userspace/xterm/xterm.c


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extern char**environ;

int main(int argc, char **argv)
{
    _gui_win();

    int xterm_in[2];
    int xterm_out[2];

    _pipe(xterm_in);
    _pipe(xterm_out);

    vesa_init();
    void *tty=terminal_init_vesa();

    int pid=_fork();

    if(!pid)
    {
            _close(xterm_in[1]);
            _close(xterm_out[0]);

            _dup2(xterm_in[0],0);// stdin
            _dup2(xterm_out[1],1);// stdout
            _dup2(xterm_out[1],2);// stderr

            _close(xterm_in[0]);
            _close(xterm_out[1]);

            _execve(argv[1],argv,environ); // replace process with our foolshell or whatever
    }

    _close(xterm_in[0]);
    _close(xterm_out[1]);

    _dup2(xterm_in[1],0); // compositor writes here.
    _close(xterm_in[1]);

    while(1)
    {
        char buf[1];

        _read(xterm_out[0],buf,1); // show what foolshell writes to its stdout/stderr

        terminal_put(tty,buf[0]);
        _gui_rect(); 
    }
}