Alternative folder setup for custom files, override MenuBar.cpp

Signed-off-by: falkTX <falktx@falktx.com>

src/override/asset.cpp

@@ -0,0 +1,84 @@
+/*
+ * DISTRHO Cardinal Plugin
+ * Copyright (C) 2021 Filipe Coelho <falktx@falktx.com>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 3 of
+ * the License, or any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * For a full copy of the GNU General Public License see the LICENSE file.
+ */
+
+#include <asset.hpp>
+#include <system.hpp>
+#include <plugin/Plugin.hpp>
+
+#include <algorithm>
+
+#include "DistrhoUtils.hpp"
+
+namespace rack {
+namespace asset {
+
+std::string userDir; // ignored
+std::string systemDir; // points to plugin resources dir (or installed/local Rack dir)
+std::string bundlePath; // points to plugin manifests dir (or empty)
+
+// get rid of "res/" prefix
+static inline std::string& trim(std::string& s)
+{
+    if (std::strncmp(s.c_str(), "res" DISTRHO_OS_SEP_STR, 4) == 0)
+        s = s.substr(4, s.size()-4);
+#if DISTRHO_OS_SEP != '/'
+    if (std::strncmp(s.c_str(), "res/", 4) == 0)
+        s = s.substr(4, s.size()-4);
+#endif
+    return s;
+}
+
+// ignored, returns the same as `system`
+std::string user(std::string filename) {
+    return system(filename);
+}
+
+// get system resource, trimming "res/" prefix if we are loaded as a plugin bundle
+std::string system(std::string filename) {
+    return system::join(systemDir, bundlePath.empty() ? filename : trim(filename));
+}
+
+// get plugin resource, also trims "res/" as needed
+std::string plugin(plugin::Plugin* plugin, std::string filename) {
+    DISTRHO_SAFE_ASSERT_RETURN(plugin != nullptr, {});
+    return system::join(plugin->path, bundlePath.empty() ? filename : trim(filename));
+}
+
+// path to plugin manifest
+std::string pluginManifest(const std::string& dirname) {
+    if (bundlePath.empty())
+    {
+        if (dirname == "Core")
+            return system::join(systemDir, "Core.json");
+        return system::join(systemDir, "..", "..", "plugins", dirname, "plugin.json");
+    }
+    return system::join(bundlePath, dirname + ".json");
+}
+
+// path to plugin files
+std::string pluginPath(const std::string& dirname) {
+    if (bundlePath.empty())
+    {
+        if (dirname == "Core")
+            return systemDir;
+        return system::join(systemDir, "..", "..", "plugins", dirname);
+    }
+    return system::join(systemDir, dirname);
+}
+
+}
+}