1 files changed, 54 insertions, 0 deletions
diff --git a/src/Protocol.java b/src/Protocol.java
new file mode 100644
index 0000000..a643e39
--- /dev/null
+++ b/src/Protocol.java
@@ -0,0 +1,54 @@
+/**
+ * the Protocol magic numbers and chars
+ * @author	Yannick Jestin
+ * @author	<a href="http://www.tls.cena.fr/products/ivy/">http://www.tls.cena.fr/products/ivy/</a>
+ *
+ *  CHANGELOG:
+ *  1.2.16
+ *    introduced to remove the int enum pattern
+ */
+
+package fr.dgac.ivy;
+
+enum Protocol {
+
+     BYE(0),     /* end of the peer */
+     ADDREGEXP(1), /* the peer adds a regexp */
+     MSG(2),     /* the peer sends a message */
+     ERROR(3),    /* error message */
+     DELREGEXP(4), /* the peer removes one of his regex */
+     ENDREGEXP(5), /* no more regexp in the handshake */
+     SCHIZOTOKEN(6),  /* avoid race condition in concurrent connexions, aka BeginRegexp in other implementations */
+     DIRECTMSG(7), /* the peer sends a direct message */
+     DIE(8),   /* the peer wants us to quit */
+     PING(9),
+     PONG(10);
+
+    final static char STARTARG = '\u0002';/* begin of arguments */
+    final static char ENDARG = '\u0003'; /* end of arguments */
+    final static char ESCAPE = '\u001A';
+    final static char NEWLINE = '\n';
+    final static int PROTOCOLVERSION = 3 ;
+    final static int PROTOCOLMINIMUM = 3 ;
+    final static int MI = 3 ;
+
+    private int value = -1;
+    private Protocol(int v) {this.value = v;}
+
+    int value() {return value;}
+
+    static Protocol fromString(String s) throws IvyException {
+      try {
+	return fromInt(Integer.parseInt(s));
+      } catch (NumberFormatException nfe) {
+	throw new IvyException("protocol problem: "+s+" is not a valid integer");
+      }
+    }
+
+    static Protocol fromInt(int i) throws IvyException {
+      for (Protocol p : Protocol.values())
+	if (p.value() == i) return p;
+      throw new IvyException("protocol magic number "+i+" not known");
+    }
+  
+}