mirror of
https://github.com/jart/cosmopolitan.git
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d6c2830850
This change removes our use of ENABLE_VIRTUAL_TERMINAL_INPUT (which isn't very good) in favor of having read() translate Windows Console input events to ANSI/XTERM sequences by hand. This makes it possible to capture important keystrokes (e.g. ctrl-space) that weren't possible before. Most importantly this change also removes the stdin/sigwinch worker threads, which never really worked that well. Interactive TTY sessions will now work reliably when a Cosmo process spawns or forks another Cosmo process, e.g. unbourne.com launching emacs.com.
136 lines
5.3 KiB
C
136 lines
5.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2023 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/struct/termios.h"
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#include "libc/calls/struct/termios.internal.h"
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#include "libc/calls/ttydefaults.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/describeflags.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/macros.internal.h"
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#include "libc/sysv/consts/termios.h"
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#define N 1024
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#define append(...) o += ksnprintf(buf + o, N - o, __VA_ARGS__)
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const char *(DescribeTermios)(char buf[N], ssize_t rc,
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const struct termios *tio) {
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int o = 0;
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char b128[128];
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if (!tio) return "NULL";
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if ((!IsAsan() && kisdangerous(tio)) ||
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(IsAsan() && !__asan_is_valid(tio, sizeof(*tio)))) {
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ksnprintf(buf, N, "%p", tio);
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return buf;
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}
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append("{");
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struct DescribeFlags kInput[] = {
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{IGNBRK, "IGNBRK"}, //
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{BRKINT, "BRKINT"}, //
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{IGNPAR, "IGNPAR"}, //
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{PARMRK, "PARMRK"}, //
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{INPCK, "INPCK"}, //
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{ISTRIP, "ISTRIP"}, //
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{INLCR, "INLCR"}, //
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{IGNCR, "IGNCR"}, //
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{ICRNL, "ICRNL"}, //
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{IUCLC, "IUCLC"}, //
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{IXON, "IXON"}, //
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{IXANY, "IXANY"}, //
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{IXOFF, "IXOFF"}, //
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{IMAXBEL, "IMAXBEL"}, //
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{IUTF8, "IUTF8"}, //
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};
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append(".c_iflag=%s",
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DescribeFlags(b128, 128, kInput, ARRAYLEN(kInput), "", tio->c_iflag));
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struct DescribeFlags kOutput[] = {
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{OPOST, "OPOST"}, //
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{OLCUC, "OLCUC"}, //
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{ONLCR, "ONLCR"}, //
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{OCRNL, "OCRNL"}, //
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{ONOCR, "ONOCR"}, //
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{ONLRET, "ONLRET"}, //
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{OFILL, "OFILL"}, //
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{OFDEL, "OFDEL"}, //
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{NL1, "NL1"}, //
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{CR3, "CR3"}, //
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{CR2, "CR2"}, //
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{CR1, "CR1"}, //
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{TAB3, "TAB3"}, //
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{TAB2, "TAB2"}, //
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{TAB1, "TAB1"}, //
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{BS1, "BS1"}, //
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{VT1, "VT1"}, //
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{FF1, "FF1"}, //
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};
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append(", .c_oflag=%s", DescribeFlags(b128, 128, kOutput, ARRAYLEN(kOutput),
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"", tio->c_oflag));
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struct DescribeFlags kControl[] = {
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{CS8, "CS8"}, //
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{CS7, "CS7"}, //
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{CS6, "CS6"}, //
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{CSTOPB, "CSTOPB"}, //
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{CREAD, "CREAD"}, //
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{PARENB, "PARENB"}, //
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{PARODD, "PARODD"}, //
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{HUPCL, "HUPCL"}, //
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{CLOCAL, "CLOCAL"}, //
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{CRTSCTS, "CRTSCTS"}, //
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};
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append(", .c_cflag=%s", DescribeFlags(b128, 128, kControl, ARRAYLEN(kControl),
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"", tio->c_cflag));
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struct DescribeFlags kLocal[] = {
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{ISIG, "ISIG"}, //
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{ICANON, "ICANON"}, //
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{XCASE, "XCASE"}, //
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{ECHO, "ECHO"}, //
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{ECHOE, "ECHOE"}, //
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{ECHOK, "ECHOK"}, //
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{ECHONL, "ECHONL"}, //
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{NOFLSH, "NOFLSH"}, //
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{TOSTOP, "TOSTOP"}, //
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{ECHOCTL, "ECHOCTL"}, //
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{ECHOPRT, "ECHOPRT"}, //
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{ECHOKE, "ECHOKE"}, //
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{FLUSHO, "FLUSHO"}, //
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{PENDIN, "PENDIN"}, //
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{IEXTEN, "IEXTEN"}, //
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{EXTPROC, "EXTPROC"}, //
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};
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append(", "
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".c_lflag=%s, "
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".c_cc[VMIN]=%d, "
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".c_cc[VTIME]=%d, "
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".c_cc[VINTR]=CTRL(%#c), "
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".c_cc[VQUIT]=CTRL(%#c)",
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DescribeFlags(b128, 128, kLocal, ARRAYLEN(kLocal), "", tio->c_lflag),
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tio->c_cc[VMIN], tio->c_cc[VTIME], CTRL(tio->c_cc[VINTR]),
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CTRL(tio->c_cc[VQUIT]));
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append("}");
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return buf;
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}
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