forgot to commit openos

data/openos/boot/00_base.lua

@@ -0,0 +1,42 @@
+function loadfile(filename, ...)
+  if filename:sub(1,1) ~= "/" then
+    filename = (os.getenv("PWD") or "/") .. "/" .. filename
+  end
+  local handle, open_reason = require("filesystem").open(filename)
+  if not handle then
+    return nil, open_reason
+  end
+  local buffer = {}
+  while true do
+    local data, reason = handle:read(1024)
+    if not data then
+      handle:close()
+      if reason then
+        return nil, reason
+      end
+      break
+    end
+    buffer[#buffer + 1] = data
+  end
+  return load(table.concat(buffer), "=" .. filename, ...)
+end
+
+function dofile(filename)
+  local program, reason = loadfile(filename)
+  if not program then
+    return error(reason .. ':' .. filename, 0)
+  end
+  return program()
+end
+
+function print(...)
+  local args = table.pack(...)
+  local stdout = io.stdout
+  local pre = ""
+  for i = 1, args.n do
+    stdout:write(pre, (assert(tostring(args[i]), "'tostring' must return a string to 'print'")))
+    pre = "\t"
+  end
+  stdout:write("\n")
+  stdout:flush()
+end