RepackageUPK

Simple UE3 .UPK repackager or info printer.

Usage as a repackager

.UPK repackager. Requires the original .UPK file and the result of its extraction via gildor's extract tool (can be obtained at his website: https://www.gildor.org/downloads).
Will copy the .UPK and replace all the files in it with the ones found in the extracted folder.
Cannot add, remove any of the files or change their classes or paths within the package etc.

Syntax:

RepackageUPK [-dataOnly] [-info] ORIGINAL_UPK EXTRACTED_FOLDER NEW_UPK

, where:

• ORIGINAL_UPK is the path to the original .UPK file that you want to make a copy of,
• EXTRACTED_FOLDER is the path to the folder into which you extracted the contents of the ORIGINAL_UPK with gildor's tool,
  and which contains the modified files as well,
• NEW_UPK is the path, including the name and the extension, where a new .UPK copy will be created with the modified files.
  The original .UPK will not be modified.
• -dataOnly is an optional flag that prevents the tool from printing comments intended to be read by the user that are not part of JSON data structure. Such comments will however still be printed on error.
• -info is an optional flag that makes the tool also print the same info it would print in the second usage mode (info only) while performing the repackage operation.

Usage as info printer

List contents of and information about the UPK

Syntax:

RepackageUPK -info [-dataOnly] ORIGINAL_UPK

Build/run

Only runs on Windows. Should be simple enough to alter to run on Linux.
To build, open it with Visual Studio and press Build - Build Solution.
It will say where it created the .exe file in the Output panel.
You can then run the .exe with supplied arguments as explained above.