ncurses 6.1 - patch 20190413

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

diff --git a/ncurses/widechar/lib_ins_wch.c b/ncurses/widechar/lib_ins_wch.c
index e44f091b639f71fecbd565e0e469da2f708f95c7..57f142b7cad9912428dbbc800fea4ac7d7f18887 100644 (file)
--- a/ncurses/widechar/lib_ins_wch.c
+++ b/ncurses/widechar/lib_ins_wch.c
@@ -1,5 +1,5 @@
 /****************************************************************************
- * Copyright (c) 2002-2005,2009 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            *
@@ -39,7 +39,7 @@
 
 #include <curses.priv.h>
 
-MODULE_ID("$Id: lib_ins_wch.c,v 1.11 2009/10/24 22:43:14 tom Exp $")
+MODULE_ID("$Id: lib_ins_wch.c,v 1.22 2017/04/08 22:52:26 tom Exp $")
 
 /*
  * Insert the given character, updating the current location to simplify
@@ -49,43 +49,46 @@ NCURSES_EXPORT(int)
 _nc_insert_wch(WINDOW *win, const cchar_t *wch)
 {
     int cells = wcwidth(CharOf(CHDEREF(wch)));
-    int cell;
-
-    if (cells <= 0)
-       cells = 1;
-
-    if (win->_curx <= win->_maxx) {
-       struct ldat *line = &(win->_line[win->_cury]);
-       NCURSES_CH_T *end = &(line->text[win->_curx]);
-       NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
-       NCURSES_CH_T *temp2 = temp1 - cells;
-
-       CHANGED_TO_EOL(line, win->_curx, win->_maxx);
-       while (temp1 > end)
-           *temp1-- = *temp2--;
+    int code = OK;
+
+    if (cells < 0) {
+       code = winsch(win, (chtype) CharOf(CHDEREF(wch)));
+    } else {
+       if (cells == 0)
+           cells = 1;
+
+       if (win->_curx <= win->_maxx) {
+           int cell;
+           struct ldat *line = &(win->_line[win->_cury]);
+           NCURSES_CH_T *end = &(line->text[win->_curx]);
+           NCURSES_CH_T *temp1 = &(line->text[win->_maxx]);
+           NCURSES_CH_T *temp2 = temp1 - cells;
+
+           CHANGED_TO_EOL(line, win->_curx, win->_maxx);
+           while (temp1 > end)
+               *temp1-- = *temp2--;
+
+           *temp1 = _nc_render(win, *wch);
+           for (cell = 1; cell < cells; ++cell) {
+               SetWidecExt(temp1[cell], cell);
+           }
 
-       *temp1 = _nc_render(win, *wch);
-       for (cell = 1; cell < cells; ++cell) {
-           SetWidecExt(temp1[cell], cell);
+           win->_curx = (NCURSES_SIZE_T) (win->_curx + cells);
        }
-
-       win->_curx++;
     }
-    return OK;
+    return code;
 }
 
 NCURSES_EXPORT(int)
 wins_wch(WINDOW *win, const cchar_t *wch)
 {
-    NCURSES_SIZE_T oy;
-    NCURSES_SIZE_T ox;
     int code = ERR;
 
     T((T_CALLED("wins_wch(%p, %s)"), (void *) win, _tracecchar_t(wch)));
 
     if (win != 0) {
-       oy = win->_cury;
-       ox = win->_curx;
+       NCURSES_SIZE_T oy = win->_cury;
+       NCURSES_SIZE_T ox = win->_curx;
 
        code = _nc_insert_wch(win, wch);
 
@@ -100,9 +103,6 @@ NCURSES_EXPORT(int)
 wins_nwstr(WINDOW *win, const wchar_t *wstr, int n)
 {
     int code = ERR;
-    NCURSES_SIZE_T oy;
-    NCURSES_SIZE_T ox;
-    const wchar_t *cp;
 
     T((T_CALLED("wins_nwstr(%p,%s,%d)"),
        (void *) win, _nc_viswbufn(wstr, n), n));
@@ -110,24 +110,26 @@ wins_nwstr(WINDOW *win, const wchar_t *wstr, int n)
     if (win != 0
        && wstr != 0) {
        if (n < 1)
-           n = wcslen(wstr);
+           n = (int) wcslen(wstr);
        code = OK;
+
        if (n > 0) {
+           const wchar_t *cp;
            SCREEN *sp = _nc_screen_of(win);
+           NCURSES_SIZE_T oy = win->_cury;
+           NCURSES_SIZE_T ox = win->_curx;
 
-           oy = win->_cury;
-           ox = win->_curx;
-           for (cp = wstr; *cp && ((cp - wstr) < n); cp++) {
+           for (cp = wstr; ((cp - wstr) < n) && *cp; cp++) {
                int len = wcwidth(*cp);
 
-               if (len != 1 || !is8bits(*cp)) {
+               if ((len >= 0 && len != 1) || !is7bits(*cp)) {
                    cchar_t tmp_cchar;
                    wchar_t tmp_wchar = *cp;
                    memset(&tmp_cchar, 0, sizeof(tmp_cchar));
                    (void) setcchar(&tmp_cchar,
                                    &tmp_wchar,
                                    WA_NORMAL,
-                                   0,
+                                   (short) 0,
                                    (void *) 0);
                    code = _nc_insert_wch(win, &tmp_cchar);
                } else {