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Uncompress / Compress

Hi there,

iam trying desperately to decompress / compress the data that was compressed with the FArchiveSaveCompressedProxy

as shown in this tutorial:
https://wiki.unrealengine.com/Save_System,Read%26_Write_Any_Data_to_Compressed_Binary_Files

for the UE4 c++ part everything works fine but i am not able to find a proper library / algorythm do decompress / compress data like this in another programm that is written in c#.
Could someone point me to a library or whatever that can be used to compress / decompress data the same way the ue4 zlib thing does compression?

hmm… this is kind of old but Have you got any solution for this? I have now the same problem

If you have source code access, I strongly recommend reading the source code. Check out \Engine\Source\Runtime\Core\Private\Serialization\Archive.cpp/.h, \Engine\Source\Runtime\Core\Public\Misc\Compression.cpp/.h for the ue4 side of things and \Engine\Source\ThirdParty\zlib\zlib-<VERSION NUMBER>\ Inc and Src folders for zlib. You should now have all the information necessary to do what you’re asking for.