mirror of
https://github.com/jart/cosmopolitan.git
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109 lines
3.4 KiB
C
109 lines
3.4 KiB
C
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#if 0
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/*─────────────────────────────────────────────────────────────────╗
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│ To the extent possible under law, Justine Tunney has waived │
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│ all copyright and related or neighboring rights to this file, │
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│ as it is written in the following disclaimers: │
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│ • http://unlicense.org/ │
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│ • http://creativecommons.org/publicdomain/zero/1.0/ │
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╚─────────────────────────────────────────────────────────────────*/
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#endif
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#include "dsp/tty/tty.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/ioctl.h"
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#include "libc/calls/struct/sigaction.h"
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#include "libc/calls/termios.h"
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#include "libc/errno.h"
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#include "libc/fmt/fmt.h"
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#include "libc/log/check.h"
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#include "libc/log/log.h"
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#include "libc/runtime/gc.h"
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#include "libc/runtime/runtime.h"
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#include "libc/stdio/stdio.h"
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#include "libc/str/str.h"
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#include "libc/sysv/consts/exit.h"
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#include "libc/sysv/consts/fileno.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/consts/sig.h"
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#include "libc/sysv/consts/termios.h"
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#include "libc/x/x.h"
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/*
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"\e[c" → "\e[?1;2c"
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"\e[x" → "\e[2;1;1;112;112;1;0x"
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"\e[>c" → "\e[>83;40500;0c"
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"\e[6n" → "\e[52;1R"
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*/
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#define CTRL(C) ((C) ^ 0b01000000)
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#define PROBE_VT100 "\e[c" /* e.g. "\e[?1;2c", "\e[>0c" */
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#define PROBE_SECONDARY "\e[>c" /* "\e[>83;40500;0c" (Screen v4.05.00) */
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#define PROBE_PARAMETERS "\e[x" /* e.g. "\e[2;1;1;112;112;1;0x" */
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#define PROBE_CURSOR_POSITION "\e[6n" /* e.g. "\e[𝑦;𝑥R" */
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#define PROBE_SUN_DTTERM_SIZE "\e[14t" /* e.g. "\e[𝑦;𝑥R" */
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int fd_;
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jmp_buf jb_;
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ssize_t got_;
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uint8_t buf_[128];
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struct TtyIdent ti_;
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struct winsize wsize_;
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volatile bool resized_;
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void OnResize(void) {
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resized_ = true;
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}
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void OnKilled(int sig) {
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longjmp(jb_, 128 + sig + 1);
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}
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void getsome(void) {
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if ((got_ = read(fd_, buf_, sizeof(buf_))) == -1 && errno != EINTR) {
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printf("%s%s\r\n", "error: ", strerror(errno));
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longjmp(jb_, EXIT_FAILURE + 1);
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}
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if (got_ >= 0) {
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printf("%`'.*s\r\n", got_, buf_);
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if (got_ > 0 && buf_[0] == CTRL('C')) {
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longjmp(jb_, EXIT_SUCCESS + 1);
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}
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}
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if (resized_) {
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CHECK_NE(-1, getttysize(fd_, &wsize_));
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printf("SIGWINCH → %hu×%hu\r\n", wsize_.ws_row, wsize_.ws_col);
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resized_ = false;
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}
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}
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void probe(const char *s) {
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printf("%`'s → ", s);
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write(fd_, s, strlen(s));
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getsome();
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}
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int main(int argc, char *argv[]) {
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int rc;
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char ttyname[64];
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struct termios old;
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CHECK_NE(-1, (fd_ = open("/dev/tty", O_RDWR)));
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CHECK_NE(-1, ttyconfig(fd_, ttysetrawmode, 0, &old));
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if (!(rc = setjmp(jb_))) {
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xsigaction(SIGTERM, OnKilled, 0, 0, NULL);
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xsigaction(SIGWINCH, OnResize, 0, 0, NULL);
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if (ttyident(&ti_, STDIN_FILENO, STDOUT_FILENO) != -1) {
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ttysendtitle(fd_, "justine was here", &ti_);
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fputs(ttydescribe(ttyname, sizeof(ttyname), &ti_), stdout);
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}
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fputs("\r\n", stdout);
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probe(PROBE_VT100);
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probe(PROBE_SECONDARY);
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probe(PROBE_PARAMETERS);
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probe(PROBE_CURSOR_POSITION);
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/* probe(PROBE_SUN_DTTERM_SIZE); */
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getsome();
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for (;;) getsome();
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}
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ttyrestore(fd_, &old);
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ttyidentclear(&ti_);
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return rc - 1;
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}
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