Initial implementation of ZOOM_event().

Not really tested yet.

diff --git a/ZOOM.xs b/ZOOM.xs
index 5298f1c..ad6f4ba 100644 (file)
--- a/ZOOM.xs
+++ b/ZOOM.xs
@@ -1,4 +1,4 @@
-/* $Id: ZOOM.xs,v 1.37 2006-01-20 12:33:14 mike Exp $ */
+/* $Id: ZOOM.xs,v 1.38 2006-04-06 12:41:25 mike Exp $ */
 
 #include "EXTERN.h"
 #include "perl.h"
@@ -507,10 +507,76 @@ ZOOM_package_option_set(p, key, val)
        const char *    val
 
 # UNTESTED
+#
+# This has to be called with a single argument which is a _reference_
+# to an array -- rather than directly with an array, which is of
+# course identical to passing arbitrarily many arguments.  This is
+# because there doesn't seem to be a way to do varargs in an XS
+# function.
+#
 int
-ZOOM_event(no, cs)
-       int     no
-       ZOOM_connection *       cs
+ZOOM_event(conns)
+       SV* conns
+       INIT:
+               SV *realconns;
+               I32 n, i;
+               int res;
+               ZOOM_connection cs[100];
+       CODE:
+               /*printf("* in ZOOM_event(%p)\n", conns);*/
+               if (!SvROK(conns)) {
+                       /*printf("* argument is not a reference\n");*/
+                       RETVAL = -1;
+                       XSRETURN(1);
+               }
+               realconns = SvRV(conns);
+               /*printf("* realconns = %p\n", realconns);*/
+               if (SvTYPE(realconns) != SVt_PVAV) {
+                       /*printf("* reference is not to an array\n");*/
+                       RETVAL = -2;
+                       XSRETURN(1);
+               }
+               n = av_len((AV*) realconns);
+               n++; /* The av_len() return-value is zero-based */
+               if (n == 0) {
+                       /*printf("* No connections in referenced array\n");*/
+                       RETVAL = -3;
+                       XSRETURN(1);
+               } else if (n >= sizeof(cs)/sizeof(cs[0])) {
+                       /*printf("* Too many connections (%d)\n", (int) n);*/
+                       RETVAL = -4;
+                       XSRETURN(1);
+               }
+
+               /*printf("* n = %d\n", n);*/
+               for (i = 0; i < n; i++) {
+                   SV **connp = av_fetch((AV*) realconns, i, (I32) 0);
+                   /*printf("* %d of %d: connp = %p\n", (int) i, (int) n,connp);*/
+                   assert(connp != 0);
+                   SV *conn = *connp;
+                   /*printf("* conn = %p\n", conn);*/
+                   /*
+                    * From here on, the tests and assertions seem to
+                    * be ignored: if I pass in a reference to
+                    * something other than a ZOOM_connection, or even
+                    * if I pass a non-reference, the assertions still
+                    * pass and everything seems to work until the
+                    * segmentation fault bites.
+                    */
+                   assert(sv_derived_from(conn, "ZOOM_connection"));
+                   /*printf("* passed assert(isa(ZOOM_connection))\n");*/
+                   assert(SvROK(conn));
+                   /*printf("* passed assert SvROK()\n");*/
+                   SV *sv = (SV*) SvRV(conn);
+                   /*printf("* sv = %p\n", sv);*/
+                   IV tmp = SvIV(sv);
+                   /*printf("* tmp = %d\n", tmp);      */
+                   cs[i] = INT2PTR(ZOOM_connection, tmp);
+                   /*printf("got cs[%d] of %d = %p\n", (int) i, (int) n, cs[i]);*/
+               }
+               RETVAL = ZOOM_event((int) n, cs);
+       OUTPUT:
+               RETVAL
 
 # UNTESTED
 int