Carla/source/modules/lilv/patches/lilv_custom-changes.patch

diff --git a/lilv/lilv.h b/lilv/lilv.h
index 37dd849..760f7b5 100644
--- a/lilv/lilv.h
+++ b/lilv/lilv.h
@@ -26,8 +26,9 @@
 #include <stdint.h>
 #include <stdio.h>
 
-#include "lv2/lv2plug.in/ns/lv2core/lv2.h"
-#include "lv2/lv2plug.in/ns/ext/urid/urid.h"
+#include "lv2/lv2.h"
+#include "lv2/state.h"
+#include "lv2/urid.h"
 
 #ifdef LILV_SHARED
 #    ifdef _WIN32
@@ -564,7 +565,7 @@ lilv_world_free(LilvWorld* world);
    with special plugin bundles which are installed to a known location).
 */
 LILV_API void
-lilv_world_load_all(LilvWorld* world);
+lilv_world_load_all(LilvWorld* world, const char* lv2_path);
 
 /**
    Load a specific bundle.
@@ -1221,9 +1222,9 @@ lilv_port_get_scale_points(const LilvPlugin* plugin,
    @return A new LilvState which must be freed with lilv_state_free(), or NULL.
 */
 LILV_API LilvState*
-lilv_state_new_from_world(LilvWorld*      world,
-                          LV2_URID_Map*   map,
-                          const LilvNode* subject);
+lilv_state_new_from_world(LilvWorld*          world,
+                          const LV2_URID_Map* map,
+                          const LilvNode*     subject);
 
 /**
    Load a state snapshot from a file.
@@ -1241,18 +1242,18 @@ lilv_state_new_from_world(LilvWorld*      world,
    new memory consumed once this function returns.
 */
 LILV_API LilvState*
-lilv_state_new_from_file(LilvWorld*      world,
-                         LV2_URID_Map*   map,
-                         const LilvNode* subject,
-                         const char*     path);
+lilv_state_new_from_file(LilvWorld*          world,
+                         const LV2_URID_Map* map,
+                         const LilvNode*     subject,
+                         const char*         path);
 
 /**
    Load a state snapshot from a string made by lilv_state_to_string().
 */
 LILV_API LilvState*
-lilv_state_new_from_string(LilvWorld*    world,
-                           LV2_URID_Map* map,
-                           const char*   str);
+lilv_state_new_from_string(LilvWorld*          world,
+                           const LV2_URID_Map* map,
+                           const char*         str);
 
 /**
    Function to get a port value.
@@ -1469,7 +1470,8 @@ lilv_state_emit_port_values(const LilvState*     state,
 */
 LILV_API void
 lilv_state_restore(const LilvState*           state,
-                   LilvInstance*              instance,
+                   const LV2_State_Interface* iface,
+                   LV2_Handle                 handle,
                    LilvSetPortValueFunc       set_value,
                    void*                      user_data,
                    uint32_t                   flags,
@@ -1830,6 +1832,42 @@ LILV_API const LilvNode*
 lilv_ui_get_binary_uri(const LilvUI* ui);
 
 /**
+  Custom calls
+*/
+LILV_API LilvNode*
+lilv_plugin_get_modgui_resources_directory(const LilvPlugin* plugin);
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_stylesheet(const LilvPlugin* plugin);
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_icon_template(const LilvPlugin* plugin);
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_settings_template(const LilvPlugin* plugin);
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_template_data(const LilvPlugin* plugin);
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_screenshot(const LilvPlugin* plugin);
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_thumbnail(const LilvPlugin* plugin);
+
+LILV_API const LilvNodes*
+lilv_ui_get_supported_features(const LilvUI* ui);
+
+LILV_API const LilvNodes*
+lilv_ui_get_required_features(const LilvUI* ui);
+
+LILV_API const LilvNodes*
+lilv_ui_get_optional_features(const LilvUI* ui);
+
+LILV_API const LilvNodes*
+lilv_ui_get_extension_data(const LilvUI* ui);
+
+/**
    @}
    @}
 */
diff --git a/lilv/lilvmm.hpp b/lilv/lilvmm.hpp
index b9b3a69..1f67e81 100644
--- a/lilv/lilvmm.hpp
+++ b/lilv/lilvmm.hpp
@@ -17,6 +17,8 @@
 #ifndef LILV_LILVMM_HPP
 #define LILV_LILVMM_HPP
 
+#include "CarlaDefines.h"
+
 #include "lilv/lilv.h"
 
 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 1)
@@ -27,14 +29,12 @@
 
 namespace Lilv {
 
-static inline const char*
-uri_to_path(const char* uri) {
-	return lilv_uri_to_path(uri);
-}
-
 #define LILV_WRAP0(RT, prefix, name) \
 	inline RT name() { return lilv_ ## prefix ## _ ## name (me); }
 
+#define LILV_WRAP0_CONST(RT, prefix, name) \
+	inline RT name() const { return lilv_ ## prefix ## _ ## name (me); }
+
 #define LILV_WRAP0_VOID(prefix, name) \
 	inline void name() { lilv_ ## prefix ## _ ## name(me); }
 
@@ -65,6 +65,7 @@ uri_to_path(const char* uri) {
 #endif
 
 struct Node {
+	inline Node(LilvNode* node)       : me(node) {}
 	inline Node(const LilvNode* node) : me(lilv_node_duplicate(node)) {}
 	inline Node(const Node& copy)     : me(lilv_node_duplicate(copy.me)) {}
 
@@ -78,20 +79,26 @@ struct Node {
 
 	LILV_WRAP_CONVERSION(LilvNode);
 
-	LILV_WRAP0(char*,       node, get_turtle_token);
-	LILV_WRAP0(bool,        node, is_uri);
-	LILV_WRAP0(const char*, node, as_uri);
-	LILV_WRAP0(bool,        node, is_blank);
-	LILV_WRAP0(const char*, node, as_blank);
-	LILV_WRAP0(bool,        node, is_literal);
-	LILV_WRAP0(bool,        node, is_string);
-	LILV_WRAP0(const char*, node, as_string);
-	LILV_WRAP0(bool,        node, is_float);
-	LILV_WRAP0(float,       node, as_float);
-	LILV_WRAP0(bool,        node, is_int);
-	LILV_WRAP0(int,         node, as_int);
-	LILV_WRAP0(bool,        node, is_bool);
-	LILV_WRAP0(bool,        node, as_bool);
+	LILV_WRAP0_CONST(char*,       node, get_turtle_token);
+	LILV_WRAP0_CONST(bool,        node, is_uri);
+	LILV_WRAP0_CONST(const char*, node, as_uri);
+	LILV_WRAP0_CONST(bool,        node, is_blank);
+	LILV_WRAP0_CONST(const char*, node, as_blank);
+	LILV_WRAP0_CONST(bool,        node, is_literal);
+	LILV_WRAP0_CONST(bool,        node, is_string);
+	LILV_WRAP0_CONST(const char*, node, as_string);
+	LILV_WRAP0_CONST(bool,        node, is_float);
+	LILV_WRAP0_CONST(float,       node, as_float);
+	LILV_WRAP0_CONST(bool,        node, is_int);
+	LILV_WRAP0_CONST(int,         node, as_int);
+	LILV_WRAP0_CONST(bool,        node, is_bool);
+	LILV_WRAP0_CONST(bool,        node, as_bool);
+
+	Node& operator=(const Node& copy) {
+		lilv_node_free(me);
+		me = lilv_node_duplicate(copy.me);
+		return *this;
+	}
 
 	LilvNode* me;
 };
@@ -126,7 +133,7 @@ struct PluginClass {
 	LILV_WRAP0(LilvIter*, prefix, begin); \
 	LILV_WRAP1(LilvIter*, prefix, next, LilvIter*, i); \
 	LILV_WRAP1(bool, prefix, is_end, LilvIter*, i); \
-	const Lilv ## CT* me; \
+	const Lilv ## CT* me
 
 struct PluginClasses {
 	LILV_WRAP_COLL(PluginClasses, PluginClass, plugin_classes);
@@ -141,22 +148,24 @@ struct ScalePoints {
 struct Nodes {
 	LILV_WRAP_COLL(Nodes, Node, nodes);
 	LILV_WRAP1(bool, nodes, contains, const Node, node);
-	LILV_WRAP0(Node, nodes, get_first);
+
+	inline Node get_first() const {
+		return Node((const LilvNode*)lilv_nodes_get_first(me));
+	}
 };
 
 struct UI {
 	inline UI(const LilvUI* c_obj) : me(c_obj) {}
 	LILV_WRAP_CONVERSION(const LilvUI);
 
-	LILV_WRAP0(const LilvNode*, ui, get_uri);
-	LILV_WRAP0(const LilvNode*, ui, get_bundle_uri);
-	LILV_WRAP0(const LilvNode*, ui, get_binary_uri);
-	LILV_WRAP0(const LilvNodes*, ui, get_classes);
-	/*LILV_WRAP3(bool, ui, is_supported,
-	           LilvUISupportedFunc, supported_func,
-	           const LilvNode*,     container_type,
-	           const LilvNode**,    ui_type);*/
-	LILV_WRAP1(bool, ui, is_a, const LilvNode*, class_uri);
+	LILV_WRAP0(Node,  ui, get_uri);
+	LILV_WRAP1(bool,  ui, is_a, LilvNode*, ui_class);
+	LILV_WRAP0(Node,  ui, get_bundle_uri);
+	LILV_WRAP0(Node,  ui, get_binary_uri);
+	LILV_WRAP0(Nodes, ui, get_supported_features);
+	LILV_WRAP0(Nodes, ui, get_required_features);
+	LILV_WRAP0(Nodes, ui, get_optional_features);
+	LILV_WRAP0(Nodes, ui, get_extension_data);
 
 	const LilvUI* me;
 };
@@ -220,6 +229,13 @@ struct Plugin {
 	LILV_WRAP0(Nodes,       plugin, get_extension_data);
 	LILV_WRAP0(UIs,         plugin, get_uis);
 	LILV_WRAP1(Nodes,       plugin, get_related, Node, type);
+	LILV_WRAP0(Node,        plugin, get_modgui_resources_directory);
+	LILV_WRAP0(Node,        plugin, get_modgui_stylesheet);
+	LILV_WRAP0(Node,        plugin, get_modgui_icon_template);
+	LILV_WRAP0(Node,        plugin, get_modgui_settings_template);
+	LILV_WRAP0(Node,        plugin, get_modgui_template_data);
+	LILV_WRAP0(Node,        plugin, get_modgui_screenshot);
+	LILV_WRAP0(Node,        plugin, get_modgui_thumbnail);
 
 	inline Port get_port_by_index(unsigned index) {
 		return Port(me, lilv_plugin_get_port_by_index(me, index));
@@ -259,15 +275,13 @@ struct Instance {
 	inline Instance(LilvInstance* instance) : me(instance) {}
 
 	LILV_DEPRECATED
-	inline Instance(Plugin plugin, double sample_rate) {
-		me = lilv_plugin_instantiate(plugin, sample_rate, NULL);
-	}
+	inline Instance(Plugin plugin, double sample_rate)
+		: me(lilv_plugin_instantiate(plugin, sample_rate, NULL)) {}
 
 	LILV_DEPRECATED inline Instance(Plugin              plugin,
 	                                double              sample_rate,
-	                                LV2_Feature* const* features) {
-		me = lilv_plugin_instantiate(plugin, sample_rate, features);
-	}
+	                                LV2_Feature* const* features)
+		: me(lilv_plugin_instantiate(plugin, sample_rate, features)) {}
 
 	static inline Instance* create(Plugin              plugin,
 	                               double              sample_rate,
@@ -304,22 +318,25 @@ struct Instance {
 };
 
 struct World {
-	inline World() : me(lilv_world_new()) {}
-	inline ~World() { lilv_world_free(me); }
+	inline          World() : me(lilv_world_new()) {}
+	inline virtual ~World() { lilv_world_free(me); }
 
-	inline LilvNode* new_uri(const char* uri) {
+	inline LilvNode* new_uri(const char* uri) const {
 		return lilv_new_uri(me, uri);
 	}
-	inline LilvNode* new_string(const char* str) {
+	inline LilvNode* new_file_uri(const char* host, const char* path) const {
+		return lilv_new_file_uri(me, host, path);
+	}
+	inline LilvNode* new_string(const char* str) const {
 		return lilv_new_string(me, str);
 	}
-	inline LilvNode* new_int(int val) {
+	inline LilvNode* new_int(int val) const {
 		return lilv_new_int(me, val);
 	}
-	inline LilvNode* new_float(float val) {
+	inline LilvNode* new_float(float val) const {
 		return lilv_new_float(me, val);
 	}
-	inline LilvNode* new_bool(bool val) {
+	inline LilvNode* new_bool(bool val) const {
 		return lilv_new_bool(me, val);
 	}
 	inline Nodes find_nodes(const LilvNode* subject,
@@ -329,7 +346,7 @@ struct World {
 	}
 
 	LILV_WRAP2_VOID(world, set_option, const char*, uri, LilvNode*, value);
-	LILV_WRAP0_VOID(world, load_all);
+	LILV_WRAP1_VOID(world, load_all, const char*, lv2_path);
 	LILV_WRAP1_VOID(world, load_bundle, LilvNode*, bundle_uri);
 	LILV_WRAP0(const LilvPluginClass*, world, get_plugin_class);
 	LILV_WRAP0(const LilvPluginClasses*, world, get_plugin_classes);
@@ -337,6 +354,8 @@ struct World {
 	LILV_WRAP1(int, world, load_resource, const LilvNode*, resource);
 
 	LilvWorld* me;
+
+	CARLA_DECLARE_NON_COPY_STRUCT(World)
 };
 
 } /* namespace Lilv */
diff --git a/src/lilv_internal.h b/src/lilv_internal.h
index af8e31a..7b6e84d 100644
--- a/src/lilv_internal.h
+++ b/src/lilv_internal.h
@@ -58,7 +58,7 @@ static inline const char* dlerror(void) { return "Unknown error"; }
 #include "lilv/lilv.h"
 
 #ifdef LILV_DYN_MANIFEST
-#    include "lv2/lv2plug.in/ns/ext/dynmanifest/dynmanifest.h"
+#    include "lv2/dynmanifest.h"
 #endif
 
 /*
diff --git a/src/plugin.c b/src/plugin.c
index 5e10d7c..108ee2b 100644
--- a/src/plugin.c
+++ b/src/plugin.c
@@ -27,10 +27,11 @@
 #include "lilv_config.h"
 #include "lilv_internal.h"
 
-#include "lv2/lv2plug.in/ns/extensions/ui/ui.h"
+#include "lv2/ui.h"
 
 #define NS_DOAP (const uint8_t*)"http://usefulinc.com/ns/doap#"
 #define NS_FOAF (const uint8_t*)"http://xmlns.com/foaf/0.1/"
+#define NS_MOD  (const uint8_t*)"http://moddevices.com/ns/modgui#"
 
 static void
 lilv_plugin_init(LilvPlugin* plugin, LilvNode* bundle_uri)
@@ -930,6 +931,131 @@ lilv_plugin_get_author_homepage(const LilvPlugin* plugin)
 	return lilv_plugin_get_author_property(plugin, NS_FOAF "homepage");
 }
 
+static const SordNode*
+lilv_plugin_get_modgui(const LilvPlugin* p)
+{
+        lilv_plugin_load_if_necessary(p);
+
+        SordNode* mod_gui = sord_new_uri(
+                p->world->world, NS_MOD "gui");
+
+        SordIter* gui = lilv_world_query_internal(
+                p->world,
+                p->plugin_uri->node,
+                mod_gui,
+                NULL);
+
+        sord_node_free(p->world->world, mod_gui);
+
+        if (sord_iter_end(gui)) {
+                sord_iter_free(gui);
+                return NULL;
+        }
+
+        const SordNode* Gui = sord_iter_get_node(gui, SORD_OBJECT);
+
+        sord_iter_free(gui);
+        return Gui;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_resources_directory(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld     = plugin->world->world;
+                SordNode*  modgui_res = sord_new_uri(sworld, NS_MOD "resourcesDirectory");
+                LilvNode*  ret        = lilv_plugin_get_one(plugin, modgui, modgui_res);
+                sord_node_free(sworld, modgui_res);
+                return ret;
+        }
+        return NULL;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_stylesheet(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld       = plugin->world->world;
+                SordNode*  modgui_style = sord_new_uri(sworld, NS_MOD "stylesheet");
+                LilvNode*  ret          = lilv_plugin_get_one(plugin, modgui, modgui_style);
+                sord_node_free(sworld, modgui_style);
+                return ret;
+        }
+        return NULL;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_icon_template(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld      = plugin->world->world;
+                SordNode*  modgui_tmpl = sord_new_uri(sworld, NS_MOD "iconTemplate");
+                LilvNode*  ret         = lilv_plugin_get_one(plugin, modgui, modgui_tmpl);
+                sord_node_free(sworld, modgui_tmpl);
+                return ret;
+        }
+        return NULL;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_settings_template(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld      = plugin->world->world;
+                SordNode*  modgui_tmpl = sord_new_uri(sworld, NS_MOD "settingsTemplate");
+                LilvNode*  ret         = lilv_plugin_get_one(plugin, modgui, modgui_tmpl);
+                sord_node_free(sworld, modgui_tmpl);
+                return ret;
+        }
+        return NULL;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_template_data(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld      = plugin->world->world;
+                SordNode*  modgui_tmpl = sord_new_uri(sworld, NS_MOD "templateData");
+                LilvNode*  ret         = lilv_plugin_get_one(plugin, modgui, modgui_tmpl);
+                sord_node_free(sworld, modgui_tmpl);
+                return ret;
+        }
+        return NULL;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_screenshot(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld     = plugin->world->world;
+                SordNode*  modgui_scr = sord_new_uri(sworld, NS_MOD "screenshot");
+                LilvNode*  ret        = lilv_plugin_get_one(plugin, modgui, modgui_scr);
+                sord_node_free(sworld, modgui_scr);
+                return ret;
+        }
+        return NULL;
+}
+
+LILV_API LilvNode*
+lilv_plugin_get_modgui_thumbnail(const LilvPlugin* plugin)
+{
+        const SordNode* modgui = lilv_plugin_get_modgui(plugin);
+        if (modgui) {
+                SordWorld* sworld       = plugin->world->world;
+                SordNode*  modgui_thumb = sord_new_uri(sworld, NS_MOD "thumbnail");
+                LilvNode*  ret          = lilv_plugin_get_one(plugin, modgui, modgui_thumb);
+                sord_node_free(sworld, modgui_thumb);
+                return ret;
+        }
+        return NULL;
+}
+
 LILV_API bool
 lilv_plugin_is_replaced(const LilvPlugin* plugin)
 {
diff --git a/src/port.c b/src/port.c
index 6bf8fc7..0a50891 100644
--- a/src/port.c
+++ b/src/port.c
@@ -20,8 +20,8 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
-#include "lv2/lv2plug.in/ns/ext/event/event.h"
+#include "lv2/atom.h"
+#include "lv2/event.h"
 
 #include "lilv_internal.h"
 
diff --git a/src/state.c b/src/state.c
index 4781405..c0173b1 100644
--- a/src/state.c
+++ b/src/state.c
@@ -18,10 +18,10 @@
 #include <stdio.h>
 #include <string.h>
 
-#include "lv2/lv2plug.in/ns/ext/atom/atom.h"
-#include "lv2/lv2plug.in/ns/ext/atom/forge.h"
-#include "lv2/lv2plug.in/ns/ext/presets/presets.h"
-#include "lv2/lv2plug.in/ns/ext/state/state.h"
+#include "lv2/atom.h"
+#include "lv2/atom-forge.h"
+#include "lv2/presets.h"
+#include "lv2/state.h"
 
 #include "lilv_config.h"
 #include "lilv_internal.h"
@@ -431,40 +431,18 @@ lilv_state_emit_port_values(const LilvState*     state,
 
 LILV_API void
 lilv_state_restore(const LilvState*           state,
-                   LilvInstance*              instance,
+                   const LV2_State_Interface* iface,
+                   LV2_Handle                 handle,
                    LilvSetPortValueFunc       set_value,
                    void*                      user_data,
                    uint32_t                   flags,
                    const LV2_Feature *const * features)
 {
-	if (!state) {
-		LILV_ERROR("lilv_state_restore() called on NULL state\n");
-		return;
+	if (iface && iface->restore) {
+		iface->restore(handle, retrieve_callback,
+		               (LV2_State_Handle)state, flags, features);
 	}
 
-	LV2_State_Map_Path map_path = {
-		(LilvState*)state, abstract_path, absolute_path };
-	LV2_Feature map_feature = { LV2_STATE__mapPath, &map_path };
-
-	if (instance) {
-		const LV2_Descriptor* desc = instance->lv2_descriptor;
-		if (desc->extension_data) {
-			const LV2_State_Interface* iface = (const LV2_State_Interface*)
-				desc->extension_data(LV2_STATE__interface);
-
-			if (iface && iface->restore) {
-				const LV2_Feature** sfeatures = add_features(
-					features, &map_feature, NULL);
-
-				iface->restore(instance->lv2_handle, retrieve_callback,
-				               (LV2_State_Handle)state, flags, sfeatures);
-
-				free(sfeatures);
-			}
-		}
-	}
-
-
 	if (set_value) {
 		lilv_state_emit_port_values(state, set_value, user_data);
 	}
@@ -616,9 +594,9 @@ new_state_from_model(LilvWorld*       world,
 }
 
 LILV_API LilvState*
-lilv_state_new_from_world(LilvWorld*      world,
-                          LV2_URID_Map*   map,
-                          const LilvNode* node)
+lilv_state_new_from_world(LilvWorld*          world,
+                          const LV2_URID_Map* map,
+                          const LilvNode*     node)
 {
 	if (!lilv_node_is_uri(node) && !lilv_node_is_blank(node)) {
 		LILV_ERRORF("Subject `%s' is not a URI or blank node.\n",
@@ -630,10 +608,10 @@ lilv_state_new_from_world(LilvWorld*      world,
 }
 
 LILV_API LilvState*
-lilv_state_new_from_file(LilvWorld*      world,
-                         LV2_URID_Map*   map,
-                         const LilvNode* subject,
-                         const char*     path)
+lilv_state_new_from_file(LilvWorld*          world,
+                         const LV2_URID_Map* map,
+                         const LilvNode*     subject,
+                         const char*         path)
 {
 	if (subject && !lilv_node_is_uri(subject)
 	    && !lilv_node_is_blank(subject)) {
@@ -683,9 +661,9 @@ set_prefixes(SerdEnv* env)
 }
 
 LILV_API LilvState*
-lilv_state_new_from_string(LilvWorld*    world,
-                           LV2_URID_Map* map,
-                           const char*   str)
+lilv_state_new_from_string(LilvWorld*          world,
+                           const LV2_URID_Map* map,
+                           const char*         str)
 {
 	if (!str) {
 		return NULL;
diff --git a/src/ui.c b/src/ui.c
index 0f4f2f6..a3e17da 100644
--- a/src/ui.c
+++ b/src/ui.c
@@ -109,3 +109,54 @@ lilv_ui_get_binary_uri(const LilvUI* ui)
 {
 	return ui->binary_uri;
 }
+
+static LilvNodes*
+lilv_ui_get_value_internal(const LilvUI* ui, const SordNode* predicate)
+{
+       assert(ui);
+       return lilv_world_find_nodes_internal(ui->world, ui->uri->node, predicate, NULL);
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_supported_features(const LilvUI* ui)
+{
+       assert(ui);
+       LilvNodes* optional = lilv_ui_get_optional_features(ui);
+       LilvNodes* required = lilv_ui_get_required_features(ui);
+       LilvNodes* result   = lilv_nodes_new();
+
+       LILV_FOREACH(nodes, i, optional)
+               zix_tree_insert((ZixTree*)result, lilv_node_duplicate(lilv_nodes_get(optional, i)), NULL);
+
+       LILV_FOREACH(nodes, i, required)
+               zix_tree_insert((ZixTree*)result, lilv_node_duplicate(lilv_nodes_get(required, i)), NULL);
+
+       lilv_nodes_free(optional);
+       lilv_nodes_free(required);
+
+       return result;
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_required_features(const LilvUI* ui)
+{
+       assert(ui);
+       assert(ui->world);
+       return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_requiredFeature);
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_optional_features(const LilvUI* ui)
+{
+       assert(ui);
+       assert(ui->world);
+       return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_optionalFeature);
+}
+
+LILV_API const LilvNodes*
+lilv_ui_get_extension_data(const LilvUI* ui)
+{
+       assert(ui);
+       assert(ui->world);
+       return lilv_ui_get_value_internal(ui, ui->world->uris.lv2_extensionData);
+}
diff --git a/src/util.c b/src/util.c
index 0c1fd5e..239aa78 100644
--- a/src/util.c
+++ b/src/util.c
@@ -453,10 +453,7 @@ lilv_symlink(const char* oldpath, const char* newpath)
 	int ret = 0;
 	if (strcmp(oldpath, newpath)) {
 #ifdef _WIN32
-		ret = !CreateSymbolicLink(newpath, oldpath, 0);
-		if (ret) {
-			ret = !CreateHardLink(newpath, oldpath, 0);
-		}
+		ret = 1;
 #else
 		ret = symlink(oldpath, newpath);
 #endif
diff --git a/src/world.c b/src/world.c
index 622e0a5..04403ca 100644
--- a/src/world.c
+++ b/src/world.c
@@ -19,7 +19,7 @@
 #include <stdlib.h>
 #include <string.h>
 
-#include "lv2/lv2plug.in/ns/ext/presets/presets.h"
+#include "lv2/presets.h"
 
 #include "lilv_internal.h"
 
@@ -1009,12 +1009,8 @@ lilv_world_load_plugin_classes(LilvWorld* world)
 }
 
 LILV_API void
-lilv_world_load_all(LilvWorld* world)
+lilv_world_load_all(LilvWorld* world, const char* lv2_path)
 {
-	const char* lv2_path = getenv("LV2_PATH");
-	if (!lv2_path)
-		lv2_path = LILV_DEFAULT_LV2_PATH;
-
 	// Discover bundles and read all manifest files into model
 	lilv_world_load_path(world, lv2_path);