Implement URI unmap extension and use it to serialise JSON dictionary keys.

git-svn-id: http://svn.drobilla.net/lad/trunk/ingen@2637 a436a847-0d15-0410-975c-d299462d15a1

2 files changed, 61 insertions, 3 deletions

diff --git a/src/shared/LV2URIMap.cpp b/src/shared/LV2URIMap.cpp
index d77721d1..623ad69d 100644
--- a/src/shared/LV2URIMap.cpp
+++ b/src/shared/LV2URIMap.cpp
@@ -115,6 +115,13 @@ LV2URIMap::LV2URIMap()
 	uri_map_feature_data.callback_data = this;
 	uri_map_feature.URI = LV2_URI_MAP_URI;
 	uri_map_feature.data = &uri_map_feature_data;
+
+	uri_unmap_feature_data.id_to_uri = &LV2URIMap::uri_unmap_id_to_uri;
+	uri_unmap_feature_data.callback_data = this;
+	uri_unmap_feature.URI = LV2_URI_UNMAP_URI;
+	uri_unmap_feature.data = &uri_unmap_feature_data;
+
+	_unmap_feature = SharedPtr<UnmapFeature>(new UnmapFeature(*this));
 }
 
 
@@ -129,13 +136,41 @@ LV2URIMap::uri_to_id(const char* map,
 }
 
 
+const char*
+LV2URIMap::id_to_uri(const char*    map,
+                     const uint32_t id)
+{
+	// FIXME: Handle event map properly
+	return g_quark_to_string(id);
+}
+
+
 uint32_t
 LV2URIMap::uri_map_uri_to_id(LV2_URI_Map_Callback_Data callback_data,
                              const char*               map,
                              const char*               uri)
 {
+	LV2URIMap*     me = (LV2URIMap*)callback_data;
+	const uint32_t id = me->uri_to_id(map, uri);
+	
+	// FIXME: Handle event type map properly
+	assert(!map || strcmp(map, "http://lv2plug.in/ns/ext/event") || id <= UINT16_MAX);
+
+	return id;
+}
+
+
+const char*
+LV2URIMap::uri_unmap_id_to_uri(LV2_URI_Map_Callback_Data callback_data,
+                               const char*               map,
+                               uint32_t                  id)
+{
 	LV2URIMap* me = (LV2URIMap*)callback_data;
-	return me->uri_to_id(map, uri);
+
+	// FIXME: Handle event type map properly
+	assert(!map || strcmp(map, "http://lv2plug.in/ns/ext/event") || id <= UINT16_MAX);
+
+	return me->id_to_uri(map, id);
 }
 
 
diff --git a/src/shared/LV2URIMap.hpp b/src/shared/LV2URIMap.hpp
index 8c645ae0..d34be8f9 100644
--- a/src/shared/LV2URIMap.hpp
+++ b/src/shared/LV2URIMap.hpp
@@ -21,6 +21,7 @@
 #include <boost/utility.hpp>
 #include "raul/URI.hpp"
 #include "lv2/http/lv2plug.in/ns/ext/uri-map/uri-map.h"
+#include "lv2/http/lv2plug.in/ns/ext/uri-unmap/uri-unmap.h"
 #include "ingen-config.h"
 #include "LV2Features.hpp"
 
@@ -28,7 +29,7 @@ namespace Ingen {
 namespace Shared {
 
 
-/** Implementation of the LV2 URI Map extension
+/** Implementation of the LV2 URI Map and URI Unmap extensions
  */
 class LV2URIMap : public boost::noncopyable, public LV2Features::Feature {
 public:
@@ -38,16 +39,38 @@ public:
 		return SharedPtr<LV2_Feature>(&uri_map_feature, NullDeleter<LV2_Feature>);
 	}
 
-	virtual uint32_t uri_to_id(const char* map, const char* uri);
+	struct UnmapFeature : public LV2Features::Feature {
+		UnmapFeature(const LV2URIMap& map) : _feature(map.uri_unmap_feature) {}
+		
+		SharedPtr<LV2_Feature> feature(Node*) {
+			return SharedPtr<LV2_Feature>(&_feature, NullDeleter<LV2_Feature>);
+		}
+
+		LV2_Feature _feature;
+	};
+
+	SharedPtr<UnmapFeature> unmap_feature() { return _unmap_feature; }
+		
+	virtual uint32_t    uri_to_id(const char* map, const char* uri);
+	virtual const char* id_to_uri(const char* map, uint32_t id);
 
 private:
 	static uint32_t uri_map_uri_to_id(LV2_URI_Map_Callback_Data callback_data,
 	                                  const char*               map,
 	                                  const char*               uri);
 
+	static const char* uri_unmap_id_to_uri(LV2_URI_Map_Callback_Data callback_data,
+	                                       const char*               map,
+	                                       const uint32_t            id);
+
 	LV2_Feature         uri_map_feature;
 	LV2_URI_Map_Feature uri_map_feature_data;
 
+	LV2_Feature           uri_unmap_feature;
+	LV2_URI_Unmap_Feature uri_unmap_feature_data;
+
+	SharedPtr<UnmapFeature> _unmap_feature;
+	
 public:
 	struct Quark : public Raul::URI {
 		Quark(const char* str);