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/*
* msgs.c
*
* Support functions for "popup-msgs" mode.
* Written by T.E.Dickey for vile (august 1994).
*
* $Header: /usr/build/vile/vile/RCS/msgs.c,v 1.26 2004/12/06 01:13:12 tom Exp $
*/
#include "estruct.h"
#if OPT_POPUP_MSGS
#include "edef.h"
/*
* Create the message-buffer if it doesn't already exist
*/
static BUFFER *
create_msgs(void)
{
BUFFER *bp = bfind(MESSAGES_BufName, BFINVS);
if (valid_buffer(bp)) {
b_set_invisible(bp);
bp->b_active = TRUE;
}
return bp;
}
/*
* This is invoked as a wrapper for 'kbd_putc()'. It writes to the Messages
* scratch buffer, and also to the message line. If the Messages buffer isn't
* visible, it is automatically popped up when a new message line is begun.
* Since it's a scratch buffer, popping it down destroys it.
*/
void
msg_putc(int c)
{
BUFFER *savebp = curbp;
WINDOW *savewp = curwp;
MARK savemk;
int saverow = ttrow;
int savecol = ttcol;
register BUFFER *bp;
register WINDOW *wp;
if ((bp = create_msgs()) == 0)
return;
savemk = DOT;
beginDisplay();
/*
* Modify the current-buffer state as unobtrusively as possible (i.e.,
* don't modify the buffer order, and don't make the buffer visible if
* it isn't already!). To use the 'bputc()' logic, though, we've got
* to have a window, even if it's not real.
*/
curbp = bp;
if ((wp = bp2any_wp(bp)) == NULL) {
static WINDOW dummy;
wp = &dummy;
wp->w_bufp = bp;
}
curwp = wp;
DOT.l = lback(buf_head(bp));
DOT.o = llength(DOT.l);
/*
* Write into the [Messages]-buffer
*/
#if OPT_TRACE
if (c == '\n') {
static TBUFF *ss;
int len = (DOT.o > 0) ? DOT.o : 1;
if (tb_init(&ss, EOS) != 0
&& tb_bappend(&ss,
(DOT.o > 0) ? DOT.l->l_text : "?",
(size_t) len) != 0
&& tb_append(&ss, EOS) != 0) {
TRACE(("msg:%s\n",
visible_buff(tb_values(ss),
tb_length(ss) - 1, TRUE)));
}
}
#endif
if ((c != '\n') || (DOT.o > 0)) {
bputc(c);
b_clr_changed(bp);
}
/* Finally, restore the original current-buffer and write the character
* to the message line.
*/
curbp = savebp;
curwp = savewp;
if (savewp)
DOT = savemk;
movecursor(saverow, savecol);
if (c != '\n') {
if (sgarbf) {
mlsavec(c);
} else {
kbd_putc(c);
}
}
endofDisplay();
}
void
popup_msgs(void)
{
BUFFER *savebp = curbp;
WINDOW *savewp = curwp;
MARK savemk;
register BUFFER *bp;
WINDOW *wp;
if ((bp = create_msgs()) == 0)
return;
savemk = DOT;
if (!is_empty_buf(bp)) {
if ((curwp == 0) || sgarbf || global_g_val(GMDPOPUP_MSGS) == -TRUE) {
return; /* CAN'T popup yet */
}
if (popupbuff(bp) == FALSE) {
(void) zotbuf(bp);
return;
}
if ((wp = bp2any_wp(bp)) != NULL) {
make_local_w_val(wp, WMDNUMBER);
set_w_val(wp, WMDNUMBER, FALSE);
}
set_rdonly(bp, non_filename(), MDVIEW);
curbp = savebp;
curwp = savewp;
if (savewp)
DOT = savemk;
}
}
/*
* If no warning messages were encountered during startup, and the popup-msgs
* mode wasn't enabled, discard the informational messages that are there
* already.
*/
void
purge_msgs(void)
{
TRACE(("purge_msgs mode:%d, warnings:%d\n",
global_g_val(GMDPOPUP_MSGS), warnings));
if ((global_g_val(GMDPOPUP_MSGS) == -TRUE)
&& (warnings == 0)) {
BUFFER *bp = find_b_name(MESSAGES_BufName);
if (valid_buffer(bp)
&& bp->b_nwnd == 0) {
(void) zotbuf(bp);
}
set_global_g_val(GMDPOPUP_MSGS, FALSE);
}
}
#endif
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