772 lines
22 KiB
Lua
772 lines
22 KiB
Lua
-- SPDX-FileCopyrightText: 2017 Daniel Ratcliffe
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--
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-- SPDX-License-Identifier: LicenseRef-CCPL
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-- Load in expect from the module path.
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--
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-- Ideally we'd use require, but that is part of the shell, and so is not
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-- available to the BIOS or any APIs. All APIs load this using dofile, but that
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-- has not been defined at this point.
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local expect
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do
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local h = fs.open("rom/modules/main/cc/expect.lua", "r")
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local f, err = loadstring(h.readAll(), "@/rom/modules/main/cc/expect.lua")
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h.close()
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if not f then error(err) end
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expect = f().expect
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end
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-- Inject a stub for the old bit library
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_G.bit = {
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bnot = bit32.bnot,
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band = bit32.band,
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bor = bit32.bor,
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bxor = bit32.bxor,
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brshift = bit32.arshift,
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blshift = bit32.lshift,
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blogic_rshift = bit32.rshift,
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}
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-- Install lua parts of the os api
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function os.version()
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return "CraftOS 1.9"
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end
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function os.pullEventRaw(sFilter)
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return coroutine.yield(sFilter)
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end
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function os.pullEvent(sFilter)
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local eventData = table.pack(os.pullEventRaw(sFilter))
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if eventData[1] == "terminate" then
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error("Terminated", 0)
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end
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return table.unpack(eventData, 1, eventData.n)
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end
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-- Install globals
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function sleep(nTime)
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expect(1, nTime, "number", "nil")
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local timer = os.startTimer(nTime or 0)
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repeat
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local _, param = os.pullEvent("timer")
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until param == timer
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end
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function write(sText)
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expect(1, sText, "string", "number")
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local w, h = term.getSize()
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local x, y = term.getCursorPos()
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local nLinesPrinted = 0
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local function newLine()
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if y + 1 <= h then
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term.setCursorPos(1, y + 1)
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else
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term.setCursorPos(1, h)
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term.scroll(1)
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end
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x, y = term.getCursorPos()
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nLinesPrinted = nLinesPrinted + 1
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end
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-- Print the line with proper word wrapping
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sText = tostring(sText)
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while #sText > 0 do
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local whitespace = string.match(sText, "^[ \t]+")
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if whitespace then
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-- Print whitespace
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term.write(whitespace)
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x, y = term.getCursorPos()
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sText = string.sub(sText, #whitespace + 1)
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end
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local newline = string.match(sText, "^\n")
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if newline then
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-- Print newlines
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newLine()
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sText = string.sub(sText, 2)
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end
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local text = string.match(sText, "^[^ \t\n]+")
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if text then
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sText = string.sub(sText, #text + 1)
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if #text > w then
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-- Print a multiline word
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while #text > 0 do
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if x > w then
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newLine()
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end
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term.write(text)
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text = string.sub(text, w - x + 2)
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x, y = term.getCursorPos()
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end
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else
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-- Print a word normally
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if x + #text - 1 > w then
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newLine()
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end
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term.write(text)
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x, y = term.getCursorPos()
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end
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end
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end
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return nLinesPrinted
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end
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function print(...)
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local nLinesPrinted = 0
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local nLimit = select("#", ...)
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for n = 1, nLimit do
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local s = tostring(select(n, ...))
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if n < nLimit then
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s = s .. "\t"
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end
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nLinesPrinted = nLinesPrinted + write(s)
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end
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nLinesPrinted = nLinesPrinted + write("\n")
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return nLinesPrinted
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end
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function printError(...)
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local oldColour
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if term.isColour() then
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oldColour = term.getTextColour()
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term.setTextColour(colors.red)
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end
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print(...)
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if term.isColour() then
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term.setTextColour(oldColour)
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end
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end
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function read(_sReplaceChar, _tHistory, _fnComplete, _sDefault)
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expect(1, _sReplaceChar, "string", "nil")
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expect(2, _tHistory, "table", "nil")
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expect(3, _fnComplete, "function", "nil")
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expect(4, _sDefault, "string", "nil")
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term.setCursorBlink(true)
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local sLine
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if type(_sDefault) == "string" then
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sLine = _sDefault
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else
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sLine = ""
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end
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local nHistoryPos
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local nPos, nScroll = #sLine, 0
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if _sReplaceChar then
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_sReplaceChar = string.sub(_sReplaceChar, 1, 1)
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end
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local tCompletions
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local nCompletion
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local function recomplete()
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if _fnComplete and nPos == #sLine then
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tCompletions = _fnComplete(sLine)
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if tCompletions and #tCompletions > 0 then
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nCompletion = 1
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else
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nCompletion = nil
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end
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else
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tCompletions = nil
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nCompletion = nil
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end
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end
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local function uncomplete()
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tCompletions = nil
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nCompletion = nil
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end
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local w = term.getSize()
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local sx = term.getCursorPos()
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local function redraw(_bClear)
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local cursor_pos = nPos - nScroll
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if sx + cursor_pos >= w then
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-- We've moved beyond the RHS, ensure we're on the edge.
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nScroll = sx + nPos - w
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elseif cursor_pos < 0 then
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-- We've moved beyond the LHS, ensure we're on the edge.
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nScroll = nPos
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end
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local _, cy = term.getCursorPos()
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term.setCursorPos(sx, cy)
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local sReplace = _bClear and " " or _sReplaceChar
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if sReplace then
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term.write(string.rep(sReplace, math.max(#sLine - nScroll, 0)))
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else
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term.write(string.sub(sLine, nScroll + 1))
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end
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if nCompletion then
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local sCompletion = tCompletions[nCompletion]
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local oldText, oldBg
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if not _bClear then
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oldText = term.getTextColor()
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oldBg = term.getBackgroundColor()
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term.setTextColor(colors.white)
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term.setBackgroundColor(colors.gray)
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end
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if sReplace then
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term.write(string.rep(sReplace, #sCompletion))
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else
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term.write(sCompletion)
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end
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if not _bClear then
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term.setTextColor(oldText)
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term.setBackgroundColor(oldBg)
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end
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end
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term.setCursorPos(sx + nPos - nScroll, cy)
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end
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local function clear()
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redraw(true)
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end
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recomplete()
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redraw()
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local function acceptCompletion()
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if nCompletion then
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-- Clear
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clear()
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-- Find the common prefix of all the other suggestions which start with the same letter as the current one
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local sCompletion = tCompletions[nCompletion]
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sLine = sLine .. sCompletion
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nPos = #sLine
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-- Redraw
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recomplete()
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redraw()
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end
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end
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while true do
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local sEvent, param, param1, param2 = os.pullEvent()
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if sEvent == "char" then
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-- Typed key
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clear()
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sLine = string.sub(sLine, 1, nPos) .. param .. string.sub(sLine, nPos + 1)
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nPos = nPos + 1
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recomplete()
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redraw()
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elseif sEvent == "paste" then
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-- Pasted text
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clear()
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sLine = string.sub(sLine, 1, nPos) .. param .. string.sub(sLine, nPos + 1)
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nPos = nPos + #param
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recomplete()
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redraw()
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elseif sEvent == "key" then
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if param == keys.enter or param == keys.numPadEnter then
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-- Enter/Numpad Enter
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if nCompletion then
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clear()
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uncomplete()
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redraw()
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end
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break
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elseif param == keys.left then
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-- Left
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if nPos > 0 then
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clear()
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nPos = nPos - 1
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recomplete()
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redraw()
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end
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elseif param == keys.right then
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-- Right
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if nPos < #sLine then
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-- Move right
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clear()
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nPos = nPos + 1
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recomplete()
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redraw()
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else
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-- Accept autocomplete
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acceptCompletion()
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end
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elseif param == keys.up or param == keys.down then
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-- Up or down
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if nCompletion then
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-- Cycle completions
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clear()
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if param == keys.up then
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nCompletion = nCompletion - 1
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if nCompletion < 1 then
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nCompletion = #tCompletions
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end
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elseif param == keys.down then
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nCompletion = nCompletion + 1
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if nCompletion > #tCompletions then
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nCompletion = 1
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end
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end
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redraw()
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elseif _tHistory then
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-- Cycle history
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clear()
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if param == keys.up then
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-- Up
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if nHistoryPos == nil then
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if #_tHistory > 0 then
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nHistoryPos = #_tHistory
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end
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elseif nHistoryPos > 1 then
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nHistoryPos = nHistoryPos - 1
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end
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else
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-- Down
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if nHistoryPos == #_tHistory then
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nHistoryPos = nil
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elseif nHistoryPos ~= nil then
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nHistoryPos = nHistoryPos + 1
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end
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end
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if nHistoryPos then
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sLine = _tHistory[nHistoryPos]
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nPos, nScroll = #sLine, 0
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else
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sLine = ""
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nPos, nScroll = 0, 0
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end
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uncomplete()
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redraw()
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end
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elseif param == keys.backspace then
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-- Backspace
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if nPos > 0 then
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clear()
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sLine = string.sub(sLine, 1, nPos - 1) .. string.sub(sLine, nPos + 1)
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nPos = nPos - 1
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if nScroll > 0 then nScroll = nScroll - 1 end
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recomplete()
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redraw()
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end
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elseif param == keys.home then
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-- Home
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if nPos > 0 then
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clear()
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nPos = 0
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recomplete()
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redraw()
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end
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elseif param == keys.delete then
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-- Delete
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if nPos < #sLine then
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clear()
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sLine = string.sub(sLine, 1, nPos) .. string.sub(sLine, nPos + 2)
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recomplete()
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redraw()
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end
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elseif param == keys["end"] then
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-- End
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if nPos < #sLine then
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clear()
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nPos = #sLine
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recomplete()
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redraw()
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end
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elseif param == keys.tab then
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-- Tab (accept autocomplete)
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acceptCompletion()
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end
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elseif sEvent == "mouse_click" or sEvent == "mouse_drag" and param == 1 then
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local _, cy = term.getCursorPos()
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if param1 >= sx and param1 <= w and param2 == cy then
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-- Ensure we don't scroll beyond the current line
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nPos = math.min(math.max(nScroll + param1 - sx, 0), #sLine)
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redraw()
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end
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elseif sEvent == "term_resize" then
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-- Terminal resized
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w = term.getSize()
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redraw()
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end
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end
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local _, cy = term.getCursorPos()
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term.setCursorBlink(false)
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term.setCursorPos(w + 1, cy)
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print()
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return sLine
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end
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function loadfile(filename, mode, env)
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-- Support the previous `loadfile(filename, env)` form instead.
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if type(mode) == "table" and env == nil then
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mode, env = nil, mode
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end
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expect(1, filename, "string")
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expect(2, mode, "string", "nil")
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expect(3, env, "table", "nil")
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local file = fs.open(filename, "r")
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if not file then return nil, "File not found" end
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local func, err = load(file.readAll(), "@/" .. fs.combine(filename), mode, env)
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file.close()
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return func, err
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end
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function dofile(_sFile)
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expect(1, _sFile, "string")
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local fnFile, e = loadfile(_sFile, nil, _G)
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if fnFile then
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return fnFile()
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else
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error(e, 2)
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end
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end
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-- Install the rest of the OS api
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function os.run(_tEnv, _sPath, ...)
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expect(1, _tEnv, "table")
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expect(2, _sPath, "string")
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local tEnv = _tEnv
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setmetatable(tEnv, { __index = _G })
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if settings.get("bios.strict_globals", false) then
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-- load will attempt to set _ENV on this environment, which
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-- throws an error with this protection enabled. Thus we set it here first.
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tEnv._ENV = tEnv
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getmetatable(tEnv).__newindex = function(_, name)
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error("Attempt to create global " .. tostring(name), 2)
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end
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end
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local fnFile, err = loadfile(_sPath, nil, tEnv)
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if fnFile then
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local ok, err = pcall(fnFile, ...)
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if not ok then
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if err and err ~= "" then
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printError(err)
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end
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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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if err and err ~= "" then
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printError(err)
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end
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return false
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end
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local tAPIsLoading = {}
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function os.loadAPI(_sPath)
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expect(1, _sPath, "string")
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local sName = fs.getName(_sPath)
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if sName:sub(-4) == ".lua" then
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sName = sName:sub(1, -5)
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end
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if tAPIsLoading[sName] == true then
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printError("API " .. sName .. " is already being loaded")
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return false
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end
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tAPIsLoading[sName] = true
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local tEnv = {}
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setmetatable(tEnv, { __index = _G })
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local fnAPI, err = loadfile(_sPath, nil, tEnv)
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if fnAPI then
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local ok, err = pcall(fnAPI)
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if not ok then
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tAPIsLoading[sName] = nil
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return error("Failed to load API " .. sName .. " due to " .. err, 1)
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end
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else
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tAPIsLoading[sName] = nil
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return error("Failed to load API " .. sName .. " due to " .. err, 1)
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end
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local tAPI = {}
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for k, v in pairs(tEnv) do
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if k ~= "_ENV" then
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tAPI[k] = v
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end
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end
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_G[sName] = tAPI
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tAPIsLoading[sName] = nil
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return true
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end
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function os.unloadAPI(_sName)
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expect(1, _sName, "string")
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if _sName ~= "_G" and type(_G[_sName]) == "table" then
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_G[_sName] = nil
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end
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end
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function os.sleep(nTime)
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sleep(nTime)
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end
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local nativeShutdown = os.shutdown
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function os.shutdown()
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nativeShutdown()
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while true do
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coroutine.yield()
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end
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end
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local nativeReboot = os.reboot
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function os.reboot()
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nativeReboot()
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while true do
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coroutine.yield()
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end
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end
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local bAPIError = false
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local function load_apis(dir)
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if not fs.isDir(dir) then return end
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for _, file in ipairs(fs.list(dir)) do
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if file:sub(1, 1) ~= "." then
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local path = fs.combine(dir, file)
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if not fs.isDir(path) then
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if not os.loadAPI(path) then
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bAPIError = true
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end
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end
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end
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end
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end
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-- Load APIs
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load_apis("rom/apis")
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if http then load_apis("rom/apis/http") end
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if turtle then load_apis("rom/apis/turtle") end
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if pocket then load_apis("rom/apis/pocket") end
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if commands and fs.isDir("rom/apis/command") then
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-- Load command APIs
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if os.loadAPI("rom/apis/command/commands.lua") then
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-- Add a special case-insensitive metatable to the commands api
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local tCaseInsensitiveMetatable = {
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__index = function(table, key)
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local value = rawget(table, key)
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if value ~= nil then
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return value
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end
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if type(key) == "string" then
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local value = rawget(table, string.lower(key))
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if value ~= nil then
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return value
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end
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end
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return nil
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end,
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}
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setmetatable(commands, tCaseInsensitiveMetatable)
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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 = [[Whether the list program show hidden files (those starting with ".").]],
|
|
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 inaccessible 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
|
|
|
|
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
|
|
|
|
settings.define("bios.shell_path", {
|
|
default = sShell,
|
|
description = "The path the bios executes as the shell. This program is responsible for implementing the shell and multishell API, handling user input, and program execution.",
|
|
type = "string",
|
|
})
|
|
|
|
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 shellOk
|
|
local ok, err = pcall(parallel.waitForAny,
|
|
function()
|
|
shellOk = os.run({}, settings.get("bios.shell_path"))
|
|
if shellOk then
|
|
os.run({}, "rom/programs/shutdown.lua")
|
|
end
|
|
end,
|
|
rednet.run
|
|
)
|
|
|
|
-- If the shell errored, let the user read it.
|
|
term.redirect(term.native())
|
|
if not (ok and shellOk) then
|
|
-- if the shell within os.run errored, then the error was already output, and the shell loop exited normally.
|
|
if not ok then
|
|
printError(err)
|
|
end
|
|
pcall(function()
|
|
term.setCursorBlink(false)
|
|
print("Press any key to continue")
|
|
os.pullEvent("key")
|
|
end)
|
|
end
|
|
|
|
-- End
|
|
os.shutdown()
|