAll();
+	          } else {
+	             out.println(msg_out("updating key "+data[i]));
+		     server.update(data[i]);
+	          }
+	       } catch (TransformerConfigurationException tce) {
+                  out.println(exc_out("stylesheet error", tce));
+               } catch (Exception e) {
+	          out.println(exc_out(null, e));
+               }
+	    }
+	    html_close(out); return;
+	 }
+	 if (cmd.equals("/help")) {
+	    html_open(response, out);
+	    out.println("<h2>"+server.PACKAGE+" servlet - version "+server.VERSION+"</h1>");
+	    out.println("<b>compiled "+server.DATE+" at "+server.TIME.substring(0,2)+":"+server.TIME.substring(2)+"</b>");
+	    out.println("<p>usage:</p>"+help+"</body></html>");
+	    html_close(out); return;
+	 }
+	 sendError(response, out, "unknown command", help); return;
+      } catch (Exception e) {
+	 sendError(response, out, exc_out(null, e),""); // FG: non dovrebbe servire mai
+	 return;
+      }
+   }
 
-	private void sendError(HttpServletResponse response, int code, String msg, Exception e) throws IOException {
-		String err;
-		if (e != null)
-			err = "<p>"+e.getMessage()+"</P>";
-		else
-			err = "";
-		response.setContentType("text/html");
-		response.sendError(code, "<html><body><h1>Uwobo servlet</h1><p>"+msg+"</p>"+err+"</body></html>");
-	}
-	
-	private void sendError(HttpServletResponse response, int code, String msg, String usage) throws IOException {
-		response.setContentType("text/html");
-		response.sendError(code, "<html><body><h1>Uwobo servlet</h1><p>"+msg+"</p>usage: "+usage+"</body></html>");
-	}
+   private void sendError(HttpServletResponse resp, ServletOutputStream out, 
+			  String msg, String usage)
+   throws IOException 
+   {
+      html_open(resp, out);
+      out.println("<p>"+msg+"</p>usage: "+usage);
+      html_close(out);
+   }
 	
-	public String getServletInfo() {
-		return "The UWOBO servlet";
-	}
+   public String getServletInfo()
+   {
+      return "The UWOBO servlet";
+   }
 }
-- 
2.39.2