v0.7.0 - Added basic CLI tools: ls, cd, cp, mv, rm, lua

halyde/core/termlib.lua

@@ -0,0 +1,190 @@
+local event = import("event")
+--local keyboard = import("keyboard")
+
+local gpu = component.proxy(component.list("gpu")()) -- replace with component.gpu once implemented
+_G.termlib = {}
+termlib.cursorPosX = 1
+termlib.cursorPosY = 1
+
+local width, height = gpu.getResolution()
+termlib.width = width
+termlib.height = height
+
+local ANSIColorPalette = {
+  ["dark"] = {
+    [0] = 0x000000,
+    [1] = 0x800000,
+    [2] = 0x008000,
+    [3] = 0x808000,
+    [4] = 0x000080,
+    [5] = 0x800080,
+    [6] = 0x008080,
+    [7] = 0xC0C0C0
+  },
+  ["bright"] = {
+    [0] = 0x808080,
+    [1] = 0xFF0000,
+    [2] = 0x00FF00,
+    [3] = 0xFFFF00,
+    [4] = 0x0000FF,
+    [5] = 0xFF00FF,
+    [6] = 0x00FFFF,
+    [7] = 0xFFFFFF
+  }
+}
+
+defaultForegroundColor = ANSIColorPalette["bright"][7]
+defaultBackgroundColor = ANSIColorPalette["dark"][0]
+
+gpu.setForeground(defaultForegroundColor)
+gpu.setBackground(defaultBackgroundColor)
+
+local function scrollDown()
+  if gpu.copy(0,1,width,height,0,-1) then
+    gpu.set(1,height,string.rep(" ",width))
+    termlib.cursorPosY=height
+  end
+end
+
+local function newLine()
+  termlib.cursorPosX=1
+  termlib.cursorPosY = termlib.cursorPosY + 1
+  if termlib.cursorPosY>height then
+    scrollDown()
+  end
+end
+
+function parseCodeNumbers(code)
+  o = {}
+  for num in code:sub(3,-2):gmatch("[^;]+") do
+    table.insert(o,tonumber(num))
+  end
+  return o
+end
+
+function _G.print(text,endNewLine)
+
+  -- you don't know how tiring this was just for ANSI escape code support
+
+  if endNewLine==nil then
+    endNewLine = true
+  end
+
+  if not text or not tostring(text) then
+    return
+  end
+  text = "\27[0m" .. text:gsub("\t", "  ")
+  text = tostring(text)
+  readBreak = 0
+  -- readBreak is for when, inside the for loop, there normally would have been an increase in the "i" variable because it has read more than one character.
+  -- unfortunately, changing the "i" variable would have unpredictable effects, so to not risk anything, this workaround was done.
+  section = ""
+
+  function printSection()
+    if #section==0 then
+      return
+    end
+    gpu.set(termlib.cursorPosX,termlib.cursorPosY,section)
+    termlib.cursorPosX = termlib.cursorPosX+unicode.wlen(section)
+    if termlib.cursorPosX>width then
+      newLine()
+    end
+    section=""
+  end
+
+  for i=1,#text do
+    if readBreak>0 then
+      readBreak = readBreak - 1
+      goto continue
+    end
+
+    if string.byte(text,i)==10 then
+      printSection()
+      newLine()
+    elseif string.byte(text,i)==13 then
+      printSection()
+      termlib.cursorPosX=1
+    elseif string.byte(text,i)==0x1b and i<=#text-2 then
+      printSection()
+      --ocelot.log("0x1b char detected")
+      codeType = string.sub(text,i+1,i+1)
+      if codeType=="[" then
+        -- Control Sequence Introducer
+        --ocelot.log("Control Sequence Introducer")
+        codeEndIdx = string.find(text,"m",i)
+        code = string.sub(text,i,codeEndIdx)
+        --ocelot.log("Code: "..code.." ("..i..", "..codeEndIdx..")")
+        readBreak = readBreak + #code - 1
+        nums = parseCodeNumbers(code)
+        codeEnd = code:sub(-1)
+        --ocelot.log("Code end: "..codeEnd..", "..#codeEnd)
+        if codeEnd == "m" then
+          -- Select Graphic Rendition
+          --ocelot.log("Select Graphic Rendition, ID "..nums[1])
+          if nums[1]>=30 and nums[1]<=37 then
+            gpu.setForeground(ANSIColorPalette["dark"][nums[1]%10])
+          end
+          if nums[1]==39 or nums[1]==0 then
+            gpu.setForeground(defaultForegroundColor)
+          end
+          if nums[1]>=40 and nums[1]<=47 then
+            gpu.setBackground(ANSIColorPalette["dark"][nums[1]%10])
+          end
+          if nums[1]==49 or nums[1]==0 then
+            gpu.setBackground(defaultBackgroundColor)
+          end
+          if nums[1]>=90 and nums[1]<=97 then
+            gpu.setForeground(ANSIColorPalette["bright"][nums[1]%10])
+          end
+          if nums[1]>=100 and nums[1]<=107 then
+            gpu.setBackground(ANSIColorPalette["bright"][nums[1]%10])
+          end
+        end
+      end
+    else
+      --gpu.set(termlib.cursorPosX,termlib.cursorPosY,string.sub(text,i,i))
+      section = section..string.sub(text,i,i)
+    end
+    ::continue::
+  end
+  printSection()
+  if endNewLine then
+    newLine()
+  end
+end
+
+function _G.clear()
+  local xRes, yRes = gpu.getResolution()
+  gpu.fill(1,1,xRes,yRes," ")
+  termlib.cursorPosX, termlib.cursorPosY = 1, 1
+end
+
+function _G.read()
+  local curtext = ""
+  local cursorPosX, cursorPosY = termlib.cursorPosX, termlib.cursorPosY
+  local cursorWhite = true
+  while true do
+    local args = {event.pull("key_down", 0.5)}
+    if args[4] then
+      local keycode = args[4]
+      local key = keyboard.keys[keycode]
+      if args[3] >= 32 and args[3] <= 126 then
+        curtext = curtext .. (unicode.char(args[3]) or "")
+      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)
+          return curtext
+        end
+      end
+      termlib.cursorPosX, termlib.cursorPosY = cursorPosX, cursorPosY
+      print(curtext, false)
+    else
+      cursorWhite = not cursorWhite
+    end
+  end
+end