LuaTar

This allows you to modify Tape Archive (Tar)

Add the luaTar code to your script

Just append the luaTar codes to your script, put load("luaTar.lua") (or if you want you can also use load(gg.makeRequest("https://github.com/ABJ4403/luaTar/raw/main/luaTar.lua?raw=true").content) although this one isn't recommended)

Usage:

-- Add
tar.add("archive.tar","a.txt","Alpha")
tar.add("archive.tar","b.txt","Bravo")

-- Remove
tar.remove("archive.tar","b.txt")

-- Query
local fileList = tar.query("archive.tar")
for i=1,#fileList do print(fileList[i]) end

-- Extract
tar.extract("archive.tar","a.txt")

-- Header checksum integrity (Experimental, likely returns false even if its not corrupted)
tar.checkHeader("archive.tar")

Why did i make this?

Well... no one makes an easy to use lua code that modifies Tar file, mostly you will need libraries or external commands, the only native Lua implementation i saw so far either requires libraries, or barely works

Disadvantages

Because i want this to be dead simple, there will be some features missing:

• Last modified date will always be 01/01/1970_00:00:00 (Unix epoch time set to 0).
• File owner:group will always be 0:0 (root:root).
• File permission will always be 777 (owner/group/everyone will get read/write/execute permission)
• Can't extract or add folder (because Lua limitation)
• Can't modify, remove folder (logic not implemented yet cuz its too complex).
• There will be no UnixStandardTAR header, which means that you might unable to use too long names (more than ~150ish characters)

License

LuaTar is Free Software: You can use, study, share, and improve it at will. Specifically you can redistribute and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.