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107 lines
2.8 KiB
C++
107 lines
2.8 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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#include "ProjectsPrivatePCH.h"
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#include "VersionManifest.h"
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FVersionManifest::FVersionManifest()
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{
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Changelist = 0;
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}
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FString FVersionManifest::GetFileName(const FString& DirectoryName, bool bIsGameFolder)
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{
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FString FileName = DirectoryName / FPlatformProcess::ExecutableName();
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if(FApp::GetBuildConfiguration() == EBuildConfigurations::DebugGame && bIsGameFolder)
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{
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FileName += FString::Printf(TEXT("-%s-DebugGame"), FPlatformProcess::GetBinariesSubdirectory());
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}
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return FileName + TEXT(".modules");
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}
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bool FVersionManifest::TryRead(const FString& FileName, FVersionManifest& Manifest)
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{
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// Read the file to a string
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FString Text;
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if (!FFileHelper::LoadFileToString(Text, *FileName))
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{
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return false;
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}
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// Deserialize a JSON object from the string
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TSharedPtr< FJsonObject > ObjectPtr;
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TSharedRef< TJsonReader<> > Reader = TJsonReaderFactory<>::Create(Text);
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if (!FJsonSerializer::Deserialize(Reader, ObjectPtr) || !ObjectPtr.IsValid() )
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{
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return false;
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}
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FJsonObject& Object = *ObjectPtr.Get();
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// Read the changelist and build id
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if(!Object.TryGetNumberField(TEXT("Changelist"), Manifest.Changelist) || !Object.TryGetStringField(TEXT("BuildId"), Manifest.BuildId))
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{
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return false;
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}
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// Read the module mappings
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TSharedPtr<FJsonObject> ModulesObject = Object.GetObjectField(TEXT("Modules"));
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if(ModulesObject.IsValid())
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{
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for(TPair<FString, TSharedPtr<FJsonValue>>& Pair: ModulesObject->Values)
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{
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if(Pair.Value->Type == EJson::String)
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{
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Manifest.ModuleNameToFileName.FindOrAdd(Pair.Key) = Pair.Value->AsString();
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}
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}
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}
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return true;
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}
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FVersionedModuleEnumerator::FVersionedModuleEnumerator()
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{
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}
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bool FVersionedModuleEnumerator::RegisterWithModuleManager()
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{
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FString VersionManifestFileName = FVersionManifest::GetFileName(FPlatformProcess::BaseDir(), false);
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if(!FVersionManifest::TryRead(VersionManifestFileName, InitialManifest))
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{
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return false;
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}
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FModuleManager::Get().QueryModulesDelegate.BindRaw(this, &FVersionedModuleEnumerator::QueryModules);
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return true;
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}
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const FVersionManifest& FVersionedModuleEnumerator::GetInitialManifest() const
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{
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return InitialManifest;
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}
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void FVersionedModuleEnumerator::QueryModules(const FString& InDirectoryName, bool bIsGameDirectory, TMap<FString, FString>& OutModules) const
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{
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FVersionManifest Manifest;
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if(FVersionManifest::TryRead(FVersionManifest::GetFileName(InDirectoryName, bIsGameDirectory), Manifest) && IsMatchingVersion(Manifest))
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{
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OutModules = Manifest.ModuleNameToFileName;
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}
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}
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bool FVersionedModuleEnumerator::IsMatchingVersion(const FVersionManifest& Manifest) const
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{
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if(InitialManifest.Changelist == 0)
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{
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return Manifest.Changelist == 0 && (InitialManifest.BuildId == Manifest.BuildId || Manifest.BuildId.Len() == 0);
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}
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else
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{
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return InitialManifest.Changelist == Manifest.Changelist;
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}
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}
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