How to extract files from a zip file using Lua?

Question

How do I extract files using Lua?

Update: I now have the following code but it crashes every time it reaches the end of the function, but it successfully extracts al

Answer 1

It seems that you forgot to close currFile in the loop. I'm not sure why it crashes : maybe some sloppy resources management code or resource exhaustion (the number of files you can opened may be limited)...

Anyway the correct code is :

require "zip"

function ExtractZipAndCopyFiles(zipPath, zipFilename, destinationPath)
local zfile, err = zip.open(zipPath .. zipFilename)

-- iterate through each file insize the zip file
for file in zfile:files() do
    local currFile, err = zfile:open(file.filename)
    local currFileContents = currFile:read("*a") -- read entire contents of current file
    local hBinaryOutput = io.open(destinationPath .. file.filename, "wb")

    -- write current file inside zip to a file outside zip
    if(hBinaryOutput)then
        hBinaryOutput:write(currFileContents)
        hBinaryOutput:close()
    end
    currFile.close()
end

zfile:close()
end