Base version of ncurses-5.7 library
diff --git a/ncurses/tinfo/add_tries.c b/ncurses/tinfo/add_tries.c
new file mode 100644
index 0000000..455d142
--- /dev/null
+++ b/ncurses/tinfo/add_tries.c
@@ -0,0 +1,120 @@
+/****************************************************************************
+ * Copyright (c) 1998-2005,2006 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 1998-on *
+ ****************************************************************************/
+
+/*
+** add_tries.c
+**
+** Add keycode/string to tries-tree.
+**
+*/
+
+#include <curses.priv.h>
+
+MODULE_ID("$Id: add_tries.c,v 1.8 2006/12/30 23:15:26 tom Exp $")
+
+#define SET_TRY(dst,src) if ((dst->ch = *src++) == 128) dst->ch = '\0'
+#define CMP_TRY(a,b) ((a)? (a == b) : (b == 128))
+
+NCURSES_EXPORT(int)
+_nc_add_to_try(TRIES ** tree, const char *str, unsigned code)
+{
+ TRIES *ptr, *savedptr;
+ unsigned const char *txt = (unsigned const char *) str;
+
+ T((T_CALLED("_nc_add_to_try(%p, %s, %u)"), *tree, _nc_visbuf(str), code));
+ if (txt == 0 || *txt == '\0' || code == 0)
+ returnCode(ERR);
+
+ if ((*tree) != 0) {
+ ptr = savedptr = (*tree);
+
+ for (;;) {
+ unsigned char cmp = *txt;
+
+ while (!CMP_TRY(ptr->ch, cmp)
+ && ptr->sibling != 0)
+ ptr = ptr->sibling;
+
+ if (CMP_TRY(ptr->ch, cmp)) {
+ if (*(++txt) == '\0') {
+ ptr->value = code;
+ returnCode(OK);
+ }
+ if (ptr->child != 0)
+ ptr = ptr->child;
+ else
+ break;
+ } else {
+ if ((ptr->sibling = typeCalloc(TRIES, 1)) == 0) {
+ returnCode(ERR);
+ }
+
+ savedptr = ptr = ptr->sibling;
+ SET_TRY(ptr, txt);
+ ptr->value = 0;
+
+ break;
+ }
+ } /* end for (;;) */
+ } else { /* (*tree) == 0 :: First sequence to be added */
+ savedptr = ptr = (*tree) = typeCalloc(TRIES, 1);
+
+ if (ptr == 0) {
+ returnCode(ERR);
+ }
+
+ SET_TRY(ptr, txt);
+ ptr->value = 0;
+ }
+
+ /* at this point, we are adding to the try. ptr->child == 0 */
+
+ while (*txt) {
+ ptr->child = typeCalloc(TRIES, 1);
+
+ ptr = ptr->child;
+
+ if (ptr == 0) {
+ while ((ptr = savedptr) != 0) {
+ savedptr = ptr->child;
+ free(ptr);
+ }
+ returnCode(ERR);
+ }
+
+ SET_TRY(ptr, txt);
+ ptr->value = 0;
+ }
+
+ ptr->value = code;
+ returnCode(OK);
+}