A Blackmagic Design Fusion LUA script example to copy items into the clipboard using xclip (Linux), clip (Windows), and pbcopy (macOS)

Copy to Clipboard.lua

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-- Copy to Clipboard Script for Fusion - 2017-03-13 06.27 AM 
-- by Andrew Hazelden
-- www.andrewhazelden.com
-- [email protected]
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-- Display the extra debugging verbosity detail in the console log
printStatus = true
-- printStatus = false

-- Find out if we are running Fusion 6, 7, or 8
local fu_major_version = math.floor(tonumber(eyeon._VERSION))

-- Find out the current operating system platform. The platform local variable should be set to either 'Windows', 'Mac', or 'Linux'.
local platform = ''
if string.find(comp:MapPath('Fusion:\\'), 'Program Files', 1) then
  -- Check if the OS is Windows by searching for the Program Files folder
  platform = 'Windows'
elseif string.find(comp:MapPath('Fusion:\\'), 'PROGRA~1', 1) then
  -- Check if the OS is Windows by searching for the Program Files folder
  platform = 'Windows'
elseif string.find(comp:MapPath('Fusion:\\'), 'Applications', 1) then
  -- Check if the OS is Mac by searching for the Applications folder
  platform = 'Mac'
else
  platform = 'Linux'
end


-- Copy text to the operating system's clipboard
-- Example: CopyToClipboard('Hello World!')
function CopyToClipboard(textString)
  -- The system temporary directory path (Example: $TEMP/DomemasterFusionMacros/)
  outputDirectory = comp:MapPath('Temp:\\DomemasterFusionMacros\\')
  clipboardTempFile = outputDirectory .. 'ClipboardText.txt'

  -- Create the temp folder if required
  os.execute('mkdir "' .. outputDirectory..'"')

  -- Open up the file pointer for the output textfile
  outClipFile, err = io.open(clipboardTempFile,'w')
  if err then 
    print("[Error Opening Clipboard Temporary File for Writing]")
    return
  end

  outClipFile:write(textString,'\n')

  -- Close the file pointer on the output textfile
  outClipFile:close()

  if platform == 'Windows' then
    -- The Windows copy to clipboard command is "clip"
    command = 'clip < "' .. clipboardTempFile .. '"'
  elseif platform == 'Mac' then
    -- The Mac copy to clipboard command is "pbcopy"
    command = 'pbcopy < "' .. clipboardTempFile .. '"'
  elseif platform == 'Linux' then
    -- The Linux copy to clipboard command is "xclip"
    -- This requires a custom xclip tool install on Linux:
  
    -- Debian/Ubuntu:
    -- sudo apt-get install xclip
  
    -- Redhat/Centos/Fedora:
    -- yum install xclip
    command = 'cat "' .. clipboardTempFile .. '" | xclip -selection clipboard &'
  end

  if printStatus == 1 or printStatus == true then
    print('[Copy Text to Clipboard Command] ' .. command)
    print('[Clipboard] ' .. textString)
  end
  os.execute(command)
end

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-- Copy Text to the clipboard
-- CopyToClipboard('Hello World!')

-- Copy the selected Loader node filepath to the clipboard
selectedNode = comp.ActiveTool
CopyToClipboard(selectedNode.Output[comp.CurrentTime].Metadata.Filename)