[src/trunk]: src/lib/libcurses curses: wrap the erase logic in a macro

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

details:   https://anonhg.NetBSD.org/src/rev/f0ad85a4fd79
branches:  trunk
changeset: 745804:f0ad85a4fd79
user:      roy <roy%NetBSD.org@localhost>
date:      Fri Mar 13 02:57:26 2020 +0000

description:
curses: wrap the erase logic in a macro

Easier to use, it's in one place and now hopefully everyone is happy.

X

diffstat:

 lib/libcurses/clrtobot.c       |  12 +++++-------
 lib/libcurses/clrtoeol.c       |  13 +++++--------
 lib/libcurses/curses.h         |   6 ++----
 lib/libcurses/curses_private.h |  14 +++++++++++++-
 lib/libcurses/erase.c          |  12 ++++--------
 5 files changed, 29 insertions(+), 28 deletions(-)

diffs (173 lines):

diff -r 4426d11fcca9 -r f0ad85a4fd79 lib/libcurses/clrtobot.c
--- a/lib/libcurses/clrtobot.c  Fri Mar 13 02:43:31 2020 +0000
+++ b/lib/libcurses/clrtobot.c  Fri Mar 13 02:57:26 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: clrtobot.c,v 1.25 2020/03/12 12:17:15 roy Exp $        */
+/*     $NetBSD: clrtobot.c,v 1.26 2020/03/13 02:57:26 roy Exp $        */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)clrtobot.c 8.2 (Berkeley) 5/4/94";
 #else
-__RCSID("$NetBSD: clrtobot.c,v 1.25 2020/03/12 12:17:15 roy Exp $");
+__RCSID("$NetBSD: clrtobot.c,v 1.26 2020/03/13 02:57:26 roy Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -87,15 +87,12 @@
                attr = win->battr & __ATTRIBUTES;
        else
                attr = 0;
+
        for (y = starty; y < win->maxy; y++) {
                minx = -1;
                end = &win->alines[y]->line[win->maxx];
                for (sp = &win->alines[y]->line[startx]; sp < end; sp++) {
-                       if (sp->ch == bch &&
-#ifdef HAVE_WCHAR
-                           sp->nsp == NULL && WCOL(*sp) >= 0 &&
-#endif
-                           (sp->attr & WA_ATTRIBUTES) == attr)
+                       if (!(__NEED_ERASE(sp, bch, attr)))
                                continue;
 
                        maxx = sp;
@@ -115,6 +112,7 @@
                                    (int)(maxx - win->alines[y]->line));
                startx = 0;
        }
+
        __sync(win);
        return OK;
 }
diff -r 4426d11fcca9 -r f0ad85a4fd79 lib/libcurses/clrtoeol.c
--- a/lib/libcurses/clrtoeol.c  Fri Mar 13 02:43:31 2020 +0000
+++ b/lib/libcurses/clrtoeol.c  Fri Mar 13 02:57:26 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: clrtoeol.c,v 1.29 2020/03/12 12:17:15 roy Exp $        */
+/*     $NetBSD: clrtoeol.c,v 1.30 2020/03/13 02:57:26 roy Exp $        */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)clrtoeol.c 8.2 (Berkeley) 5/4/94";
 #else
-__RCSID("$NetBSD: clrtoeol.c,v 1.29 2020/03/12 12:17:15 roy Exp $");
+__RCSID("$NetBSD: clrtoeol.c,v 1.30 2020/03/13 02:57:26 roy Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -92,14 +92,10 @@
                attr = win->battr & __ATTRIBUTES;
        else
                attr = 0;
+
        for (sp = maxx; sp < end; sp++) {
-               if (sp->ch == bch &&
-#ifdef HAVE_WCHAR
-                   sp->nsp == NULL && WCOL(*sp) >= 0 &&
-#endif
-                   (sp->attr & WA_ATTRIBUTES) == attr)
+               if (!(__NEED_ERASE(sp, bch, attr)))
                        continue;
-
                maxx = sp;
                if (minx == -1)
                        minx = (int)(sp - win->alines[y]->line);
@@ -111,6 +107,7 @@
                SET_WCOL(*sp, 1);
 #endif
        }
+
 #ifdef DEBUG
        __CTRACE(__CTRACE_ERASE, "CLRTOEOL: y = %d, minx = %d, maxx = %d, "
            "firstch = %d, lastch = %d\n",
diff -r 4426d11fcca9 -r f0ad85a4fd79 lib/libcurses/curses.h
--- a/lib/libcurses/curses.h    Fri Mar 13 02:43:31 2020 +0000
+++ b/lib/libcurses/curses.h    Fri Mar 13 02:57:26 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: curses.h,v 1.127 2020/03/12 12:17:15 roy Exp $ */
+/*     $NetBSD: curses.h,v 1.128 2020/03/13 02:57:26 roy Exp $ */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -275,9 +275,7 @@
 #define WA_VERTICAL    0x00000010      /* Vertical highlight */
 #define WA_LEFT                0x00000020      /* Left highlight */
 #define WA_RIGHT       0x00000040      /* Right highlight */
-#else /* HAVE_WCHAR */
-#define WA_ATTRIBUTES  0               /* Just to make our code easier */
-#endif /* !HAVE_WCHAR */
+#endif /* HAVE_WCHAR */
 
 /*
  * Alternate character set definitions
diff -r 4426d11fcca9 -r f0ad85a4fd79 lib/libcurses/curses_private.h
--- a/lib/libcurses/curses_private.h    Fri Mar 13 02:43:31 2020 +0000
+++ b/lib/libcurses/curses_private.h    Fri Mar 13 02:57:26 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: curses_private.h,v 1.71 2019/06/09 07:40:14 blymn Exp $        */
+/*     $NetBSD: curses_private.h,v 1.72 2020/03/13 02:57:26 roy Exp $  */
 
 /*-
  * Copyright (c) 1998-2000 Brett Lymn
@@ -337,6 +337,18 @@
 void    __CTRACE(int, const char *, ...) __attribute__((__format__(__printf__, 2, 3)));
 #endif
 
+/* Common erase logic */
+#ifdef HAVE_WCHAR
+#define __NEED_ERASE(sp, bch, attr)                            \
+       ((sp)->ch != (bch) ||                                   \
+           ((sp)->attr & WA_ATTRIBUTES) != (attr) ||           \
+           (sp)->nsp != NULL ||                                \
+           WCOL(*sp) < 0)
+#else
+#define __NEED_ERASE(sp, bch, attr)                            \
+       ((sp)->ch != (bch) || (sp)->attr != (attr))
+#endif
+
 /* Private functions. */
 int     __cputchar_args(int, void *);
 void     _cursesi_free_keymap(keymap_t *);
diff -r 4426d11fcca9 -r f0ad85a4fd79 lib/libcurses/erase.c
--- a/lib/libcurses/erase.c     Fri Mar 13 02:43:31 2020 +0000
+++ b/lib/libcurses/erase.c     Fri Mar 13 02:57:26 2020 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: erase.c,v 1.30 2020/03/12 12:17:15 roy Exp $   */
+/*     $NetBSD: erase.c,v 1.31 2020/03/13 02:57:26 roy Exp $   */
 
 /*
  * Copyright (c) 1981, 1993, 1994
@@ -34,7 +34,7 @@
 #if 0
 static char sccsid[] = "@(#)erase.c    8.2 (Berkeley) 5/4/94";
 #else
-__RCSID("$NetBSD: erase.c,v 1.30 2020/03/12 12:17:15 roy Exp $");
+__RCSID("$NetBSD: erase.c,v 1.31 2020/03/13 02:57:26 roy Exp $");
 #endif
 #endif                         /* not lint */
 
@@ -81,17 +81,13 @@
                attr = win->battr & __ATTRIBUTES;
        else
                attr = 0;
+
        for (y = 0; y < win->maxy; y++) {
                start = win->alines[y]->line;
                end = &start[win->maxx];
                for (sp = start; sp < end; sp++) {
-                       if (sp->ch == bch &&
-#ifdef HAVE_WCHAR
-                           sp->nsp == NULL && WCOL(*sp) >= 0 &&
-#endif
-                           (sp->attr & WA_ATTRIBUTES) == attr)
+                       if (!(__NEED_ERASE(sp, bch, attr)))
                                continue;
-
                        sp->attr = attr | (sp->attr & __ALTCHARSET);
                        sp->ch = bch;
 #ifdef HAVE_WCHAR