/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
│                                                                              │
│ Permission to use, copy, modify, and/or distribute this software for         │
│ any purpose with or without fee is hereby granted, provided that the         │
│ above copyright notice and this permission notice appear in all copies.      │
│                                                                              │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
│ PERFORMANCE OF THIS SOFTWARE.                                                │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/calls/internal.h"
#include "libc/calls/struct/termios.h"
#include "libc/calls/ttydefaults.h"
#include "libc/nt/console.h"
#include "libc/nt/enum/consolemodeflags.h"
#include "libc/nt/struct/consolescreenbufferinfoex.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/termios.h"
#include "libc/sysv/errfuns.h"

textwindows int tcgetattr_nt(int ignored, struct termios *tio) {
  int64_t in, out;
  bool32 inok, outok;
  uint32_t inmode, outmode;
  inok = GetConsoleMode((in = __getfdhandleactual(0)), &inmode);
  outok = GetConsoleMode((out = __getfdhandleactual(1)), &outmode);
  if (inok | outok) {
    bzero(tio, sizeof(*tio));

    tio->c_cflag |= CS8;

    tio->c_cc[VINTR] = CTRL('C');
    tio->c_cc[VQUIT] = CTRL('\\');
    tio->c_cc[VERASE] = CTRL('?');
    tio->c_cc[VKILL] = CTRL('U');
    tio->c_cc[VEOF] = CTRL('D');
    tio->c_cc[VMIN] = CTRL('A');
    tio->c_cc[VSTART] = CTRL('Q');
    tio->c_cc[VSTOP] = CTRL('S');
    tio->c_cc[VSUSP] = CTRL('Z');
    tio->c_cc[VREPRINT] = CTRL('R');
    tio->c_cc[VDISCARD] = CTRL('O');
    tio->c_cc[VWERASE] = CTRL('W');
    tio->c_cc[VLNEXT] = CTRL('V');

    if (inok) {
      if (inmode & kNtEnableLineInput) {
        tio->c_lflag |= ICANON;
      }
      if (inmode & kNtEnableEchoInput) {
        tio->c_lflag |= ECHO;
      }
      if (inmode & kNtEnableProcessedInput) {
        tio->c_lflag |= IEXTEN | ISIG;
        if (tio->c_lflag | ECHO) {
          tio->c_lflag |= ECHOE;
        }
      }
    }

    if (outok) {
      if (outmode & kNtEnableProcessedOutput) {
        tio->c_oflag |= OPOST;
      }
      if (!(outmode & kNtDisableNewlineAutoReturn)) {
        tio->c_oflag |= OPOST | ONLCR;
      }
    }

    return 0;
  } else {
    return enotty();
  }
}