ncurses 5.3

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

diff --git a/ncurses/widechar/lib_inwstr.c b/ncurses/widechar/lib_inwstr.c
new file mode 100644 (file)
index 0000000..91b1e0f
--- /dev/null
+++ b/ncurses/widechar/lib_inwstr.c
@@ -0,0 +1,100 @@
+/****************************************************************************
+ * Copyright (c) 2002 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.                                                           *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Author: Thomas Dickey 2002                                               *
+ ****************************************************************************/
+
+/*
+**     lib_inwstr.c
+**
+**     The routines winnwstr() and winwstr().
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_inwstr.c,v 1.3 2002/10/06 00:56:36 tom Exp $")
+
+NCURSES_EXPORT(int)
+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));
+    if (wstr != 0) {
+       if (win) {
+           getyx(win, row, col);
+
+           text = win->_line[row].text;
+           while (count < n && count != ERR) {
+               if (!isnac(text[col])) {
+                   for (inx = 0; (inx < CCHARW_MAX)
+                        && ((wch = text[col].chars[inx]) != 0);
+                        ++inx) {
+                       if (count + 1 > n) {
+                           if ((count = last) == 0) {
+                               count = ERR;    /* error if we store nothing */
+                           }
+                           break;
+                       }
+                       wstr[count++] = wch;
+                   }
+               }
+               last = count;
+               if (++col > win->_maxx) {
+                   break;
+               }
+           }
+       }
+       if (count > 0) {
+           wstr[count] = '\0';
+           T(("winnwstr returns %s", _nc_viswbuf(wstr)));
+       }
+    }
+    returnCode(count);
+}
+
+/*
+ * X/Open says winwstr() returns OK if not ERR.  If that is not a blunder, it
+ * must have a null termination on the string (see above).  Unlike winnstr(),
+ * it does not define what happens for a negative count with winnwstr().
+ */
+NCURSES_EXPORT(int)
+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)
+       result = ERR;
+    returnCode(result);
+}