getCursor.c

//from stackoverflow
#include <stdio.h>
#include <termios.h>
#include <unistd.h>

int get_pos(int *y, int *x);

int main() {
    int x = 0, y = 0;
    get_pos(&y, &x);
    printf("x:%d, y:%d\n", x, y);
    return 0;
}

int get_pos(int *y, int *x) {
    char buf[30] = {0};
    int ret, i, pow;
    char ch;

    *y = 0; *x = 0;
    struct termios term, restore;

    tcgetattr(0, &term);
    tcgetattr(0, &restore);
    term.c_lflag &= ~(ICANON|ECHO);
    tcsetattr(0, TCSANOW, &term);

    write(1, "\033[6n", 4);

    for (i = 0, ch = 0; ch != 'R'; i++)
    {
        ret = read(0, &ch, 1);
        if (!ret) {
            tcsetattr(0, TCSANOW, &restore);
            fprintf(stderr, "getpos: error readin response!\n");
            return 1;
        }

        buf[i] = ch;
        //printf("buf[%d]: \t%c \t%d\n", i, ch, ch);
    }

    if (i < 2) {
        tcsetattr(0, TCSANOW, &restore);
        printf("i < 2\n");
        return(1);
    }

    for ( i -= 2, pow = 1; buf[i] != ';'; i--, pow *= 10) {
        *x = *x + (buf[i] - '0') * pow;
    }

    for ( i--, pow = 1; buf[i] != '['; i--, pow *= 10) {
        *y = *y + (buf[i] - '0') * pow;
    }

    tcsetattr(0, TCSANOW, &restore);
    return 0;
}

getCursorPos.go

package main

import (
    "fmt"
    "os"
    "golang.org/x/sys/unix"
    "syscall"
)

func main() {
    x, y := getCursorPos()
    fmt.Printf("x=%d, y=%d\n", x, y)
}

func getCursorPos() (int, int) {
    fd := os.Stdin.Fd()
    var request uint = unix.TCGETS 
    term, err := unix.IoctlGetTermios(int(fd), request)
    if err != nil {
        panic(err)
    }

    restore, err := unix.IoctlGetTermios(int(fd), request)
    if err != nil {
        panic(err)
    }

    term.Lflag &^= (syscall.ICANON | syscall.ECHO)
    err = unix.IoctlSetTermios(int(fd), unix.TCSETS, term)
    if err != nil {
        panic(err)
    }

    _, err = os.Stdout.Write([]byte("\033[6n"))
    if err != nil {
        panic(err)
    }

    var x, y int
    var zeroes int = 1
    var firstNumber bool = true
    b := make([]byte, 1)
    var a string
    for {
        _, err = os.Stdin.Read(b)
        if err != nil {
            panic(err)
        }
        a = a + string(b)
        if b[0] == 'R' {
            break
        }


        if b[0] == ';' {
            firstNumber = false
            zeroes = 1
        }

        if b[0] >= '0' && b[0] <= '9' {
            if firstNumber {
                x = x * zeroes + (int(b[0]) - int('0'))
            } else {
                y = y * zeroes + (int(b[0]) - int('0'))
            }
            zeroes *= 10
        }
    }

    err = unix.IoctlSetTermios(int(fd), unix.TCSETS, restore)
    if err != nil {
        panic(err)
    }

    return x, y
}