Function tty_display_file

win/tty/wintty.c:2424–2516

}

void
tty_display_file(
    const char *fname, /* name of file to display */
    boolean complain)  /* whether to report problem if file can't be opened */
{
#ifdef DEF_PAGER /* this implies that UNIX is defined */
    /* FIXME:  this won't work if fname is inside a dlb container */
    {
        /* use external pager; this may give security problems */
        int fd = open(fname, O_RDONLY);

        if (fd < 0) {
            if (complain)
                pline("Cannot open %s.", fname);
            else /* [is this refresh actually necessary?] */
                docrt();
            return;
        }
        if (child(1)) {
            /* Now that child() does a setuid(getuid()) and a chdir(),
               we may not be able to open file fname anymore, so make
               it stdin. */
            (void) close(0);
            if (dup(fd)) {
                if (complain)
                    raw_printf("Cannot open %s as stdin.", fname);
            } else {
                (void) execlp(gc.catmore, "page", (char *) 0);
                if (complain)
                    raw_printf("Cannot exec %s.", gc.catmore);
            }
            if (complain)
                sleep(10); /* want to wait_synch() but stdin is gone */
            nh_terminate(EXIT_FAILURE);
        }
        (void) close(fd);
    }
#else /* DEF_PAGER */
    {
        dlb *f;
        char buf[BUFSZ];
        char *cr;

        tty_clear_nhwindow(WIN_MESSAGE);
        f = dlb_fopen(fname, "r");
        if (!f) {
            if (complain) {
                home();
                tty_mark_synch();
                tty_raw_print("");
                perror(fname);
                tty_wait_synch(); /* "Hit <space> to continue: " */
                if (u.ux) /* if hero is on map, refresh the screen */
                    docrt();
                pline("Cannot open \"%s\".", fname);
            }
        } else {
            winid datawin = tty_create_nhwindow(NHW_TEXT);