First commit. Not even working prototype yet.

halyde/core/boot.lua

@@ -0,0 +1,31 @@
+local loadfile = ...
+local filesystem = loadfile("/halyde/lib/filesystem.lua")(loadfile)
+
+_G._OSVERSION = "Halyde 0.1.0"
+
+function _G.import(module, ...)
+  local args = table.pack(...)
+  local modulepath
+  if module:find("^/") then
+    if filesystem.exists(module) then
+      modulepath = module
+    end
+  elseif filesystem.exists("/halyde/lib/"..module..".lua") then
+    modulepath = "/halyde/lib/"..module..".lua"
+  end
+  assert(modulepath, "module not found\npossible locations:\n/halyde/lib/"..module..".lua")
+  local handle = filesystem.open(modulepath)
+  local data = ""
+  local tmpdata = ""
+  repeat
+    tmpdata = handle:read(math.huge or math.maxinteger)
+    data = data .. (tmpdata or "")
+  until not tmpdata
+  assert(load(data, "="..modulepath))(table.unpack(args))
+end
+
+--local handle = assert(filesystem.open("/bazinga.txt", "w"))
+--assert(handle:write("Bazinga!"))
+--handle:close()
+
+import("/halyde/core/cormgr.lua")

halyde/core/cormgr.lua

@@ -0,0 +1,30 @@
+_G.cormgr = {}
+_G.cormgr.corList = {}
+
+function _G.cormgr.loadCoroutine(path)
+  local cor = coroutine.create(function()
+    import(path)
+  end)
+  table.insert(_G.cormgr.corList, cor)
+  coroutine.yield()
+end
+
+function handleError(errormsg)
+  -- nothing for now
+  assert(false, errormsg)
+end
+
+_G.cormgr.loadCoroutine("/halyde/core/loader.lua")
+
+while true do
+  for i = 1, #_G.cormgr.corList do
+    local result, errormsg = coroutine.resume(_G.cormgr.corList[i])
+    if coroutine.status(_G.cormgr.corList[i]) == "dead" then
+      table.remove(_G.cormgr.corList, i)
+      if not result then
+        handleError(errormsg)
+      end
+    end
+    computer.pullSignal(1)
+  end
+end

halyde/core/loader.lua

@@ -0,0 +1,8 @@
+import("termlib")
+
+print("wait...")
+print("IT WORKS???")
+print("abab")
+print("abc\ndef")
+print("abc\tdef")
+print("aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa")

halyde/lib/component.lua

@@ -0,0 +1,17 @@
+local componentlib = {}
+
+function componentlib.get(address)
+  checkArg(1, address, "string")
+  assert(#address >= 3, "abbreviated address must be at least 3 characters long")
+  local components = component.list()
+  for currentAddress, name in pairs(components) do
+    if currentAddress:find("^" .. address) then
+      return(currentAddress)
+    end
+  end
+  return nil, "full address not found"
+end
+
+componentlib.invoke = component.invoke
+
+return(componentlib)

halyde/lib/filesystem.lua

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+local loadfile = ... -- raw loadfile from boot.lua
+local component
+
+if loadfile then
+  component = loadfile("/halyde/lib/component.lua")(loadfile)
+else
+  component = require("component")
+end
+
+local filesystem = {}
+
+function filesystem.processPath(path) -- returns the address and absolute path of a filesystem path as well as sanitizing it
+  checkArg(1, path, "string")
+  absPath = path:gsub("/+", "/"):gsub("/$", "")
+  local address = nil
+  if absPath:find("^/mnt/.../") then
+     address = component.get(path:sub(6,8))
+    if not address then
+      address = computer.getBootAddress()
+    else
+      absPath = absPath:sub(9)
+    end
+  else
+    address = computer.getBootAddress()
+  end
+  if not address then
+    return nil, "no such device"
+  end
+  return address, absPath
+end
+
+function filesystem.exists(path) -- check if path exists
+  checkArg(1, path, "string")
+  local address, absPath = filesystem.processPath(path)
+  if not address then
+    return false
+  end
+  return component.invoke(address, "exists", absPath)
+end
+
+function filesystem.open(path, mode) -- opens a file and returns its handle
+  checkArg(1, path, "string")
+  checkArg(2, mode, "string", "nil")
+  if not mode then
+    mode = "r"
+  end
+  if not (mode == "r" or mode == "w" or mode == "rb" or mode == "wb") then
+    return nil, "invalid handle type"
+  end
+  local address, absPath = filesystem.processPath(path)
+  local handle = component.invoke(address, "open", absPath, mode)
+  local properHandle = {}
+  properHandle.handle = handle
+  properHandle.address = address
+  function properHandle.read(self, amount)
+    checkArg(2, amount, "number")
+    return component.invoke(self.address, "read", self.handle, amount)
+  end
+  function properHandle.write(self, data)
+    checkArg(2, data, "string")
+    return component.invoke(self.address, "write", self.handle, data)
+  end
+  function properHandle.close(self)
+    return component.invoke(self.address, "close", self.handle)
+  end
+  return properHandle
+end
+
+return(filesystem)

halyde/lib/termlib.lua

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+local gpu = component.proxy(component.list("gpu")()) -- replace with component.gpu once implemented
+local lineNumber = 1
+
+function _G.print(text)
+  local xRes, yRes = gpu.getResolution()
+  if not text or not tostring(text) then
+    return
+  end
+  local printText = tostring(text):gsub("\t", "  ")
+  for line in printText:gmatch("([^\n]*)\n?") do
+    while #line > xRes do
+      gpu.set(1,lineNumber,line:sub(1,xRes))
+      line = line:sub(xRes+1)
+      lineNumber = lineNumber + 1
+    end
+    gpu.set(1,lineNumber,line)
+    lineNumber = lineNumber + 1
+  end
+end
+
+function _G.clear()
+  local xRes, yRes = gpu.getResolution()
+  gpu.fill(1,1,xRes,yRes," ")
+  lineNumber = 1
+end

init.lua

@@ -0,0 +1,46 @@
+local gpu = component.proxy(component.list("gpu")())
+local resx, resy = gpu.getResolution()
+
+local function loadfile(file)
+  checkArg(1, file, "string")
+  local handle = component.invoke(computer.getBootAddress(), "open", file, "r")
+  local data = ""
+  repeat
+    local tmpdata = component.invoke(computer.getBootAddress(), "read", handle, math.huge or math.maxinteger)
+    data = data .. (tmpdata or "")
+  until not tmpdata
+  component.invoke(computer.getBootAddress(), "close", handle)
+  return(assert(load(data, "=" .. file)))
+end
+
+local function handleError(errorMessage)
+  return(errorMessage.."\n \n"..debug.traceback())
+end
+
+function loadthething()
+  loadfile("/halyde/core/boot.lua")(loadfile)
+end
+
+while true do
+  gpu.setBackground(0x000000)
+  gpu.fill(1, 1, resx, resy, " ")
+  local result, reason = xpcall(loadthething, handleError)
+  if not result then
+    gpu.setBackground(0x000000)
+    gpu.fill(1, 1, resx, resy, " ")
+    gpu.setBackground(0x800000)
+    gpu.setForeground(0xFFFFFF)
+    gpu.set(2,2,"A critical error has occurred.")
+    local i = 4
+    reason = reason:gsub("\t", "  ")
+    for line in string.gmatch((reason ~= nil and tostring(reason)) or "unknown error", "([^\n]*)\n?") do
+      gpu.set(2,i,line)
+      i = i + 1
+    end
+    gpu.set(2,i+1, "Press any key to restart.")
+    local evname = ""
+    repeat
+      evname = computer.pullSignal()
+    until evname == "key_down"
+  end
+end