forked from Hyperion/HyperionOS
309 lines
9.7 KiB
Lua
309 lines
9.7 KiB
Lua
--:Minify:--
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local BOOT_DRIVE_PATH="/$"
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local term = term
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local os = os
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-- Function to write text to the terminal with special character handling
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local function write(text)
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local x, y = term.getCursorPos()
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local w, h = term.getSize()
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for i = 1, #text do
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local c = text:sub(i, i)
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if c == "\n" then
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y = y + 1
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x = 1
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elseif c == "\t" then
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local tabSize = 4
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local spaces = tabSize - ((x - 1) % tabSize)
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term.write(string.rep(" ", spaces))
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x = x + spaces
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elseif c == "\b" then
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if x > 1 then
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x = x - 1
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term.setCursorPos(x, y)
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term.write(" ")
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term.setCursorPos(x, y)
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end
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else
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if x <= w and y <= h then
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term.setCursorPos(x, y)
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term.write(c)
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x = x + 1
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end
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end
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-- Handle wrapping if we go past right edge
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if x > w then
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x = 1
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y = y + 1
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end
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-- Handle scrolling if we go past bottom
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if y-1 > h then
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term.scroll(1)
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y = h
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term.setCursorPos(x, y)
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end
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end
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term.setCursorPos(x, y)
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end
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-- Function to display critical errors and halt the system
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local function displaySuperBadError(err)
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term.setBackgroundColor(0x1)
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term.setTextColor(0x4)
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term.clear()
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term.setCursorPos(1, 1)
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term.write("A critical error occurred while loading the system:")
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term.setCursorPos(1, 3)
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write(err)
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while true do end
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end
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-- Wrap all in xpcall to catch errors
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local ok, err = xpcall(function()
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local apis={}
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-- List of standard Lua globals
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local lua = {
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coroutine = true,
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debug = true,
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_HOST = true,
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_VERSION = true,
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assert = true,
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collectgarbage = true,
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error = true,
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gcinfo = true,
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getfenv = true,
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getmetatable = true,
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ipairs = true,
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__inext = true,
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load = true,
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math = true,
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next = true,
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pairs = true,
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pcall = true,
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rawequal = true,
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rawget = true,
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rawlen = true,
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rawset = true,
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select = true,
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setfenv = true,
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setmetatable = true,
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string = true,
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table = true,
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tonumber = true,
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tostring = true,
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type = true,
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xpcall = true,
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_G=true
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}
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-- Move all non-Lua standard library globals into the apis table
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local debug = debug
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for i,v in pairs(_G) do
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if not lua[i] or lua[i]==nil then
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apis[i]=v
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_G[i]=nil
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end
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end
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function sleep(time)
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local stoptime = apis.os.clock() + (time)
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while stoptime > apis.os.clock() do end
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end
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-- Set up terminal default colors
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apis.term.setPaletteColor(0x1, 0x000000) -- #000000
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apis.term.setPaletteColor(0x2, 0xFFFFFF) -- #FFFFFF
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apis.term.setPaletteColor(0x4, 0xFF0000) -- #FF0000
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apis.term.setPaletteColor(0x8, 0x00FF00) -- #00FF00
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apis.term.setPaletteColor(0x10, 0x0000FF) -- #0000FF
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apis.term.setPaletteColor(0x20, 0x00FFFF) -- #00FFFF
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apis.term.setPaletteColor(0x40, 0xFF00FF) -- #FF00FF
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apis.term.setPaletteColor(0x80, 0xFFFF00) -- #FFFF00
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apis.term.setPaletteColor(0x100, 0xFF6D00) -- #FF6D00
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apis.term.setPaletteColor(0x200, 0x6DFF55) -- #6DFF55
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apis.term.setPaletteColor(0x400, 0x24FFFF) -- #24FFFF
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apis.term.setPaletteColor(0x800, 0x924900) -- #924900
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apis.term.setPaletteColor(0x1000, 0x6D6D55) -- #6D6D55
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apis.term.setPaletteColor(0x2000, 0xDBDBAA) -- #DBDBAA
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apis.term.setPaletteColor(0x4000, 0x6D00FF) -- #6D00FF
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apis.term.setPaletteColor(0x8000, 0xB6FF00) -- #B6FF00
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-- Wrapper to read files
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local function getFile(path)
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local file = apis.fs.open(path, "r")
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if not file then displaySuperBadError("Could not open file: "..path) end
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local content = file.readAll()
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file.close()
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return content
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end
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-- Load kernel first if it fails, we can't continue so we display an error
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local Kernel = load(getFile(BOOT_DRIVE_PATH.."/boot/kernel.lua"),"@Kernel")
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local initFs = load(getFile(BOOT_DRIVE_PATH.."/boot/cct/initdisks"),"@Init_disks")(apis)
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local fs = load(getFile(BOOT_DRIVE_PATH.."/boot/initfs"),"@InitFs")()
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local key = load(getFile(BOOT_DRIVE_PATH.."/boot/cct/keys.lua"),"@keyhelper")(apis)
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if not Kernel then
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displaySuperBadError("Could not load kernel.")
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end
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if not initFs then
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displaySuperBadError("Could not load initdisks.")
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end
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if not fs then
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displaySuperBadError("Could not load initfs.")
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end
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if not key then
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displaySuperBadError("Could not load key helper.")
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end
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-- Set up event queue
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local eventQueue = {}
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-- Function to queue events
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local function queueEvent(event, ...)
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table.insert(eventQueue, {event, ...})
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end
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-- Set up computer api
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local computer = {
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time = function() return apis.os.epoch("utc") end,
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clock = function() return apis.os.clock()/1000 end,
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shutdown = apis.os.shutdown,
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reboot = apis.os.reboot,
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getMachineEvent = function()
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if #eventQueue > 0 then
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return table.unpack(table.remove(eventQueue, 1))
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else
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return nil
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end
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end,
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getEEPROM = function()
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return getFile("/startup.lua")
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end,
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setEEPROM = function(_,text)
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local h = apis.fs.open("/startup.lua", "w")
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h.write(text)
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h.close()
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end
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}
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-- Set up terminal colors
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local icolors={
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[0x1] =0, -- #000000
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[0x2] =1, -- #FFFFFF
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[0x4] =2, -- #FF0000
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[0x8] =3, -- #00FF00
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[0x10] =4, -- #0000FF
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[0x20] =5, -- #00FFFF
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[0x40] =6, -- #FF00FF
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[0x80] =7, -- #FFFF00
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[0x100] =8, -- #FF6D00
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[0x200] =9, -- #6DFF55
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[0x400] =10, -- #24FFFF
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[0x800] =11, -- #924900
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[0x1000] =12, -- #6D6D55
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[0x2000] =13, -- #DBDBAA
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[0x4000] =14, -- #6D00FF
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[0x8000] =15 -- #B6FF00
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}
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local colors={
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[0]=0x0001, -- #000000
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0x0002, -- #FFFFFF
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0x0004, -- #FF0000
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0x0008, -- #00FF00
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0x0010, -- #0000FF
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0x0020, -- #00FFFF
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0x0040, -- #FF00FF
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0x0080, -- #FFFF00
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0x0100, -- #FF6D00
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0x0200, -- #6DFF55
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0x0400, -- #24FFFF
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0x0800, -- #924900
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0x1000, -- #6D6D55
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0x2000, -- #DBDBAA
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0x4000, -- #6D00FF
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0x8000 -- #B6FF00
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}
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apis.term.setBackgroundColor(0x1)
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apis.term.setTextColor(0x1000)
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apis.term.clear()
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apis.term.setCursorPos(1, 1)
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-- Make the kernel coroutine so we can hook its execution
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local kernelCoro = coroutine.create(function()
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local ok, err = xpcall(Kernel, debug.traceback, apis, initFs, "cct", "/sbin/init", {
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print=function(_,text) write(text.."\n") end,
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printInline=function(_,text) write(text) end,
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clear=function() apis.term.clear() apis.term.setCursorPos(1,1) end,
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setCursorPos=function(_,x,y) apis.term.setCursorPos(x,y) end,
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getCursorPos=function() return apis.term.getCursorPos() end,
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getSize=function() return apis.term.getSize() end,
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setBackgroundColor=function(_,color) apis.term.setBackgroundColor(colors[color]) end,
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setTextColor=function(_,color) apis.term.setTextColor(colors[color]) end,
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getBackgroundColor=function() return icolors[apis.term.getBackgroundColor()] end,
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getTextColor=function() return icolors[apis.term.getTextColor()] end
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}, computer, fs, "$")
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if not ok then
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displaySuperBadError(err)
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end
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end)
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-- Diffine a coroutine.resumeWithTimeout function to avoid hanging the system, time is in milliseconds
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function coroutine.resumeWithTimeout(co, timeout, ...)
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local startTime = computer.time()
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debug.sethook(co, function()
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if computer.time() > startTime + timeout then
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return coroutine.yield("timeout")
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end
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end, "", 1000)
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local ret = {coroutine.resume(co, ...)}
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if ret[1] and ret[2]=="timeout" then
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return "timeout"
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elseif ret[1]==false then
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return "error", ret[2]
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else
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debug.sethook(co)
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return "success", table.unpack(ret, 2)
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end
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end
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write("Loaded in "..tostring(apis.os.clock()).." seconds.\n")
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-- Main loop to run the kernel coroutine
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while true do
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local status, err = coroutine.resumeWithTimeout(kernelCoro, 50)
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apis.os.queueEvent("NoSleep")
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local exit = false
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while not exit do
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local event = {coroutine.yield()}
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if event[1] == "key" then
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queueEvent("keyPressed", 1, event[2])
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key(event, queueEvent)
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elseif event[1] == "key_up" then
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queueEvent("keyReleased", 1, event[2])
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key(event, queueEvent)
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elseif event[1] == "disk" then
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queueEvent("componentAdded", "disk")
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elseif event[1] == "disk_eject" then
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queueEvent("componentRemoved", "disk")
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elseif event[1] == "NoSleep" then
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exit=true
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end
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end
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if status == "error" or coroutine.status(kernelCoro)=="dead" then
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displaySuperBadError("Kernel error: "..tostring(err))
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coroutine.yield("key")
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end
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end
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end, debug.traceback)
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if not ok then
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displaySuperBadError("Fatal error during boot: "..err)
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end
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while true do coroutine.yield() end |