Interim checking, Convolution Reverb

src/MapPathFeature.cpp

@@ -0,0 +1,92 @@
+// Copyright (c) 2023 Robin Davies
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy of
+// this software and associated documentation files (the "Software"), to deal in
+// the Software without restriction, including without limitation the rights to
+// use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+// the Software, and to permit persons to whom the Software is furnished to do so,
+// subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in all
+// copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+// FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+// COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+// IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+// CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+#include "MapPathFeature.hpp"
+#include <string.h>
+#include <algorithm>
+#include "json.hpp"
+#include <sstream>
+
+
+using namespace pipedal;
+
+MapPathFeature::MapPathFeature(const std::filesystem::path &storagePath)
+:storagePath(storagePath)
+{
+    lv2_state_map_path.handle = (LV2_State_Map_Path_Handle *)this;
+    lv2_state_map_path.absolute_path = FnAbsolutePath;
+    lv2_state_map_path.abstract_path = FnAbstractPath;
+
+    lv2_state_make_path.handle = (LV2_State_Make_Path_Handle*)this;
+    lv2_state_make_path.path = FnAbsolutePath;
+
+    mapPathFeature.URI = LV2_STATE__mapPath;
+    mapPathFeature.data = (void*)&lv2_state_map_path;
+    makePathFeature.URI = LV2_STATE__makePath;
+    makePathFeature.data = (void*)&lv2_state_make_path;
+}
+
+void MapPathFeature::Prepare(MapFeature* map)
+{
+
+}
+
+
+/*static*/ char *MapPathFeature::FnAbsolutePath(
+    LV2_State_Map_Path_Handle handle,
+    const char *abstract_path)
+{
+    return ((MapPathFeature *)handle)->AbsolutePath(abstract_path);
+}
+
+char *MapPathFeature::AbsolutePath(const char *abstract_path)
+{
+    std::filesystem::path t (abstract_path);
+    if (t.is_absolute()) {
+        return strdup(abstract_path);
+    }
+    std::filesystem::path result = storagePath / t;
+    return strdup(result.c_str());
+}
+
+/*static*/
+char *MapPathFeature::FnAbstractPath(
+    LV2_State_Map_Path_Handle handle,
+    const char *absolute_path)
+{
+    return ((MapPathFeature*)handle)->AbstractPath(absolute_path);
+}
+
+char *MapPathFeature::AbstractPath(const char *absolute_path)
+{
+    if (strncmp(storagePath.c_str(),absolute_path,storagePath.length()) == 0)
+    {
+        const char*result = absolute_path + storagePath.length();
+        if (*result == '/')
+        {
+            ++result;
+            return strdup(result);
+        }
+        if (*result == '0') {
+            return strdup(result);
+        }
+    }
+    return strdup(absolute_path);
+}
+