Utility to get the resource path of the plugin bundle

plugins/editor/CMakeLists.txt

@@ -56,6 +56,8 @@ add_library(sfizz_editor STATIC EXCLUDE_FROM_ALL
     src/editor/ImageHelpers.cpp
     src/editor/NativeHelpers.h
     src/editor/NativeHelpers.cpp
+    src/editor/VSTGUIHelpers.h
+    src/editor/VSTGUIHelpers.cpp
     src/editor/layout/main.hpp
     src/editor/layout/about.hpp
     src/editor/utility/vstgui_after.h
@@ -74,7 +76,8 @@ if(APPLE)
     find_library(APPLE_CORESERVICES_LIBRARY "CoreServices")
     find_library(APPLE_FOUNDATION_LIBRARY "Foundation")
     target_sources(sfizz_editor PRIVATE
-        src/editor/NativeHelpers.mm)
+        src/editor/NativeHelpers.mm
+        src/editor/VSTGUIHelpers.mm)
     target_link_libraries(sfizz_editor PRIVATE
         "${APPLE_APPKIT_LIBRARY}"
         "${APPLE_CORESERVICES_LIBRARY}"

plugins/editor/src/editor/Editor.cpp

@@ -13,6 +13,7 @@
 #include "DlgAbout.h"
 #include "ImageHelpers.h"
 #include "NativeHelpers.h"
+#include "VSTGUIHelpers.h"
 #include "BitArray.h"
 #include "plugin/MessageUtils.h"
 #include <absl/strings/string_view.h>
@@ -274,6 +275,9 @@ void Editor::open(CFrame& frame)
 {
     Impl& impl = *impl_;
 
+    fprintf(stderr, "[sfizz] The resource path of the bundle is %s\n",
+            getResourceBasePath().u8string().c_str());
+
     impl.frame_ = &frame;
     frame.addView(impl.mainView_.get());
 

plugins/editor/src/editor/VSTGUIHelpers.cpp

@@ -0,0 +1,35 @@
+// SPDX-License-Identifier: BSD-2-Clause
+
+// This code is part of the sfizz library and is licensed under a BSD 2-clause
+// license. You should have receive a LICENSE.md file along with the code.
+// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
+
+#include "VSTGUIHelpers.h"
+#include "utility/vstgui_before.h"
+#include "vstgui/lib/platform/platformfactory.h"
+#if defined(_WIN32)
+#   include "vstgui/lib/platform/win32/win32factory.h"
+#elif defined(__APPLE__)
+#else
+#   include "vstgui/lib/platform/linux/linuxfactory.h"
+#endif
+#include "utility/vstgui_after.h"
+
+using namespace VSTGUI;
+
+#if defined(_WIN32)
+fs::path getResourceBasePath()
+{
+    Optional<UTF8String> optionalPath = getPlatformFactory().asWin32Factory()->getResourceBasePath();
+    if (!optionalPath)
+        return fs::path();
+    return fs::u8path(optionalPath->getString());
+}
+#elif defined(__APPLE__)
+    // implemented in VSTGUIHelpers.mm
+#else
+fs::path getResourceBasePath()
+{
+    return fs::u8path(getPlatformFactory().asLinuxFactory()->getResourcePath());
+}
+#endif

plugins/editor/src/editor/VSTGUIHelpers.h

@@ -0,0 +1,10 @@
+// SPDX-License-Identifier: BSD-2-Clause
+
+// This code is part of the sfizz library and is licensed under a BSD 2-clause
+// license. You should have receive a LICENSE.md file along with the code.
+// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
+
+#pragma once
+#include <ghc/fs_std.hpp>
+
+fs::path getResourceBasePath();

plugins/editor/src/editor/VSTGUIHelpers.mm

@@ -0,0 +1,26 @@
+// SPDX-License-Identifier: BSD-2-Clause
+
+// This code is part of the sfizz library and is licensed under a BSD 2-clause
+// license. You should have receive a LICENSE.md file along with the code.
+// If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
+
+#include "VSTGUIHelpers.h"
+
+#if defined(__APPLE__)
+#include "vstgui/lib/platform/mac/macfactory.h"
+#import <Foundation/Foundation.h>
+#import <CoreFoundation/CoreFoundation.h>
+
+fs::path getResourceBasePath()
+{
+    CFBundleRef bundle = VSTGUI::getPlatformFactory().asMacFactory()->getBundle();
+    if (!bundle)
+        return fs::path();
+
+    NSURL* url = (__bridge_transfer NSURL*)CFBundleCopyResourcesDirectoryURL(bundle);
+    if (!url || ![url isFileURL])
+        return fs::path();
+
+    return fs::u8path([[url path] UTF8String]);
+}
+#endif