Add ncurses 6.4

third_party/ncurses/comp_hash.c

@@ -0,0 +1,150 @@
+/****************************************************************************
+ * Copyright 2019,2020 Thomas E. Dickey                                     *
+ * Copyright 1998-2008,2009 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                 *
+ ****************************************************************************/
+
+/*
+ *	comp_hash.c --- Routines to deal with the hashtable of capability
+ *			names.
+ *
+ */
+
+#define USE_TERMLIB 1
+#include "curses.priv.h"
+
+#include "tic.h"
+#include "hashsize.h"
+
+MODULE_ID("$Id: comp_hash.c,v 1.53 2020/02/02 23:34:34 tom Exp $")
+
+/*
+ * Finds the entry for the given string in the hash table if present.
+ * Returns a pointer to the entry in the table or 0 if not found.
+ */
+/* entrypoint used by tack 1.07 */
+NCURSES_EXPORT(struct name_table_entry const *)
+_nc_find_entry(const char *string,
+	       const HashValue * hash_table)
+{
+    bool termcap = (hash_table != _nc_get_hash_table(FALSE));
+    const HashData *data = _nc_get_hash_info(termcap);
+    int hashvalue;
+    struct name_table_entry const *ptr = 0;
+    struct name_table_entry const *real_table;
+
+    hashvalue = data->hash_of(string);
+
+    if (hashvalue >= 0
+	&& (unsigned) hashvalue < data->table_size
+	&& data->table_data[hashvalue] >= 0) {
+
+	real_table = _nc_get_table(termcap);
+	ptr = real_table + data->table_data[hashvalue];
+	while (!data->compare_names(ptr->nte_name, string)) {
+	    if (ptr->nte_link < 0) {
+		ptr = 0;
+		break;
+	    }
+	    ptr = real_table + (ptr->nte_link
+				+ data->table_data[data->table_size]);
+	}
+    }
+
+    return (ptr);
+}
+
+/*
+ * Finds the entry for the given name with the given type in the given table if
+ * present (as distinct from _nc_find_entry, which finds the last entry
+ * regardless of type).
+ *
+ * Returns a pointer to the entry in the table or 0 if not found.
+ */
+NCURSES_EXPORT(struct name_table_entry const *)
+_nc_find_type_entry(const char *string,
+		    int type,
+		    bool termcap)
+{
+    struct name_table_entry const *ptr = NULL;
+    const HashData *data = _nc_get_hash_info(termcap);
+    int hashvalue = data->hash_of(string);
+
+    if (hashvalue >= 0
+	&& (unsigned) hashvalue < data->table_size
+	&& data->table_data[hashvalue] >= 0) {
+	const struct name_table_entry *const table = _nc_get_table(termcap);
+
+	ptr = table + data->table_data[hashvalue];
+	while (ptr->nte_type != type
+	       || !data->compare_names(ptr->nte_name, string)) {
+	    if (ptr->nte_link < 0) {
+		ptr = 0;
+		break;
+	    }
+	    ptr = table + (ptr->nte_link + data->table_data[data->table_size]);
+	}
+    }
+
+    return ptr;
+}
+
+#if NCURSES_XNAMES
+NCURSES_EXPORT(struct user_table_entry const *)
+_nc_find_user_entry(const char *string)
+{
+    const HashData *data = _nc_get_hash_user();
+    int hashvalue;
+    struct user_table_entry const *ptr = 0;
+    struct user_table_entry const *real_table;
+
+    hashvalue = data->hash_of(string);
+
+    if (hashvalue >= 0
+	&& (unsigned) hashvalue < data->table_size
+	&& data->table_data[hashvalue] >= 0) {
+
+	real_table = _nc_get_userdefs_table();
+	ptr = real_table + data->table_data[hashvalue];
+	while (!data->compare_names(ptr->ute_name, string)) {
+	    if (ptr->ute_link < 0) {
+		ptr = 0;
+		break;
+	    }
+	    ptr = real_table + (ptr->ute_link
+				+ data->table_data[data->table_size]);
+	}
+    }
+
+    return (ptr);
+}
+#endif /* NCURSES_XNAMES */