Nim c ffi

main.nim

# This is just an example to get you started. A typical binary package
# uses this file as the main entry point of the application.

import std/posix

type
  Winsize* = object
    ws_row*: cushort
    ws_col*: cushort
    ws_xpixel*: cushort
    ws_ypixel*: cushort

type
  Termios* = object
    c_iflag*: cuint
    c_oflag*: cuint
    c_cflag*: cuint
    c_line*: cchar
    c_cc*: array[19, cint]

proc tcgetattr*(fd: cint, tio: Termios): cint {.importc, header: "<unistd.h>".}
proc tcsetattr*(fd: cint, optional_actions: cint, tio: Termios): cint {.importc, header: "<unistd.h>".}

# let TCSAFLUSH: cint {.importc, header: "<unistd.h>".}
let TCSAFLUSH: cint = 2
# var L_ctermid{.importc, header: "<stdio.h>".}: cint


#[
157 ┆   // Signal handler to react on screen resizing.
158 ┆   struct sigaction act;
159 ┆   memset(&act, 0, sizeof(struct sigaction));
160 ┆   act.sa_handler = handle_term_resize;
161 ┆   if (sigaction(SIGWINCH, &act, NULL) == -1) {
162 ┆   ┆   perror("A sigaction() call failed");
163 ┆   ┆   abort();
164 ┆   }
165 ┆   resizeflag = 0;


]#

proc asd(x: cint) {.noconv.} =
  echo("Resizing!!")
  return

when isMainModule:
  const SIGWINCH = 28
  var s: Sigaction
  s.sa_handler = asd
  var siga = sigaction(SIGWINCH, s, nil)
  if siga != 0:
    echo("Could not sigact")

  var ws: Winsize
  var res = ioctl(STDOUT_FILENO, 0x5413, ws.addr)
  echo(ws)
  var tt: Termios
  var x = tcgetattr(STDIN_FILENO, tt)
  echo(tt)
  var r = tcsetattr(STDIN_FILENO, TCSAFLUSH, tt)
  echo(r, r)

  discard sleep(10)
  var zzx = "a\x00b"
  echo(zzx)
  echo(zzx.len)