2 * Copyright © 2006 Carl Worth
4 * This program is free software; you can redistribute it and\/or modify
5 * it under the terms of the GNU General Public License as published by
6 * the Free Software Foundation; either version 2, or (at your option)
9 * This program is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write to the Free Software Foundation,
16 * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA."
34 typedef struct _trie {
36 struct _trie *next[26];
39 typedef trie_t dict_t;
40 typedef trie_t *dict_cursor_t;
41 typedef uint32_t dict_entry_t;
43 /* Initialization and cleanup */
45 dict_init (dict_t *dict);
48 dict_fini (dict_t *dict);
50 /* Adding new words */
52 dict_add_word (dict_t *dict,
55 dict_add_words_from_file (dict_t *dict,
56 const char *filename);
58 /* Looking up an entry in the dictionary */
60 dict_lookup (dict_t *dict,
64 (*dict_entry_predicate_t) (dict_entry_t entry);
67 dict_count (dict_t *dict,
68 dict_entry_predicate_t predicate);
70 /* Querying a dictionary entry. The dict interface uses 1 bit.
71 * All of the remaining bits are available for application use.
73 #define DICT_ENTRY_IS_WORD(entry) ((entry) && ((*entry) & 0x01))
75 /* Printing the dictionary */
77 dict_print (dict_t *dict);
80 dict_print_if (dict_t *dict,
81 dict_entry_predicate_t predicate);
84 dict_print_by_length_if (dict_t *dict,
85 dict_entry_predicate_t predicate);
87 /* Character-by-character perusal of the dictionary */
89 dict_root (dict_t *dict);
92 dict_cursor_next (dict_cursor_t cursor,
96 dict_cursor_resolve (dict_cursor_t cursor);
98 #define DICT_CURSOR_NIL NULL
100 #endif /* _DICT_H_ */