ncurses-4.2-990116

1 files changed, 71 insertions, 0 deletions

diff --git a/lib/libcurses/base/keyok.c b/lib/libcurses/base/keyok.c
new file mode 100644
index 00000000000..fb343b12162
--- /dev/null
+++ b/lib/libcurses/base/keyok.c
@@ -0,0 +1,71 @@
+/*	$OpenBSD: keyok.c,v 1.1 1999/01/18 19:09:34 millert Exp $	*/
+
+/****************************************************************************
+ * Copyright (c) 1998 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 E. Dickey <dickey@clark.net> 1997                        *
+ ****************************************************************************/
+
+#include <curses.priv.h>
+
+MODULE_ID("$From: keyok.c,v 1.2 1998/02/11 12:13:54 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);
+}