View difference between Paste ID: DbYMfRj4 and dfrd2BvD

-local component = require("component")
+-- We require our libraries and modules here
-local modem = component.modem
+local component = require("component")
-local io = require("io")
+local modem = component.modem
-local event = require("event")
+local io = require("io")
-local fs = require("filesystem")
+local event = require("event")
-
+local fs = require("filesystem")
-ports, msgs = ...
+
-
+-- This line will allow the user to easily specify how many
-for prt = 1,ports do
+-- ports, and messages, we want to use with the program.
-modem.open(prt)
+local ports, msgs = ...
-end
+
-
+-- This ensures that the proper amount of arguments are being used,
-n = tonumber(msgs)
+-- and if not, will display proper usage of running the program
-h = fs.open("Log.txt", "a")
+if #({...}) ~= 2 then
-while n > 0 do
+  error("Usage: Logger (# of ports to listen to, starting at 1) (# of messages to write to file before program ends.", 0)
-local _, _, from, port, _, message = event.pull("modem_message")
+  return
-print("Got a message from " .. from .. " on port " .. port .. ": " .. tostring(message))
+end
-h:write("Got a message from " .. from .. " on port " .. port .. ": " .. tostring(message) .. "\n")
+
-n = n - 1
+-- You can ignore this snippet of code, unless you're
-end
+-- ping. Or unless you really want to wait half an hour
-
+-- for all ports to open. Luckily if you're running this
-for prtc = 1,ports do
+-- on a Minecraft server, you will only need to do this once,
-modem.close(prtc)
+-- so long as you set a high enough message count.
-end
+if ports == "potato" then
-
+  ports = 65535
-h:close()
+end
-
+
 -- This is to check whether or not the argument being passed
 -- as ports is actually a number, and not words or symbols.
 if not tonumber(ports) then
   error("The port needs to be a number!",0)
   return
 end
 
 -- Same thing as our first check, only here we're checking the
 -- messages amount argument.
 if not tonumber(msgs) then
   error("The amount of messages needs to be a number!", 0)
   return
 end
 
 -- Now, we have to open our ports that we want to listen to.
 -- Note the maximum on our range is the variable we defined in our
 -- first argument.
 for prt = 1,ports do
   modem.open(prt)
 end
 
 -- This is where the magic happens. This is where we open our log file, or
 -- create one if it doesn't exist, and listen for messages to write to our
 -- file until we've caught enough messages to satisfy our second argument.
 local h = io.open("Logs.txt", "a")
 for n = 1, tonumber(msgs) do
   local _, _, from, port, _, message = event.pull("modem_message")
   print("Got a message from " .. from .. " on port " .. port .. ": " .. tostring(message))
   h:write("Got a message from " .. from .. " on port " .. port .. ": " .. tostring(message) .. "\n")
 end
 
 -- Now that we have enough messages, we can close the ports we opened earlier on.
 modem.close()
 -- Notice I didn't specify a port?  That's because
 -- by default in OC, when a port isn't defined, all
 -- ports are closed when this method is called.
 
 -- Now we must close our log file to ensure that it saves.
 h:close()
 
 -- This lets the user know that the logs were successfully saved.
 -- Huzzah!
 print("Saved logs to Logs.txt.")