Update to ncurses-6.0
Change-Id: I98ab2ea8a5e13cca9f8b7cf6277b9b14a4da4299
diff --git a/ncurses/widechar/widechars.c b/ncurses/widechar/widechars.c
new file mode 100644
index 0000000..6951e28
--- /dev/null
+++ b/ncurses/widechar/widechars.c
@@ -0,0 +1,152 @@
+/****************************************************************************
+ * Copyright (c) 2012,2013 Free Software Foundation, Inc. *
+ * *
+ * Permission is hereby granted, free of charge, to any person obtaining a *
+ * copy of this software and associated documentation files (the *
+ * "Software"), to deal in the Software without restriction, including *
+ * without limitation the rights to use, copy, modify, merge, publish, *
+ * distribute, distribute with modifications, sublicense, and/or sell *
+ * copies of the Software, and to permit persons to whom the Software is *
+ * furnished to do so, subject to the following conditions: *
+ * *
+ * The above copyright notice and this permission notice shall be included *
+ * in all copies or substantial portions of the Software. *
+ * *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
+ * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
+ * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
+ * *
+ * Except as contained in this notice, the name(s) of the above copyright *
+ * holders shall not be used in advertising or otherwise to promote the *
+ * sale, use or other dealings in this Software without prior written *
+ * authorization. *
+ ****************************************************************************/
+
+#include <curses.priv.h>
+
+#if USE_WIDEC_SUPPORT
+
+MODULE_ID("$Id: widechars.c,v 1.5 2013/03/02 18:55:51 tom Exp $")
+
+#if defined(__MINGW32__)
+/*
+ * MinGW has wide-character functions, but they do not work correctly.
+ */
+
+int
+_nc_mbtowc(wchar_t *pwc, const char *s, size_t n)
+{
+ int result;
+ int count;
+ int try;
+
+ if (s != 0 && n != 0) {
+ /*
+ * MultiByteToWideChar() can decide to return more than one
+ * wide-character. We want only one. Ignore any trailing null, both
+ * in the initial count and in the conversion.
+ */
+ count = 0;
+ for (try = 1; try <= (int) n; ++try) {
+ count = MultiByteToWideChar(CP_UTF8,
+ MB_ERR_INVALID_CHARS,
+ s,
+ try,
+ pwc,
+ 0);
+ TR(TRACE_BITS, ("...try %d:%d", try, count));
+ if (count > 0) {
+ break;
+ }
+ }
+ if (count < 1 || count > 2) {
+ result = -1;
+ } else {
+ wchar_t actual[2];
+ memset(&actual, 0, sizeof(actual));
+ count = MultiByteToWideChar(CP_UTF8,
+ MB_ERR_INVALID_CHARS,
+ s,
+ try,
+ actual,
+ 2);
+ TR(TRACE_BITS, ("\twin32 ->%#x, %#x", actual[0], actual[1]));
+ *pwc = actual[0];
+ if (actual[1] != 0)
+ result = -1;
+ else
+ result = try;
+ }
+ } else {
+ result = 0;
+ }
+
+ return result;
+}
+
+int
+_nc_mblen(const char *s, size_t n)
+{
+ int result = -1;
+ int count;
+ wchar_t temp;
+
+ if (s != 0 && n != 0) {
+ count = _nc_mbtowc(&temp, s, n);
+ if (count == 1) {
+ int check = WideCharToMultiByte(CP_UTF8,
+ 0,
+ &temp,
+ 1,
+ NULL,
+ 0, /* compute length only */
+ NULL,
+ NULL);
+ TR(TRACE_BITS, ("\tcheck ->%d\n", check));
+ if (check > 0 && (size_t) check <= n) {
+ result = check;
+ }
+ }
+ } else {
+ result = 0;
+ }
+
+ return result;
+}
+
+int __MINGW_NOTHROW
+_nc_wctomb(char *s, wchar_t wc)
+{
+ int result;
+ int check;
+
+ check = WideCharToMultiByte(CP_UTF8,
+ 0,
+ &wc,
+ 1,
+ NULL,
+ 0, /* compute length only */
+ NULL,
+ NULL);
+ if (check > 0) {
+ result = WideCharToMultiByte(CP_UTF8,
+ 0,
+ &wc,
+ 1,
+ s,
+ check + 1,
+ NULL,
+ NULL);
+ } else {
+ result = -1;
+ }
+ return result;
+}
+
+#endif /* __MINGW32__ */
+
+#endif /* USE_WIDEC_SUPPORT */