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d1060bb972
- Cleaned up some allocations caused by string manipulation. *Add a place for shared utility code that could have use in multiple places in the virtualization system. - First utility is a function to generate a file path based off a FPayloadId. - The path produced is similar to how we organize files in the DDC but instead of 0->9 we use the range 0->ff in hex. - To generate the path we take the string form of FPayloadId and then use the first 6 characters to create the directories (each directory using 2 characters) and then the remaining 34 characters becomes the filename. #rb Stefan.Boberg #rnx #ushell-cherrypick of 16167644 by paul.chipchase #preflight 608f9330f5b27a0001b2d5ab [CL 16182581 by paul chipchase in ue5-main branch]
45 lines
1.4 KiB
C++
45 lines
1.4 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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#pragma once
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#include "Containers/StringFwd.h"
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#include "Containers/UnrealString.h"
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namespace UE::Virtualization
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{
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class FPayloadId;
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} // namespace UE::Virtualization
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namespace UE::Virtualization::Utils
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{
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/**
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* Converts a FPayloadId into a file path.
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*
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* This utility will take a FPayloadId and return a file path that is
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* 3 directories deep. The first six characters of the id will be used to
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* create the directory names, with each directory using two characters.
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* The remaining thirty four characters will be used as the file name.
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* Lastly the extension '.payload' will be applied to complete the path/
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* Example: FPayloadId 0139d6d5d477e32dfd2abd3c5bc8ea8507e8eef8 becomes
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* 01/39/d6/d5d477e32dfd2abd3c5bc8ea8507e8eef8.payload'
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*
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* @param Id The payload identifier used to create the file path.
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* @param OutPath Will be reset and then assigned the resulting file path.
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* The string builder must have a capacity of at least 52 characters
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to avoid reallocation.
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*/
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void PayloadIdToPath(const FPayloadId& Id, FStringBuilderBase& OutPath);
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/**
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* Converts a FPayloadId into a file path.
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*
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* See above for further details
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*
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* @param Id The payload identifier used to create the file path.
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* @return The resulting file path.
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*/
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FString PayloadIdToPath(const FPayloadId& Id);
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} // namespace UE::Virtualization::Utils
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