diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/port.c | 26 | ||||
| -rw-r--r-- | src/query.c | 3 |
2 files changed, 28 insertions, 1 deletions
@@ -150,6 +150,32 @@ slv2_port_has_property(SLV2Plugin p, } +bool +slv2_port_supports_event(SLV2Plugin p, + SLV2Port port, + const char* event) +{ + assert(event); + + char* query = slv2_strjoin( + "ASK WHERE {\n" + "<", librdf_uri_as_string(p->plugin_uri), "> lv2:port ?port ." + "?port lv2:symbol \"", port->symbol, "\";\n", + " lv2ev:supportsEvent <", event, "> .\n" + "}", NULL); + + librdf_query_results* results = slv2_plugin_query(p, query); + assert(librdf_query_results_is_boolean(results)); + + const bool ret = librdf_query_results_get_boolean(results); + + free(query); + librdf_free_query_results(results); + + return ret; +} + + SLV2Values slv2_port_get_value(SLV2Plugin p, SLV2Port port, diff --git a/src/query.c b/src/query.c index b226f04..6dbb47f 100644 --- a/src/query.c +++ b/src/query.c @@ -33,7 +33,8 @@ static const char* slv2_query_prefixes = "PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>\n" "PREFIX doap: <http://usefulinc.com/ns/doap#>\n" "PREFIX foaf: <http://xmlns.com/foaf/0.1/>\n" - "PREFIX lv2: <http://lv2plug.in/ns/lv2core#>\n"; + "PREFIX lv2: <http://lv2plug.in/ns/lv2core#>\n" + "PREFIX lv2ev: <http://lv2plug.in/ns/ext/event#>\n"; #if 0 char* |