399 lines
18 KiB
C++
399 lines
18 KiB
C++
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// Copyright Epic Games, Inc. All Rights Reserved.
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#include "UObject/PackageFileSummary.h"
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#include "UObject/Linker.h"
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#include "Serialization/StructuredArchive.h"
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#include "UObject/UObjectGlobals.h"
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FPackageFileSummary::FPackageFileSummary()
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{
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FMemory::Memzero(this, sizeof(*this));
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}
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/** Converts file version to custom version system version */
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static ECustomVersionSerializationFormat::Type GetCustomVersionFormatForArchive(int32 LegacyFileVersion)
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{
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ECustomVersionSerializationFormat::Type CustomVersionFormat = ECustomVersionSerializationFormat::Unknown;
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if (LegacyFileVersion == -2)
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{
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CustomVersionFormat = ECustomVersionSerializationFormat::Enums;
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}
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else if (LegacyFileVersion < -2 && LegacyFileVersion >= -5)
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{
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CustomVersionFormat = ECustomVersionSerializationFormat::Guids;
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}
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else if (LegacyFileVersion < -5)
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{
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CustomVersionFormat = ECustomVersionSerializationFormat::Optimized;
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}
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check(CustomVersionFormat != ECustomVersionSerializationFormat::Unknown);
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return CustomVersionFormat;
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}
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static void FixCorruptEngineVersion(int ObjectVersion, FEngineVersion& Version)
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{
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// The move of EpicInternal.txt in CL 12740027 broke checks for non-licensee builds in UGS. resulted in checks for Epic internal builds in UGS breaking, and assets being saved out with the licensee flag set.
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// Detect such assets and clear the licensee bit.
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if (ObjectVersion < VER_UE4_CORRECT_LICENSEE_FLAG && Version.GetMajor() == 4 && Version.GetMinor() == 26 && Version.GetPatch() == 0 && Version.GetChangelist() >= 12740027 && Version.IsLicenseeVersion())
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{
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Version.Set(4, 26, 0, Version.GetChangelist(), Version.GetBranch());
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}
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}
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void operator<<(FStructuredArchive::FSlot Slot, FPackageFileSummary& Sum)
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{
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FArchive& BaseArchive = Slot.GetUnderlyingArchive();
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bool bCanStartSerializing = true;
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int64 ArchiveSize = 0;
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if (BaseArchive.IsLoading())
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{
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// Sanity checks before we even start serializing the archive
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ArchiveSize = BaseArchive.TotalSize();
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const int64 MinimumPackageSize = 32; // That should get us safely to Sum.TotalHeaderSize
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bCanStartSerializing = ArchiveSize >= MinimumPackageSize;
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UE_CLOG(!bCanStartSerializing, LogLinker, Warning,
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TEXT("Failed to read package file summary, the file \"%s\" is too small (%lld bytes, expected at least %lld bytes)"),
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*BaseArchive.GetArchiveName(), ArchiveSize, MinimumPackageSize);
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}
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FStructuredArchive::FRecord Record = Slot.EnterRecord();
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if (bCanStartSerializing)
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{
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Record << SA_VALUE(TEXT("Tag"), Sum.Tag);
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}
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// only keep loading if we match the magic
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if (Sum.Tag == PACKAGE_FILE_TAG || Sum.Tag == PACKAGE_FILE_TAG_SWAPPED)
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{
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// The package has been stored in a separate endianness than the linker expected so we need to force
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// endian conversion. Latent handling allows the PC version to retrieve information about cooked packages.
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if (Sum.Tag == PACKAGE_FILE_TAG_SWAPPED)
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{
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// Set proper tag.
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Sum.Tag = PACKAGE_FILE_TAG;
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// Toggle forced byte swapping.
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if (BaseArchive.ForceByteSwapping())
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{
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BaseArchive.SetByteSwapping(false);
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}
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else
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{
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BaseArchive.SetByteSwapping(true);
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}
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}
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/**
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* The package file version number when this package was saved.
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*
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* Lower 16 bits stores the UE3 engine version
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* Upper 16 bits stores the UE4/licensee version
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* For newer packages this is -7
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* -2 indicates presence of enum-based custom versions
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* -3 indicates guid-based custom versions
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* -4 indicates removal of the UE3 version. Packages saved with this ID cannot be loaded in older engine versions
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* -5 indicates the replacement of writing out the "UE3 version" so older versions of engine can gracefully fail to open newer packages
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* -6 indicates optimizations to how custom versions are being serialized
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* -7 indicates the texture allocation info has been removed from the summary
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*/
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const int32 CurrentLegacyFileVersion = -7;
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int32 LegacyFileVersion = CurrentLegacyFileVersion;
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Record << SA_VALUE(TEXT("LegacyFileVersion"), LegacyFileVersion);
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if (BaseArchive.IsLoading())
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{
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if (LegacyFileVersion < 0) // means we have modern version numbers
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{
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if (LegacyFileVersion < CurrentLegacyFileVersion)
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{
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// we can't safely load more than this because the legacy version code differs in ways we can not predict.
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// Make sure that the linker will fail to load with it.
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Sum.FileVersionUE4 = 0;
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Sum.FileVersionLicenseeUE4 = 0;
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return;
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}
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if (LegacyFileVersion != -4)
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{
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int32 LegacyUE3Version = 0;
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Record << SA_VALUE(TEXT("LegacyUE3Version"), LegacyUE3Version);
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}
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Record << SA_VALUE(TEXT("FileVersionUE4"), Sum.FileVersionUE4);
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Record << SA_VALUE(TEXT("FileVersionLicenseeUE4"), Sum.FileVersionLicenseeUE4);
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if (LegacyFileVersion <= -2)
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{
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Sum.CustomVersionContainer.Serialize(Record.EnterField(SA_FIELD_NAME(TEXT("CustomVersions"))), GetCustomVersionFormatForArchive(LegacyFileVersion));
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}
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if (!Sum.FileVersionUE4 && !Sum.FileVersionLicenseeUE4)
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{
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#if WITH_EDITOR
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if (!GAllowUnversionedContentInEditor)
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{
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// the editor cannot safely load unversioned content
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UE_LOG(LogLinker, Warning, TEXT("Failed to read package file summary, the file \"%s\" is unversioned and we cannot safely load unversioned files in the editor."), *BaseArchive.GetArchiveName());
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return;
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}
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#endif
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// this file is unversioned, remember that, then use current versions
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Sum.bUnversioned = true;
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Sum.FileVersionUE4 = GPackageFileUE4Version;
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Sum.FileVersionLicenseeUE4 = GPackageFileLicenseeUE4Version;
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Sum.CustomVersionContainer = FCurrentCustomVersions::GetAll();
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}
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}
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else
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{
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// This is probably an old UE3 file, make sure that the linker will fail to load with it.
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Sum.FileVersionUE4 = 0;
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Sum.FileVersionLicenseeUE4 = 0;
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}
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}
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else
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{
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if (Sum.bUnversioned)
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{
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int32 Zero = 0;
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Record << SA_VALUE(TEXT("LegacyUE3version"), Zero); // LegacyUE3version
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Record << SA_VALUE(TEXT("FileVersionUE4"), Zero); // VersionUE4
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Record << SA_VALUE(TEXT("FileVersionLicenseeUE4"), Zero); // VersionLicenseeUE4
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FCustomVersionContainer NoCustomVersions;
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NoCustomVersions.Serialize(Record.EnterField(SA_FIELD_NAME(TEXT("CustomVersions"))));
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}
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else
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{
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// Must write out the last UE3 engine version, so that older versions identify it as new
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int32 LegacyUE3Version = 864;
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Record << SA_VALUE(TEXT("LegacyUE3Version"), LegacyUE3Version);
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Record << SA_VALUE(TEXT("FileVersionUE4"), Sum.FileVersionUE4);
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Record << SA_VALUE(TEXT("FileVersionLicenseeUE4"), Sum.FileVersionLicenseeUE4);
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// Serialise custom version map.
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Sum.CustomVersionContainer.Serialize(Record.EnterField(SA_FIELD_NAME(TEXT("CustomVersions"))));
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}
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}
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Record << SA_VALUE(TEXT("TotalHeaderSize"), Sum.TotalHeaderSize);
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Record << SA_VALUE(TEXT("FolderName"), Sum.FolderName);
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Record << SA_VALUE(TEXT("PackageFlags"), Sum.PackageFlags);
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#if WITH_EDITOR
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if (BaseArchive.IsLoading())
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{
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// This flag should never be saved and its reused, so we need to make sure it hasn't been loaded.
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Sum.PackageFlags &= ~PKG_NewlyCreated;
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}
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#endif // WITH_EDITOR
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if (Sum.PackageFlags & PKG_FilterEditorOnly)
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{
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BaseArchive.SetFilterEditorOnly(true);
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}
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Record << SA_VALUE(TEXT("NameCount"), Sum.NameCount) << SA_VALUE(TEXT("NameOffset"), Sum.NameOffset);
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if (!BaseArchive.IsFilterEditorOnly())
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{
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if (BaseArchive.IsSaving() || Sum.FileVersionUE4 >= VER_UE4_ADDED_PACKAGE_SUMMARY_LOCALIZATION_ID)
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{
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Record << SA_VALUE(TEXT("LocalizationId"), Sum.LocalizationId);
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}
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}
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if (Sum.FileVersionUE4 >= VER_UE4_SERIALIZE_TEXT_IN_PACKAGES)
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{
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Record << SA_VALUE(TEXT("GatherableTextDataCount"), Sum.GatherableTextDataCount) << SA_VALUE(TEXT("GatherableTextDataOffset"), Sum.GatherableTextDataOffset);
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}
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Record << SA_VALUE(TEXT("ExportCount"), Sum.ExportCount) << SA_VALUE(TEXT("ExportOffset"), Sum.ExportOffset);
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Record << SA_VALUE(TEXT("ImportCount"), Sum.ImportCount) << SA_VALUE(TEXT("ImportOffset"), Sum.ImportOffset);
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Record << SA_VALUE(TEXT("DependsOffset"), Sum.DependsOffset);
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if (BaseArchive.IsLoading() && (Sum.FileVersionUE4 < VER_UE4_OLDEST_LOADABLE_PACKAGE || Sum.FileVersionUE4 > GPackageFileUE4Version))
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{
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return; // we can't safely load more than this because the below was different in older files.
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}
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if (BaseArchive.IsSaving() || Sum.FileVersionUE4 >= VER_UE4_ADD_STRING_ASSET_REFERENCES_MAP)
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{
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Record << SA_VALUE(TEXT("SoftPackageReferencesCount"), Sum.SoftPackageReferencesCount) << SA_VALUE(TEXT("SoftPackageReferencesOffset"), Sum.SoftPackageReferencesOffset);
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}
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if (BaseArchive.IsSaving() || Sum.FileVersionUE4 >= VER_UE4_ADDED_SEARCHABLE_NAMES)
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{
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Record << SA_VALUE(TEXT("SearchableNamesOffset"), Sum.SearchableNamesOffset);
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}
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Record << SA_VALUE(TEXT("ThumbnailTableOffset"), Sum.ThumbnailTableOffset);
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PRAGMA_DISABLE_DEPRECATION_WARNINGS
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Record << SA_VALUE(TEXT("Guid"), Sum.Guid);
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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#if WITH_EDITORONLY_DATA
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if (!BaseArchive.IsFilterEditorOnly())
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{
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if (BaseArchive.IsSaving() || Sum.FileVersionUE4 >= VER_UE4_ADDED_PACKAGE_OWNER)
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{
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Record << SA_VALUE(TEXT("PersistentGuid"), Sum.PersistentGuid);
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}
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else
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{
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// By assigning the current package guid, we maintain a stable persistent guid, so we can reference this package even if it wasn't resaved.
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PRAGMA_DISABLE_DEPRECATION_WARNINGS
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Sum.PersistentGuid = Sum.Guid;
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PRAGMA_ENABLE_DEPRECATION_WARNINGS
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}
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// The owner persistent guid was added in VER_UE4_ADDED_PACKAGE_OWNER but removed in the next version VER_UE4_NON_OUTER_PACKAGE_IMPORT
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if (BaseArchive.IsLoading() && Sum.FileVersionUE4 >= VER_UE4_ADDED_PACKAGE_OWNER && Sum.FileVersionUE4 < VER_UE4_NON_OUTER_PACKAGE_IMPORT)
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{
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FGuid OwnerPersistentGuid;
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Record << SA_VALUE(TEXT("OwnerPersistentGuid"), OwnerPersistentGuid);
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}
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}
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#endif
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int32 GenerationCount = Sum.Generations.Num();
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Record << SA_VALUE(TEXT("GenerationCount"), GenerationCount);
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if (BaseArchive.IsLoading() && GenerationCount > 0)
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{
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Sum.Generations.Reset(GenerationCount);
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Sum.Generations.AddZeroed(GenerationCount);
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}
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FStructuredArchive::FStream GenerationsStream = Record.EnterStream(SA_FIELD_NAME(TEXT("Generations")));
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for (int32 i = 0; i < GenerationCount; i++)
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{
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Sum.Generations[i].Serialize(GenerationsStream.EnterElement(), Sum);
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if (BaseArchive.IsLoading() && BaseArchive.IsError())
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{
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return;
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}
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}
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if (Sum.GetFileVersionUE4() >= VER_UE4_ENGINE_VERSION_OBJECT)
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{
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if (BaseArchive.IsCooking() || (BaseArchive.IsSaving() && !FEngineVersion::Current().HasChangelist()))
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{
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FEngineVersion EmptyEngineVersion;
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Record << SA_VALUE(TEXT("SavedByEngineVersion"), EmptyEngineVersion);
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}
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else
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{
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Record << SA_VALUE(TEXT("SavedByEngineVersion"), Sum.SavedByEngineVersion);
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FixCorruptEngineVersion(Sum.GetFileVersionUE4(), Sum.SavedByEngineVersion);
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}
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}
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else
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{
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int32 EngineChangelist = 0;
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Record << SA_VALUE(TEXT("EngineChangelist"), EngineChangelist);
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if (BaseArchive.IsLoading() && EngineChangelist != 0)
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{
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Sum.SavedByEngineVersion.Set(4, 0, 0, EngineChangelist, TEXT(""));
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}
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}
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if (Sum.GetFileVersionUE4() >= VER_UE4_PACKAGE_SUMMARY_HAS_COMPATIBLE_ENGINE_VERSION)
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{
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if (BaseArchive.IsCooking() || (BaseArchive.IsSaving() && !FEngineVersion::Current().HasChangelist()))
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{
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FEngineVersion EmptyEngineVersion;
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Record << SA_VALUE(TEXT("CompatibleWithEngineVersion"), EmptyEngineVersion);
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}
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else
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{
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Record << SA_VALUE(TEXT("CompatibleWithEngineVersion"), Sum.CompatibleWithEngineVersion);
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FixCorruptEngineVersion(Sum.GetFileVersionUE4(), Sum.CompatibleWithEngineVersion);
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}
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}
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else
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{
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if (BaseArchive.IsLoading())
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{
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Sum.CompatibleWithEngineVersion = Sum.SavedByEngineVersion;
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}
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}
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Record << SA_VALUE(TEXT("CompressionFlags"), Sum.CompressionFlags);
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if (!FCompression::VerifyCompressionFlagsValid(Sum.CompressionFlags))
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{
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UE_LOG(LogLinker, Warning, TEXT("Failed to read package file summary, the file \"%s\" has invalid compression flags (%d)."), *BaseArchive.GetArchiveName(), Sum.CompressionFlags);
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Sum.FileVersionUE4 = VER_UE4_OLDEST_LOADABLE_PACKAGE - 1;
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return;
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}
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TArray<FCompressedChunk> CompressedChunks;
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Record << SA_VALUE(TEXT("CompressedChunks"), CompressedChunks);
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if (CompressedChunks.Num())
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{
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// this file has package level compression, we won't load it.
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UE_LOG(LogLinker, Warning, TEXT("Failed to read package file summary, the file \"%s\" is has package level compression (and is probably cooked). These old files cannot be loaded in the editor."), *BaseArchive.GetArchiveName());
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Sum.FileVersionUE4 = VER_UE4_OLDEST_LOADABLE_PACKAGE - 1;
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return; // we can't safely load more than this because we just changed the version to something it is not.
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}
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Record << SA_VALUE(TEXT("PackageSource"), Sum.PackageSource);
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// No longer used: List of additional packages that are needed to be cooked for this package (ie streaming levels)
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// Keeping the serialization code for backwards compatibility without bumping the package version
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TArray<FString> AdditionalPackagesToCook;
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Record << SA_VALUE(TEXT("AdditionalPackagesToCook"), AdditionalPackagesToCook);
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||
|
|
if (LegacyFileVersion > -7)
|
||
|
|
{
|
||
|
|
int32 NumTextureAllocations = 0;
|
||
|
|
Record << SA_VALUE(TEXT("NumTextureAllocations"), NumTextureAllocations);
|
||
|
|
// We haven't used texture allocation info for ages and it's no longer supported anyway
|
||
|
|
check(NumTextureAllocations == 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
Record << SA_VALUE(TEXT("AssetRegistryDataOffset"), Sum.AssetRegistryDataOffset);
|
||
|
|
Record << SA_VALUE(TEXT("BulkDataStartOffset"), Sum.BulkDataStartOffset);
|
||
|
|
|
||
|
|
if (Sum.GetFileVersionUE4() >= VER_UE4_WORLD_LEVEL_INFO)
|
||
|
|
{
|
||
|
|
Record << SA_VALUE(TEXT("WorldTileInfoDataOffset"), Sum.WorldTileInfoDataOffset);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (Sum.GetFileVersionUE4() >= VER_UE4_CHANGED_CHUNKID_TO_BE_AN_ARRAY_OF_CHUNKIDS)
|
||
|
|
{
|
||
|
|
Record << SA_VALUE(TEXT("ChunkIDs"), Sum.ChunkIDs);
|
||
|
|
}
|
||
|
|
else if (Sum.GetFileVersionUE4() >= VER_UE4_ADDED_CHUNKID_TO_ASSETDATA_AND_UPACKAGE)
|
||
|
|
{
|
||
|
|
// handle conversion of single ChunkID to an array of ChunkIDs
|
||
|
|
if (BaseArchive.IsLoading())
|
||
|
|
{
|
||
|
|
int ChunkID = -1;
|
||
|
|
Record << SA_VALUE(TEXT("ChunkID"), ChunkID);
|
||
|
|
|
||
|
|
// don't load <0 entries since an empty array represents the same thing now
|
||
|
|
if (ChunkID >= 0)
|
||
|
|
{
|
||
|
|
Sum.ChunkIDs.Add(ChunkID);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (BaseArchive.IsSaving() || Sum.FileVersionUE4 >= VER_UE4_PRELOAD_DEPENDENCIES_IN_COOKED_EXPORTS)
|
||
|
|
{
|
||
|
|
Record << SA_VALUE(TEXT("PreloadDependencyCount"), Sum.PreloadDependencyCount) << SA_VALUE(TEXT("PreloadDependencyOffset"), Sum.PreloadDependencyOffset);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
Sum.PreloadDependencyCount = -1;
|
||
|
|
Sum.PreloadDependencyOffset = 0;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
FArchive& operator<<(FArchive& Ar, FPackageFileSummary& Sum)
|
||
|
|
{
|
||
|
|
FStructuredArchiveFromArchive(Ar).GetSlot() << Sum;
|
||
|
|
return Ar;
|
||
|
|
}
|
||
|
|
|
||
|
|
void FPackageFileSummary::SetCustomVersionContainer(const FCustomVersionContainer& InContainer)
|
||
|
|
{
|
||
|
|
CustomVersionContainer = InContainer;
|
||
|
|
CustomVersionContainer.SortByKey();
|
||
|
|
}
|