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Suspends ComputerCraft program after each written screenful
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| local parentTerm | |
| local linesFed = 0 | |
| local eventQueue = {} | |
| local consumeQueue = true | |
| local skipKeyUp = {} | |
| local function getChar() | |
| -- If the wrapped program received key event, | |
| -- we should not consume its corresponding char event | |
| local hadKeyDown = false | |
| while true do | |
| consumeQueue = false | |
| local ev = table.pack(os.pullEvent()) | |
| consumeQueue = true | |
| if hadKeyDown and ev[1] == "char" then | |
| return table.unpack(ev, 2, ev.n) | |
| elseif ev[1] == "key" then | |
| hadKeyDown = true | |
| if not ev[3] and ev[2] then | |
| skipKeyUp[ev[2]] = true | |
| end | |
| else | |
| table.insert(eventQueue, ev) | |
| end | |
| end | |
| end | |
| local function makeProxyFunction(name) | |
| return function(...) | |
| return parentTerm[name](...) | |
| end | |
| end | |
| local termProxy = { | |
| getSize = function() | |
| local w, h = parentTerm.getSize() | |
| return w, h - 1 | |
| end, | |
| scroll = function(n) | |
| local w, h = parentTerm.getSize() | |
| if linesFed + n >= h - 1 then | |
| local amount = h - 2 - linesFed | |
| if amount < 0 then | |
| amount = 0 | |
| end | |
| if amount > 0 then | |
| parentTerm.scroll(amount) | |
| end | |
| n = n - amount | |
| linesFed = 0 | |
| local savedCursor = {parentTerm.getCursorPos()} | |
| parentTerm.setCursorPos(1, h) | |
| parentTerm.clearLine() | |
| parentTerm.write(("-- MORE --"):sub(1, w)) | |
| getChar() | |
| parentTerm.clearLine() | |
| parentTerm.setCursorPos(table.unpack(savedCursor)) | |
| end | |
| parentTerm.scroll(n) | |
| linesFed = linesFed + n | |
| if linesFed < 0 then | |
| linesFed = 0 | |
| end | |
| end, | |
| } | |
| for k in pairs(term.native()) do | |
| if termProxy[k] == nil then | |
| termProxy[k] = makeProxyFunction(k) | |
| end | |
| end | |
| local args = {...} | |
| local co = coroutine.create(function() | |
| shell.run(table.unpack(args)) | |
| end) | |
| local x, y = term.getCursorPos() | |
| term.scroll(1) | |
| term.setCursorPos(x, y - 1) | |
| local wantEvent = nil | |
| while coroutine.status(co) ~= "dead" do | |
| local ok | |
| local ev = nil | |
| if consumeQueue then | |
| ev = table.remove(eventQueue, 1) | |
| end | |
| if wantEvent ~= nil and ev and wantEvent ~= ev[1] then | |
| ev = nil | |
| end | |
| while not ev do | |
| ev = table.pack(os.pullEvent(wantEvent)) | |
| if ev[1] == "key" and ev[3] then | |
| if ev[2] and skipKeyUp[ev[2]] then | |
| skipKeyUp[ev[2]] = nil | |
| ev[3] = false | |
| end | |
| elseif ev[1] == "key_up" then | |
| if ev[2] and skipKeyUp[ev[2]] then | |
| skipKeyUp[ev[2]] = nil | |
| ev = nil | |
| end | |
| end | |
| end | |
| parentTerm = term.current() | |
| term.redirect(termProxy) | |
| ok, wantEvent = coroutine.resume(co, table.unpack(ev, 1, ev.n)) | |
| term.redirect(parentTerm) | |
| if not ok then | |
| printError(wantEvent) | |
| break | |
| end | |
| end | |
| -- vim: ts=4 et |
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