Copmputercraft Multiple monitor draw

--v 1.1 -- this is untested but it is supposed to make it so that you can start at a higher monitor than monitor_0 please post on the forums if there is a problem

--this is a program made by columna1 please do not claim as your own
--You have permission to edit and use this code as you please just make sure to credit me


--How to use
--make a bunch of monitors THEY ALL HAVE TO BE THE SAME SIZE all next to eachother
--make sure you make a rectangle
--connect each one with a wired modem and connect them all to the computer on the left side
--NOW LISTEN UP THIS IS IMPORTANT*********!!!!!!!!!!!!!!
--you have to connect all the monitors in a certain way
--facing the frot you need to connect each monitor from left to right starting from the first row
--then you need to go down to the second row and add from left to right one by one
--and continue one by one etc

--some tips if you mess up or already have monitors connected with modems in a world
--you can change the startmonitor variable below to specfy the first monitor
--if you accidentaly clicked one and connected it in the wrong order you can use some nbt editor to go
--to that block and set the value "peripheral id" to -1 and go to the save folder and into the computer folder
--and open the file: lastid_monitor and change it to -1 or whichever was the last correct connection

--if you already placed some:
--go to the save folder and into the computer folder
--and open the file: lastid_monitor and change it to -1


-- limitations:
--all monitors have to be the same size!
--there cant be uneven edges (it cant have a layer that is 3 wide when the rest is 4)

startmonitor = 0 -- change this is your monitors dont start at monitor_0

sm = startmonitor
modem = peripheral.wrap("left")
xmons = 8
ymons = 6
scale = 0.5
modem.callRemote("monitor_"..sm,"setTextScale",scale)
xchars,ychars = modem.callRemote("monitor_"..sm,"getSize")
arg = {...}
if fs.exists(arg[1]) == false then
    error("no such file")
end
dataa = ""
line = {}
rum = 1
l = 0
file = fs.open(arg[1],"r")
    while rum do
        rum = file.readLine()
        l = l + 1
        if rum then line[#line+1] = rum end
    end
print(l)
lines = l
file.close()
for i = 0,xmons*ymons - 1 do
    modem.callRemote("monitor_"..i+sm,"setTextScale",scale)
    modem.callRemote("monitor_"..i+sm,"clear")
end
function str(sn,stri)
    if split > 1 then
        stt = stri:sub((sn-1)*xchars,sn*xchars)
        return stt
    end
end
function printLine(line,strings)
    mon = 0
    for d = 1,ymons-1 do
        if line > ychars*d then mon = xmons*d end
    end
    split = 1
    for c = 1,xmons - 1 do
        if #strings > xchars*c then split = c+1 end
    end
    monadd = 0
    for s = 1,split do
        modem.callRemote("monitor_"..mon+monadd+sm,"setCursorPos",1,line-((mon/xmons)*ychars))
        modem.callRemote("monitor_"..mon+monadd+sm,"write",str(s,strings))
        monadd = monadd + 1
    end
end
fi = fs.open(arg[1],"r")
if ychars*ymons > lines then
    for i = 1,lines-1 do
        printLine(i,fi.readLine())
    end
else
    for i = 1,ychars*ymons do
        printLine(i,fi.readLine())
    end
end
fi.close()