VST3 Client: Update moduleinfotool to write compatibility info from plugin

Reintegrates changes from cf9fc84669

extras/Build/CMake/JUCEUtils.cmake

@@ -949,6 +949,7 @@ function(_juce_add_vst3_manifest_helper_target)
     set(vst3_dir "${module_path}/juce_audio_processors/format_types/VST3_SDK")
     set(public_dir "${vst3_dir}/public.sdk")
     set(public_source_dir "${public_dir}/source")
+    set(public_common_dir "${public_source_dir}/common")
     set(public_vst_dir "${public_source_dir}/vst")
     set(hosting_dir "${public_vst_dir}/hosting")
 
@@ -966,8 +967,9 @@ function(_juce_add_vst3_manifest_helper_target)
     add_executable(juce_vst3_helper
         "${extra_source}"
         "${hosting_dir}/module.cpp"
+        "${public_common_dir}/memorystream.cpp"
+        "${public_common_dir}/readfile.cpp"
         "${public_dir}/samples/vst-utilities/moduleinfotool/source/main.cpp"
-        "${public_source_dir}/common/memorystream.cpp"
         "${public_vst_dir}/moduleinfo/moduleinfocreator.cpp"
         "${public_vst_dir}/moduleinfo/moduleinfoparser.cpp"
         "${public_vst_dir}/utility/stringconvert.cpp"

extras/Projucer/Source/ProjectSaving/jucer_ProjectExporter.h

@@ -245,6 +245,8 @@ public:
                 .getChildFile ("main.cpp"),
             source.getChildFile ("common")
                   .getChildFile ("memorystream.cpp"),
+            source.getChildFile ("common")
+                  .getChildFile ("readfile.cpp"),
             vst.getChildFile ("moduleinfo")
                .getChildFile ("moduleinfocreator.cpp"),
             vst.getChildFile ("moduleinfo")

modules/juce_audio_processors/format_types/VST3_SDK/JUCE_README.md

@@ -1,2 +1,5 @@
 This list details modifications made to the VST3 SDK in order to facilitate
 inclusion in JUCE.
+
+- The main.cpp of moduleinfotool was updated to include information exported
+  by the plugin's IPluginCompatibility object, if present.

modules/juce_audio_processors/format_types/VST3_SDK/public.sdk/samples/vst-utilities/moduleinfotool/source/main.cpp

@@ -35,14 +35,16 @@
 // OF THE POSSIBILITY OF SUCH DAMAGE.
 //-----------------------------------------------------------------------------
 
+#include "base/source/fcommandline.h"
+#include "pluginterfaces/base/fplatform.h"
+#include "pluginterfaces/base/iplugincompatibility.h"
+#include "pluginterfaces/vst/vsttypes.h"
+#include "public.sdk/source/common/memorystream.h"
+#include "public.sdk/source/common/readfile.h"
 #include "public.sdk/source/vst/hosting/module.h"
 #include "public.sdk/source/vst/moduleinfo/moduleinfocreator.h"
 #include "public.sdk/source/vst/moduleinfo/moduleinfoparser.h"
 #include "public.sdk/source/vst/utility/stringconvert.h"
-#include "public.sdk/source/common/readfile.h"
-#include "base/source/fcommandline.h"
-#include "pluginterfaces/vst/vsttypes.h"
-#include "pluginterfaces/base/fplatform.h"
 #include <cstdio>
 #include <fstream>
 #include <iostream>
@@ -96,6 +98,35 @@ std::optional<ModuleInfo::CompatibilityList> openAndParseCompatJSON (const std::
 	return result;
 }
 
+//------------------------------------------------------------------------
+std::optional<ModuleInfo::CompatibilityList> loadCompatibilityFromModule (const VST3::Hosting::Module& module)
+{
+	const auto& factory = module.getFactory();
+	const auto& infos = factory.classInfos();
+
+	const auto iter = std::find_if (infos.begin(), infos.end(), [&] (const auto& info)
+	{
+		return info.category() == kPluginCompatibilityClass;
+	});
+
+	if (iter == infos.end())
+		return {};
+
+	const auto compatibility = factory.createInstance<Steinberg::IPluginCompatibility> (iter->ID());
+
+	if (compatibility == nullptr)
+		return {};
+
+	Steinberg::MemoryStream stream;
+
+	if (compatibility->getCompatibilityJSON (&stream) != kResultOk)
+		return {};
+
+	const std::string_view streamView (stream.getData(), stream.getSize());
+
+	return ModuleInfoLib::parseCompatibilityJson (streamView, nullptr);
+}
+
 //------------------------------------------------------------------------
 int createJSON (const std::optional<ModuleInfo::CompatibilityList>& compat,
                 const std::string& modulePath, const std::string& moduleVersion,
@@ -111,6 +142,9 @@ int createJSON (const std::optional<ModuleInfo::CompatibilityList>& compat,
 	auto moduleInfo = ModuleInfoLib::createModuleInfo (*module, false);
 	if (compat)
 		moduleInfo.compatibility = *compat;
+	else if (auto loaded = loadCompatibilityFromModule (*module))
+		moduleInfo.compatibility = *loaded;
+
 	moduleInfo.version = moduleVersion;
 
 	std::stringstream output;