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Create virtipheral.lua
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LDDestroier
204
virtipheral.lua
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204
virtipheral.lua
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local virtipheral = {
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-- path where virtual peripherals are stored
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peripheralPath = ".virtipheral/peripherals",
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-- default path to store the list of currently loaded peripherals
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configPath = ".virtipheral/p.lson",
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}
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-- list of currently loaded virtual peripherals
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-- K = side, V = methods
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local virtualPeripherals = {}
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local function tableCopy(tbl)
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local output = {}
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for k,v in pairs(tbl) do
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if type(v) == "table" then
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output[k] = tableCopy(v)
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else
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output[k] = v
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end
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end
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return output
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end
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local loadPeripheral = function(name)
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local path = fs.combine(virtipheral.peripheralPath, name)
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local output
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if not fs.exists(path) then -- counteract edit.lua's fixation with ending every goddamn file with ".lua"
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path = path .. ".lua"
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end
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if fs.exists(path) then
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output = dofile(path)
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return output
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else
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return false
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end
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end
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local makeNewPeripheralAPI = function(old)
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local p = {}
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p.attach = function(side, name)
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assert(type(side) == "string", "bad argument #1 to 'attach' (expected string, got " .. type(side) .. ")")
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assert(type(name) == "string", "bad argument #2 to 'attach' (expected string, got " .. type(name) .. ")")
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local methods = loadPeripheral(name)
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if methods then
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virtualPeripherals[side] = {
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name = name,
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side = side,
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methods = methods,
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}
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return true
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else
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return false
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end
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end
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p.detach = function(side)
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assert(type(side) == "string", "bad argument #1 to 'detach' (expected string, got " .. type(side) .. ")")
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virtualPeripherals[side] = nil
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end
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p.saveAttach = function(configPath)
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configPath = configPath or virtipheral.configPath
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local save = {}
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for k,v in pairs(virtualPeripherals) do
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save[k] = {
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name = v.name,
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side = v.side,
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}
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end
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local file = fs.open(configPath, "w")
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file.write(textutils.serialize(save))
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file.close()
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end
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p.loadAttach = function(configPath, additive)
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configPath = configPath or virtipheral.configPath
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local file = fs.open(configPath, "r")
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local contents = textutils.unserialize(file.readAll() or "")
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file.close()
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if not additive then
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virtualPeripherals = {}
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end
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if contents then
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for k,v in pairs(contents) do
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p.attach(v.side or k, v.name)
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end
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end
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end
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p.wrap = function(side)
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assert(type(side) == "string", "bad argument #1 to 'wrap' (expected string, got " .. type(side) .. ")")
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if virtualPeripherals[side] then
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return virtualPeripherals[side].methods
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else
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return old.wrap(side)
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end
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end
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p.call = function(side, method, ...)
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assert(type(side) == "string", "bad argument #1 to 'call' (expected string, got " .. type(side) .. ")")
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assert(type(method) == "string", "bad argument #2 to 'call' (expected string, got " .. type(method) .. ")")
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if virtualPeripherals[side] then
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if virtualPeripherals[side].methods[method] then
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virtualPeripherals[side].methods[method](...)
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else
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error("no such method", 0)
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end
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else
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return old.call(side, method, ...)
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end
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end
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p.find = function(pType)
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assert(type(pType) == "string", "bad argument #1 to 'find' (expected string, got " .. type(pType) .. ")")
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for k,v in pairs(virtualPeripherals) do
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if v.name == pType then
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return v.methods
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end
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end
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return old.find(pType)
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end
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p.getNames = function()
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local output = {}
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for k, v in pairs(virtualPeripherals) do
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output[#output + 1] = k
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end
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for k, v in pairs(old.getNames()) do
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output[#output + 1] = v
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end
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return output
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end
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p.getMethods = function(side)
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local output = {}
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local list = (virtualPeripherals[side] or {}).methods or old.wrap(side)
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if list then
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for k,v in pairs(list) do
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output[#output + 1] = k
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end
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else
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return nil
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end
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return output
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end
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p.getType = function(side)
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if virtualPeripherals[side] then
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return virtualPeripherals[side].name
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else
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return old.getType(side)
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end
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end
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p.isPresent = function(side)
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if virtualPeripherals[side] then
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return true
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elseif old.isPresent(side) then
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return true
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else
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return false
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end
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return true
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end
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return p
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end
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virtipheral.activate = function()
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if _G.virtipheralActive then
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error("Virtipheral is already running", 0)
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else
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fs.makeDir(virtipheral.peripheralPath)
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local old = tableCopy(_G.peripheral)
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for k,v in pairs(old) do
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local env = getfenv(old[k])
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env.peripheral = old
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end
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_G.__old_peripheral = old
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_G.peripheral = makeNewPeripheralAPI(old)
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_G.virtipheralActive = true
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return true
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end
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end
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virtipheral.deactivate = function()
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if not _G.virtipheralActive then
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error("Virtipheral is not running", 0)
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else
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_G.peripheral = tableCopy(_G.__old_peripheral)
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for k,v in pairs(_G.peripheral) do
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local env = getfenv(_G.peripheral[k])
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env.peripheral = _G.peripheral
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end
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_G.__old_peripheral = nil
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_G.virtipheralActive = false
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return true
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end
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end
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return virtipheral
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