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2 * Copyright (c) 1998-2009,2019 Free Software Foundation, Inc. *
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5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
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9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
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13 * in all copies or substantial portions of the Software. *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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27 ****************************************************************************/
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
31 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
32 * and: Thomas E. Dickey 1996-on *
33 ****************************************************************************/
36 * comp_hash.c --- Routines to deal with the hashtable of capability
42 #include <curses.priv.h>
47 MODULE_ID("$Id: comp_hash.c,v 1.51 2019/10/12 16:32:13 tom Exp $")
50 * Finds the entry for the given string in the hash table if present.
51 * Returns a pointer to the entry in the table or 0 if not found.
53 /* entrypoint used by tack (do not alter) */
54 NCURSES_EXPORT(struct name_table_entry const *)
55 _nc_find_entry(const char *string,
56 const HashValue * hash_table)
58 bool termcap = (hash_table != _nc_get_hash_table(FALSE));
59 const HashData *data = _nc_get_hash_info(termcap);
61 struct name_table_entry const *ptr = 0;
62 struct name_table_entry const *real_table;
64 hashvalue = data->hash_of(string);
67 && (unsigned) hashvalue < data->table_size
68 && data->table_data[hashvalue] >= 0) {
70 real_table = _nc_get_table(termcap);
71 ptr = real_table + data->table_data[hashvalue];
72 while (!data->compare_names(ptr->nte_name, string)) {
73 if (ptr->nte_link < 0) {
77 ptr = real_table + (ptr->nte_link
78 + data->table_data[data->table_size]);
86 * Finds the entry for the given name with the given type in the given table if
87 * present (as distinct from _nc_find_entry, which finds the last entry
88 * regardless of type).
90 * Returns a pointer to the entry in the table or 0 if not found.
92 NCURSES_EXPORT(struct name_table_entry const *)
93 _nc_find_type_entry(const char *string,
97 struct name_table_entry const *ptr = NULL;
98 const HashData *data = _nc_get_hash_info(termcap);
99 int hashvalue = data->hash_of(string);
102 && (unsigned) hashvalue < data->table_size
103 && data->table_data[hashvalue] >= 0) {
104 const struct name_table_entry *const table = _nc_get_table(termcap);
106 ptr = table + data->table_data[hashvalue];
107 while (ptr->nte_type != type
108 || !data->compare_names(ptr->nte_name, string)) {
109 if (ptr->nte_link < 0) {
113 ptr = table + (ptr->nte_link + data->table_data[data->table_size]);
121 NCURSES_EXPORT(struct user_table_entry const *)
122 _nc_find_user_entry(const char *string)
124 const HashData *data = _nc_get_hash_user();
126 struct user_table_entry const *ptr = 0;
127 struct user_table_entry const *real_table;
129 hashvalue = data->hash_of(string);
132 && (unsigned) hashvalue < data->table_size
133 && data->table_data[hashvalue] >= 0) {
135 real_table = _nc_get_userdefs_table();
136 ptr = real_table + data->table_data[hashvalue];
137 while (!data->compare_names(ptr->ute_name, string)) {
138 if (ptr->ute_link < 0) {
142 ptr = real_table + (ptr->ute_link
143 + data->table_data[data->table_size]);
149 #endif /* NCURSES_XNAMES */