implemented the rest of the functions on the "posts" page; fixed post links

so they work now; added the HTML Reference (originally from CW); added the
post output filtering to turn the "pseudo-URIs" in the database into real
URIs

src/com/silverwrist/venice/servlets/ConfDisplay.java

@@ -224,7 +224,7 @@ public class ConfDisplay extends VeniceServlet
 
   } // end getViewSortDefaults
 
-  private static PostInterval getInterval(ServletRequest request, TopicContext topic)
+  private static PostInterval getInterval(VeniceEngine engine, ServletRequest request, TopicContext topic)
      throws ValidationException
   {
     int first, last;
@@ -274,10 +274,10 @@ public class ConfDisplay extends VeniceServlet
     { // no range specified - cook up a default one
       last = topic.getTotalMessages();
       int ur = topic.getUnreadMessages();
-      if ((ur==0) || (ur>=20))  // TODO: configurable
-	first = last - 20;
+      if ((ur==0) || (ur>=engine.getNumPostsPerPage()))
+	first = last - engine.getNumPostsPerPage();
       else
-	first = last - (ur+2);
+	first = last - (ur + engine.getNumOldPostsBeforeNew());
       last--;
 
     } // end if
@@ -324,6 +324,72 @@ public class ConfDisplay extends VeniceServlet
 
   } // end getInterval
 
+  private static void restorePosts(ServletRequest request, ConferenceContext conf)
+  {
+    String xtopic = request.getParameter("rtop");
+    if (StringUtil.isStringEmpty(xtopic))
+      return;
+    String xcount = request.getParameter("rct");
+    if (StringUtil.isStringEmpty(xcount))
+      return;
+    
+    TopicContext topic;
+    try
+    { // get the topic corresponding to the first parameter
+      topic = conf.getTopic(Short.parseShort(xtopic));
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // the topic number was invalid - forget it
+      logger.warn("restorePosts: error translating topic number");
+      return;
+
+    } // end catch
+    catch (DataException de)
+    { // could not get the topic...
+      logger.warn("restorePosts: DataException getting topic - " + de.getMessage(),de);
+      return;
+
+    } // end catch
+    catch (AccessError ae)
+    { // no access to the topic
+      logger.warn("restorePosts: AccessError getting topic - " + ae.getMessage(),ae);
+      return;
+
+    } // end catch
+
+    int nunread;
+    try
+    { // translate the number of unread posts to set
+      nunread = Integer.parseInt(xcount);
+      if ((nunread<=0) || (nunread>topic.getTotalMessages()))
+      { // must be in the range [1, #messages]...
+	logger.warn("restorePosts: unread post count out of range");
+	return;
+
+      } // end if
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // the number of unread posts was invalid - forget it
+      logger.warn("restorePosts: error translating unread post count");
+      return;
+
+    } // end catch
+
+    try
+    { // now try to set the unread messages
+      topic.setUnreadMessages(nunread);
+
+    } // end try
+    catch (DataException de)
+    { // could not get the topic...
+      logger.warn("restorePosts: DataException setting unread messages - " + de.getMessage(),de);
+
+    } // end catch
+
+  } // end restorePosts
+
   /*--------------------------------------------------------------------------------
    * Overrides from class HttpServlet
    *--------------------------------------------------------------------------------
@@ -428,14 +494,18 @@ public class ConfDisplay extends VeniceServlet
 	if (logger.isDebugEnabled())
 	  logger.debug("MODE: display messages in topic");
 
+	// if this request is restoring the number of unread posts in another topic, try to do so
+	restorePosts(request,conf);
+
 	try
 	{ // determine what the post interval is we want to display
-	  PostInterval piv = getInterval(request,topic);
+	  VeniceEngine engine = getVeniceEngine();
+	  PostInterval piv = getInterval(engine,request,topic);
 	  boolean read_new = !(StringUtil.isStringEmpty(request.getParameter("rnm")));
 	  boolean show_adv = !(StringUtil.isStringEmpty(request.getParameter("shac")));
 
 	  // create the post display
-	  TopicPosts tpos = new TopicPosts(request,sig,conf,topic,piv.getFirst(),piv.getLast(),
+	  TopicPosts tpos = new TopicPosts(request,engine,sig,conf,topic,piv.getFirst(),piv.getLast(),
                                            read_new,show_adv);
 	  content = tpos;
 	  page_title = topic.getName() + ": " + String.valueOf(topic.getTotalMessages()) + " Total; "

src/com/silverwrist/venice/servlets/ConfOperations.java

@@ -414,7 +414,7 @@ public class ConfOperations extends VeniceServlet
 
 	    try
 	    { // do a preview generation
-	      ntf.generatePreview(getVeniceEngine(),request);
+	      ntf.generatePreview(getVeniceEngine(),conf,request);
 
 	      if (ntf.isNullRequest())
 	      { // no title or text specified - this is a "204 No Content" return

src/com/silverwrist/venice/servlets/PostOperations.java

@@ -0,0 +1,393 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets;
+
+import java.io.*;
+import java.util.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import org.apache.log4j.*;
+import com.silverwrist.util.StringUtil;
+import com.silverwrist.venice.ValidationException;
+import com.silverwrist.venice.core.*;
+import com.silverwrist.venice.servlets.format.*;
+
+public class PostOperations extends VeniceServlet
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+
+  private static final String NUKE_CONFIRM_ATTR = "servlets.PostOperations.nuke.confirm";
+  private static final String NUKE_CONFIRM_PARAM = "confirm";
+
+  private static Category logger = Category.getInstance(TopicOperations.class.getName());
+
+  /*--------------------------------------------------------------------------------
+   * Internal functions
+   *--------------------------------------------------------------------------------
+   */
+
+  private static SIGContext getSIGParameter(ServletRequest request, UserContext user)
+      throws ValidationException, DataException
+  {
+    String str = request.getParameter("sig");
+    if (str==null)
+    { // no SIG parameter - bail out now!
+      logger.error("SIG parameter not specified!");
+      throw new ValidationException("No SIG specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a SIGID, and thence to a SIGContext
+      int sigid = Integer.parseInt(str);
+      return user.getSIGContext(sigid);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert SIG parameter '" + str + "'!");
+      throw new ValidationException("Invalid SIG parameter.");
+
+    } // end catch
+
+  } // end getSIGParameter
+
+  private static ConferenceContext getConferenceParameter(ServletRequest request, SIGContext sig)
+    throws ValidationException, DataException, AccessError
+  {
+    String str = request.getParameter("conf");
+    if (str==null)
+    { // no conference parameter - bail out now!
+      logger.error("Conference parameter not specified!");
+      throw new ValidationException("No conference specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a ConfID, and thence to a ConferenceContext
+      int confid = Integer.parseInt(str);
+      return sig.getConferenceContext(confid);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert conference parameter '" + str + "'!");
+      throw new ValidationException("Invalid conference parameter.");
+
+    } // end catch
+
+  } // end getConferenceParameter
+
+  private static TopicContext getTopicParameter(ServletRequest request, ConferenceContext conf)
+    throws ValidationException, DataException, AccessError
+  {
+    String str = request.getParameter("top");
+    if (StringUtil.isStringEmpty(str))
+    { // no topic parameter - bail out now!
+      logger.error("Topic parameter not specified!");
+      throw new ValidationException("No topic specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a TopicID, and thence to a TopicContext
+      short topicid = Short.parseShort(str);
+      return conf.getTopic(topicid);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert topic parameter '" + str + "'!");
+      throw new ValidationException("Invalid topic parameter.");
+
+    } // end catch
+
+  } // end getTopicParameter
+
+  private static TopicMessageContext getMessageParameter(ServletRequest request, TopicContext topic)
+    throws ValidationException, DataException, AccessError
+  {
+    String str = request.getParameter("msg");
+    if (StringUtil.isStringEmpty(str))
+    { // no topic parameter - bail out now!
+      logger.error("Message parameter not specified!");
+      throw new ValidationException("No message specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a TopicID, and thence to a TopicContext
+      int message_num = Integer.parseInt(str);
+      return topic.getMessage(message_num);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert message parameter '" + str + "'!");
+      throw new ValidationException("Invalid message parameter.");
+
+    } // end catch
+
+  } // end getMessageParameter
+
+  /*--------------------------------------------------------------------------------
+   * Overrides from class HttpServlet
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getServletInfo()
+  {
+    String rc = "PostOperations servlet - General post operations (hide, scribble, etc.)\n"
+              + "Part of the Venice Web Communities System\n";
+    return rc;
+
+  } // end getServletInfo
+
+  public void doGet(HttpServletRequest request, HttpServletResponse response)
+    throws ServletException, IOException
+  {
+    UserContext user = getUserContext(request);
+    RenderData rdat = createRenderData(request,response);
+    String location = "top";
+    String locator = null;
+    String page_title = null;
+    Object content = null;
+    SIGContext sig = null;            // SIG context
+    ConferenceContext conf = null;    // conference context
+    TopicContext topic = null;        // topic context
+    TopicMessageContext msg = null;   // message context
+
+    try
+    { // this outer try is to catch ValidationException
+      try
+      { // all commands require a SIG parameter
+	sig = getSIGParameter(request,user);
+	changeMenuSIG(request,sig);
+	if (logger.isDebugEnabled())
+	  logger.debug("found SIG #" + String.valueOf(sig.getSIGID()));
+	locator = "sig=" + String.valueOf(sig.getSIGID());
+	location = "sigprofile?" + locator;
+
+      } // end try
+      catch (DataException de)
+      { // error looking up the SIG
+	page_title = "Database Error";
+	content = new ErrorBox(page_title,"Database error finding SIG: " + de.getMessage(),location);
+
+      } // end catch
+
+      if (content==null)
+      { // we got the SIG parameter OK
+	try
+	{ // all commands require a conference parameter
+	  conf = getConferenceParameter(request,sig);
+	  if (logger.isDebugEnabled())
+	    logger.debug("found conf #" + String.valueOf(conf.getConfID()));
+	  locator += "&conf=" + String.valueOf(conf.getConfID());
+	  location = "confdisp?" + locator;
+	  
+	} // end try
+	catch (DataException de)
+	{ // error looking up the conference
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error finding conference: " + de.getMessage(),location);
+
+	} // end catch
+
+      } // end if
+
+      if (content==null)
+      { // we got the conference parameter OK
+	try
+	{ // now we need a topic parameter
+	  topic = getTopicParameter(request,conf);
+	  if (logger.isDebugEnabled())
+	    logger.debug("found topic #" + String.valueOf(topic.getTopicID()));
+	  locator += "&top=" + String.valueOf(topic.getTopicID());
+	  location = "confdisp?" + locator;
+
+	} // end try
+	catch (DataException de)
+	{ // error looking up the conference
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error finding topic: " + de.getMessage(),location);
+
+	} // end catch
+
+      } // end if
+
+      if (content==null)
+      { // we got the topic parameter OK
+	try
+	{ // now we need a message parameter
+	  msg = getMessageParameter(request,topic);
+	  if (logger.isDebugEnabled())
+	    logger.debug("found message #" + String.valueOf(msg.getPostID()));
+	  location = "confdisp?" + locator + "&p1=" + msg.getPostNumber() + "&shac=1";
+
+	} // end try
+	catch (DataException de)
+	{ // error looking up the conference
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error finding message: " + de.getMessage(),location);
+
+	} // end catch
+
+      } // end if
+
+    } // end try
+    catch (ValidationException ve)
+    { // these all get handled in pretty much the same way
+      page_title = "Error";
+      content = new ErrorBox(null,ve.getMessage(),location);
+
+    } // end catch
+    catch (AccessError ae)
+    { // these all get handled in pretty much the same way
+      page_title = "Access Error";
+      content = new ErrorBox(page_title,ae.getMessage(),location);
+
+    } // end catch
+
+    if (content==null)
+    { // figure out what command we want to perform
+      String cmd = request.getParameter("cmd");
+      if (cmd==null)
+	cmd = "???";
+
+      if (cmd.equals("HY") || cmd.equals("HN"))
+      { // we want to hide or show the message
+	try
+	{ // attempt to hide or show the message
+	  msg.setHidden(cmd.equals("HY"));
+
+	  // go back and display stuff
+	  rdat.redirectTo(location);
+	  return;
+
+	} // end try
+	catch (DataException de)
+	{ // there was a database error
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error setting hidden status: " + de.getMessage(),
+				 location);
+
+	} // end catch
+	catch (AccessError ae)
+	{ // naughty naughty = you can't do this!
+	  page_title = "Access Error";
+	  content = new ErrorBox(page_title,ae.getMessage(),location);
+
+	} // end catch
+
+      } // end if ("hide" or "show")
+      else if (cmd.equals("SCR"))
+      { // we want to scribble the message
+	try
+	{ // attempt to scribble the message
+	  msg.scribble();
+
+	  // go back and display stuff
+	  rdat.redirectTo(location);
+	  return;
+
+	} // end try
+	catch (DataException de)
+	{ // there was a database error
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error scribbling message: " + de.getMessage(),
+				 location);
+
+	} // end catch
+	catch (AccessError ae)
+	{ // naughty naughty = you can't do this!
+	  page_title = "Access Error";
+	  content = new ErrorBox(page_title,ae.getMessage(),location);
+
+	} // end catch
+
+      } // end else if ("scribble")
+      else if (cmd.equals("NUKE"))
+      { // nuking requires confirmation
+	try
+	{ // we need confirmation on this operation!
+	  if (ConfirmBox.isConfirmed(request,NUKE_CONFIRM_ATTR,NUKE_CONFIRM_PARAM))
+	  { // OK, go ahead, nuke the message!
+	    msg.nuke();
+
+	    // after which, redirect to topic view
+	    rdat.redirectTo("confdisp?" + locator);
+	    return;
+
+	  } // end if
+	  else
+	  { // not a proper confirmation - better display one
+	    List aliases = conf.getAliases();
+	    String message = "You are about to nuke message <" + (String)(aliases.get(0)) + "."
+	                   + String.valueOf(topic.getTopicNumber()) + "." + String.valueOf(msg.getPostNumber())
+                           + ">, originally composed by <" + msg.getCreatorName()
+	                   + ">!  Are you sure you want to do this?";
+	    String confirm_url = "postops?" + locator + "&msg=" + msg.getPostNumber() + "&cmd=NUKE";
+
+	    page_title = "Nuke Message";
+	    content = new ConfirmBox(request,NUKE_CONFIRM_ATTR,NUKE_CONFIRM_PARAM,page_title,
+				     message,confirm_url,location);
+
+	  } // end else
+
+	} // end try
+	catch (DataException de)
+	{ // there was a database error
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error nuking message: " + de.getMessage(),
+				 location);
+
+	} // end catch
+	catch (AccessError ae)
+	{ // naughty naughty = you can't do this!
+	  page_title = "Access Error";
+	  content = new ErrorBox(page_title,ae.getMessage(),location);
+
+	} // end catch
+
+      } // end else if ("nuke")
+      else
+      { // unrecognized command!
+	page_title = "Internal Error";
+	logger.error("invalid command to PostOperations.doGet: " + cmd);
+	content = new ErrorBox(page_title,"Invalid command to PostOperations.doGet",location);
+
+      } // end else
+
+    } // end if (got parameters OK)
+
+    BaseJSPData basedat = new BaseJSPData(page_title,location,content);
+    basedat.transfer(getServletContext(),rdat);
+
+  } // end doGet
+
+} // end class PostOperations
+
+
+
+
+
+

src/com/silverwrist/venice/servlets/PostShortcut.java

@@ -0,0 +1,161 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets;
+
+import java.io.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import com.silverwrist.venice.ValidationException;
+import com.silverwrist.venice.core.*;
+import com.silverwrist.venice.db.PostLinkDecoder;
+import com.silverwrist.venice.servlets.format.*;
+
+public class PostShortcut extends VeniceServlet
+{
+  /*--------------------------------------------------------------------------------
+   * Overrides from class HttpServlet
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getServletInfo()
+  {
+    String rc = "PostShortcut servlet - Decodes a post link and redirects to it\n"
+              + "Part of the Venice Web Communities System\n";
+    return rc;
+
+  } // end getServletInfo
+
+  public void doGet(HttpServletRequest request, HttpServletResponse response)
+    throws ServletException, IOException
+  {
+    UserContext user = getUserContext(request);
+    RenderData rdat = createRenderData(request,response);
+    String raw_link = request.getPathInfo().substring(1);
+    PostLinkDecoder decoder;
+
+    try
+    { // attempt to decode the path link information
+      decoder = new PostLinkDecoder(raw_link);
+      if (decoder.getSIG()==null)  // it must include the SIG
+	throw new ValidationException("ambiguous post link (no SIG)");
+
+    } // end try
+    catch (ValidationException e)
+    { // display an error message for validation
+      String page_title = "Invalid Post Link";
+      ContentRender content = new ErrorBox(page_title,"Invalid post link \"" + raw_link + "\": "
+					   + e.getMessage(),null);
+      new BaseJSPData(page_title,"top",content).transfer(getServletContext(),rdat);
+      return;
+      
+    } // end catch
+
+    SIGContext sig;
+    try
+    { // get the SIG represented by that alias
+      sig = user.getSIGContext(decoder.getSIG());
+
+    } // end try
+    catch (DataException e)
+    { // can't find the SIG - we're screwed
+      String page_title = "Invalid Post Link";
+      ContentRender content = new ErrorBox(page_title,"Invalid post link \"" + raw_link
+					   + "\": cannot find SIG: " + e.getMessage(),null);
+      new BaseJSPData(page_title,"top",content).transfer(getServletContext(),rdat);
+      return;
+      
+    } // end catch
+
+    if (decoder.getConference()==null)
+    { // it's a SIG link only - redirect to the SIG's default page
+      rdat.redirectTo("sig/" + decoder.getSIG());
+      return;
+
+    } // end if
+
+    ConferenceContext conf;
+    try
+    { // get the conference represented by that alias
+      conf = sig.getConferenceContext(decoder.getConference());
+
+    } // end try
+    catch (DataException e)
+    { // can't find the conference - we're screwed
+      String page_title = "Invalid Post Link";
+      ContentRender content = new ErrorBox(page_title,"Invalid post link \"" + raw_link
+					   + "\": cannot find conference: " + e.getMessage(),null);
+      new BaseJSPData(page_title,"top",content).transfer(getServletContext(),rdat);
+      return;
+      
+    } // end catch
+    catch (AccessError ae)
+    { // we can't get to the conference...
+      String page_title = "Access Error";
+      ContentRender content = new ErrorBox(page_title,ae.getMessage(),null);
+      new BaseJSPData(page_title,"top",content).transfer(getServletContext(),rdat);
+      return;
+
+    } // end catch
+
+    // compute an elementary "locator"
+    String locator = "sig=" + String.valueOf(sig.getSIGID()) + "&conf=" + String.valueOf(conf.getConfID());
+
+    if (decoder.getTopic()==-1)
+    { // just a conference link - go to the top-level display
+      rdat.redirectTo("confdisp?" + locator);
+      return;
+
+    } // end if
+
+    TopicContext topic;
+    try
+    { // get the topic number specified within that topic
+      topic = conf.getTopic(decoder.getTopic());
+
+    } // end try
+    catch (DataException e)
+    { // we can't find the topic - we're screwed
+      String page_title = "Invalid Post Link";
+      ContentRender content = new ErrorBox(page_title,"Invalid post link \"" + raw_link
+					   + "\": cannot find topic: " + e.getMessage(),null);
+      new BaseJSPData(page_title,"top",content).transfer(getServletContext(),rdat);
+      return;
+      
+    } // end catch
+    catch (AccessError ae)
+    { // we can't get to the topic...
+      String page_title = "Access Error";
+      ContentRender content = new ErrorBox(page_title,ae.getMessage(),null);
+      new BaseJSPData(page_title,"top",content).transfer(getServletContext(),rdat);
+      return;
+
+    } // end catch
+
+    // add the topic to our locator
+    locator += "&top=" + String.valueOf(decoder.getTopic());
+
+    if (decoder.getFirstPost()==-1) // we're just referencing the topic
+      rdat.redirectTo("confdisp?" + locator + "&rnm=1");
+    else  // we're referencing a post range within the topic
+      rdat.redirectTo("confdisp?" + locator + "&p1=" + String.valueOf(decoder.getFirstPost()) + "&p2="
+		      + String.valueOf(decoder.getLastPost()));
+
+  } // end doGet
+
+} // end class PostShortcut
+

src/com/silverwrist/venice/servlets/SIGFrontEnd.java

@@ -7,7 +7,7 @@
  * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
  * language governing rights and limitations under the License.
  * 
- * The Original Code is the Venice Web Community System.
+ * The Original Code is the Venice Web Communities System.
  * 
  * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
  * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
@@ -25,10 +25,15 @@ import com.silverwrist.venice.servlets.format.*;
 
 public class SIGFrontEnd extends VeniceServlet
 {
+  /*--------------------------------------------------------------------------------
+   * Overrides from class HttpServlet
+   *--------------------------------------------------------------------------------
+   */
+
   public String getServletInfo()
   {
     String rc = "SIGFrontEnd servlet - Redirects to the \"default feature\" of a SIG\n"
-              + "Part of the Venice Web conferencing system\n";
+              + "Part of the Venice Web Communities System\n";
     return rc;
 
   } // end getServletInfo

src/com/silverwrist/venice/servlets/TopicOperations.java

@@ -0,0 +1,357 @@
+/*
+ * The contents of this file are subject to the Mozilla Public License Version 1.1
+ * (the "License"); you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at <http://www.mozilla.org/MPL/>.
+ * 
+ * Software distributed under the License is distributed on an "AS IS" basis, WITHOUT
+ * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
+ * language governing rights and limitations under the License.
+ * 
+ * The Original Code is the Venice Web Communities System.
+ * 
+ * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
+ * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
+ * Copyright (C) 2001 Eric J. Bowersox/Silverwrist Design Studios.  All Rights Reserved.
+ * 
+ * Contributor(s): 
+ */
+package com.silverwrist.venice.servlets;
+
+import java.io.*;
+import javax.servlet.*;
+import javax.servlet.http.*;
+import org.apache.log4j.*;
+import com.silverwrist.util.StringUtil;
+import com.silverwrist.venice.ValidationException;
+import com.silverwrist.venice.core.*;
+import com.silverwrist.venice.servlets.format.*;
+
+public class TopicOperations extends VeniceServlet
+{
+  /*--------------------------------------------------------------------------------
+   * Static data members
+   *--------------------------------------------------------------------------------
+   */
+ 
+  private static final String DELETE_CONFIRM_ATTR = "servlets.TopicOperations.delete.confirm";
+  private static final String DELETE_CONFIRM_PARAM = "confirm";
+
+  private static Category logger = Category.getInstance(TopicOperations.class.getName());
+
+  /*--------------------------------------------------------------------------------
+   * Internal functions
+   *--------------------------------------------------------------------------------
+   */
+
+  private static SIGContext getSIGParameter(ServletRequest request, UserContext user)
+      throws ValidationException, DataException
+  {
+    String str = request.getParameter("sig");
+    if (str==null)
+    { // no SIG parameter - bail out now!
+      logger.error("SIG parameter not specified!");
+      throw new ValidationException("No SIG specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a SIGID, and thence to a SIGContext
+      int sigid = Integer.parseInt(str);
+      return user.getSIGContext(sigid);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert SIG parameter '" + str + "'!");
+      throw new ValidationException("Invalid SIG parameter.");
+
+    } // end catch
+
+  } // end getSIGParameter
+
+  private static ConferenceContext getConferenceParameter(ServletRequest request, SIGContext sig)
+    throws ValidationException, DataException, AccessError
+  {
+    String str = request.getParameter("conf");
+    if (str==null)
+    { // no conference parameter - bail out now!
+      logger.error("Conference parameter not specified!");
+      throw new ValidationException("No conference specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a ConfID, and thence to a ConferenceContext
+      int confid = Integer.parseInt(str);
+      return sig.getConferenceContext(confid);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert conference parameter '" + str + "'!");
+      throw new ValidationException("Invalid conference parameter.");
+
+    } // end catch
+
+  } // end getConferenceParameter
+
+  private static TopicContext getTopicParameter(ServletRequest request, ConferenceContext conf)
+    throws ValidationException, DataException, AccessError
+  {
+    String str = request.getParameter("top");
+    if (StringUtil.isStringEmpty(str))
+    { // no topic parameter - bail out now!
+      logger.error("Topic parameter not specified!");
+      throw new ValidationException("No topic specified.");
+
+    } // end if
+
+    try
+    { // turn the string into a TopicID, and thence to a TopicContext
+      short topicid = Short.parseShort(str);
+      return conf.getTopic(topicid);
+
+    } // end try
+    catch (NumberFormatException nfe)
+    { // error in Integer.parseInt
+      logger.error("Cannot convert topic parameter '" + str + "'!");
+      throw new ValidationException("Invalid topic parameter.");
+
+    } // end catch
+
+  } // end getTopicParameter
+
+  /*--------------------------------------------------------------------------------
+   * Overrides from class HttpServlet
+   *--------------------------------------------------------------------------------
+   */
+
+  public String getServletInfo()
+  {
+    String rc = "TopicOperations servlet - General topic operations (freeze, archive, etc.)\n"
+              + "Part of the Venice Web Communities System\n";
+    return rc;
+
+  } // end getServletInfo
+
+  public void doGet(HttpServletRequest request, HttpServletResponse response)
+    throws ServletException, IOException
+  {
+    UserContext user = getUserContext(request);
+    RenderData rdat = createRenderData(request,response);
+    String location = "top";
+    String locator = null;
+    String page_title = null;
+    Object content = null;
+    SIGContext sig = null;            // SIG context
+    ConferenceContext conf = null;    // conference context
+    TopicContext topic = null;        // topic context
+
+    try
+    { // this outer try is to catch ValidationException
+      try
+      { // all commands require a SIG parameter
+	sig = getSIGParameter(request,user);
+	changeMenuSIG(request,sig);
+	if (logger.isDebugEnabled())
+	  logger.debug("found SIG #" + String.valueOf(sig.getSIGID()));
+	locator = "sig=" + String.valueOf(sig.getSIGID());
+	location = "sigprofile?" + locator;
+
+      } // end try
+      catch (DataException de)
+      { // error looking up the SIG
+	page_title = "Database Error";
+	content = new ErrorBox(page_title,"Database error finding SIG: " + de.getMessage(),location);
+
+      } // end catch
+
+      if (content==null)
+      { // we got the SIG parameter OK
+	try
+	{ // all commands require a conference parameter
+	  conf = getConferenceParameter(request,sig);
+	  if (logger.isDebugEnabled())
+	    logger.debug("found conf #" + String.valueOf(conf.getConfID()));
+	  locator += "&conf=" + String.valueOf(conf.getConfID());
+	  location = "confdisp?" + locator;
+	  
+	} // end try
+	catch (DataException de)
+	{ // error looking up the conference
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error finding conference: " + de.getMessage(),location);
+
+	} // end catch
+
+      } // end if
+
+      if (content==null)
+      { // we got the conference parameter OK
+	try
+	{ // now we need a topic parameter
+	  topic = getTopicParameter(request,conf);
+	  if (logger.isDebugEnabled())
+	    logger.debug("found topic #" + String.valueOf(topic.getTopicID()));
+	  locator += "&top=" + String.valueOf(topic.getTopicNumber());
+	  location = "confdisp?" + locator;
+
+	} // end try
+	catch (DataException de)
+	{ // error looking up the conference
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error finding topic: " + de.getMessage(),location);
+
+	} // end catch
+
+      } // end if
+
+    } // end try
+    catch (ValidationException ve)
+    { // these all get handled in pretty much the same way
+      page_title = "Error";
+      content = new ErrorBox(null,ve.getMessage(),location);
+
+    } // end catch
+    catch (AccessError ae)
+    { // these all get handled in pretty much the same way
+      page_title = "Access Error";
+      content = new ErrorBox(page_title,ae.getMessage(),location);
+
+    } // end catch
+
+    if (content==null)
+    { // figure out what command we want to perform...
+      String cmd = request.getParameter("cmd");
+      if (cmd==null)
+	cmd = "???";
+
+      if (cmd.equals("HY") || cmd.equals("HN"))
+      { // we want to set the hide status of the topic
+	try
+	{ // call down to set the topic!
+	  topic.setHidden(cmd.equals("HY"));
+
+	  // go back to the topic view
+	  rdat.redirectTo(location);
+	  return;
+
+	} // end try
+	catch (DataException de)
+	{ // there was a database error
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error setting hide status: " + de.getMessage(),location);
+
+	} // end catch
+	
+      } // end if ("hide" or "show")
+      else if (cmd.equals("FY") || cmd.equals("FN"))
+      { // we want to set the frozen status of the topic
+	try
+	{ // call down to set the topic!
+	  topic.setFrozen(cmd.equals("FY"));
+
+	  // go back to the topic view
+	  rdat.redirectTo(location);
+	  return;
+
+	} // end try
+	catch (DataException de)
+	{ // there was a database error
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error setting freeze status: " + de.getMessage(),
+				 location);
+
+	} // end catch
+	catch (AccessError ae)
+	{ // naughty naughty = you can't do this!
+	  page_title = "Access Error";
+	  content = new ErrorBox(page_title,ae.getMessage(),location);
+
+	} // end catch
+	
+      } // end else if ("freeze" or "unfreeze")
+      else if (cmd.equals("AY") || cmd.equals("AN"))
+      { // we want to change the archived status of the topic
+	try
+	{ // call down to set the topic!
+	  topic.setArchived(cmd.equals("AY"));
+
+	  // go back to the topic view
+	  rdat.redirectTo(location);
+	  return;
+
+	} // end try
+	catch (DataException de)
+	{ // there was a database error
+	  page_title = "Database Error";
+	  content = new ErrorBox(page_title,"Database error setting archive status: " + de.getMessage(),
+				 location);
+
+	} // end catch
+	catch (AccessError ae)
+	{ // naughty naughty = you can't do this!
+	  page_title = "Access Error";
+	  content = new ErrorBox(page_title,ae.getMessage(),location);
+
+	} // end catch
+	
+      } // end else if ("archive" or "unarchive")
+      else if (cmd.equals("DEL"))
+      { // we need confirmation on this operation!
+	if (ConfirmBox.isConfirmed(request,DELETE_CONFIRM_ATTR,DELETE_CONFIRM_PARAM))
+	{ // OK, go ahead, delete the topic!
+	  location = "confdisp?sig=" + String.valueOf(sig.getSIGID()) + "&conf="
+                   + String.valueOf(conf.getConfID());
+
+	  try
+	  { // delete the bloody topic!
+	    topic.delete();
+
+	    // after which, redirect to conference view
+	    rdat.redirectTo(location);
+	    return;
+
+	  } // end try
+	  catch (DataException de)
+	  { // there was a database error
+	    page_title = "Database Error";
+	    content = new ErrorBox(page_title,"Database error deleting topic: " + de.getMessage(),location);
+
+	  } // end catch
+	  catch (AccessError ae)
+	  { // naughty naughty = you can't do this!
+	    page_title = "Access Error";
+	    content = new ErrorBox(page_title,ae.getMessage(),location);
+
+	  } // end catch
+
+	} // end if
+	else
+	{ // not a proper confirmation - better display one
+	  String message = "You are about to delete topic " + String.valueOf(topic.getTopicNumber())
+                 + " from the \"" + conf.getName() + "\" conference!  Are you sure you want to do this?";
+	  String confirm_url = "topicops?" + locator + "&cmd=DEL";
+	  page_title = "Delete Topic";
+	  content = new ConfirmBox(request,DELETE_CONFIRM_ATTR,DELETE_CONFIRM_PARAM,page_title,
+				   message,confirm_url,location);
+
+	} // end else
+
+      } // end else if ("delete")
+      else
+      { // unrecognized command
+	page_title = "Internal Error";
+	logger.error("invalid command to TopicOperations.doGet: " + cmd);
+	content = new ErrorBox(page_title,"Invalid command to TopicOperations.doGet",location);
+
+      } // end else
+
+    } // end if
+
+    BaseJSPData basedat = new BaseJSPData(page_title,location,content);
+    basedat.transfer(getServletContext(),rdat);
+
+  } // end doGet
+
+} // end class TopicOperations

src/com/silverwrist/venice/servlets/format/NewTopicForm.java

@@ -101,7 +101,8 @@ public class NewTopicForm implements JSPRender
 
   } // end setupNewRequest
 
-  public void generatePreview(VeniceEngine engine, ServletRequest request) throws ValidationException
+  public void generatePreview(VeniceEngine engine, ConferenceContext conf, ServletRequest request)
+      throws ValidationException
   {
     HTMLChecker check;
 
@@ -136,7 +137,7 @@ public class NewTopicForm implements JSPRender
       post_box = check.getValue();
 
       // generate the body text preview
-      check = engine.getPreviewChecker();
+      check = conf.getNewTopicPreviewChecker();
       check.append(foo);
       check.finish();
       preview = check.getValue();

src/com/silverwrist/venice/servlets/format/PostPreview.java

@@ -79,7 +79,7 @@ public class PostPreview implements JSPRender
       this.data = check.getValue();
 
       // now generate the preview
-      check = engine.getPreviewChecker();
+      check = topic.getPreviewChecker();
       check.append(data);
       check.finish();
       this.preview = check.getValue();

src/com/silverwrist/venice/servlets/format/PostSlippage.java

@@ -47,6 +47,7 @@ public class PostSlippage implements JSPRender
   private String pseud;
   private String text;
   private boolean attach;
+  private String topic_stem;
 
   /*--------------------------------------------------------------------------------
    * Constructor
@@ -63,6 +64,8 @@ public class PostSlippage implements JSPRender
     this.messages = topic.getMessages(lastval,topic.getTotalMessages()-1);
     this.next = next;
     this.attach = attach;
+    List aliases = conf.getAliases();
+    topic_stem = (String)(aliases.get(0)) + "." + String.valueOf(topic.getTopicNumber()) + ".";
 
     try
     { // run the text and pseud through an HTML checker to escape them
@@ -213,4 +216,10 @@ public class PostSlippage implements JSPRender
 
   } // end getBodyText
 
+  public String getMessageReference(TopicMessageContext msg)
+  {
+    return topic_stem + String.valueOf(msg.getPostNumber());
+
+  } // end getMessageReference
+
 } // end class PostSlippage

src/com/silverwrist/venice/servlets/format/RenderConfig.java

@@ -54,6 +54,7 @@ public class RenderConfig
   private String font_face;
   private String base_url;
   private String image_url;
+  private String static_url;
   private String site_logo;
 
   /*--------------------------------------------------------------------------------
@@ -148,6 +149,17 @@ public class RenderConfig
     if (logger.isDebugEnabled())
       logger.debug("Image path: " + image_url);
 
+    static_url = paths_sect_h.getSubElementText("static");
+    if (static_url==null)
+    { // no <static/> tag - bail out now!
+      logger.fatal("<paths/> section has no <static/> element");
+      throw new ConfigException("no <static/> found in <paths/> section",paths_sect);
+
+    } // end if
+
+    if (logger.isDebugEnabled())
+      logger.debug("Static files path: " + static_url);
+
     site_logo = paths_sect_h.getSubElementText("site-logo");
     if (site_logo==null)
     { // no <image/> tag - bail out now!
@@ -256,6 +268,14 @@ public class RenderConfig
 
   } // end getFullImagePath
 
+  String getStaticFilePath(String name)
+  {
+    StringBuffer buf = new StringBuffer();
+    buf.append(static_url).append(name);
+    return buf.toString();
+
+  } // end getStaticFilePath
+
   String getTitleTag(String specific)
   {
     StringBuffer buf = new StringBuffer();

src/com/silverwrist/venice/servlets/format/RenderData.java

@@ -7,7 +7,7 @@
  * WARRANTY OF ANY KIND, either express or implied. See the License for the specific
  * language governing rights and limitations under the License.
  * 
- * The Original Code is the Venice Web Community System.
+ * The Original Code is the Venice Web Communities System.
  * 
  * The Initial Developer of the Original Code is Eric J. Bowersox <erbo@silcom.com>,
  * for Silverwrist Design Studios.  Portions created by Eric J. Bowersox are
@@ -24,6 +24,9 @@ import javax.servlet.*;
 import javax.servlet.http.*;
 import org.apache.log4j.*;
 import com.silverwrist.util.StringUtil;
+import com.silverwrist.venice.core.IDUtils;
+import com.silverwrist.venice.db.PostLinkRewriter;
+import com.silverwrist.venice.db.UserNameRewriter;
 
 public class RenderData
 {
@@ -128,6 +131,12 @@ public class RenderData
 
   } // end getFullImagePath
 
+  public String getStaticFilePath(String name)
+  {
+    return rconf.getStaticFilePath(name);
+
+  } // end getStaticFilePath
+
   public String getFormatJSPPath(String name)
   {
     return "/format/" + name;
@@ -320,4 +329,87 @@ public class RenderData
 
   } // end sendBinaryData
 
+  public String rewritePostData(String data)
+  {
+    if ((data.indexOf(PostLinkRewriter.URI_PREFIX)<0) && (data.indexOf(UserNameRewriter.URI_PREFIX)<0))
+      return data;
+
+    StringBuffer buf = new StringBuffer();
+    String interm;
+
+    if (data.indexOf(PostLinkRewriter.URI_PREFIX)>=0)
+    { // begin replacing everything with post links
+      String t = data;
+      int p = t.indexOf(PostLinkRewriter.URI_PREFIX);
+      while (p>=0)
+      { // break off the start of the string
+	if (p>0)
+	  buf.append(t.substring(0,p));
+	t = t.substring(p + PostLinkRewriter.URI_PREFIX.length());
+
+	// find the end of the post link...
+	p = 0;
+	while (IDUtils.isValidPostLinkChar(t.charAt(p)))
+	  p++;
+
+	if (p>0)
+	{ // append the post link to the "go" servlet path, and encode the lot
+	  buf.append(getEncodedServletPath("go/" + t.substring(0,p)));
+	  t = t.substring(p);
+
+	} // end if
+	else  // false alarm
+	  buf.append(PostLinkRewriter.URI_PREFIX);
+
+	// and now look again...
+	p = t.indexOf(PostLinkRewriter.URI_PREFIX);
+
+      } // end while
+
+      buf.append(t);
+      interm = buf.toString();
+      buf.setLength(0);
+
+    } // end if
+    else  // no post link strings, this is the intermediate form
+      interm = data;
+
+    if (interm.indexOf(UserNameRewriter.URI_PREFIX)>=0)
+    { // begin replacing everything with user links
+      String t = interm;
+      int p = t.indexOf(UserNameRewriter.URI_PREFIX);
+      while (p>=0)
+      { // break off the start of the string
+	if (p>0)
+	  buf.append(t.substring(0,p));
+	t = t.substring(p + UserNameRewriter.URI_PREFIX.length());
+
+	// find the end of the user link...
+	p = 0;
+	while (IDUtils.isValidVeniceIDChar(t.charAt(p)))
+	  p++;
+
+	if (p>0)
+	{ // append the post link to the "user" servlet path, and encode the lot
+	  buf.append(getEncodedServletPath("user/" + t.substring(0,p)));
+	  t = t.substring(p);
+
+	} // end if
+	else  // false alarm
+	  buf.append(UserNameRewriter.URI_PREFIX);
+
+	// and now look again...
+	p = t.indexOf(UserNameRewriter.URI_PREFIX);
+
+      } // end while
+
+      buf.append(t);
+      return buf.toString();
+
+    } // end if
+    else  // no more to find - just return this
+      return interm;
+
+  } // end rewritePostData
+
 } // end class RenderData

src/com/silverwrist/venice/servlets/format/TopicPosts.java

@@ -38,6 +38,7 @@ public class TopicPosts implements JSPRender
    *--------------------------------------------------------------------------------
    */
 
+  private VeniceEngine engine;
   private SIGContext sig;
   private ConferenceContext conf;
   private TopicContext topic;
@@ -47,6 +48,7 @@ public class TopicPosts implements JSPRender
   private int unread;
   private List messages;
   private TopicVisitOrder visit_order;
+  private String topic_stem;
   private String cache_locator = null;
 
   /*--------------------------------------------------------------------------------
@@ -54,10 +56,11 @@ public class TopicPosts implements JSPRender
    *--------------------------------------------------------------------------------
    */
 
-  public TopicPosts(HttpServletRequest request, SIGContext sig, ConferenceContext conf, TopicContext topic,
-		    int first, int last, boolean read_new, boolean show_advanced)
+  public TopicPosts(HttpServletRequest request, VeniceEngine engine, SIGContext sig, ConferenceContext conf,
+		    TopicContext topic, int first, int last, boolean read_new, boolean show_advanced)
       throws DataException, AccessError
   {
+    this.engine = engine;
     this.sig = sig;
     this.conf = conf;
     this.topic = topic;
@@ -70,6 +73,8 @@ public class TopicPosts implements JSPRender
     this.messages = topic.getMessages(first,last);
     this.visit_order = TopicVisitOrder.retrieve(request.getSession(true),conf.getConfID());
     visit_order.visit(topic.getTopicNumber());
+    List aliases = conf.getAliases();
+    topic_stem = (String)(aliases.get(0)) + "." + String.valueOf(topic.getTopicNumber()) + ".";
 
   } // end constructor
 
@@ -192,6 +197,14 @@ public class TopicPosts implements JSPRender
 
   } // end getNextLocator
 
+  public String getRestoreLocator()
+  {
+    StringBuffer buf = new StringBuffer("rtop=");
+    buf.append(topic.getTopicNumber()).append("&rct=").append(unread);
+    return buf.toString();
+
+  } // end getRestoreLocator
+
   public String getIdentifyingData()
   {
     StringBuffer buf = new StringBuffer("Posts ");
@@ -262,7 +275,7 @@ public class TopicPosts implements JSPRender
 
   public boolean canDeleteTopic()
   {
-    return false;  // TODO: fix me
+    return topic.canDelete();
 
   } // end canDeleteTopic
 
@@ -274,7 +287,7 @@ public class TopicPosts implements JSPRender
 
   public String getScrollUpLocator()
   {
-    int new_first = first - 20;  // TODO: configurable
+    int new_first = first - engine.getNumPostsPerPage();
     int new_last = last - 1;
     if (new_first<0)
     { // normalize so we start at 0
@@ -291,14 +304,14 @@ public class TopicPosts implements JSPRender
 
   public boolean canScrollDown()
   {
-    return ((topic.getTotalMessages() - (1 + last))>=20); // TODO: configurable
+    return ((topic.getTotalMessages() - (1 + last))>=engine.getNumPostsPerPage());
 
   } // end canScrollDown
 
   public String getScrollDownLocator()
   {
     StringBuffer buf = new StringBuffer("p1=");
-    buf.append(last+1).append("&p2=").append(last+20);  // TODO: configurable
+    buf.append(last+1).append("&p2=").append(last+engine.getNumPostsPerPage());
     return buf.toString();
 
   } // end getScrollDownLocator
@@ -313,7 +326,7 @@ public class TopicPosts implements JSPRender
   {
     int my_last = topic.getTotalMessages();
     StringBuffer buf = new StringBuffer("p1=");
-    buf.append(my_last-20).append("&p2=").append(my_last-1);  // TODO: configurable
+    buf.append(my_last-engine.getNumPostsPerPage()).append("&p2=").append(my_last-1);
     return buf.toString();
 
   } // end getScrollToEndLocator
@@ -351,4 +364,16 @@ public class TopicPosts implements JSPRender
 
   } // end getDefaultPseud
 
+  public String getMessageReference(TopicMessageContext msg)
+  {
+    return topic_stem + String.valueOf(msg.getPostNumber());
+
+  } // end getMessageReference
+
+  public int getNumPostsPerPage()
+  {
+    return engine.getNumPostsPerPage();
+
+  } // end getNumPostsPerPage
+
 } // end class TopicPosts