This is a maintenance fork
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 
 

163 lines
4.6 KiB

#if 0
/*─────────────────────────────────────────────────────────────────╗
│ To the extent possible under law, Justine Tunney has waived │
│ all copyright and related or neighboring rights to this file, │
│ as it is written in the following disclaimers: │
│ • http://unlicense.org/ │
│ • http://creativecommons.org/publicdomain/zero/1.0/ │
╚─────────────────────────────────────────────────────────────────*/
#endif
#include "dsp/tty/tty.h"
#include "libc/calls/calls.h"
#include "libc/calls/ioctl.h"
#include "libc/calls/struct/sigaction.h"
#include "libc/calls/termios.h"
#include "libc/errno.h"
#include "libc/fmt/fmt.h"
#include "libc/log/check.h"
#include "libc/log/log.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/exit.h"
#include "libc/sysv/consts/fileno.h"
#include "libc/sysv/consts/o.h"
#include "libc/sysv/consts/sig.h"
#include "libc/sysv/consts/termios.h"
#include "libc/x/x.h"
#define CTRL(C) ((C) ^ 0b01000000)
#define ENABLE_MOUSE_TRACKING "\e[?1000;1002;1015;1006h"
#define DISABLE_MOUSE_TRACKING "\e[?1000;1002;1015;1006l"
#define PROBE_DISPLAY_SIZE "\e7\e[9979;9979H\e[6n\e8"
char code[512];
struct winsize wsize;
struct termios oldterm;
volatile bool resized, killed;
void onresize(void) {
resized = true;
}
void onkilled(int sig) {
killed = true;
}
void restoretty(void) {
write(1, DISABLE_MOUSE_TRACKING, strlen(DISABLE_MOUSE_TRACKING));
ioctl(1, TCSETS, &oldterm);
}
int rawmode(void) {
static bool once;
struct termios t;
if (!once) {
if (ioctl(1, TCGETS, &oldterm) != -1) {
atexit(restoretty);
} else {
return -1;
}
once = true;
}
memcpy(&t, &oldterm, sizeof(t));
t.c_cc[VMIN] = 1;
t.c_cc[VTIME] = 1;
t.c_iflag &= ~(INPCK | ISTRIP | PARMRK | INLCR | IGNCR | ICRNL | IXON |
IGNBRK | BRKINT);
t.c_lflag &= ~(IEXTEN | ICANON | ECHO | ECHONL | ISIG);
t.c_cflag &= ~(CSIZE | PARENB);
t.c_oflag &= ~OPOST;
t.c_cflag |= CS8;
t.c_iflag |= IUTF8;
ioctl(1, TCSETS, &t);
write(1, ENABLE_MOUSE_TRACKING, strlen(ENABLE_MOUSE_TRACKING));
write(1, PROBE_DISPLAY_SIZE, strlen(PROBE_DISPLAY_SIZE));
return 0;
}
void getsize(void) {
if (getttysize(1, &wsize) != -1) {
printf("termios says terminal size is %hu×%hu\r\n", wsize.ws_col,
wsize.ws_row);
} else {
printf("%s\n", strerror(errno));
}
}
const char *describemouseevent(int e) {
static char buf[64];
buf[0] = 0;
if (e & 0x10) {
strcat(buf, " ctrl");
}
if (e & 0x40) {
strcat(buf, " wheel");
if (e & 0x01) {
strcat(buf, " down");
} else {
strcat(buf, " up");
}
} else {
switch (e & 3) {
case 0:
strcat(buf, " left");
break;
case 1:
strcat(buf, " middle");
break;
case 2:
strcat(buf, " right");
break;
default:
unreachable;
}
if (e & 0x20) {
strcat(buf, " drag");
} else if (e & 0x04) {
strcat(buf, " up");
} else {
strcat(buf, " down");
}
}
return buf + 1;
}
int main(int argc, char *argv[]) {
int e, c, y, x, n, yn, xn;
xsigaction(SIGTERM, onkilled, 0, 0, NULL);
xsigaction(SIGWINCH, onresize, 0, 0, NULL);
xsigaction(SIGCONT, onresize, 0, 0, NULL);
rawmode();
getsize();
while (!killed) {
if (resized) {
printf("SIGWINCH ");
getsize();
resized = false;
}
if ((n = readansi(0, code, sizeof(code))) == -1) {
if (errno == EINTR) continue;
printf("ERROR: READ: %s\r\n", strerror(errno));
exit(1);
}
printf("%`'.*s ", n, code);
if (iscntrl(code[0]) && !code[1]) {
printf("is CTRL-%c a.k.a. ^%c\r\n", CTRL(code[0]), CTRL(code[0]));
if (code[0] == CTRL('C') || code[0] == CTRL('D')) break;
} else if (startswith(code, "\e[") && endswith(code, "R")) {
yn = 1, xn = 1;
sscanf(code, "\e[%d;%dR", &yn, &xn);
printf("inband signalling says terminal size is %d×%d\r\n", xn, yn);
} else if (startswith(code, "\e[<") &&
(endswith(code, "m") || endswith(code, "M"))) {
e = 0, y = 1, x = 1;
sscanf(code, "\e[<%d;%d;%d%c", &e, &y, &x, &c);
printf("mouse %s at %d×%d\r\n", describemouseevent(e | (c == 'm') << 2),
x, y);
} else {
printf("\r\n");
}
}
return 0;
}