ng.c

早期freebsd实现

	case '+':
	    putchar('\n') FLUSH;
	    return AS_ASK;
	case 'Q':
	    exit_code = NG_ASK;
	    /* FALL THROUGH */
	case 'q':
	    break;
	case 'N':
	    exit_code = NG_SELNEXT;
	    break;
	case 'P':
	    exit_code = NG_SELPRIOR;
	    break;
	default:
	    if (toread[ng])
		return AS_NORM;
	    break;
	}
	return AS_CLEAN;
    case '=': {			/* list subjects */
	char tmpbuf[256];
	ART_NUM oldart = art;
	int cmd;
	char *s;
	char *subjline = getval("SUBJLINE",Nullch);
	ARTICLE *ap = article_ptr(firstart);

	page_init();
	for (i=firstart; i<=lastart && !int_count; i++, ap++) {
	    if (!(ap->flags & AF_READ) && (s = fetchsubj(i,FALSE)) != Nullch) {
		sprintf(tmpbuf,"%5ld ", i);
		if (subjline) {
		    art = i;
		    interp(tmpbuf + 6, (sizeof tmpbuf) - 6, subjline);
		}
		else
		    safecpy(tmpbuf + 6, s, (sizeof tmpbuf) - 6);
		if (cmd = print_lines(tmpbuf,NOMARKING)) {
		    if (cmd > 0)
			pushchar(cmd);
		    break;
		}
	    }
	}
	int_count = 0;
	art = oldart;
	return AS_ASK;
    }
    case '^':
	top_article();
#ifdef ARTSEARCH
	srchahead = 0;
#endif
	return AS_NORM;
#ifdef DEBUG
    case 'D':
	printf("\nFirst article: %ld\n",(long)firstart) FLUSH;
	{
	    ARTICLE *ap = article_ptr(firstart);
	    for (i = firstart; i <= lastart && !int_count; i++, ap++) {
		if (ap->subj)
		    printf("%5ld %c %s\n",i,(was_read(i)?'y':'n'),
			   ap->subj->str) FLUSH;
	    }
	}
	int_count = 0;
	return AS_ASK;
#endif
    case 'v':
	if (art <= lastart) {
	    reread = TRUE;
	    do_hiding = FALSE;
	}
	return AS_NORM;
#ifdef ROTATION
    case Ctl('x'):
#endif
    case Ctl('r'):
#ifdef ROTATION
	rotate = (*buf==Ctl('x'));
#endif
	if (art <= lastart)
	    reread = TRUE;
	else
	    forcelast = TRUE;
	return AS_NORM;
#ifdef ROTATION
    case 'X':
	rotate = !rotate;
	/* FALL THROUGH */
#else
    case Ctl('x'):
    case 'x':
    case 'X':
	notincl("x");
	return AS_ASK;
#endif
    case 'l': case Ctl('l'):		/* refresh screen */
	if (art <= lastart) {
	    reread = TRUE;
	    clear();
	    do_fseek = TRUE;
	    artline = topline;
	    if (artline < 0)
		artline = 0;
	}
	return AS_NORM;
    case Ctl('f'):
	carriage_return();
	erase_eol();		/* erase the prompt */
#ifdef MAILCALL
	setmail(TRUE);		/* force a mail check */
#endif
	return AS_ASK;
    case 'b': case Ctl('b'):		/* back up a page */
	if (art <= lastart) {
	    ART_LINE target;

	    reread = TRUE;
	    clear();
	    do_fseek = TRUE;
	    target = topline - (LINES - 2);
	    artline = topline;
	    if (artline >= 0) do {
		artline--;
	    } while(artline >= 0 && artline > target && vrdary(artline-1) >= 0);
	    topline = artline;
	    if (artline < 0)
		artline = 0;
	}
	return AS_NORM;
    case '!':			/* shell escape */
	if (escapade())
	    return AS_INP;
	return AS_ASK;
    case 'C': {
	cancel_article();
	return AS_ASK;
    }
    case 'Z':
    case 'z': {
	supersede_article();	/* supersedes */
	return AS_ASK;
    }
    case 'R':
    case 'r': {			/* reply? */
	reply();
	return AS_ASK;
    }
    case 'F':
    case 'f': {			/* followup command */
	followup();
	forcegrow = TRUE;		/* recalculate lastart */
	return AS_ASK;
    }
    case '|':
    case 'w': case 'W':
    case 's': case 'S':		/* save command */
    case 'e':			/* extract command */
	if (save_article() == SAVE_ABORT)
	    return AS_INP;
	int_count = 0;
	return AS_ASK;
    case 'E':
	if (decode_fp)
	    decode_end();
	else
	    putchar('\n') FLUSH;
	return AS_ASK;
    case 'Y':				/* yank back M articles */
	yankback();
	top_article();			/* from the beginning */
	return AS_NORM;			/* pretend nothing happened */
#ifdef STRICTCR
    case '\n':
	fputs(badcr,stdout) FLUSH;
	return AS_ASK;
#endif
    case '_':
	if (!finish_dblchar())
	    return AS_INP;
	switch (buf[1] & 0177) {
	case 'P':
	    art--;
	    goto check_dec_art;
	case 'N':
	    if (art > lastart)
		art = absfirst;
	    else
		art++;
	    if (art <= lastart)
		reread = TRUE;
#ifdef ARTSEARCH
	    srchahead = 0;
#endif
	    return AS_NORM;
	case '+':
	    if (ThreadedGroup) {
		select_thread(artp->subj->thread, 0);
		printf("\nSelected all articles in this thread.\n");
	    } else {
		select_subject(artp->subj, 0);
		printf("\nSelected all articles in this subject.\n");
	    }
	    return AS_ASK;
	case '-':
	    if (sel_mode == SM_THREAD) {
		deselect_thread(artp->subj->thread);
		printf("\nDeselected all articles in this thread.\n");
	    } else {
		deselect_subject(artp->subj);
		printf("\nDeselected all articles in this subject.\n");
	    }
	    return AS_ASK;
	case 'a':  case 's':  case 't':  case 'T':
	    *buf = buf[1];
	    goto run_the_selector;
	}
	/* FALL THROUGH */
    default:
	printf("\n%s",hforhelp) FLUSH;
	settle_down();
	break;
    }
    return AS_ASK;
}

#ifdef MAILCALL
/* see if there is any mail */

void
setmail(force)
bool_int force;
{
    if (force)
	mailcount = 0;
    if (!(mailcount++)) {
	char *mailfile = filexp(getval("MAILFILE",MAILFILE));
	
	if (stat(mailfile,&filestat) < 0 || !filestat.st_size
	    || filestat.st_atime > filestat.st_mtime)
	    mailcall = nullstr;
	else
	    mailcall = getval("MAILCALL","(Mail) ");
    }
    mailcount %= 10;			/* check every 10 articles */
}
#endif

void
setdfltcmd()
{
    if (!toread[ng]) {
	if (art > lastart)
	    dfltcmd = "qnp";
	else
	    dfltcmd = "npq";
    }
    else {
#ifdef ARTSEARCH
	if (srchahead)
	    dfltcmd = "^Nnpq";
	else
#endif
	    dfltcmd = "npq";
    }
}

/* Ask the user about catching-up the current group.  Returns 'y' if yes,
** 'n' or 'N' if no ('N' means we used one line when in the selector),
** or 'u' for yes with unsubscribe.  Actually performs the catchup and
** unsubscription as needed.
*/
char
ask_catchup()
{
    char ch;
    bool use_one_line = (mode == 't');

    if (!use_one_line)
	putchar('\n') FLUSH;
reask_catchup:
#ifdef VERBOSE
    IF(verbose)
	in_char("Do you really want to mark everything as read? [yn] ", 'C');
    ELSE
#endif
#ifdef TERSE
	in_char("Really? [ynh] ", 'C');
#endif
    setdef(buf,"y");
#ifdef VERIFY
    printcmd();
#endif
    if ((ch = *buf) == 'h') {
	use_one_line = FALSE;
#ifdef VERBOSE
	IF(verbose)
	    fputs("\n\
Type y or SP to mark all articles as read.\n\
Type n to leave articles marked as they are.\n\
Type u to mark everything read and unsubscribe.\n\n\
",stdout) FLUSH;
	ELSE
#endif
#ifdef TERSE
	    fputs("\n\
y or SP to mark all read.\n\
n to forget it.\n\
u to mark all and unsubscribe.\n\n\
",stdout) FLUSH;
#endif
	goto reask_catchup;
    }
    if (ch == 'n' || ch == 'q') {
	if (use_one_line)
	    return 'N';
	putchar('\n') FLUSH;
	return 'n';
    }
    if (ch != 'y' && ch != 'u') {
	use_one_line = FALSE;
	printf("\n%s\n", hforhelp) FLUSH;
	settle_down();
	goto reask_catchup;
    }
    if (mode == 'n') {
	putchar('\n') FLUSH;
	catch_up(ng);
    }
    else {
	int i;
	ARTICLE *ap;
	for (i = firstart, ap = article_ptr(i); i <= lastart; i++, ap++)
	    ap->flags = ((ap->flags & ~sel_mask) | AF_READ);
	selected_count = selected_subj_cnt = selected_only = 0;
	toread[ng] = 0;
	if (dmcount)
	    yankback();
	putchar('\n') FLUSH;
    }
    if (ch == 'u')
	rcchar[ng] = NEGCHAR;
    return ch;
}

char
ask_memorize(ch)
char_int ch;
{
    bool thread_cmd = (ch == 'T');
    bool use_one_line = (mode == 't');
    char *mode_string = (thread_cmd? "thread" : "subject");
    char *mode_phrase = (thread_cmd? "replies to this article" :
				     "this subject and all replies");
    ART_NUM art_hold = art;
    ARTICLE *artp_hold = artp;

    if (!use_one_line)
	putchar('\n') FLUSH;
    sprintf(cmd_buf,"Memorize %s command: [+.j,cC]", mode_string);
reask_memorize:
    in_char(cmd_buf, 'm');
    setdef(buf,"+");
#ifdef VERIFY
    printcmd();
#endif
    if ((ch = *buf) == 'h') {
	use_one_line = FALSE;
#ifdef VERBOSE
	IF(verbose)
	    printf("\n\
Type + or SP to auto-select this %s (i.e. includes future articles).\n\
Type . to auto-select %s.\n\
Type j to auto-kill (junk) this %s.\n\
Type , to auto-kill %s.\n\
Type c to clear all selection/killing on this %s.\n\
Type C to clear all selection/killing on %s.\n\
Type q to abort the operation.\n\n\
",mode_string,mode_phrase,mode_string,mode_phrase,mode_string,mode_phrase) FLUSH;
	ELSE
#endif
#ifdef TERSE
	    printf("\n\
+ or SP auto-selects this %s.\n\
. auto-selects %s.\n\
j auto-kills this %s.\n\
, auto-kills %s.\n\
c clears auto-commands for this %s.\n\
C clears auto-commands for %s.\n\
q aborts.\n\n\
",mode_string,mode_phrase,mode_string,mode_phrase,mode_string,mode_phrase) FLUSH;
#endif
	goto reask_memorize;
    }
    if (ch == 'q') {
	if (use_one_line)
	    return 'Q';
	putchar('\n');
	return 'q';
    }
    if (ch == '+') {
	if (!thread_cmd) {
	    (void)art_search(buf, (sizeof buf), TRUE);
	    art = art_hold;
	    artp = artp_hold;
	    ch = '.';
	} else
	    ch = (use_one_line? '+' : '.');
	if (thread_cmd)
	    select_thread(artp->subj->thread, AF_AUTOSELECTALL);
	else
	    select_subject(artp->subj, 0);
	if (mode != 't')
	    printf("\nSelection memorized.\n");
    } else if (ch == '.') {
	if (!thread_cmd) {
	    (void)art_search(buf, (sizeof buf), TRUE);
	    art = art_hold;
	    artp = artp_hold;
	} else
	    ch = (use_one_line? '+' : '.');
	select_subthread(artp,thread_cmd? AF_AUTOSELECT : 0);
	if (mode != 't')
	    printf("\nSelection memorized.\n");
    } else if (ch == 'j') {
	if (!thread_cmd) {
	    *buf = 'K';
	    (void)art_search(buf, (sizeof buf), TRUE);
	    art = art_hold;
	    artp = artp_hold;
	}
	if (thread_cmd)
	    kill_thread(artp->subj->thread,KF_ALL|KF_KILLFILE);
	else
	    kill_subject(artp->subj,KF_ALL);
	if (mode != 't')
	    printf("\nKill memorized.\n");
    } else if (ch == ',') {
	if (!thread_cmd) {
	    (void)art_search(buf, (sizeof buf), TRUE);
	    art = art_hold;
	    artp = artp_hold;
	}
	kill_subthread(artp,KF_ALL|(thread_cmd?KF_KILLFILE:0));
	if (mode != 't')
	    printf("\nKill memorized.\n");
    } else if (ch == 'c') {
	if (thread_cmd)
	    clear_thread(artp->subj->thread);
	else
	    clear_subject(artp->subj);
    } else if (ch == 'C') {
	clear_subthread(artp);
    } else {
	use_one_line = FALSE;
	printf("\n%s\n", hforhelp) FLUSH;
	settle_down();
	goto reask_memorize;
    }
    if (!use_one_line)
	putchar('\n') FLUSH;
    return ch;
}