nxu/term.c

#include <pty.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

// compile with gcc term.c -lutil
int main(int argc, char **argv) {
    if (argc < 2) {
        printf("usage: %s ROM\n", argv[0]);
        return 1;
    }
    char *rom = argv[1]; // find term.rom
    int fdm = -1; // allocate file descriptor

    // allocate a pty, fork, inititialize file descriptor
    pid_t pid = forkpty(&fdm, NULL, NULL, NULL); 

    if (pid < 0) { // failure
        perror("fork failed");
        return 1;
    } else if (pid == 0) { // child
        setenv("TERM", "ansi", 1);
        execlp("bash", "bash", NULL); // exec bash 
        perror("exec bash failed");
    } else { // parent
        struct winsize ws = {23, 80, 8, 12}; // rows, cols, xps, ypx
        ioctl(fdm, TIOCSWINSZ, &ws); // set term window size
        dup2(fdm, 0); // use fdm for stdin
        dup2(fdm, 1); // use fdm for stdout
        execlp("uxnemu", "uxnemu", rom, NULL); // exec uxnemu
        perror("exec uxnemu failed");
    }
}