v0.10.0 - Added text editor (which took me way too long) and too many other tweaks to name.

halyde/apps/cd.lua

@@ -24,6 +24,6 @@ else
   if fs.exists(directory) and fs.isDirectory(directory) or fs.exists(shell.workingDirectory .. directory) and fs.isDirectory(shell.workingDirectory .. directory) then
     shell.workingDirectory = directory
   else
-    print("error: no such directory")
+    print("\27[91mNo such directory.")
   end
 end

halyde/apps/edit.lua

@@ -0,0 +1,321 @@
+local args = {...}
+local file = args[1]
+args = nil
+local fs = import("filesystem")
+local event = import("event")
+local gpu = component.proxy(component.list("gpu")())
+local width, height = gpu.getResolution()
+local scrollPosX, scrollPosY = 1, 1
+local cursorPosX, cursorPosY = 1, 1
+local cursorWhite = true
+local changesMade = false
+local renderBuffer = gpu.allocateBuffer()
+local scrollSpeed = 5
+--local ocelot = component.proxy(component.list("ocelot")())
+
+local function rawset(x, y, text)
+  termlib.cursorPosX = x
+  termlib.cursorPosY = y
+  print(text, false, false)
+end
+
+local filestring, filepath, handle, data, tmpdata
+if file then
+  if file:sub(1, 1) == "/" then
+    filepath = file
+  else
+    filepath = shell.workingDirectory .. file
+  end
+  handle, data, tmpdata = fs.open(filepath, "r"), "", nil
+  if fs.exists(filepath) then
+    filestring = filepath
+    repeat
+      tmpdata = handle:read(math.huge)
+      data = data .. (tmpdata or "")
+    until not tmpdata
+    tmpdata = {}
+    if data:gmatch("(.-)\n")() then
+      for line in data:gmatch("(.-)\n") do
+        local newLine = line:gsub("\r", "") -- this took me SO LONG TO FIGURE OUT AAAAAAAA I HATE CRLF I HATE CRLF I HATE CRLF
+        table.insert(tmpdata, newLine)
+      end
+    else
+      tmpdata = {data}
+    end
+  else
+    filepath = shell.workingDirectory .. file
+    filestring = "[NEW FILE]"
+    tmpdata = {""}
+  end
+else
+  filepath = ""
+  filestring = "[NEW FILE]"
+  tmpdata = {""}
+end
+local function render()
+  gpu.setActiveBuffer(renderBuffer)
+  clear()
+  local realCursorX = math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2)
+  if realCursorX < 1 then
+    scrollPosX = scrollPosX + realCursorX - 1
+    cursorPosX = 1
+    realCursorX = math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2)
+  end
+  for i = scrollPosY, height + scrollPosY - 3 do
+    rawset(1, i - scrollPosY + 1, (tmpdata[i] or ""):sub(scrollPosX))
+  end
+  rawset(1, height - 1, "\27[107m\27[30m" .. filestring .. string.rep(" ", width))
+  rawset(1, height, "\27[107m\27[30m^X\27[0m Exit  \27[107m\27[30m^S\27[0m Save" .. string.rep(" ", width))
+  local char = gpu.get(realCursorX, cursorPosY)
+  if cursorWhite then
+    rawset(realCursorX, cursorPosY, "\27[107m\27[30m" .. char .. "\27[0m")
+  else
+    rawset(realCursorX, cursorPosY, char)
+  end
+  gpu.bitblt()
+  gpu.setActiveBuffer(0)
+end
+
+local renderFlag, cursorRenderFlag = false, false
+
+local function scrollUp()
+  cursorPosY = cursorPosY - 1
+  cursorRenderFlag = true
+  cursorWhite = true
+  if cursorPosY < 1 then
+    renderFlag = true
+    scrollPosY = scrollPosY - 1
+    cursorPosY = 1
+  end
+  if scrollPosY < 1 then
+    renderFlag = false
+    scrollPosY = 1
+  end
+  if math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2) < 1 then
+    renderFlag = true
+  end
+end
+
+local function scrollDown()
+  cursorPosY = cursorPosY + 1
+  cursorRenderFlag = true
+  cursorWhite = true
+  if cursorPosY + scrollPosY - 1 > #tmpdata then
+    renderFlag = false
+    cursorPosY = #tmpdata - scrollPosY + 1
+  end
+  if cursorPosY > height - 2 then
+    renderFlag = true
+    scrollPosY = scrollPosY + 1
+    cursorPosY = height - 2
+  end
+  if math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2) < 1 then
+    renderFlag = true
+  end
+end
+
+local function scrollLeft()
+  cursorRenderFlag = true
+  cursorWhite = true
+  if cursorPosX > 1 then
+    if cursorPosX <= unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2 then
+      cursorPosX = cursorPosX - 1
+    elseif unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 1 > 1 then
+      cursorPosX = unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 1
+    end
+  elseif scrollPosX > 1 then
+    scrollPosX = scrollPosX - 1
+    renderFlag = true
+  end
+  if math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2) < 1 then
+    renderFlag = true
+  end
+end
+
+local function scrollRight()
+  cursorRenderFlag = true
+  cursorWhite = true
+  if cursorPosX <= unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 1 then
+    cursorPosX = cursorPosX + 1
+  end
+  if cursorPosX > width then
+    cursorPosX = width
+    scrollPosX = scrollPosX + 1
+    renderFlag = true
+  end
+end
+
+local function processEvent(args)
+  renderFlag, cursorRenderFlag = false, false
+  if args[1] == "key_down" then
+    local keycode = args[4]
+    local key = keyboard.keys[keycode]
+    if keyboard.ctrlDown then
+      return false, false, key
+    end
+    if key == "down" and cursorPosY < #tmpdata then
+      scrollDown()
+    end
+    if key == "up" then
+      scrollUp()
+    end
+    if key == "left" then
+      scrollLeft()
+    end
+    if key == "right" then
+      scrollRight()
+    end
+    if key == "enter" then
+      changesMade = true
+      renderFlag = true
+      cursorWhite = true
+      table.insert(tmpdata, cursorPosY + 1, tmpdata[cursorPosY]:sub(cursorPosX))
+      tmpdata[cursorPosY] = tmpdata[cursorPosY]:sub(1, cursorPosX - 1)
+      cursorPosX = 1
+      cursorPosY = cursorPosY + 1
+      scrollPosX = 1
+      if cursorPosY > height - 2 then
+        scrollPosY = scrollPosY + 1
+        cursorPosY = height - 2
+      end
+    end
+    if key == "back" then
+      changesMade = true
+      cursorRenderFlag = true
+      cursorWhite = true
+      if cursorPosY + scrollPosY - 1 > 1 then
+        cursorPosY = cursorPosY - 1
+        if cursorPosY < 1 then
+          scrollPosY = scrollPosY - 1
+          cursorPosY = 1
+        end
+        if scrollPosY < 1 then
+          scrollPosY = 1
+        end
+        cursorPosX = unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2
+        if cursorPosX > width then
+          scrollPosX = cursorPosX - width + 1
+          cursorPosX = width
+        end
+        tmpdata[cursorPosY] = tmpdata[cursorPosY] .. tmpdata[cursorPosY + 1]
+        table.remove(tmpdata, cursorPosY + 1)
+        renderFlag = true
+      else
+        tmpdata[cursorPosY] = tmpdata[cursorPosY]:sub(1, cursorPosX + scrollPosX - 3) .. tmpdata[cursorPosY]:sub(cursorPosX + scrollPosX - 1)
+        cursorPosX = math.min(cursorPosX - 1, unicode.wlen(tmpdata[cursorPosY]) + 1)
+        if cursorPosX < 1 then
+          cursorPosX = 1
+          scrollPosX = scrollPosX - 1
+          renderFlag = true
+        else
+          rawset(1, cursorPosY - scrollPosY + 1, tmpdata[cursorPosY]:sub(scrollPosX) .. " ")
+        end
+      end
+    end
+    if args[3] >= 32 and args[3] <= 126 then
+      changesMade = true
+      cursorRenderFlag = true
+      cursorWhite = true
+      tmpdata[cursorPosY] = tmpdata[cursorPosY]:sub(1, cursorPosX + scrollPosX - 2) .. unicode.char(args[3]) .. tmpdata[cursorPosY]:sub(cursorPosX + scrollPosX - 1)
+      cursorPosX = math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY])) + 1
+      --ocelot.log(tostring(cursorPosX))
+      if cursorPosX > width then
+        cursorPosX = width
+        scrollPosX = scrollPosX + 1
+        renderFlag = true
+      else
+        rawset(1, cursorPosY - scrollPosY + 1, tmpdata[cursorPosY]:sub(scrollPosX))
+      end
+    end
+  elseif args[1] == "scroll" then
+    if args[5] == 1 then
+      for i = 1, scrollSpeed do
+        scrollUp()
+      end
+    elseif args[5] == -1 and cursorPosY < #tmpdata then
+      for i = 1, scrollSpeed do
+        scrollDown()
+      end
+    end
+  end
+  return renderFlag, cursorRenderFlag
+end
+
+local function save()
+  rawset(1, height - 1, "\27[107m\27[30m" .. string.rep(" ", width))
+  termlib.cursorPosX = 1
+  termlib.cursorPosY = height - 1
+  local savepath = read(nil, "\27[107m\27[30mSave location: ", filepath)
+  if fs.exists(savepath) then
+    rawset(1, height - 1, "\27[107m\27[30m" .. string.rep(" ", width))
+    local answer = read(nil, "\27[107m\27[30mFile already exists. Overwrite it? [Y/n] ")
+    if answer:lower() == "n" then
+      rawset(1, height - 1, "\27[107m\27[30m" .. filestring .. string.rep(" ", width))
+      return
+    end
+  end
+  local handle, errorMessage = fs.open(savepath, "w")
+  if handle then
+    handle:write(table.concat(tmpdata, "\n"))
+    handle:close()
+    rawset(1, height - 1, "\27[107m\27[30m" .. filestring .. string.rep(" ", width))
+  else
+    rawset(1, height - 1, "\27[107m\27[30mERROR: " .. errorMessage:gsub("\n", "") .. string.rep(" ", width))
+  end
+  changesMade = false
+end
+
+render()
+while true do
+  local args = {event.pull(0.5)}
+  local renderFlag, cursorRenderFlag, specialKey = false, false, nil
+  local previousCursorX, previousCursorY = math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2), cursorPosY
+  if args and args[1] then
+    cursorWhite = true
+    renderFlag, cursorRenderFlag, specialKey = processEvent(args)
+    if specialKey == "x" then
+      if changesMade then
+        termlib.cursorPosX = 1
+        termlib.cursorPosY = height - 1
+        local response = read(nil, "\27[107m\27[30mWould you like to save changes? [Y/n] ")
+        if response:lower() ~= "n" then
+          save()
+        end
+      end
+      gpu.freeAllBuffers()
+      clear()
+      return
+    end
+    if specialKey == "s" then
+      save()
+    end
+    repeat
+      args = {event.pull("key_down", 0)}
+      if args and args[1] then
+        processEvent(args)
+      end
+    until not args or not args[1]
+  else
+    cursorWhite = not cursorWhite
+    cursorRenderFlag = true
+  end
+  if cursorRenderFlag then
+    local char = gpu.get(previousCursorX, previousCursorY)
+    rawset(previousCursorX, previousCursorY, char)
+    local realCursorX = math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2)
+    if realCursorX < 1 then
+      scrollPosX = scrollPosX + realCursorX - 1
+      cursorPosX = 1
+      realCursorX = math.min(cursorPosX, unicode.wlen(tmpdata[cursorPosY]) - scrollPosX + 2)
+    end
+    local char = gpu.get(realCursorX, cursorPosY)
+    if cursorWhite then
+      rawset(realCursorX, cursorPosY, "\27[107m\27[30m" .. char .. "\27[0m")
+    else
+      rawset(realCursorX, cursorPosY, char)
+    end
+  end
+  if renderFlag then
+    render()
+  end
+end

halyde/apps/help.lua

@@ -21,6 +21,18 @@ if fs.exists("/halyde/apps/helpdb/" .. command .. ".txt") then
     data = data .. (tmpdata or "")
   until not tmpdata
   print(data)
+  local aliases = table.copy(shell.aliases)
+  if table.find(aliases, command) then
+    local aliasIndex = table.find(aliases, command)
+    local aliasString = "Aliases:\n  " .. aliasIndex
+    aliases[aliasIndex] = nil
+    while table.find(aliases, command) do
+      aliasIndex = table.find(aliases, command)
+      aliasString = aliasString .. ", " .. aliasIndex
+      aliases[aliasIndex] = nil
+    end
+    print(aliasString)
+  end
 else
   print("Could not find help file for: " .. command .. ".")
 end

halyde/apps/helpdb/cp.txt

@@ -2,8 +2,8 @@ Usage: cp [FLAGS] [SOURCE] [DESTINATION]
 Copies a file.
 
   -o, --overwrite   Allows any file that might be at the destination to be overwritten.
-  SOURCE            Specifies the file to be copied.
+  SOURCE        Specifies the file to be copied.
-  DESTINATION       Specifies the path to copy the file to.
+  DESTINATION   Specifies the path to copy the file to.
 
 Examples:
   cp /home/a.txt /b.txt   Copies the file at /home/a.txt to /b.txt.

halyde/apps/helpdb/default.txt

@@ -13,3 +13,6 @@ All current Halyde shell commands:
 
 You can get additional information on any app or command by running:
   help [COMMAND]
+
+In the help documentation, an asterisk (*) next to an argument means it is optional.
+This is excluding flags, which are all optional.

halyde/apps/helpdb/help.txt

@@ -1,7 +1,7 @@
 Usage: help [COMMAND]
 Displays info on the command specified, or a list of commands if one is not specified.
 
-  COMMAND   Command to display information on.
+  COMMAND*   Command to display information on.
 
 Examples:
   help      Displays a list of all default commands available.

halyde/apps/helpdb/ls.txt

@@ -2,7 +2,7 @@ Usage: ls [PATH]
 Lists all files and directories in the specified path, or in the shell working directory if the path isn't specified.
 Directories are shown in yellow, executable files are shown in green, and other files are shown in white.
 
-  PATH   Path to the folder to list files and directories from.
+  PATH*   Path to the folder to list files and directories from.
 
 Examples:
   ls           Lists all files and directories from the current shell working directory.

halyde/apps/helpdb/rm.txt

@@ -7,4 +7,4 @@ Removes files and directories.
 
 Examples:
   rm a.txt                 Removes a.txt in the current shell working directory.
-  rm -r -f /halyde/core/   Removes everything in /halyde/core forcedly and recursively. Note that trying this on a real machine will remove critical Halyde system files and cause it to stop working.
+  rm -r -f /halyde/core/   Removes everything in /halyde/core/ forcedly and recursively.

halyde/apps/rtest3d.lua

@@ -0,0 +1,137 @@
+local raster = import("raster")
+local event = import("event")
+
+-- Initialize the 3D renderer for a spinning cube
+-- Using the raster library for drawing
+
+-- Screen dimensions
+local SCREEN_WIDTH, SCREEN_HEIGHT = component.invoke(component.list("gpu")(), "getResolution")
+SCREEN_WIDTH, SCREEN_HEIGHT = SCREEN_WIDTH * 2, SCREEN_HEIGHT * 4
+local CENTER_X = SCREEN_WIDTH / 2
+local CENTER_Y = SCREEN_HEIGHT / 2
+
+-- Cube properties
+local CUBE_SIZE = 10
+local increment = 0
+local WHITE = 0xFFFFFF
+local ROTATION_SPEED = 0.1
+
+-- 3D cube vertices (centered at origin)
+local vertices = {
+    {-CUBE_SIZE, -CUBE_SIZE, -CUBE_SIZE}, -- 0: left bottom back
+    {CUBE_SIZE, -CUBE_SIZE, -CUBE_SIZE},  -- 1: right bottom back
+    {CUBE_SIZE, CUBE_SIZE, -CUBE_SIZE},   -- 2: right top back
+    {-CUBE_SIZE, CUBE_SIZE, -CUBE_SIZE},  -- 3: left top back
+    {-CUBE_SIZE, -CUBE_SIZE, CUBE_SIZE},  -- 4: left bottom front
+    {CUBE_SIZE, -CUBE_SIZE, CUBE_SIZE},   -- 5: right bottom front
+    {CUBE_SIZE, CUBE_SIZE, CUBE_SIZE},    -- 6: right top front
+    {-CUBE_SIZE, CUBE_SIZE, CUBE_SIZE}    -- 7: left top front
+}
+
+-- Cube edges defined by vertex indices
+local edges = {
+    {0, 1}, {1, 2}, {2, 3}, {3, 0}, -- back face
+    {4, 5}, {5, 6}, {6, 7}, {7, 4}, -- front face
+    {0, 4}, {1, 5}, {2, 6}, {3, 7}  -- connecting edges
+}
+
+-- Projection parameters
+local FOV = 256         -- Field of view (distance from camera to screen)
+local Z_OFFSET = 300    -- Distance from camera to cube center
+
+-- Initialize rotation angles
+local angleX, angleY, angleZ = 0, 0, 0
+
+-- Matrix multiplication function (apply rotation to a 3D point)
+local function rotatePoint(x, y, z)
+    -- Rotation around X axis
+    local cosX, sinX = math.cos(angleX), math.sin(angleX)
+    local y1 = y * cosX - z * sinX
+    local z1 = y * sinX + z * cosX
+    
+    -- Rotation around Y axis
+    local cosY, sinY = math.cos(angleY), math.sin(angleY)
+    local x1 = x * cosY + z1 * sinY
+    local z2 = -x * sinY + z1 * cosY
+    
+    -- Rotation around Z axis
+    local cosZ, sinZ = math.cos(angleZ), math.sin(angleZ)
+    local x2 = x1 * cosZ - y1 * sinZ
+    local y2 = x1 * sinZ + y1 * cosZ
+    
+    return x2, y2, z2
+end
+
+-- Perspective projection function (3D to 2D)
+local function projectPoint(x, y, z)
+    -- Apply perspective projection
+    local scale = FOV / (z + Z_OFFSET)
+    local x2d = x * scale + CENTER_X
+    local y2d = y * scale + CENTER_Y
+    
+    return x2d, y2d
+end
+
+-- Render a single frame
+local function renderFrame()
+    increment = increment + 0.05
+    CUBE_SIZE = (math.sin(increment) + 1) * 25
+    vertices = {
+      {-CUBE_SIZE, -CUBE_SIZE, -CUBE_SIZE}, -- 0: left bottom back
+      {CUBE_SIZE, -CUBE_SIZE, -CUBE_SIZE},  -- 1: right bottom back
+      {CUBE_SIZE, CUBE_SIZE, -CUBE_SIZE},   -- 2: right top back
+      {-CUBE_SIZE, CUBE_SIZE, -CUBE_SIZE},  -- 3: left top back
+      {-CUBE_SIZE, -CUBE_SIZE, CUBE_SIZE},  -- 4: left bottom front
+      {CUBE_SIZE, -CUBE_SIZE, CUBE_SIZE},   -- 5: right bottom front
+      {CUBE_SIZE, CUBE_SIZE, CUBE_SIZE},    -- 6: right top front
+      {-CUBE_SIZE, CUBE_SIZE, CUBE_SIZE}    -- 7: left top front
+    }
+    -- Update rotation angles
+    raster.clear()
+    angleX = angleX + ROTATION_SPEED
+    angleY = angleY + ROTATION_SPEED * 0.7
+    angleZ = angleZ + ROTATION_SPEED * 0.5
+    
+    -- Project all vertices
+    local projectedPoints = {}
+    for i, vertex in ipairs(vertices) do
+        -- Rotate the point
+        local x, y, z = rotatePoint(vertex[1], vertex[2], vertex[3])
+        
+        -- Project the point to 2D
+        local x2d, y2d = projectPoint(x, y, z)
+        projectedPoints[i] = {x2d, y2d}
+    end
+    
+    -- Draw all edges
+    for _, edge in ipairs(edges) do
+        local p1 = projectedPoints[edge[1] + 1] -- +1 because Lua indices start at 1
+        local p2 = projectedPoints[edge[2] + 1]
+        
+        -- Draw the line
+        raster.drawLine(p1[1], p1[2], p2[1], p2[2], WHITE)
+    end
+    
+    -- Render the frame
+    raster.update()
+end
+
+-- Main program
+function main()
+    -- Initialize raster engine
+    raster.init()
+    
+    -- Main loop (assume this is called repeatedly by the host environment)
+    while true do
+      renderFrame()
+      if event.pull("key_down", 0) then
+        raster.free()
+        break
+      end
+    end
+    -- Return a reference to renderFrame so it can be called for animation
+    return renderFrame
+end
+
+-- Start the program
+return main()

halyde/config/shell.cfg

@@ -9,8 +9,11 @@ local shellcfg = {
     ["rename"] = "mv",
     ["ren"] = "mv",
     ["dir"] = "ls",
+    ["list"] = "ls",
     ["man"] = "help",
     ["del"] = "rm",
+    ["delete"] = "rm",
+    ["remove"] = "rm",
     [".."] = "cd .."
   }, ["defaultWorkingDirectory"] = "/home/" -- the working directory that gets set when halyde starts
 }

halyde/core/boot.lua

@@ -1,7 +1,7 @@
 local loadfile = ...
 local filesystem = loadfile("/halyde/lib/filesystem.lua")(loadfile)
 
-_G._OSVERSION = "Halyde 0.9.0"
+_G._OSVERSION = "Halyde 0.10.0"
 
 function _G.import(module, ...)
   local args = table.pack(...)

halyde/core/cormgr.lua

@@ -4,10 +4,25 @@ _G.cormgr.corList = {}
 --local ocelot = component.proxy(component.list("ocelot")())
 
 local filesystem = import("filesystem")
+local gpu = component.proxy(component.list("gpu")())
 
-function _G.cormgr.loadCoroutine(path)
+function _G.cormgr.loadCoroutine(path, ...)
+  local args = {...}
   local cor = coroutine.create(function()
-    import(path)
+    local result, errorMessage = xpcall(function(...)
+      import(...)
+    end, function(errorMessage)
+      return errorMessage .. "\n \n" .. debug.traceback()
+    end, path, table.unpack(args))
+    if not result then
+      if print then
+        gpu.freeAllBuffers()
+        print("\n\27[91m" .. errorMessage)
+      else
+        error(errorMessage)
+      end
+    end
+    --import(path, table.unpack(args))
   end)
   table.insert(_G.cormgr.corList, cor)
 end
@@ -22,16 +37,20 @@ end
 
 local function runCoroutines()
   for i = 1, #_G.cormgr.corList do
-    local result, errorMessage = coroutine.resume(_G.cormgr.corList[i])
+    if cormgr.corList[i] then
-    if not result then
+      local result, errorMessage = coroutine.resume(cormgr.corList[i])
-      handleError(errorMessage)
+      if cormgr.corList[i] then
+        if not result then
+          handleError(errorMessage)
+        end
+        if coroutine.status(cormgr.corList[i]) == "dead" then
+          table.remove(cormgr.corList, i)
+          i = i - 1
+        end
+        --computer.pullSignal(0)
+        --coroutine.yield()
+      end
     end
-    if coroutine.status(_G.cormgr.corList[i]) == "dead" then
-      table.remove(_G.cormgr.corList, i)
-      i = i - 1
-    end
-    --computer.pullSignal(0)
-    --coroutine.yield()
   end
 end
 

halyde/core/evmgr.lua

@@ -2,6 +2,9 @@ _G.evmgr = {}
 _G.evmgr.eventQueue = {}
 local maxEventQueueLength = 10 -- increase if events start getting dropped
 
+keyboard.ctrlDown = false
+keyboard.altDown = false
+
 --local ocelot = component.proxy(component.list("ocelot")())
 
 while true do
@@ -11,6 +14,30 @@ while true do
     if args and args[1] then
       --ocelot.log("Sending signal "..args..","..computer.uptime())
       table.insert(evmgr.eventQueue, args)
+      if keyboard then
+        if args[1] == "key_down" then
+          local keycode = args[4]
+          local key = keyboard.keys[keycode]
+          if key == "lcontrol" then
+            keyboard.ctrlDown = true
+          elseif key == "lmenu" then
+            keyboard.altDown = true
+          elseif key == "c" and keyboard.ctrlDown and keyboard.altDown then
+            if print then
+              print("\n\27[91mCoroutine "..tostring(#cormgr.corList).." killed.")
+            end
+            cormgr.corList[#cormgr.corList] = nil
+          end
+        elseif args[1] == "key_up" then
+          local keycode = args[4]
+          local key = keyboard.keys[keycode]
+          if key == "lcontrol" then
+            keyboard.ctrlDown = false
+          elseif key == "lmenu" then
+            keyboard.altDown = false
+          end
+        end
+      end
       while #evmgr.eventQueue > maxEventQueueLength do
         --ocelot.log("Queue length breach, removing first signal")
         table.remove(evmgr.eventQueue, 1)
@@ -19,4 +46,4 @@ while true do
   until not args or not args[1]
   --ocelot.log("done")
   coroutine.yield()
-end
+end

halyde/core/fullkb.lua

@@ -1,5 +1,4 @@
-_G.keyboard = {pressedChars = {}, pressedCodes = {}}
+_G.keyboard = {["keys"] = {}}
-_G.keyboard.keys = {}
 
 keyboard.keys["1"]           = 0x02
 keyboard.keys["2"]           = 0x03
@@ -141,4 +140,4 @@ setmetatable(keyboard.keys,
       end
     end
   end
-})
+})

halyde/core/shell.lua

@@ -3,11 +3,22 @@ import("/halyde/core/termlib.lua")
 local event = import("event")
 --local ocelot = component.proxy(component.list("ocelot")())
 local filesystem = import("filesystem")
+local gpu = component.proxy(component.list("gpu")())
 
 _G.shell = {}
 _G.shell.workingDirectory = shellcfg["defaultWorkingDirectory"]
 _G.shell.aliases = shellcfg["aliases"]
 
+local function runAsCoroutine(path, ...)
+  --ocelot.log("running " .. path .. " as coroutine")
+  cormgr.loadCoroutine(path, ...)
+  local corIndex = #cormgr.corList
+  local cor = cormgr.corList[#cormgr.corList]
+  repeat
+    coroutine.yield()
+  until cormgr.corList[corIndex] ~= cor
+end
+
 function _G.shell.run(command)
   checkArg(1, command, "string")
   if shell.aliases[command:match("[^ ]+")] then
@@ -48,14 +59,14 @@ function _G.shell.run(command)
     foundfile = true
     local path = args[1]
     table.remove(args, 1)
-    import(path, table.unpack(args))
+    runAsCoroutine(path, table.unpack(args))
   else
     for _, item in pairs(shellcfg["path"]) do
       if filesystem.exists(item..args[1]) then
         foundfile = true
         local path = item..args[1]
         table.remove(args, 1)
-        import(path, table.unpack(args))
+        runAsCoroutine(path, table.unpack(args))
         break
       else -- try to look for it without the file extension
         local files = filesystem.list(item)
@@ -63,15 +74,7 @@ function _G.shell.run(command)
           if args[1] == file:match("(.+)%.[^%.]+$") then
             foundfile = true
             table.remove(args, 1)
-            local function runCommand()
+            runAsCoroutine(item..file, table.unpack(args))
-              import(item..file, table.unpack(args))
-            end
-            local result, reason = xpcall(runCommand, function(errMsg)
-              return errMsg .. "\n\n" .. debug.traceback()
-            end)
-            if not result then
-              print("\27[91m" .. reason)
-            end
             break
           end
         end
@@ -87,9 +90,10 @@ print(shellcfg["startupMessage"])
 while true do
   coroutine.yield()
   -- print(shell.workingDirectory .. " >")
-  print(shellcfg["prompt"]:format(shell.workingDirectory),false)
+  --print(shellcfg["prompt"]:format(shell.workingDirectory),false)
   -- termlib.cursorPosX = #(shell.workingDirectory .. " >  ")
   -- termlib.cursorPosY = termlib.cursorPosY - 1
-  local shellCommand = read("shell")
+  local shellCommand = read("shell", shellcfg["prompt"]:format(shell.workingDirectory))
   shell.run(shellCommand)
+  gpu.freeAllBuffers()
 end

halyde/core/termlib.lua

@@ -1,6 +1,7 @@
 local event = import("event")
 --local keyboard = import("keyboard")
 
+--local ocelot = component.proxy(component.list("ocelot")())
 local gpu = component.proxy(component.list("gpu")()) -- replace with component.gpu once implemented
 _G.termlib = {}
 termlib.cursorPosX = 1
@@ -41,7 +42,7 @@ gpu.setForeground(defaultForegroundColor)
 gpu.setBackground(defaultBackgroundColor)
 
 local function scrollDown()
-  if gpu.copy(0,1,width,height,0,-1) then
+  if gpu.copy(1,1,width,height,0,-1) then
     local prevForeground = gpu.getForeground()
     local prevBackground = gpu.getBackground()
     gpu.setForeground(defaultForegroundColor)
@@ -61,7 +62,7 @@ local function newLine()
   end
 end
 
-function parseCodeNumbers(code)
+local function parseCodeNumbers(code)
   o = {}
   for num in code:sub(3,-2):gmatch("[^;]+") do
     table.insert(o,tonumber(num))
@@ -69,13 +70,16 @@ function parseCodeNumbers(code)
   return o
 end
 
-function _G.print(text,endNewLine)
+function _G.print(text, endNewLine, wordWrap)
 
   -- you don't know how tiring this was just for ANSI escape code support
 
-  if endNewLine==nil then
+  if endNewLine == nil then
     endNewLine = true
   end
+  if wordWrap == nil then
+    wordWrap = true
+  end
 
   if not text or not tostring(text) then
     return
@@ -93,7 +97,7 @@ function _G.print(text,endNewLine)
     end
     gpu.set(termlib.cursorPosX,termlib.cursorPosY,section)
     termlib.cursorPosX = termlib.cursorPosX+unicode.wlen(section)
-    if termlib.cursorPosX>width then
+    if termlib.cursorPosX>width and wordWrap then
       newLine()
     end
     section=""
@@ -162,13 +166,18 @@ end
 
 function _G.clear()
   local xRes, yRes = gpu.getResolution()
+  gpu.setForeground(defaultForegroundColor)
+  gpu.setBackground(defaultBackgroundColor)
   gpu.fill(1,1,xRes,yRes," ")
   termlib.cursorPosX, termlib.cursorPosY = 1, 1
 end
 
-function _G.read(readHistoryType)
+function _G.read(readHistoryType, prefix, defaultText)
   checkArg(1, readHistoryType, "string", "nil")
-  local curtext = ""
+  checkArg(2, prefix, "string", "nil")
+  checkArg(3, defaultText, "string", "nil")
+  local curtext = defaultText or ""
+  local prefix = prefix or ""
   local RHIndex
   if readHistoryType then
     if not termlib.readHistory[readHistoryType] then
@@ -179,13 +188,10 @@ function _G.read(readHistoryType)
     RHIndex = #termlib.readHistory[readHistoryType] -- read history index
   end
   local cursorPosX, cursorPosY = termlib.cursorPosX, termlib.cursorPosY
+  print(prefix .. curtext .. "\27[107m ", false)
   local cursorWhite = true
   while true do
-    if cursorWhite then
+    --ocelot.log(curtext)
-      print("\27[107m ", false)
-    else
-      print(" ", false)
-    end
     termlib.cursorPosX = termlib.cursorPosX - 1
     local args = {event.pull("key_down", 0.5)}
     if args[4] then
@@ -194,51 +200,56 @@ function _G.read(readHistoryType)
       local key = keyboard.keys[keycode]
       if key == "up" and readHistoryType then
         termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-        print(curtext .. " ", false)
+        print(prefix .. curtext .. " ", false)
         RHIndex = RHIndex - 1
         if RHIndex <= 0 then
           RHIndex = 1
         end
         termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-        print(termlib.readHistory[readHistoryType][RHIndex] .. string.rep(" ", unicode.wlen(curtext) - unicode.wlen(termlib.readHistory[readHistoryType][RHIndex])), false)
+        print(prefix .. termlib.readHistory[readHistoryType][RHIndex] .. string.rep(" ", unicode.wlen(curtext) - unicode.wlen(termlib.readHistory[readHistoryType][RHIndex])), false)
         curtext = termlib.readHistory[readHistoryType][RHIndex]
       end
       if key == "down" and readHistoryType then
         termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-        print(curtext .. " ", false)
+        print(prefix .. curtext .. " ", false)
         RHIndex = RHIndex + 1
         if RHIndex > #termlib.readHistory[readHistoryType] then
           RHIndex = #termlib.readHistory[readHistoryType]
         end
         termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-        print(termlib.readHistory[readHistoryType][RHIndex] .. string.rep(" ", unicode.wlen(curtext) - unicode.wlen(termlib.readHistory[readHistoryType][RHIndex])), false)
+        print(prefix .. termlib.readHistory[readHistoryType][RHIndex] .. string.rep(" ", unicode.wlen(curtext) - unicode.wlen(termlib.readHistory[readHistoryType][RHIndex])), false)
         curtext = termlib.readHistory[readHistoryType][RHIndex]
       end
+      if key == "back" then
+        curtext = curtext:sub(1, #curtext-1)
+        termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
+        print(prefix .. curtext.."  ", false)
+      end
+      if key == "enter" then
+        termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
+        print(prefix .. curtext .. " ")
+        if readHistoryType then
+          while #termlib.readHistory[readHistoryType] > 50 do
+            table.remove(termlib.readHistory[readHistoryType], 1)
+          end
+        end
+        return curtext
+      end
       if args[3] >= 32 and args[3] <= 126 then
         curtext = curtext .. (unicode.char(args[3]) or "")
         if readHistoryType then
           termlib.readHistory[readHistoryType][RHIndex] = curtext
         end
-      else
-        if key == "back" then
-          curtext = curtext:sub(1, #curtext-1)
-          termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-          print(curtext.."  ", false)
-        elseif key == "enter" then
-          termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-          print(curtext .. " ")
-          if readHistoryType then
-            while #termlib.readHistory[readHistoryType] > 50 do
-              table.remove(termlib.readHistory[readHistoryType], 1)
-            end
-          end
-          return curtext
-        end
       end
       termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
-      print(curtext, false)
+      print(prefix .. curtext, false)
     else
       cursorWhite = not cursorWhite
     end
+    if cursorWhite then
+      print("\27[107m ", false)
+    else
+      print(" ", false)
+    end
   end
 end

halyde/lib/filesystem.lua

@@ -48,7 +48,12 @@ function filesystem.open(path, mode) -- opens a file and returns its handle
     return nil, "invalid handle type"
   end
   local address, absPath = filesystem.processPath(path)
-  local handle = component.invoke(address, "open", absPath, mode)
+  local handleArgs = {component.invoke(address, "open", absPath, mode)}
+  local handle = handleArgs[1]
+  if not handle then
+    return table.unpack(handleArgs)
+  end
+  handleArgs = nil
   local properHandle = {}
   properHandle.handle = handle
   properHandle.address = address

halyde/lib/raster.lua

@@ -1,11 +1,11 @@
 local raster = {
-    ["units"]={},
+  ["units"]={},
-    ["defaultBackgroundColor"]=0x000000,
+  ["defaultBackgroundColor"]=0x000000,
-    ["defaultForegroundColor"]=0xFFFFFF,
+  ["defaultForegroundColor"]=0xFFFFFF,
-    ["displayWidth"]=0,
+  ["displayWidth"]=0,
-    ["displayHeight"]=0,
+  ["displayHeight"]=0,
-    ["charWidth"]=0,
+  ["charWidth"]=0,
-    ["charHeight"]=0
+  ["charHeight"]=0
 }
 
 -- local ocelot = component.proxy(component.list("ocelot")())
@@ -19,393 +19,398 @@ local renderBuffer = nil
 -- braille rendering
 
 function raster.units.charToBraille(x,y)
-    return x*2,y*4
+  return x*2,y*4
 end
 
 function raster.units.brailleToChar(x,y)
-    return math.ceil(x/2),math.ceil(y/4)
+  return math.ceil(x/2),math.ceil(y/4)
 end
 
 function raster.init(width, height, bgcolor)
-    -- NOTE: Width and height are in characters, not pixels in braille.
+  -- NOTE: Width and height are in characters, not pixels in braille.
-    -- If the width and height are nil, the entire screen will be used.
+  -- If the width and height are nil, the entire screen will be used.
-    if width==nil and height==nil then
+  if width==nil and height==nil then
-        width, height = gpu.getResolution()
+    width, height = gpu.getResolution()
-    end
+  end
 
-    for i = 1, width*height do
+  for i = 1, width*height do
-        chunksAffected[i] = true
+    chunksAffected[i] = true
-    end
+  end
-    raster.charWidth = width
+  raster.charWidth = width
-    raster.charHeight = height
+  raster.charHeight = height
 
-    width, height = raster.units.charToBraille(width, height)
+  width, height = raster.units.charToBraille(width, height)
-    
+  
-    bgcolor = bgcolor or raster.defaultBackgroundColor;
+  bgcolor = bgcolor or raster.defaultBackgroundColor
 
-    for i = 1, width*height do
+  raster.displayWidth = width
-        display[i] = bgcolor
+  raster.displayHeight = height
-    end
-    raster.displayWidth = width
-    raster.displayHeight = height
 
-    pcall(function()
+  pcall(function()
-        renderBuffer = gpu.allocateBuffer()
+    renderBuffer = gpu.allocateBuffer()
-    end)
+  end)
 end
 
 function raster.set(x, y, color)
-    if x<1 or x>raster.displayWidth or y<1 or y>raster.displayHeight then
+  if x<1 or x>raster.displayWidth or y<1 or y>raster.displayHeight then
-        return false
+    return false
-    end
+  end
 
-    color = color or raster.defaultForegroundColor
+  color = color or raster.defaultForegroundColor
-    local i = x+y*raster.displayWidth
+  local i = x+y*raster.displayWidth
-    display[i] = color
+  display[i] = color
 
-    local ci = math.floor((x-1)/2)+math.floor((y-1)/4)*raster.charWidth+1
+  local ci = math.floor((x-1)/2)+math.floor((y-1)/4)*raster.charWidth+1
-    -- ocelot.log(x..","..y..":"..ci)
+  -- ocelot.log(x..","..y..":"..ci)
-    chunksAffected[ci] = true
+  chunksAffected[ci] = true
 
-    return true
+  return true
 end
 
 function raster.get(x, y)
-    local i = x+y*raster.displayWidth
+  local i = x+y*raster.displayWidth
-    return display[i] or 0
+  return display[i] or 0
 end
 
 local function stats(arr)
-    local out = {}
+  local out = {}
-    for i=1,#arr do
+  for i=1,#arr do
-        local v = arr[i]
+    local v = arr[i]
-        if out[v]==nil then
+    if out[v]==nil then
-            out[v]=1
+      out[v]=1
-        else
+    else
-            out[v] = out[v] + 1
+      out[v] = out[v] + 1
-        end
     end
-    return out
+  end
+  return out
 end
 
 local function getKeys(t)
-    local keys = {}
+  local keys = {}
-    for key, _ in pairs(t) do
+  for key, _ in pairs(t) do
-        table.insert(keys, key)
+    table.insert(keys, key)
-    end
+  end
-    return keys
+  return keys
 end
 
 local function colorDifference(a,b)
-    return ((a>>16)&255)-((b>>16)&255)+((a>>8)&255)-((b>>8)&255)+(a&255)-(b&255)
+  return ((a>>16)&255)-((b>>16)&255)+((a>>8)&255)-((b>>8)&255)+(a&255)-(b&255)
 end
 
 local function limitTwoColors(arr)
-    local colors = getKeys(stats(arr))
+  local colors = getKeys(stats(arr))
-    for i=1,#arr do
+  for i=1,#arr do
-        local v=arr[i]
+    local v=arr[i]
-        if v==colors[1] then
+    if v==colors[1] then
-            arr[i]=0
+      arr[i]=0
-            goto continue
+      goto continue
-        elseif v==colors[2] then
+    elseif v==colors[2] then
-            arr[i]=1
+      arr[i]=1
-            goto continue
+      goto continue
-        else
+    else
-            --error("Pixel is not in the two colors (raster.lua:90)")
+      --error("Pixel is not in the two colors (raster.lua:90)")
-            -- get closest color so atleast it kinda shows
+      -- get closest color so atleast it kinda shows
-            if colorDifference(v,colors[1])<colorDifference(v,colors[2]) then
+      if colorDifference(v,colors[1])<colorDifference(v,colors[2]) then
-                arr[i]=0
+        arr[i]=0
-            else
+      else
-                arr[i]=1
+        arr[i]=1
-            end
+      end
-        end
-        ::continue::
     end
-    return arr,colors[1] or 0,colors[2] or 0
+    ::continue::
+  end
+  return arr,colors[1] or 0,colors[2] or 0
 end
 
 local function arrayToBraille(arr)
-    local codePoint = 0x2800
+  local codePoint = 0x2800
-    for i=1,8 do
+  for i=1,8 do
-        codePoint = codePoint | arr[i]<<(i-1)
+    codePoint = codePoint | arr[i]<<(i-1)
-    end
+  end
-    return utf8.char(codePoint)
+  return utf8.char(codePoint)
 end
 
 function raster.update()
-    if renderBuffer~=nil then
+  if renderBuffer~=nil then
-        gpu.setActiveBuffer(renderBuffer)
+    gpu.setActiveBuffer(renderBuffer)
-    end
+  end
-    for y=1,raster.displayHeight,4 do
+  for y=1,raster.displayHeight,4 do
-        -- gpu.set(0,0,tostring(y))
+    -- gpu.set(0,0,tostring(y))
-        for x=1,raster.displayWidth,2 do
+    for x=1,raster.displayWidth,2 do
-            local ci = math.floor(x/2)+math.floor(y/4)*raster.charWidth+1
+      local ci = math.floor(x/2)+math.floor(y/4)*raster.charWidth+1
-            if chunksAffected[ci] then
+      if chunksAffected[ci] then
-                local chunk = {
+        local chunk = {
-                    raster.get(x,y),
+          raster.get(x,y),
-                    raster.get(x,y+1),
+          raster.get(x,y+1),
-                    raster.get(x,y+2),
+          raster.get(x,y+2),
-                    raster.get(x+1,y),
+          raster.get(x,y+3),
-                    raster.get(x+1,y+1),
+          raster.get(x+1,y),
-                    raster.get(x+1,y+2),
+          raster.get(x+1,y+1),
-                    raster.get(x,y+3),
+          raster.get(x+1,y+2),
-                    raster.get(x+1,y+3)
+          raster.get(x+1,y+3)
-                }
+        }
-                local colorA = nil
+        local colorA = nil
-                local colorB = nil
+        local colorB = nil
-                chunk,colorA,colorB = limitTwoColors(chunk)
+        chunk,colorA,colorB = limitTwoColors(chunk)
-                -- print(tostring(colorA)..","..tostring(colorB))
+        -- print(tostring(colorA)..","..tostring(colorB))
-                cx,cy=raster.units.brailleToChar(x,y)
+        cx,cy=raster.units.brailleToChar(x,y)
-                gpu.setBackground(colorA)
+        gpu.setBackground(colorA)
-                gpu.setForeground(colorB)
+        gpu.setForeground(colorB)
-                -- gpu.set(cx,cy,tostring(colorB/0xFFFFFF))
+        -- gpu.set(cx,cy,tostring(colorB/0xFFFFFF))
-                gpu.set(cx,cy,arrayToBraille(chunk))
+        gpu.set(cx,cy,arrayToBraille(chunk))
-                chunksAffected[ci] = false
+        chunksAffected[ci] = false
-            end
+      end
-        end
-    end
-    if renderBuffer~=nil then
-        gpu.bitblt()
-        gpu.setActiveBuffer(0)
     end
+  end
+  if renderBuffer~=nil then
+    gpu.bitblt()
+    gpu.setActiveBuffer(0)
+  end
+end
+
+function raster.clear()
+  if renderBuffer~=nil then
+    gpu.setActiveBuffer(renderBuffer)
+  end
+  clear()
+  display = {}
 end
 
 function raster.free()
-    if renderBuffer==nil then
+  if renderBuffer==nil then
-        return true
+    return true
-    else
+  else
-        return gpu.freeBuffer(renderBuffer)
+    return gpu.freeBuffer(renderBuffer)
-    end
+  end
 end
 
 -- advanced rendering
 
 function raster.drawLine(x1, y1, x2, y2, color)
-    x1, y1, x2, y2 = math.floor(x1), math.floor(y1), math.floor(x2), math.floor(y2)
+  x1, y1, x2, y2 = math.floor(x1), math.floor(y1), math.floor(x2), math.floor(y2)
+  
+  local dx = math.abs(x2 - x1)
+  local dy = math.abs(y2 - y1)
+  
+  local sx = x1 < x2 and 1 or -1
+  local sy = y1 < y2 and 1 or -1
+  
+  local err = dx - dy
+  
+  while true do
+    raster.set(x1, y1, color)
     
-    local dx = math.abs(x2 - x1)
+    if x1 == x2 and y1 == y2 then
-    local dy = math.abs(y2 - y1)
+      break
-    
-    local sx = x1 < x2 and 1 or -1
-    local sy = y1 < y2 and 1 or -1
-    
-    local err = dx - dy
-    
-    while true do
-      raster.set(x1, y1, color)
-      
-      if x1 == x2 and y1 == y2 then
-        break
-      end
-      
-      local e2 = 2 * err
-      
-      if e2 > -dy then
-        err = err - dy
-        x1 = x1 + sx
-      end
-      
-      if e2 < dx then
-        err = err + dx
-        y1 = y1 + sy
-      end
     end
+    
+    local e2 = 2 * err
+    
+    if e2 > -dy then
+      err = err - dy
+      x1 = x1 + sx
+    end
+    
+    if e2 < dx then
+      err = err + dx
+      y1 = y1 + sy
+    end
+  end
 end
 
 function raster.drawRect(x1,y1,x2,y2,col)
-    x1, y1, x2, y2 = math.floor(x1), math.floor(y1), math.floor(x2), math.floor(y2)
+  x1, y1, x2, y2 = math.floor(x1), math.floor(y1), math.floor(x2), math.floor(y2)
-    if x1 > x2 then x1, x2 = x2, x1 end
+  if x1 > x2 then x1, x2 = x2, x1 end
-    if y1 > y2 then y1, y2 = y2, y1 end
+  if y1 > y2 then y1, y2 = y2, y1 end
-    for x=x1,x2 do
+  for x=x1,x2 do
-        raster.set(x,y1,col)
+    raster.set(x,y1,col)
-        raster.set(x,y2,col)
+    raster.set(x,y2,col)
-    end
+  end
-    for y=y1+1,y2-1 do
+  for y=y1+1,y2-1 do
-        raster.set(x1,y,col)
+    raster.set(x1,y,col)
-        raster.set(x2,y,col)
+    raster.set(x2,y,col)
-    end
+  end
 end
 
 function raster.fillRect(x1,y1,x2,y2,col)
-    x1, y1, x2, y2 = math.floor(x1), math.floor(y1), math.floor(x2), math.floor(y2)
+  x1, y1, x2, y2 = math.floor(x1), math.floor(y1), math.floor(x2), math.floor(y2)
-    if x1 > x2 then x1, x2 = x2, x1 end
+  if x1 > x2 then x1, x2 = x2, x1 end
-    if y1 > y2 then y1, y2 = y2, y1 end
+  if y1 > y2 then y1, y2 = y2, y1 end
-    for x=x1,x2 do
+  for x=x1,x2 do
-        for y=y1,y2 do
+    for y=y1,y2 do
-            raster.set(x,y,col)
+      raster.set(x,y,col)
-        end
     end
+  end
 end
 
 function raster.drawCircle(xc, yc, radius, color)
-    xc=math.floor(xc)
+  xc=math.floor(xc)
-    yc=math.floor(yc)
+  yc=math.floor(yc)
-    radius=math.floor(radius)
+  radius=math.floor(radius)
-    local x = 0
+  local x = 0
-    local y = radius
+  local y = radius
-    local d = 3 - 2 * radius
+  local d = 3 - 2 * radius
+  
+  while y >= x do
+    -- Draw 8 symmetric points
+    raster.set(xc + x, yc + y, color)
+    raster.set(xc - x, yc + y, color)
+    raster.set(xc + x, yc - y, color)
+    raster.set(xc - x, yc - y, color)
+    raster.set(xc + y, yc + x, color)
+    raster.set(xc - y, yc + x, color)
+    raster.set(xc + y, yc - x, color)
+    raster.set(xc - y, yc - x, color)
     
-    while y >= x do
+    if d < 0 then
-        -- Draw 8 symmetric points
+      d = d + 4 * x + 6
-        raster.set(xc + x, yc + y, color)
+    else
-        raster.set(xc - x, yc + y, color)
+      d = d + 4 * (x - y) + 10
-        raster.set(xc + x, yc - y, color)
+      y = y - 1
-        raster.set(xc - x, yc - y, color)
-        raster.set(xc + y, yc + x, color)
-        raster.set(xc - y, yc + x, color)
-        raster.set(xc + y, yc - x, color)
-        raster.set(xc - y, yc - x, color)
-        
-        if d < 0 then
-            d = d + 4 * x + 6
-        else
-            d = d + 4 * (x - y) + 10
-            y = y - 1
-        end
-        x = x + 1
     end
+    x = x + 1
+  end
 end
 
 function raster.drawEllipse(x1, y1, x2, y2, color)
-    if x1 > x2 then x1, x2 = x2, x1 end
+  if x1 > x2 then x1, x2 = x2, x1 end
-    if y1 > y2 then y1, y2 = y2, y1 end
+  if y1 > y2 then y1, y2 = y2, y1 end
-    
+  
-    local xc = math.floor((x1 + x2) / 2)
+  local xc = math.floor((x1 + x2) / 2)
-    local yc = math.floor((y1 + y2) / 2)
+  local yc = math.floor((y1 + y2) / 2)
-    
+  
-    local a = math.floor((x2 - x1) / 2)
+  local a = math.floor((x2 - x1) / 2)
-    local b = math.floor((y2 - y1) / 2)
+  local b = math.floor((y2 - y1) / 2)
-    
+  
-    if a <= 0 or b <= 0 then
+  if a <= 0 or b <= 0 then
-        return
+    return
+  end
+  
+  if a == b then
+    raster.drawCircle(xc, yc, a, color)
+    return
+  end
+  
+  if a <= 1 and b <= 1 then
+    raster.set(xc, yc, color)
+    return
+  elseif a <= 1 then
+    for y = yc - b, yc + b do
+        raster.set(xc, y, color)
     end
-    
+    return
-    if a == b then
+  elseif b <= 1 then
-        raster.drawCircle(xc, yc, a, color)
+    for x = xc - a, xc + a do
-        return
+        raster.set(x, yc, color)
     end
+    return
+  end
+  
+  local x = 0
+  local y = b
+  local a2 = a * a
+  local b2 = b * b
+  
+  local d1 = b2 - (a2 * b) + (0.25 * a2)
+  local dx = 2 * b2 * x
+  local dy = 2 * a2 * y
+  
+  while dx < dy do
+    raster.set(xc + x, yc + y, color)
+    raster.set(xc - x, yc + y, color)
+    raster.set(xc + x, yc - y, color)
+    raster.set(xc - x, yc - y, color)
     
-    if a <= 1 and b <= 1 then
+    if d1 < 0 then
-        raster.set(xc, yc, color)
+      x = x + 1
-        return
+      dx = dx + (2 * b2)
-    elseif a <= 1 then
+      d1 = d1 + dx + b2
-        for y = yc - b, yc + b do
+    else
-            raster.set(xc, y, color)
+      x = x + 1
-        end
+      y = y - 1
-        return
+      dx = dx + (2 * b2)
-    elseif b <= 1 then
+      dy = dy - (2 * a2)
-        for x = xc - a, xc + a do
+      d1 = d1 + dx - dy + b2
-            raster.set(x, yc, color)
-        end
-        return
     end
+  end
+  
+  local d2 = b2 * (x + 0.5) * (x + 0.5) + a2 * (y - 1) * (y - 1) - a2 * b2
+  
+  while y >= 0 do
+    raster.set(xc + x, yc + y, color)
+    raster.set(xc - x, yc + y, color)
+    raster.set(xc + x, yc - y, color)
+    raster.set(xc - x, yc - y, color)
     
-    local x = 0
+    if d2 > 0 then
-    local y = b
+      y = y - 1
-    local a2 = a * a
+      dy = dy - (2 * a2)
-    local b2 = b * b
+      d2 = d2 - dy + a2
-    
+    else
-    local d1 = b2 - (a2 * b) + (0.25 * a2)
+      y = y - 1
-    local dx = 2 * b2 * x
+      x = x + 1
-    local dy = 2 * a2 * y
+      dx = dx + (2 * b2)
-    
+      dy = dy - (2 * a2)
-    while dx < dy do
+      d2 = d2 + dx - dy + a2
-        raster.set(xc + x, yc + y, color)
-        raster.set(xc - x, yc + y, color)
-        raster.set(xc + x, yc - y, color)
-        raster.set(xc - x, yc - y, color)
-        
-        if d1 < 0 then
-            x = x + 1
-            dx = dx + (2 * b2)
-            d1 = d1 + dx + b2
-        else
-            x = x + 1
-            y = y - 1
-            dx = dx + (2 * b2)
-            dy = dy - (2 * a2)
-            d1 = d1 + dx - dy + b2
-        end
-    end
-    
-    local d2 = b2 * (x + 0.5) * (x + 0.5) + a2 * (y - 1) * (y - 1) - a2 * b2
-    
-    while y >= 0 do
-        raster.set(xc + x, yc + y, color)
-        raster.set(xc - x, yc + y, color)
-        raster.set(xc + x, yc - y, color)
-        raster.set(xc - x, yc - y, color)
-        
-        if d2 > 0 then
-            y = y - 1
-            dy = dy - (2 * a2)
-            d2 = d2 - dy + a2
-        else
-            y = y - 1
-            x = x + 1
-            dx = dx + (2 * b2)
-            dy = dy - (2 * a2)
-            d2 = d2 + dx - dy + a2
-        end
     end
+  end
 end
 
 function raster.fillCircle(x, y, r, color)
-    x, y = math.floor(x + 0.5), math.floor(y + 0.5)
+  x, y = math.floor(x + 0.5), math.floor(y + 0.5)
-    r = math.floor(r + 0.5)
+  r = math.floor(r + 0.5)
-    
+  
-    if r <= 0 then return end
+  if r <= 0 then return end
-    
+  
-    local minX, maxX = x - r, x + r
+  local minX, maxX = x - r, x + r
-    local minY, maxY = y - r, y + r
+  local minY, maxY = y - r, y + r
-    
+  
-    for py = minY, maxY do
+  for py = minY, maxY do
-        for px = minX, maxX do
+    for px = minX, maxX do
-            local dx, dy = px - x, py - y
+      local dx, dy = px - x, py - y
-            local distSquared = dx*dx + dy*dy
+      local distSquared = dx*dx + dy*dy
-            
+      
-            if distSquared <= r*r then
+      if distSquared <= r*r then
-                raster.set(px, py, color)
+        raster.set(px, py, color)
-            end
+      end
-        end
     end
+  end
 end
 
 function raster.fillEllipse(x1, y1, x2, y2, color)
-    local centerX = (x1 + x2) / 2
+  local centerX = (x1 + x2) / 2
-    local centerY = (y1 + y2) / 2
+  local centerY = (y1 + y2) / 2
-    
+  
-    local a = math.abs(x2 - x1) / 2
+  local a = math.abs(x2 - x1) / 2
-    local b = math.abs(y2 - y1) / 2
+  local b = math.abs(y2 - y1) / 2
-    
+  
-    centerX = math.floor(centerX + 0.5)
+  centerX = math.floor(centerX + 0.5)
-    centerY = math.floor(centerY + 0.5)
+  centerY = math.floor(centerY + 0.5)
-    a = math.floor(a + 0.5)
+  a = math.floor(a + 0.5)
-    b = math.floor(b + 0.5)
+  b = math.floor(b + 0.5)
-    
+  
-    if a <= 0 or b <= 0 then return end
+  if a <= 0 or b <= 0 then return end
-    
+  
-    if a == b then
+  if a == b then
-        raster.fillCircle(centerX, centerY, a, color)
+    raster.fillCircle(centerX, centerY, a, color)
-        return
+    return
-    end
+  end
-    
+  
-    local minX = centerX - a
+  local minX = centerX - a
-    local maxX = centerX + a
+  local maxX = centerX + a
-    local minY = centerY - b
+  local minY = centerY - b
-    local maxY = centerY + b
+  local maxY = centerY + b
-    
+  
-    for y = minY, maxY do
+  for y = minY, maxY do
-        for x = minX, maxX do
+    for x = minX, maxX do
-            local dx = x - centerX
+      local dx = x - centerX
-            local dy = y - centerY
+      local dy = y - centerY
-            local value = (dx*dx)/(a*a) + (dy*dy)/(b*b)
+      local value = (dx*dx)/(a*a) + (dy*dy)/(b*b)
-            
+      
-            if value <= 1 then
+      if value <= 1 then
-                raster.set(x, y, color)
+        raster.set(x, y, color)
-            end
+      end
-        end
     end
+  end
 end
 
-return raster
+return raster

home/longfile.txt

@@ -0,0 +1,67 @@
+This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file!
+This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file!
+This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file!
+This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file!
+This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file! This is a long file!
+This is a long line! This is a long line! This is a long line! This is a long line! This is a long line! This is a long line! This is a long line! This is a long line! This is a long line!
+This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line! This is a longer line!
+
+This is a short line!
+
+This is a short line!
+
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This has a lot of lines!
+This is the last line!