ncurses 6.4 - patch 20240420

[ncurses.git] / ncurses / widechar / lib_cchar.c

diff --git a/ncurses/widechar/lib_cchar.c b/ncurses/widechar/lib_cchar.c
index ed1d236d900c5e6ee5052fca904d95f31b0980b5..451c5dcb518b1ff9c36f33afd9722f77deeb6b04 100644 (file)
--- a/ncurses/widechar/lib_cchar.c
+++ b/ncurses/widechar/lib_cchar.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright 2019,2020 Thomas E. Dickey                                     *
+ * Copyright 2019-2021,2022 Thomas E. Dickey                                *
  * Copyright 2001-2016,2017 Free Software Foundation, Inc.                  *
  *                                                                          *
  * Permission is hereby granted, free of charge, to any person obtaining a  *
@@ -35,10 +35,11 @@
 */
 
 #include <curses.priv.h>
+#include <wchar.h>
 
-MODULE_ID("$Id: lib_cchar.c,v 1.33 2020/02/02 23:34:34 tom Exp $")
+MODULE_ID("$Id: lib_cchar.c,v 1.38 2022/07/27 08:03:16 tom Exp $")
 
-/* 
+/*
  * The SuSv2 description leaves some room for interpretation.  We'll assume wch
  * points to a string which is L'\0' terminated, contains at least one
  * character with strictly positive width, which must be the first, and
@@ -55,7 +56,7 @@ setcchar(cchar_t *wcval,
     int color_pair = pair_arg;
     unsigned len;
 
-    TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,%lu,%d,%p)"),
+    TR(TRACE_CCALLS, (T_CALLED("setcchar(%p,%s,attrs=%lu,pair=%d,%p)"),
                      (void *) wcval, _nc_viswbuf(wch),
                      (unsigned long) attrs, color_pair, opts));
 
@@ -104,7 +105,6 @@ getcchar(const cchar_t *wcval,
         void *opts)
 {
     int code = ERR;
-    int color_pair;
 
     TR(TRACE_CCALLS, (T_CALLED("getcchar(%p,%p,%p,%p,%p)"),
                      (const void *) wcval,
@@ -113,14 +113,22 @@ getcchar(const cchar_t *wcval,
                      (void *) pair_arg,
                      opts));
 
-    if (opts == NULL && wcval != NULL) {
+#if !NCURSES_EXT_COLORS
+    if (opts != NULL) {
+       ;                       /* empty */
+    } else
+#endif
+    if (wcval != NULL) {
        wchar_t *wp;
        int len;
 
+#if HAVE_WMEMCHR
        len = ((wp = wmemchr(wcval->chars, L'\0', (size_t) CCHARW_MAX))
               ? (int) (wp - wcval->chars)
               : CCHARW_MAX);
-
+#else
+       len = wcsnlen(wcval->chars, CCHARW_MAX);
+#endif
        if (wch == NULL) {
            /*
             * If the value is a null, set the length to 1.
@@ -130,6 +138,10 @@ getcchar(const cchar_t *wcval,
        } else if (attrs == 0 || pair_arg == 0) {
            code = ERR;
        } else if (len >= 0) {
+           int color_pair;
+
+           TR(TRACE_CCALLS, ("copy %d wchars, first is %s", len,
+                             _tracecchar_t(wcval)));
            *attrs = AttrOf(*wcval) & A_ATTRIBUTES;
            color_pair = GetPair(*wcval);
            get_extended_pair(opts, color_pair);