Base version of ncurses-5.7 library
diff --git a/ncurses/base/lib_instr.c b/ncurses/base/lib_instr.c
new file mode 100644
index 0000000..3fb2949
--- /dev/null
+++ b/ncurses/base/lib_instr.c
@@ -0,0 +1,112 @@
+/****************************************************************************
+ * Copyright (c) 1998-2005,2007 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: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
+ * and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
+ ****************************************************************************/
+
+/*
+** lib_instr.c
+**
+** The routine winnstr().
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: lib_instr.c,v 1.16 2007/07/21 20:18:10 tom Exp $")
+
+NCURSES_EXPORT(int)
+winnstr(WINDOW *win, char *str, int n)
+{
+ int i = 0, row, col;
+
+ T((T_CALLED("winnstr(%p,%p,%d)"), win, str, n));
+
+ if (!str)
+ returnCode(0);
+
+ if (win) {
+ getyx(win, row, col);
+
+ if (n < 0)
+ n = win->_maxx - win->_curx + 1;
+
+ for (; i < n;) {
+#if USE_WIDEC_SUPPORT
+ cchar_t *cell = &(win->_line[row].text[col]);
+ wchar_t *wch;
+ attr_t attrs;
+ short pair;
+ int n2;
+ bool done = FALSE;
+ mbstate_t state;
+ size_t i3, n3;
+ char *tmp;
+
+ if (!isWidecExt(*cell)) {
+ n2 = getcchar(cell, 0, 0, 0, 0);
+ if (n2 > 0
+ && (wch = typeCalloc(wchar_t, (unsigned) n2 + 1)) != 0) {
+ if (getcchar(cell, wch, &attrs, &pair, 0) == OK) {
+
+ init_mb(state);
+ n3 = wcstombs(0, wch, 0);
+ if (isEILSEQ(n3) || (n3 == 0)) {
+ ;
+ } else if ((int) (n3 + i) > n) {
+ done = TRUE;
+ } else if ((tmp = typeCalloc(char, n3 + 10)) == 0) {
+ done = TRUE;
+ } else {
+ init_mb(state);
+ wcstombs(tmp, wch, n3);
+ for (i3 = 0; i3 < n3; ++i3)
+ str[i++] = tmp[i3];
+ free(tmp);
+ }
+ }
+ free(wch);
+ if (done)
+ break;
+ }
+ }
+#else
+ str[i++] = (char) CharOf(win->_line[row].text[col]);
+#endif
+ if (++col > win->_maxx) {
+ break;
+ }
+ }
+ }
+ str[i] = '\0'; /* SVr4 does not seem to count the null */
+ T(("winnstr returns %s", _nc_visbuf(str)));
+ returnCode(i);
+}