OC-KittenOS/inst/instcore.lua

-- KOSNEO installer base
-- Copyright (C) 2018-2021 by KittenOS NEO contributors
--
-- Permission to use, copy, modify, and/or distribute this software for any purpose with or without fee is hereby granted.
--
-- THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF
-- THIS SOFTWARE.

$icScreen = $component.list("screen", true)()
$icGPU = $component.list("gpu", true)()

$icFilename = "Starting..."
$icBytesRemaining = 0

if $icScreen and $icGPU then
 $icGPU = $component.proxy($icGPU)
 $icGPU.bind($icScreen)
 $icGPU.setResolution(50, 5)
 $icGPU.setBackground(2^24-1)
 $icGPU.setForeground(0)
 $icGPU.fill(1, 1, 50, 5, "█")
 $icGPU.fill(1, 2, 50, 1, " ")
 $icGPU.set(2, 2, "KittenOS NEO Installer")
end

function $icOctalToNumber($a0)
 if $a0 == "" then return 0 end
 return $icOctalToNumber($a0:sub(1, -2)) * 8 + ($a0:byte(#$a0) - 48)
end

$icSectorsRead = 0
$iBlockingLen = 512
function $iBlockingHook($a0)
 if $icBytesRemaining > 0 then
  ${
  $L|icByteAdv = math.min(512, $icBytesRemaining)
  $icBytesRemaining = $icBytesRemaining - $icByteAdv
  if $icFile then
   $filesystem.write($icFile, $a0:sub(1, $icByteAdv))
   if $icBytesRemaining <= 0 then
    $filesystem.close($icFile)
    $icFile = nil
   end
  end
  $}
 else
  $icFilename = $a0:sub(1, 100):gsub("\x00", "")
  -- this sets up the reading/skipping of data
  $icBytesRemaining = $icOctalToNumber($a0:sub(125, 135))
  if $icFilename:sub(1, 2) == "./" and $icFilename ~= "./" then
   $icFilename = $icFilename:sub(3)
   if $icFilename:sub(#$icFilename) == "/" then
    $filesystem.makeDirectory($icFilename)
   else
    $icFile = $filesystem.open($icFilename, "wb")
    if $icBytesRemaining == 0 then
     $filesystem.close($icFile)
     $icFile = nil
    end
   end
  end
 end
 -- UPDATE DISPLAY --
 $icSectorsRead = $icSectorsRead + 1
 if $icScreen and $icGPU then
  $icGPU.fill(1, 2, 50, 1, " ")
  $icGPU.set(2, 2, "KittenOS NEO Installer : " .. $icFilename)
  $icGPU.fill(2, 4, 48, 1, "█")
  $icGPU.fill(2, 4, math.ceil(48 * $icSectorsRead / $$SECTORS), 1, " ")
 end
 if $icSectorsRead % 16 == 0 then
  $computer.pullSignal(0.01)
 end
 if $icSectorsRead == $$SECTORS then
  $filesystem.close($readInFile)
  $filesystem.remove("init.neoi.lua")
  $computer.shutdown(true)
 end
end