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mirror of https://github.com/SquidDev-CC/CC-Tweaked synced 2024-11-04 17:16:20 +00:00
CC-Tweaked/src/main/resources/data/computercraft/lua/bios.lua
2022-11-01 19:22:07 +00:00

1022 lines
30 KiB
Lua

-- Load in expect from the module path.
--
-- Ideally we'd use require, but that is part of the shell, and so is not
-- available to the BIOS or any APIs. All APIs load this using dofile, but that
-- has not been defined at this point.
local expect, field
do
local h = fs.open("rom/modules/main/cc/expect.lua", "r")
local f, err = loadstring(h.readAll(), "@expect.lua")
h.close()
if not f then error(err) end
local res = f()
expect, field = res.expect, res.field
end
if _VERSION == "Lua 5.1" then
-- If we're on Lua 5.1, install parts of the Lua 5.2/5.3 API so that programs can be written against it
local nativeload = load
function load(x, name, mode, env)
expect(1, x, "function", "string")
expect(2, name, "string", "nil")
expect(3, mode, "string", "nil")
expect(4, env, "table", "nil")
local ok, p1, p2 = pcall(function()
local result, err = nativeload(x, name, mode, env)
if result and env then
env._ENV = env
end
return result, err
end)
if ok then
return p1, p2
else
error(p1, 2)
end
end
if _CC_DISABLE_LUA51_FEATURES then
-- Remove the Lua 5.1 features that will be removed when we update to Lua 5.2, for compatibility testing.
-- See "disable_lua51_functions" in ComputerCraft.cfg
setfenv = nil
getfenv = nil
loadstring = nil
unpack = nil
math.log10 = nil
table.maxn = nil
else
loadstring = function(string, chunkname) return nativeload(string, chunkname) end
-- Inject a stub for the old bit library
_G.bit = {
bnot = bit32.bnot,
band = bit32.band,
bor = bit32.bor,
bxor = bit32.bxor,
brshift = bit32.arshift,
blshift = bit32.lshift,
blogic_rshift = bit32.rshift,
}
end
end
-- Install lua parts of the os api
function os.version()
return "CraftOS 1.8"
end
function os.pullEventRaw(sFilter)
return coroutine.yield(sFilter)
end
function os.pullEvent(sFilter)
local eventData = table.pack(os.pullEventRaw(sFilter))
if eventData[1] == "terminate" then
error("Terminated", 0)
end
return table.unpack(eventData, 1, eventData.n)
end
-- Install globals
function sleep(nTime)
expect(1, nTime, "number", "nil")
local timer = os.startTimer(nTime or 0)
repeat
local _, param = os.pullEvent("timer")
until param == timer
end
function write(sText)
expect(1, sText, "string", "number")
local w, h = term.getSize()
local x, y = term.getCursorPos()
local nLinesPrinted = 0
local function newLine()
if y + 1 <= h then
term.setCursorPos(1, y + 1)
else
term.setCursorPos(1, h)
term.scroll(1)
end
x, y = term.getCursorPos()
nLinesPrinted = nLinesPrinted + 1
end
-- Print the line with proper word wrapping
sText = tostring(sText)
while #sText > 0 do
local whitespace = string.match(sText, "^[ \t]+")
if whitespace then
-- Print whitespace
term.write(whitespace)
x, y = term.getCursorPos()
sText = string.sub(sText, #whitespace + 1)
end
local newline = string.match(sText, "^\n")
if newline then
-- Print newlines
newLine()
sText = string.sub(sText, 2)
end
local text = string.match(sText, "^[^ \t\n]+")
if text then
sText = string.sub(sText, #text + 1)
if #text > w then
-- Print a multiline word
while #text > 0 do
if x > w then
newLine()
end
term.write(text)
text = string.sub(text, w - x + 2)
x, y = term.getCursorPos()
end
else
-- Print a word normally
if x + #text - 1 > w then
newLine()
end
term.write(text)
x, y = term.getCursorPos()
end
end
end
return nLinesPrinted
end
function print(...)
local nLinesPrinted = 0
local nLimit = select("#", ...)
for n = 1, nLimit do
local s = tostring(select(n, ...))
if n < nLimit then
s = s .. "\t"
end
nLinesPrinted = nLinesPrinted + write(s)
end
nLinesPrinted = nLinesPrinted + write("\n")
return nLinesPrinted
end
function printError(...)
local oldColour
if term.isColour() then
oldColour = term.getTextColour()
term.setTextColour(colors.red)
end
print(...)
if term.isColour() then
term.setTextColour(oldColour)
end
end
function read(_sReplaceChar, _tHistory, _fnComplete, _sDefault)
expect(1, _sReplaceChar, "string", "nil")
expect(2, _tHistory, "table", "nil")
expect(3, _fnComplete, "function", "nil")
expect(4, _sDefault, "string", "nil")
term.setCursorBlink(true)
local sLine
if type(_sDefault) == "string" then
sLine = _sDefault
else
sLine = ""
end
local nHistoryPos
local nPos, nScroll = #sLine, 0
if _sReplaceChar then
_sReplaceChar = string.sub(_sReplaceChar, 1, 1)
end
local tCompletions
local nCompletion
local function recomplete()
if _fnComplete and nPos == #sLine then
tCompletions = _fnComplete(sLine)
if tCompletions and #tCompletions > 0 then
nCompletion = 1
else
nCompletion = nil
end
else
tCompletions = nil
nCompletion = nil
end
end
local function uncomplete()
tCompletions = nil
nCompletion = nil
end
local w = term.getSize()
local sx = term.getCursorPos()
local function redraw(_bClear)
local cursor_pos = nPos - nScroll
if sx + cursor_pos >= w then
-- We've moved beyond the RHS, ensure we're on the edge.
nScroll = sx + nPos - w
elseif cursor_pos < 0 then
-- We've moved beyond the LHS, ensure we're on the edge.
nScroll = nPos
end
local _, cy = term.getCursorPos()
term.setCursorPos(sx, cy)
local sReplace = _bClear and " " or _sReplaceChar
if sReplace then
term.write(string.rep(sReplace, math.max(#sLine - nScroll, 0)))
else
term.write(string.sub(sLine, nScroll + 1))
end
if nCompletion then
local sCompletion = tCompletions[nCompletion]
local oldText, oldBg
if not _bClear then
oldText = term.getTextColor()
oldBg = term.getBackgroundColor()
term.setTextColor(colors.white)
term.setBackgroundColor(colors.gray)
end
if sReplace then
term.write(string.rep(sReplace, #sCompletion))
else
term.write(sCompletion)
end
if not _bClear then
term.setTextColor(oldText)
term.setBackgroundColor(oldBg)
end
end
term.setCursorPos(sx + nPos - nScroll, cy)
end
local function clear()
redraw(true)
end
recomplete()
redraw()
local function acceptCompletion()
if nCompletion then
-- Clear
clear()
-- Find the common prefix of all the other suggestions which start with the same letter as the current one
local sCompletion = tCompletions[nCompletion]
sLine = sLine .. sCompletion
nPos = #sLine
-- Redraw
recomplete()
redraw()
end
end
while true do
local sEvent, param, param1, param2 = os.pullEvent()
if sEvent == "char" then
-- Typed key
clear()
sLine = string.sub(sLine, 1, nPos) .. param .. string.sub(sLine, nPos + 1)
nPos = nPos + 1
recomplete()
redraw()
elseif sEvent == "paste" then
-- Pasted text
clear()
sLine = string.sub(sLine, 1, nPos) .. param .. string.sub(sLine, nPos + 1)
nPos = nPos + #param
recomplete()
redraw()
elseif sEvent == "key" then
if param == keys.enter or param == keys.numPadEnter then
-- Enter/Numpad Enter
if nCompletion then
clear()
uncomplete()
redraw()
end
break
elseif param == keys.left then
-- Left
if nPos > 0 then
clear()
nPos = nPos - 1
recomplete()
redraw()
end
elseif param == keys.right then
-- Right
if nPos < #sLine then
-- Move right
clear()
nPos = nPos + 1
recomplete()
redraw()
else
-- Accept autocomplete
acceptCompletion()
end
elseif param == keys.up or param == keys.down then
-- Up or down
if nCompletion then
-- Cycle completions
clear()
if param == keys.up then
nCompletion = nCompletion - 1
if nCompletion < 1 then
nCompletion = #tCompletions
end
elseif param == keys.down then
nCompletion = nCompletion + 1
if nCompletion > #tCompletions then
nCompletion = 1
end
end
redraw()
elseif _tHistory then
-- Cycle history
clear()
if param == keys.up then
-- Up
if nHistoryPos == nil then
if #_tHistory > 0 then
nHistoryPos = #_tHistory
end
elseif nHistoryPos > 1 then
nHistoryPos = nHistoryPos - 1
end
else
-- Down
if nHistoryPos == #_tHistory then
nHistoryPos = nil
elseif nHistoryPos ~= nil then
nHistoryPos = nHistoryPos + 1
end
end
if nHistoryPos then
sLine = _tHistory[nHistoryPos]
nPos, nScroll = #sLine, 0
else
sLine = ""
nPos, nScroll = 0, 0
end
uncomplete()
redraw()
end
elseif param == keys.backspace then
-- Backspace
if nPos > 0 then
clear()
sLine = string.sub(sLine, 1, nPos - 1) .. string.sub(sLine, nPos + 1)
nPos = nPos - 1
if nScroll > 0 then nScroll = nScroll - 1 end
recomplete()
redraw()
end
elseif param == keys.home then
-- Home
if nPos > 0 then
clear()
nPos = 0
recomplete()
redraw()
end
elseif param == keys.delete then
-- Delete
if nPos < #sLine then
clear()
sLine = string.sub(sLine, 1, nPos) .. string.sub(sLine, nPos + 2)
recomplete()
redraw()
end
elseif param == keys["end"] then
-- End
if nPos < #sLine then
clear()
nPos = #sLine
recomplete()
redraw()
end
elseif param == keys.tab then
-- Tab (accept autocomplete)
acceptCompletion()
end
elseif sEvent == "mouse_click" or sEvent == "mouse_drag" and param == 1 then
local _, cy = term.getCursorPos()
if param1 >= sx and param1 <= w and param2 == cy then
-- Ensure we don't scroll beyond the current line
nPos = math.min(math.max(nScroll + param1 - sx, 0), #sLine)
redraw()
end
elseif sEvent == "term_resize" then
-- Terminal resized
w = term.getSize()
redraw()
end
end
local _, cy = term.getCursorPos()
term.setCursorBlink(false)
term.setCursorPos(w + 1, cy)
print()
return sLine
end
function loadfile(filename, mode, env)
-- Support the previous `loadfile(filename, env)` form instead.
if type(mode) == "table" and env == nil then
mode, env = nil, mode
end
expect(1, filename, "string")
expect(2, mode, "string", "nil")
expect(3, env, "table", "nil")
local file = fs.open(filename, "r")
if not file then return nil, "File not found" end
local func, err = load(file.readAll(), "@" .. fs.getName(filename), mode, env)
file.close()
return func, err
end
function dofile(_sFile)
expect(1, _sFile, "string")
local fnFile, e = loadfile(_sFile, nil, _G)
if fnFile then
return fnFile()
else
error(e, 2)
end
end
-- Install the rest of the OS api
function os.run(_tEnv, _sPath, ...)
expect(1, _tEnv, "table")
expect(2, _sPath, "string")
local tEnv = _tEnv
setmetatable(tEnv, { __index = _G })
if settings.get("bios.strict_globals", false) then
-- load will attempt to set _ENV on this environment, which
-- throws an error with this protection enabled. Thus we set it here first.
tEnv._ENV = tEnv
getmetatable(tEnv).__newindex = function(_, name)
error("Attempt to create global " .. tostring(name), 2)
end
end
local fnFile, err = loadfile(_sPath, nil, tEnv)
if fnFile then
local ok, err = pcall(fnFile, ...)
if not ok then
if err and err ~= "" then
printError(err)
end
return false
end
return true
end
if err and err ~= "" then
printError(err)
end
return false
end
local tAPIsLoading = {}
function os.loadAPI(_sPath)
expect(1, _sPath, "string")
local sName = fs.getName(_sPath)
if sName:sub(-4) == ".lua" then
sName = sName:sub(1, -5)
end
if tAPIsLoading[sName] == true then
printError("API " .. sName .. " is already being loaded")
return false
end
tAPIsLoading[sName] = true
local tEnv = {}
setmetatable(tEnv, { __index = _G })
local fnAPI, err = loadfile(_sPath, nil, tEnv)
if fnAPI then
local ok, err = pcall(fnAPI)
if not ok then
tAPIsLoading[sName] = nil
return error("Failed to load API " .. sName .. " due to " .. err, 1)
end
else
tAPIsLoading[sName] = nil
return error("Failed to load API " .. sName .. " due to " .. err, 1)
end
local tAPI = {}
for k, v in pairs(tEnv) do
if k ~= "_ENV" then
tAPI[k] = v
end
end
_G[sName] = tAPI
tAPIsLoading[sName] = nil
return true
end
function os.unloadAPI(_sName)
expect(1, _sName, "string")
if _sName ~= "_G" and type(_G[_sName]) == "table" then
_G[_sName] = nil
end
end
function os.sleep(nTime)
sleep(nTime)
end
local nativeShutdown = os.shutdown
function os.shutdown()
nativeShutdown()
while true do
coroutine.yield()
end
end
local nativeReboot = os.reboot
function os.reboot()
nativeReboot()
while true do
coroutine.yield()
end
end
-- Install the lua part of the HTTP api (if enabled)
if http then
local nativeHTTPRequest = http.request
local methods = {
GET = true, POST = true, HEAD = true,
OPTIONS = true, PUT = true, DELETE = true,
PATCH = true, TRACE = true,
}
local function checkKey(options, key, ty, opt)
local value = options[key]
local valueTy = type(value)
if (value ~= nil or not opt) and valueTy ~= ty then
error(("bad field '%s' (expected %s, got %s"):format(key, ty, valueTy), 4)
end
end
local function checkOptions(options, body)
checkKey(options, "url", "string")
if body == false then
checkKey(options, "body", "nil")
else
checkKey(options, "body", "string", not body)
end
checkKey(options, "headers", "table", true)
checkKey(options, "method", "string", true)
checkKey(options, "redirect", "boolean", true)
if options.method and not methods[options.method] then
error("Unsupported HTTP method", 3)
end
end
local function wrapRequest(_url, ...)
local ok, err = nativeHTTPRequest(...)
if ok then
while true do
local event, param1, param2, param3 = os.pullEvent()
if event == "http_success" and param1 == _url then
return param2
elseif event == "http_failure" and param1 == _url then
return nil, param2, param3
end
end
end
return nil, err
end
http.get = function(_url, _headers, _binary)
if type(_url) == "table" then
checkOptions(_url, false)
return wrapRequest(_url.url, _url)
end
expect(1, _url, "string")
expect(2, _headers, "table", "nil")
expect(3, _binary, "boolean", "nil")
return wrapRequest(_url, _url, nil, _headers, _binary)
end
http.post = function(_url, _post, _headers, _binary)
if type(_url) == "table" then
checkOptions(_url, true)
return wrapRequest(_url.url, _url)
end
expect(1, _url, "string")
expect(2, _post, "string")
expect(3, _headers, "table", "nil")
expect(4, _binary, "boolean", "nil")
return wrapRequest(_url, _url, _post, _headers, _binary)
end
http.request = function(_url, _post, _headers, _binary)
local url
if type(_url) == "table" then
checkOptions(_url)
url = _url.url
else
expect(1, _url, "string")
expect(2, _post, "string", "nil")
expect(3, _headers, "table", "nil")
expect(4, _binary, "boolean", "nil")
url = _url.url
end
local ok, err = nativeHTTPRequest(_url, _post, _headers, _binary)
if not ok then
os.queueEvent("http_failure", url, err)
end
return ok, err
end
local nativeCheckURL = http.checkURL
http.checkURLAsync = nativeCheckURL
http.checkURL = function(_url)
expect(1, _url, "string")
local ok, err = nativeCheckURL(_url)
if not ok then return ok, err end
while true do
local _, url, ok, err = os.pullEvent("http_check")
if url == _url then return ok, err end
end
end
local nativeWebsocket = http.websocket
http.websocketAsync = nativeWebsocket
http.websocket = function(_url, _headers)
expect(1, _url, "string")
expect(2, _headers, "table", "nil")
local ok, err = nativeWebsocket(_url, _headers)
if not ok then return ok, err end
while true do
local event, url, param = os.pullEvent( )
if event == "websocket_success" and url == _url then
return param
elseif event == "websocket_failure" and url == _url then
return false, param
end
end
end
end
-- Install the lua part of the FS api
local tEmpty = {}
function fs.complete(sPath, sLocation, bIncludeFiles, bIncludeDirs)
expect(1, sPath, "string")
expect(2, sLocation, "string")
local bIncludeHidden = nil
if type(bIncludeFiles) == "table" then
bIncludeDirs = field(bIncludeFiles, "include_dirs", "boolean", "nil")
bIncludeHidden = field(bIncludeFiles, "include_hidden", "boolean", "nil")
bIncludeFiles = field(bIncludeFiles, "include_files", "boolean", "nil")
else
expect(3, bIncludeFiles, "boolean", "nil")
expect(4, bIncludeDirs, "boolean", "nil")
end
bIncludeHidden = bIncludeHidden ~= false
bIncludeFiles = bIncludeFiles ~= false
bIncludeDirs = bIncludeDirs ~= false
local sDir = sLocation
local nStart = 1
local nSlash = string.find(sPath, "[/\\]", nStart)
if nSlash == 1 then
sDir = ""
nStart = 2
end
local sName
while not sName do
local nSlash = string.find(sPath, "[/\\]", nStart)
if nSlash then
local sPart = string.sub(sPath, nStart, nSlash - 1)
sDir = fs.combine(sDir, sPart)
nStart = nSlash + 1
else
sName = string.sub(sPath, nStart)
end
end
if fs.isDir(sDir) then
local tResults = {}
if bIncludeDirs and sPath == "" then
table.insert(tResults, ".")
end
if sDir ~= "" then
if sPath == "" then
table.insert(tResults, bIncludeDirs and ".." or "../")
elseif sPath == "." then
table.insert(tResults, bIncludeDirs and "." or "./")
end
end
local tFiles = fs.list(sDir)
for n = 1, #tFiles do
local sFile = tFiles[n]
if #sFile >= #sName and string.sub(sFile, 1, #sName) == sName and (
bIncludeHidden or sFile:sub(1, 1) ~= "." or sName:sub(1, 1) == "."
) then
local bIsDir = fs.isDir(fs.combine(sDir, sFile))
local sResult = string.sub(sFile, #sName + 1)
if bIsDir then
table.insert(tResults, sResult .. "/")
if bIncludeDirs and #sResult > 0 then
table.insert(tResults, sResult)
end
else
if bIncludeFiles and #sResult > 0 then
table.insert(tResults, sResult)
end
end
end
end
return tResults
end
return tEmpty
end
function fs.isDriveRoot(sPath)
expect(1, sPath, "string")
-- Force the root directory to be a mount.
return fs.getDir(sPath) == ".." or fs.getDrive(sPath) ~= fs.getDrive(fs.getDir(sPath))
end
-- Load APIs
local bAPIError = false
local tApis = fs.list("rom/apis")
for _, sFile in ipairs(tApis) do
if string.sub(sFile, 1, 1) ~= "." then
local sPath = fs.combine("rom/apis", sFile)
if not fs.isDir(sPath) then
if not os.loadAPI(sPath) then
bAPIError = true
end
end
end
end
if turtle and fs.isDir("rom/apis/turtle") then
-- Load turtle APIs
local tApis = fs.list("rom/apis/turtle")
for _, sFile in ipairs(tApis) do
if string.sub(sFile, 1, 1) ~= "." then
local sPath = fs.combine("rom/apis/turtle", sFile)
if not fs.isDir(sPath) then
if not os.loadAPI(sPath) then
bAPIError = true
end
end
end
end
end
if pocket and fs.isDir("rom/apis/pocket") then
-- Load pocket APIs
local tApis = fs.list("rom/apis/pocket")
for _, sFile in ipairs(tApis) do
if string.sub(sFile, 1, 1) ~= "." then
local sPath = fs.combine("rom/apis/pocket", sFile)
if not fs.isDir(sPath) then
if not os.loadAPI(sPath) then
bAPIError = true
end
end
end
end
end
if commands and fs.isDir("rom/apis/command") then
-- Load command APIs
if os.loadAPI("rom/apis/command/commands.lua") then
-- Add a special case-insensitive metatable to the commands api
local tCaseInsensitiveMetatable = {
__index = function(table, key)
local value = rawget(table, key)
if value ~= nil then
return value
end
if type(key) == "string" then
local value = rawget(table, string.lower(key))
if value ~= nil then
return value
end
end
return nil
end,
}
setmetatable(commands, tCaseInsensitiveMetatable)
setmetatable(commands.async, tCaseInsensitiveMetatable)
-- Add global "exec" function
exec = commands.exec
else
bAPIError = true
end
end
if bAPIError then
print("Press any key to continue")
os.pullEvent("key")
term.clear()
term.setCursorPos(1, 1)
end
-- Set default settings
settings.define("shell.allow_startup", {
default = true,
description = "Run startup files when the computer turns on.",
type = "boolean",
})
settings.define("shell.allow_disk_startup", {
default = commands == nil,
description = "Run startup files from disk drives when the computer turns on.",
type = "boolean",
})
settings.define("shell.autocomplete", {
default = true,
description = "Autocomplete program and arguments in the shell.",
type = "boolean",
})
settings.define("edit.autocomplete", {
default = true,
description = "Autocomplete API and function names in the editor.",
type = "boolean",
})
settings.define("lua.autocomplete", {
default = true,
description = "Autocomplete API and function names in the Lua REPL.",
type = "boolean",
})
settings.define("edit.default_extension", {
default = "lua",
description = [[The file extension the editor will use if none is given. Set to "" to disable.]],
type = "string",
})
settings.define("paint.default_extension", {
default = "nfp",
description = [[The file extension the paint program will use if none is given. Set to "" to disable.]],
type = "string",
})
settings.define("list.show_hidden", {
default = false,
description = [[Show hidden files (those starting with "." in the Lua REPL).]],
type = "boolean",
})
settings.define("motd.enable", {
default = pocket == nil,
description = "Display a random message when the computer starts up.",
type = "boolean",
})
settings.define("motd.path", {
default = "/rom/motd.txt:/motd.txt",
description = [[The path to load random messages from. Should be a colon (":") separated string of file paths.]],
type = "string",
})
settings.define("lua.warn_against_use_of_local", {
default = true,
description = [[Print a message when input in the Lua REPL starts with the word 'local'. Local variables defined in the Lua REPL are be inaccessable on the next input.]],
type = "boolean",
})
settings.define("lua.function_args", {
default = true,
description = "Show function arguments when printing functions.",
type = "boolean",
})
settings.define("lua.function_source", {
default = false,
description = "Show where a function was defined when printing functions.",
type = "boolean",
})
settings.define("bios.strict_globals", {
default = false,
description = "Prevents assigning variables into a program's environment. Make sure you use the local keyword or assign to _G explicitly.",
type = "boolean",
})
settings.define("shell.autocomplete_hidden", {
default = false,
description = [[Autocomplete hidden files and folders (those starting with ".").]],
type = "boolean",
})
if term.isColour() then
settings.define("bios.use_multishell", {
default = true,
description = [[Allow running multiple programs at once, through the use of the "fg" and "bg" programs.]],
type = "boolean",
})
end
if _CC_DEFAULT_SETTINGS then
for sPair in string.gmatch(_CC_DEFAULT_SETTINGS, "[^,]+") do
local sName, sValue = string.match(sPair, "([^=]*)=(.*)")
if sName and sValue then
local value
if sValue == "true" then
value = true
elseif sValue == "false" then
value = false
elseif sValue == "nil" then
value = nil
elseif tonumber(sValue) then
value = tonumber(sValue)
else
value = sValue
end
if value ~= nil then
settings.set(sName, value)
else
settings.unset(sName)
end
end
end
end
-- Load user settings
if fs.exists(".settings") then
settings.load(".settings")
end
-- Run the shell
local ok, err = pcall(parallel.waitForAny,
function()
local sShell
if term.isColour() and settings.get("bios.use_multishell") then
sShell = "rom/programs/advanced/multishell.lua"
else
sShell = "rom/programs/shell.lua"
end
os.run({}, sShell)
os.run({}, "rom/programs/shutdown.lua")
end,
rednet.run
)
-- If the shell errored, let the user read it.
term.redirect(term.native())
if not ok then
printError(err)
pcall(function()
term.setCursorBlink(false)
print("Press any key to continue")
os.pullEvent("key")
end)
end
-- End
os.shutdown()