1 files changed, 59 insertions, 0 deletions
diff --git a/lib/libcurses/keyok.c b/lib/libcurses/keyok.c
new file mode 100644
index 00000000000..6c334f87042
--- /dev/null
+++ b/lib/libcurses/keyok.c
@@ -0,0 +1,59 @@
+/*	$OpenBSD: keyok.c,v 1.1 1997/12/03 05:21:09 millert Exp $	*/
+
+/******************************************************************************
+ * Copyright 1997 by Thomas E. Dickey <dickey@clark.net>                      *
+ * All Rights Reserved.                                                       *
+ *                                                                            *
+ * Permission to use, copy, modify, and distribute this software and its      *
+ * documentation for any purpose and without fee is hereby granted, provided  *
+ * that the above copyright notice appear in all copies and that both that    *
+ * copyright notice and this permission notice appear in supporting           *
+ * documentation, and that the name of the above listed copyright holder(s)   *
+ * not be used in advertising or publicity pertaining to distribution of the  *
+ * software without specific, written prior permission. THE ABOVE LISTED      *
+ * COPYRIGHT HOLDER(S) DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,  *
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO     *
+ * EVENT SHALL THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY         *
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER       *
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF       *
+ * CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN        *
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.                   *
+ ******************************************************************************/
+
+#include <curses.priv.h>
+
+MODULE_ID("Id: keyok.c,v 1.1 1997/05/29 01:32:51 tom Exp $")
+
+/*
+ * Enable (or disable) ncurses' interpretation of a keycode by adding (or
+ * removing) the corresponding 'tries' entry.
+ *
+ * Do this by storing a second tree of tries, which records the disabled keys. 
+ * The simplest way to copy is to make a function that returns the string (with
+ * nulls set to 0200), then use that to reinsert the string into the
+ * corresponding tree.
+ */
+
+int keyok(int c, bool flag)
+{
+	int code = ERR;
+	char *s;
+
+	T((T_CALLED("keyok(%d,%d)"), c, flag));
+	if (flag) {
+		if ((s = _nc_expand_try(SP->_key_ok, c, 0)) != 0
+		 && _nc_remove_key(&(SP->_key_ok), c)) {
+			_nc_add_to_try(&(SP->_keytry), s, c);
+			free(s);
+			code = OK;
+		}
+	} else {
+		if ((s = _nc_expand_try(SP->_keytry, c, 0)) != 0
+		 && _nc_remove_key(&(SP->_keytry), c)) {
+			_nc_add_to_try(&(SP->_key_ok), s, c);
+			free(s);
+			code = OK;
+		}
+	}
+	returnCode(code);
+}