1 files changed, 82 insertions, 0 deletions
diff --git a/src/persist.c b/src/persist.c
new file mode 100644
index 0000000..b893923
--- /dev/null
+++ b/src/persist.c
@@ -0,0 +1,82 @@
+/*
+  Copyright 2007-2011 David Robillard <http://drobilla.net>
+
+  Permission to use, copy, modify, and/or distribute this software for any
+  purpose with or without fee is hereby granted, provided that the above
+  copyright notice and this permission notice appear in all copies.
+
+  THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+  WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+  MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+  ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+  WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+  ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+  OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+*/
+
+#include <stdio.h>
+
+#include "lv2/lv2plug.in/ns/ext/persist/persist.h"
+
+#include "jalv_internal.h"
+
+static int
+store_callback(void*       host_data,
+               uint32_t    key,
+               const void* value,
+               size_t      size,
+               uint32_t    type,
+               uint32_t    flags)
+{
+	Jalv* jalv = (Jalv*)host_data;
+	const char* key_uri = symap_unmap(jalv->symap, key);
+	if (key_uri) {
+		printf("STORE %s\n", key_uri);
+	} else {
+		fprintf(stderr, "error: Failed to unmap URI ID %u\n", key);
+		return 1;
+	}
+	return 0;
+}
+
+static const void*
+retrieve_callback(void*     host_data,
+                  uint32_t  key,
+                  size_t*   size,
+                  uint32_t* type,
+                  uint32_t* flags)
+{
+	//Jalv* jalv = (Jalv*)host_data;
+	printf("RETRIEVE %d\n", key);
+	return 0;
+}
+
+
+void
+jalv_save(Jalv* jalv, const char* dir)
+{
+	printf("SAVE %s\n", dir);
+	const LV2_Persist* persist = (const LV2_Persist*)
+		lilv_instance_get_extension_data(jalv->instance,
+		                                 "http://lv2plug.in/ns/ext/persist");
+
+	if (persist) {
+		persist->save(lilv_instance_get_handle(jalv->instance),
+		              store_callback,
+		              jalv);
+	}
+}
+
+void
+jalv_restore(Jalv* jalv, const char* dir)
+{
+	printf("RESTORE %s\n", dir);
+	const LV2_Persist* persist = (const LV2_Persist*)
+		lilv_instance_get_extension_data(jalv->instance,
+		                                 "http://lv2plug.in/ns/ext/persist");
+	if (persist) {
+		persist->restore(lilv_instance_get_handle(jalv->instance),
+		                 retrieve_callback,
+		                 jalv);
+	}
+}