[src/trunk]: src/lib/libcurses Fix _cursesi_addwchar so that it performs line...

[blymn <blymn%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/01dd627edfdd
branches:  trunk
changeset: 456524:01dd627edfdd
user:      blymn <blymn%NetBSD.org@localhost>
date:      Sun May 12 02:29:00 2019 +0000

description:
Fix _cursesi_addwchar so that it performs line wrap. SUSv2 says
add_wch line wraps and updates position.  Since wrap is done we are
not past EOL.

diffstat:

 lib/libcurses/addbytes.c |  27 ++++++++++++++++++++++-----
 1 files changed, 22 insertions(+), 5 deletions(-)

diffs (66 lines):

diff -r 515dbaf1850d -r 01dd627edfdd lib/libcurses/addbytes.c
--- a/lib/libcurses/addbytes.c  Sun May 12 02:19:23 2019 +0000
+++ b/lib/libcurses/addbytes.c  Sun May 12 02:29:00 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: addbytes.c,v 1.49 2018/11/15 03:17:51 uwe Exp $        */
+/*     $NetBSD: addbytes.c,v 1.50 2019/05/12 02:29:00 blymn Exp $      */
 
 /*
  * Copyright (c) 1987, 1993, 1994
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)addbytes.c 8.4 (Berkeley) 5/4/94";
 #else
-__RCSID("$NetBSD: addbytes.c,v 1.49 2018/11/15 03:17:51 uwe Exp $");
+__RCSID("$NetBSD: addbytes.c,v 1.50 2019/05/12 02:29:00 blymn Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -564,6 +564,7 @@
            lp->nsp);
        __CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: add rest columns (%d:%d)\n",
                sx + 1, sx + cw - 1);
+       __CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: *x = %d, win->maxx = %d\n", *x, win->maxx);
 #endif /* DEBUG */
        for (tp = lp + 1, *x = sx + 1; *x - sx <= cw - 1; tp++, (*x)++) {
                if (tp->nsp) {
@@ -577,12 +578,27 @@
        }
 
        if (*x == win->maxx) {
-               (*lnp)->flags |= __ISPASTEOL;
+#ifdef DEBUG
+       __CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: do line wrap\n");
+#endif /* DEBUG */
                newx = win->maxx - 1 + win->ch_off;
                if (newx > *(*lnp)->lastchp)
                        *(*lnp)->lastchp = newx;
                __touchline(win, *y, sx, (int) win->maxx - 1);
-               *x = win->curx = sx;
+               *x = sx = 0;
+               if (*y == win->scr_b) {
+                       if (!(win->flags & __SCROLLOK))
+                               return ERR;
+                       PSYNCH_OUT;
+                       scroll(win);
+                       PSYNCH_IN;
+               } else {
+                       (*y)++;
+               }
+               lp = &win->alines[*y]->line[0];
+               (*lnp) = win->alines[*y];
+               win->curx = *x;
+               win->cury = *y;
        } else {
                win->curx = *x;
 
@@ -612,7 +628,8 @@
        }
 
 #ifdef DEBUG
-       __CTRACE(__CTRACE_INPUT, "add_wch: %d : 0x%x\n", lp->ch, lp->attr);
+       __CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: %d : 0x%x\n", lp->ch, lp->attr);
+       __CTRACE(__CTRACE_INPUT, "_cursesi_addwchar: *x = %d, *y = %d, win->maxx = %d\n", *x, *y, win->maxx);
 #endif /* DEBUG */
        __sync(win);
        return OK;