ncurses 6.0 - patch 20180106

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

diff --git a/ncurses/widechar/lib_inwstr.c b/ncurses/widechar/lib_inwstr.c
index 91b1e0f1d2b1b509efe1b7ef9505f60e9cac279a..3443ec6cbcac4f9281a02eec2bd1517533ecc9dc 100644 (file)
--- a/ncurses/widechar/lib_inwstr.c
+++ b/ncurses/widechar/lib_inwstr.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 2002 Free Software Foundation, Inc.                        *
+ * Copyright (c) 2002-2016,2017 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            *
@@ -27,7 +27,7 @@
  ****************************************************************************/
 
 /****************************************************************************
- * Author: Thomas Dickey 2002                                               *
+ * Author: Thomas Dickey                                                    *
  ****************************************************************************/
 
 /*
@@ -39,31 +39,39 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_inwstr.c,v 1.3 2002/10/06 00:56:36 tom Exp $")
+MODULE_ID("$Id: lib_inwstr.c,v 1.8 2017/10/29 00:03:29 tom Exp $")
 
 NCURSES_EXPORT(int)
-winnwstr(WINDOW *win, wchar_t * wstr, int n)
+winnwstr(WINDOW *win, wchar_t *wstr, int n)
 {
-    int row, col, inx;
     int count = 0;
-    int last = 0;
     cchar_t *text;
-    wchar_t wch;
 
-    T((T_CALLED("winnwstr(%p,%p,%d)"), win, wstr, n));
+    T((T_CALLED("winnwstr(%p,%p,%d)"), (void *) win, (void *) wstr, n));
     if (wstr != 0) {
        if (win) {
+           int row, col;
+           int last = 0;
+           bool done = FALSE;
+
            getyx(win, row, col);
 
            text = win->_line[row].text;
-           while (count < n && count != ERR) {
-               if (!isnac(text[col])) {
+           while (count < n && !done && count != ERR) {
+
+               if (!isWidecExt(text[col])) {
+                   int inx;
+                   wchar_t wch;
+
                    for (inx = 0; (inx < CCHARW_MAX)
                         && ((wch = text[col].chars[inx]) != 0);
                         ++inx) {
                        if (count + 1 > n) {
-                           if ((count = last) == 0) {
+                           done = TRUE;
+                           if (last == 0) {
                                count = ERR;    /* error if we store nothing */
+                           } else {
+                               count = last;   /* only store complete chars */
                            }
                            break;
                        }
@@ -90,11 +98,16 @@ winnwstr(WINDOW *win, wchar_t * wstr, int n)
  * it does not define what happens for a negative count with winnwstr().
  */
 NCURSES_EXPORT(int)
-winwstr(WINDOW *win, wchar_t * wstr)
+winwstr(WINDOW *win, wchar_t *wstr)
 {
     int result = OK;
-    T((T_CALLED("winwstr(%p,%p)"), win, wstr));
-    if (winnwstr(win, wstr, CCHARW_MAX * (win->_maxx - win->_curx + 1)) == ERR)
+
+    T((T_CALLED("winwstr(%p,%p)"), (void *) win, (void *) wstr));
+    if (win == 0) {
+       result = ERR;
+    } else if (winnwstr(win, wstr,
+                       CCHARW_MAX * (win->_maxx - win->_curx + 1)) == ERR) {
        result = ERR;
+    }
     returnCode(result);
 }