[adv] Shell-creating

Ok, now, I have seen many custom shells (copies of CraftOS) and I want to make one for a new program I am making, a program with it's own shell. (This program is NOT an OS, as I have already made 2, but one isn't published, even though it is awesome.)

I am wondering if there are any tutorials on how to get started with this? I haven't seen any, and none came up anywhere. If not, can someone whip up one? I am sure many people would love to create their own shell.

Thanks!

Well I'm not sure, But you could possibly override the original shell functions and make your own in your own way… I have never gotten the idea of creating a custom shell, But it might be useful.. :)/>

Something like this?

Code

local running = true
lical hist = {}
local commandChar = "/" 
local bg, txt, er
if term.IsColor and term.isColor() then
  bg, txt, er = colors.gray, colors.white, colors.red
else
  bg, txt, er = colors.black, colors.white, colors.white
end
local function prepare(str)
  local cont = {}
  for word in string.gmatch(str,"[ ^ \t ]+")
  return cont
end
local function err(str)
  term.setTextColor(er)
  print(str)
  term.setTextColor(txt)
end
local commands = {
  ["exit"] = function() running = false end;
}

--# Main loop
while running do
  local inp = read(nil,hist)
  if inp:sub(1,1) == "/" and commands[inp:sub(2,#inp)] then
    commands[inp:sub(2,#inp)]()
  else
    err("command unknown")
  end
  local prep = prepare(inp)

  if fs.exists(inp[1]) then
    shell.run(inp)
  else
    err("file not found")
  end
  table.insert(hist,inp)
end

Should work but i don't know if the "regex" is correct.

Freack100, on 16 October 2013 - 04:42 PM said:

Something like this?

Code

local running = true
lical hist = {}
local commandChar = "/"
local bg, txt, er
if term.IsColor and term.isColor() then
  bg, txt, er = colors.gray, colors.white, colors.red
else
  bg, txt, er = colors.black, colors.white, colors.white
end
local function prepare(str)
  local cont = {}
  for word in string.gmatch(str,"[ ^ \t ]+")
  return cont
end
local function err(str)
  term.setTextColor(er)
  print(str)
  term.setTextColor(txt)
end
local commands = {
  ["exit"] = function() running = false end;
}

--# Main loop
while running do
  local inp = read(nil,hist)
  if inp:sub(1,1) == "/" and commands[inp:sub(2,#inp)] then
	commands[inp:sub(2,#inp)]()
  else
	err("command unknown")
  end
  local prep = prepare(inp)

  if fs.exists(inp[1]) then
	shell.run(inp)
  else
	err("file not found")
  end
  table.insert(hist,inp)
end

Should work but i don't know if the "regex" is correct.

Ok. Thanks. I will take a look.