check for memory support

git-svn-id: https://hamlib.svn.sourceforge.net/svnroot/hamlib/trunk@2724 7ae35d74-ebe9-4afe-98af-79ac388436b8

tests/rigmem.1

@@ -2,7 +2,7 @@
 .\" First parameter, NAME, should be all caps
 .\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
 .\" other parameters are allowed: see man(7), man(1)
-.TH RIGMEM "1" "February 24, 2007" "Hamlib" "Radio Memory Operations"
+.TH RIGMEM "1" "September 13, 2009" "Hamlib" "Radio Memory Operations"
 .\" Please adjust this date whenever revising the manpage.
 .\"
 .\" Some roff macros, for reference:
@@ -130,6 +130,9 @@ library development and may be requested by the developers.
 1 if there was an invalid command line option or argument;
 .br
 2 if an error was returned by \fBHamlib\fP.
+.br
+3 the \fBHamlib\fP backend has no memory support implemented and/or
+  the rig has no memory access available.
 .SH BUGS
 This empty section...
 .SH REPORTING BUGS

tests/rigmem.c

@@ -1,5 +1,6 @@
 /*
- * rigmem.c - (C) Stephane Fillod and Thierry Leconte 2003-2005
+ * rigmem.c - (C) Thierry Leconte 2003-2005
+ *            (C) Stephane Fillod 2003-2009
  *
  * This program exercises the backup and restore of a radio
  * using Hamlib.
@@ -212,6 +213,22 @@ int main (int argc, char *argv[])
 		exit(2);
 	}
 
+    /* check channel support */
+    if (rig->caps->set_channel == NULL && rig->caps->get_channel == NULL &&
+            rig->caps->set_chan_all_cb == NULL && rig->caps->get_chan_all_cb == NULL &&
+            (rig->caps->set_mem == NULL || rig->caps->set_vfo == NULL)) {
+		fprintf(stderr, "Error: rig num %d has no memory support implemented/available.\n", 
+						my_model);
+		exit(3);
+    }
+
+    /* check channel description */
+    if (rig->caps->chan_list[0].type == 0) {
+		fprintf(stderr, "Error: rig num %d has no channel list.\n", 
+						my_model);
+		exit(3);
+    }
+
 	if (rig_file)
 		strncpy(rig->state.rigport.pathname, rig_file, FILPATHLEN);