Discovery Address Importer

--[[ LanteaCraft & SGCraft ]]--
--[[   DiscoveryImporter   ]]--
--[[        by Dog         ]]--
--[[         aka           ]]--
--[[     HydrantHunter     ]]--
--[[  pastebin: AAjVTFA3   ]]--
local addressBook, newGates, numNewGates = { }, { }, 0
print("")
--# Check for necessary files and ingest data
if not fs.exists("gateList") then
  print("Unable to locate discoDialer gateList")
  print("Nothing to import to ccDHD address book\n")
  return
end
if not fs.exists("/data/DHDgates") then
  print("Unable to locate ccDHD address book")
  print("Address book will be generated in /data\n")
  if not fs.exists("/data") then fs.makeDir("/data") end
else
  local dhdData = fs.open("/data/DHDgates", "r")
  addressBook = textutils.unserialize(dhdData.readAll())
  dhdData.close()
  if #addressBook >= 23976 then
    print("ccDHD address book is FULL\n")
    return
  end
end
for address in io.lines("gateList") do
  newGates[#newGates + 1] = { name = address, addr = address, rating = "U", iris = "none", callDrop = false, note = "Added from discoDialer", loc = { x = 99999, y = 99999, z = 99999, dim = "Unknown" } } --# ...create new entry
end
if #addressBook + #newGates > 23976 then
  print("Not enough room in ccDHD address book\n")
  return
end
--# Merge address books
local matchFound = false                            --# matchFound indicates if a matching gate was found or not
for i = 1, #newGates do                             --# start cycling through the 'new' list of gates
  for j = 1, #addressBook do                        --# search the address book for a matching address
    if newGates[i].addr == addressBook[j].addr then --# if the gate is already in the address book...
      matchFound = true                             --# ...set matchFound to true and...
      break                                         --# stop the address book search loop and move on to the next gate in the 'new' list
    end
  end
  if not matchFound then                            --# if a match wasn't found...
    addressBook[#addressBook + 1] = { }             --# initialize a new address book entry
    for k, v in pairs(newGates[i]) do               --# loop through the gate entries...
      addressBook[#addressBook][k] = v              --# ...and add them to the new address book entry
    end
    numNewGates = numNewGates + 1
  else
    matchFound = false                              --# if a match was found, reset the variable for the next iteration of the loop
  end
end
--# Save data
local dhdData = fs.open("/data/DHDgates", "w")
dhdData.write(textutils.serialize(addressBook))
dhdData.close()
--# Display results
print(tostring(#newGates) .. " new addresses processed.")
print(tostring(numNewGates) .. " new addresses added.\n")