From 2e2578904b5c3b6e2470bff1fa147631142ee5df Mon Sep 17 00:00:00 2001
From: jestin
Date: Tue, 7 Jan 2003 10:39:13 +0000
Subject: Lotsa changes. Voire Changelog pour les détails, ou les en-têtes de
 chaque fichier.

---
 src/Probe.java | 178 ++++++++++++++++++++++++++++++++-------------------------
 1 file changed, 99 insertions(+), 79 deletions(-)

(limited to 'src/Probe.java')

diff --git a/src/Probe.java b/src/Probe.java
index d560298..bd37089 100644
--- a/src/Probe.java
+++ b/src/Probe.java
@@ -1,15 +1,19 @@
-package fr.dgac.ivy ;
-import java.io.*;
-import java.util.*;
-import gnu.getopt.Getopt;
-
 /**
  * terminal implementation in java of the ivyprobe.
+ *
  * @author	Yannick Jestin
  * @author	<a href="http://www.tls.cena.fr/products/ivy/">http://www.tls.cena.fr/products/ivy/</a>
- * 
+ *
+ * (c) CENA
  *
  * Changelog:
+ * 1.2.3
+ *   - now allows directMessages with the .direct command
+ *   - the parseMsg is being rewritten with regexps
+ *   - now handles the IVY_DEBUG property
+ *   - now handles the -q quiet option
+ *   - now handles the ^D ( end of input ) in a clean fashion
+ *   - the constructor is public, you can embed a Probe in other programs
  * 1.2.2
  *   - changes setProperty to a backward-compatible construct
  *   - now uses the bus.domains(String domain) in order to display the domain
@@ -30,47 +34,45 @@ import gnu.getopt.Getopt;
  * 	exits on end of user input
  *	handles multiple domains - it was a IvyWatcher problem -
  */
-class Probe implements IvyApplicationListener, IvyMessageListener, Runnable {
+package fr.dgac.ivy ;
+import java.io.*;
+import java.util.*;
+import gnu.getopt.Getopt;
+import gnu.regexp.*;
+
+public class Probe implements IvyApplicationListener, IvyMessageListener, Runnable {
+
+  public static final String helpCommands = "Available commands:\n.die CLIENTNAME sends a die message\n.direct CLIENTNAME ID MESSAGE sends the direct message to the client, with a message id set to the numerical ID\n.bye quits the application\n.quit idem\n.list lists the available clients\n.ping sends a ping request if IVY_PING is enabled\n.bind REGEXP binds to a regexp at runtime\n.unbind REGEXP unbinds to a regexp at runtime";
 
-  /**
-   *  help message for the standalone program
-   */
-  public static final String helpCommands = "Available commands:\n.die CLIENTNAME sends a die message\n.bye quits the application\n.quit idem\n.list lists the available clients\n.ping sends a ping request if IVY_PING is enabled\n.bind REGEXP binds to a regexp at runtime\n.unbind REGEXP unbinds to a regexp at runtime";
   public static final String helpmsg = "usage: java fr.dgac.ivy.Probe [options] [regexp]\n\t-b BUS\tspecifies the Ivy bus domain\n\t-n ivyname (default JPROBE)\n\t-q\tquiet, no tty output\n\t-d\tdebug\n\t-t\ttime stamp each message\n\t-h\thelp\n\n\t regexp is a Perl5 compatible regular expression";
 
   public static void main(String[] args) throws IvyException {
-    Getopt opt = new Getopt("Probe",args,"n:b:dht");
+    Getopt opt = new Getopt("Probe",args,"n:b:dqht");
     int c;
     boolean timestamp=false;
+    boolean quiet=false;
     String domain=Ivy.getDomain(null);
     String name="JPROBE";
     while ((c = opt.getopt()) != -1) switch (c) {
-    case 'b':
-      domain=opt.getOptarg();
-      break;
-    case 'n':
-      name=opt.getOptarg();
-      break;
-    case 't':
-      timestamp=true;
-      break;
     case 'd':
       Properties sysProp = System.getProperties();
       sysProp.put("IVY_DEBUG","yes");
-      //System.setProperty("IVY_DEBUG","yes");
       break;
+    case 'b': domain=opt.getOptarg(); break;
+    case 'n': name=opt.getOptarg(); break;
+    case 'q': quiet=true; break;
+    case 't': timestamp=true; break;
     case 'h':
-    default:
-	System.out.println(helpmsg);
-	System.exit(0);
-    } // getopt
-    Probe p = new Probe(timestamp);
-    Ivy bus=new Ivy(name,name+" ready",p);
+    default: System.out.println(helpmsg); System.exit(0);
+    }
+    Probe p = new Probe(new BufferedReader(new InputStreamReader(System.in)),timestamp,quiet,System.getProperty("IVY_DEBUG")!=null);
+    p.setExitOnDie(true);
+    Ivy bus=new Ivy(name,name+" ready",null);
     for (int i=opt.getOptind();i<args.length;i++) {
-      System.out.println("you want to subscribe to " + args[i]);
+      if (!quiet) System.out.println("you want to subscribe to " + args[i]);
       bus.bindMsg(args[i],p);
     }
-    System.out.println(bus.domains(domain));
+    if (!quiet) System.out.println(bus.domains(domain));
     bus.start(domain);
     p.start(bus);
   }
@@ -78,75 +80,94 @@ class Probe implements IvyApplicationListener, IvyMessageListener, Runnable {
   private BufferedReader in;
   private volatile Thread looperThread;
   private Ivy bus;
-  private boolean timestamp;
+  private boolean timestamp,quiet,debug,exitOnDie=false;
+  private RE directMsgRE;
 
-  Probe(boolean timestamp) {
-    in = new BufferedReader(new InputStreamReader(System.in));
-    looperThread=new Thread(this);
+
+  public Probe(BufferedReader in, boolean timestamp,boolean quiet,boolean debug) {
+    this.in=in;
     this.timestamp=timestamp;
+    this.quiet=quiet;
+    this.debug = debug;
+    try {
+      directMsgRE = new RE("^\\.direct ([^ ]*) ([0-9]+) (.*)");
+    } catch (REException ree) {
+      System.err.println("Regexp fatal error in the Probe program.");
+      ree.printStackTrace();
+      System.exit(0);
+    }
   }
 
-  public void start(Ivy bus) {
+  public void start(Ivy bus) throws IvyException {
+    if (looperThread!=null) throw new IvyException("Probe already started");
     this.bus=bus;
+    bus.addApplicationListener(this);
+    looperThread=new Thread(this);
     looperThread.start();
   }
 
+  public void setExitOnDie(boolean b) { exitOnDie=b; }
+
   public void run() {
-    // System.out.println("Probe Thread started"); // THREADDEBUG
+    traceDebug("Thread started");
     Thread thisThread=Thread.currentThread();
     String s;
+    // "infinite" loop on keyboard input
     while (looperThread==thisThread) {
-      // infinite loop on keyboard input
       try {
 	s=in.readLine();
+	if (s==null) break;
 	parseCommand(s);
       } catch (NullPointerException e) {
 	// EOF triggered by a ^D, for instance
-	bus.stop();
+	break;
       } catch (IOException e) {
-	System.out.println("ioe ?");
-	e.printStackTrace();
-	bus.stop();
-      } catch (InterruptedException ie) {
-	System.out.println("allo ?");
+	// System input was closed
+	break;
       }
-    } //while
-    System.out.println("End of looping");
-    // System.out.println("Probe Thread stopped"); // THREADDEBUG
-    System.exit(0);
+    }
+    println("End of input. Good bye !");
+    bus.stop();
+    traceDebug("Probe Thread stopped");
   }
 
-  void parseCommand(String s) throws IOException, InterruptedException {
-    // System.out.println("parsing the ["+s+"] (length "+s.length()+") string");
+  void parseCommand(String s) throws IOException {
+    REMatch result;
+    traceDebug("parsing the ["+s+"] (length "+s.length()+") string");
     // crude parsing of the ".xyz" commands
-    // TODO use regexps instends of String.lastIndexOf(String)
+    // TODO use regexps instends of String.lastIndexOf(String). Example
+    // provided with .direct !
     if (s.length()==0) {
-      System.out.println(date()+"-> Sent to " +bus.sendMsg(s)+" peers");
+      println("-> Sent to " +bus.sendMsg(s)+" peers");
+    } else if ((result=directMsgRE.getMatch(s))!=null) {
+      String target = result.toString(1);
+      int id = Integer.parseInt(result.toString(2));
+      String message = result.toString(3);
+      Vector v=bus.getIvyClientsByName(target);
+      if (v.size()==0) println("no Ivy client with  the name \""+target+"\"");
+      for (int i=0;i<v.size();i++) ((IvyClient)v.elementAt(i)).sendDirectMsg(id,message);
+      return;
     } else if (s.lastIndexOf(".die ")>=0){
       String target=s.substring(5);
       Vector v=bus.getIvyClientsByName(target);
-      if (v.size()==0) {
-	System.out.println("no Ivy client with  the name \""+target+"\"");
-      }
-      for (int i=0;i<v.size();i++) {
-	((IvyClient)v.elementAt(i)).sendDie();
-      }
+      if (v.size()==0) println("no Ivy client with  the name \""+target+"\"");
+      for (int i=0;i<v.size();i++) ((IvyClient)v.elementAt(i)).sendDie();
     } else if (s.lastIndexOf(".unbind ")>=0){
       String regexp=s.substring(8);
       if (bus.unBindMsg(regexp)) {
-        System.out.println("you want to unsubscribe to " + regexp);
+        println("you want to unsubscribe to " + regexp);
       } else {
-        System.out.println("you can't unsubscribe to " + regexp + ", your're not subscribed to it");
+        println("you can't unsubscribe to " + regexp + ", your're not subscribed to it");
       }
     } else if (s.lastIndexOf(".bind ")>=0){
       String regexp=s.substring(6);
-      System.out.println("you want to subscribe to " + regexp);
+      println("you want to subscribe to " + regexp);
       bus.bindMsg(regexp,this);
     } else if (s.lastIndexOf(".ping ")>=0){
       String target=s.substring(6);
       Vector v=bus.getIvyClientsByName(target);
       if (v.size()==0) {
-	System.out.println("no Ivy client with  the name \""+target+"\"");
+	println("no Ivy client with  the name \""+target+"\"");
       }
       for (int i=0;i<v.size();i++) {
 	((IvyClient)v.elementAt(i)).sendPing("test");
@@ -156,49 +177,48 @@ class Probe implements IvyApplicationListener, IvyMessageListener, Runnable {
       System.exit(0);
     } else if (s.lastIndexOf(".list")>=0) {
       Vector v = bus.getIvyClients();
-      System.out.println(v.size()+" clients on the bus");
+      println(v.size()+" clients on the bus");
       for (int i=0;i<v.size();i++) {
-	System.out.println("-> "+((IvyClient)v.elementAt(i)).getApplicationName());
+	println("-> "+((IvyClient)v.elementAt(i)).getApplicationName());
       }
     } else if ( s.lastIndexOf(".help")>=0) {
-      System.out.println(helpCommands);
+      println(helpCommands);
     } else if ( s.charAt(0)=='.') {
-      System.out.println("this command is not recognized");
-      System.out.println(helpCommands);
+      println("this command is not recognized");
+      println(helpCommands);
     } else {
-      System.out.println(date()+"-> Sent to " +bus.sendMsg(s)+" peers");
+      println("-> Sent to " +bus.sendMsg(s)+" peers");
     }
   } // parseCommand
 
   public void connect(IvyClient client) {
-    System.out.println(client.getApplicationName() + " connected " );
+    println(client.getApplicationName() + " connected " );
     for (java.util.Enumeration e=client.getRegexps();e.hasMoreElements();)
-      System.out.println(client.getApplicationName() + " subscribes to "
-        +e.nextElement() );
+      println(client.getApplicationName() + " subscribes to " +e.nextElement() );
   }
 
   public void disconnect(IvyClient client) {
-    System.out.println(client.getApplicationName() + " disconnected " );
+    println(client.getApplicationName() + " disconnected " );
   }
 
   public void die(IvyClient client, int id) {
-    System.out.println("received die msg from " + client.getApplicationName() );
-    Thread t = looperThread;
-    looperThread = null;
-    t.interrupt(); // TODO does'nt work
-    System.exit(0);
+    println("received die msg from " + client.getApplicationName() +" good bye");
+    /* I cannot stop the readLine(), because it is native code */
+    if (exitOnDie) System.exit(0);
   }
 
   public void directMessage(IvyClient client, int id, String arg) {
-   System.out.println(client.getApplicationName() + " direct Message "+ id + arg );
+   println(client.getApplicationName() + " direct Message "+ id + arg );
   }
 
   public void receive(IvyClient client, String[] args) {
-    String s=date()+client.getApplicationName() + " sent";
+    String s=client.getApplicationName() + " sent";
     for (int i=0;i<args.length;i++) s+=" '"+args[i]+"'";
-    System.out.println(s);
+    println(s);
   }
 
+  private void traceDebug(String s){ if (debug) System.out.println("-->Probe<-- "+s); }
+  private void println(String s){ if (!quiet) System.out.println(date()+s); }
   private String date() {
     if (!timestamp) return "";
     Date d = new Date();
-- 
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