forgot to commit openos

data/openos/boot/03_io.lua

@@ -0,0 +1,36 @@
+local buffer = require("buffer")
+local tty_stream = require("tty").stream
+
+local core_stdin = buffer.new("r", tty_stream)
+local core_stdout = buffer.new("w", tty_stream)
+local core_stderr = buffer.new("w", setmetatable(
+{
+  write = function(_, str)
+    return tty_stream:write("\27[31m"..str.."\27[37m")
+  end
+}, {__index=tty_stream}))
+
+core_stdout:setvbuf("no")
+core_stderr:setvbuf("no")
+core_stdin.tty = true
+core_stdout.tty = true
+core_stderr.tty = true
+
+core_stdin.close = tty_stream.close
+core_stdout.close = tty_stream.close
+core_stderr.close = tty_stream.close
+
+local io_mt = getmetatable(io) or {}
+io_mt.__index = function(_, k)
+  return
+    k == 'stdin' and io.input() or
+    k == 'stdout' and io.output() or
+    k == 'stderr' and io.error() or
+    nil
+end
+
+setmetatable(io, io_mt)
+
+io.input(core_stdin)
+io.output(core_stdout)
+io.error(core_stderr)