Add va_list variant of lilv_plugin_get_num_ports_of_class() (#758).

git-svn-id: http://svn.drobilla.net/lad/trunk/lilv@4858 a436a847-0d15-0410-975c-d299462d15a1

2 files changed, 23 insertions, 4 deletions

diff --git a/lilv/lilv.h b/lilv/lilv.h
index 30bb3f5..5ef5e59 100644
--- a/lilv/lilv.h
+++ b/lilv/lilv.h
@@ -21,6 +21,7 @@
 #ifndef LILV_LILV_H
 #define LILV_LILV_H
 
+#include <stdarg.h>
 #include <stddef.h>
 #include <stdint.h>
 #include <stdio.h>
@@ -858,6 +859,19 @@ uint32_t
 lilv_plugin_get_num_ports_of_class(const LilvPlugin* p,
                                    const LilvNode*   class_1, ...);
 
+#ifndef SWIG
+/**
+   Variant of lilv_plugin_get_num_ports_of_class() that takes a va_list.
+
+   This function calls va_arg() on @p args but does not call va_end().
+*/
+LILV_API
+uint32_t
+lilv_plugin_get_num_ports_of_class_va(const LilvPlugin* p,
+                                      const LilvNode*   class_1,
+                                      va_list           args);
+#endif
+
 /**
    Return whether or not the plugin introduces (and reports) latency.
    The index of the latency port can be found with lilv_plugin_get_latency_port
diff --git a/lilv/lilvmm.hpp b/lilv/lilvmm.hpp
index 67fbbc4..2ce29f8 100644
--- a/lilv/lilvmm.hpp
+++ b/lilv/lilvmm.hpp
@@ -206,10 +206,15 @@ struct Plugin {
 			me, min_values, max_values, def_values);
 	}
 
-	inline unsigned get_num_ports_of_class(LilvNode* class_1,
-	                                       LilvNode* class_2) {
-		// TODO: varargs
-		return lilv_plugin_get_num_ports_of_class(me, class_1, class_2, NULL);
+	inline unsigned get_num_ports_of_class(LilvNode* class_1, ...) {
+		va_list args;
+		va_start(args, class_1);
+
+		const uint32_t count = lilv_plugin_get_num_ports_of_class_va(
+			me, class_1, args);
+
+		va_end(args);
+		return count;
 	}
 
 	const LilvPlugin* me;