2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.9 1994-10-04 12:08:19 adam
10 * Revision 1.8 1994/10/03 17:23:11 adam
11 * First version of dictionary lookup with regular expressions and errors.
13 * Revision 1.7 1994/09/22 10:44:47 adam
14 * Don't remember what changed!!
16 * Revision 1.6 1994/09/16 15:39:21 adam
17 * Initial code of lookup - not tested yet.
19 * Revision 1.5 1994/09/06 13:05:29 adam
20 * Further development of insertion. Some special cases are
21 * not properly handled yet! assert(0) are put here. The
22 * binary search in each page definitely reduce usr CPU.
24 * Revision 1.4 1994/09/01 17:44:40 adam
25 * Work on insertion in dictionary. Not finished yet.
26 * CVS ----------------------------------------------------------------------
28 * Revision 1.3 1994/08/18 12:41:12 adam
29 * Some development of dictionary. Not finished at all!
31 * Revision 1.2 1994/08/17 13:32:33 adam
32 * Use cache in dict - not in bfile.
34 * Revision 1.1 1994/08/16 16:26:53 adam
44 typedef unsigned Dict_ptr;
45 typedef char Dict_char;
50 Dict_ptr free_list, last;
53 struct Dict_file_block
55 struct Dict_file_block *h_next, **h_prev;
56 struct Dict_file_block *lru_next, *lru_prev;
62 typedef struct Dict_file_struct
67 struct Dict_file_block *all_blocks;
68 struct Dict_file_block *free_list;
69 struct Dict_file_block **hash_array;
71 struct Dict_file_block *lru_back, *lru_front;
80 typedef struct Dict_struct {
83 struct Dict_head head;
87 #define DICT_MAGIC "dict00"
89 #define DICT_PAGESIZE 8192
91 int dict_bf_readp (Dict_BFile bf, int no, void **bufp);
92 int dict_bf_newp (Dict_BFile bf, int no, void **bufp);
93 int dict_bf_touch (Dict_BFile bf, int no);
94 void dict_bf_flush_blocks (Dict_BFile bf, int no_to_flush);
95 Dict_BFile dict_bf_open (const char *name, int block_size, int cache, int rw);
96 int dict_bf_close (Dict_BFile dbf);
98 Dict dict_open (const char *name, int cache, int rw);
99 int dict_close (Dict dict);
100 int dict_insert (Dict dict, const Dict_char *p, int userlen,
102 char *dict_lookup (Dict dict, Dict_char *p);
103 int dict_lookup_ec (Dict dict, Dict_char *p, int range,
104 int (*f)(Dict_char *name));
105 int dict_lookup_grep (Dict dict, Dict_char *p, int range,
106 int (*f)(Dict_char *name, char *info));
107 int dict_strcmp (const Dict_char *s1, const Dict_char *s2);
108 int dict_strlen (const Dict_char *s);
111 #define DICT_type(x) 0[(Dict_ptr*) x]
112 #define DICT_backptr(x) 1[(Dict_ptr*) x]
113 #define DICT_nextptr(x) 2[(Dict_ptr*) x]
114 #define DICT_nodir(x) 0[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
115 #define DICT_size(x) 1[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
116 #define DICT_infoffset (3*sizeof(Dict_ptr)+2*sizeof(short))
118 #define DICT_to_str(x) sizeof(Dict_info)+sizeof(Dict_ptr)
122 backptr pointer to parent
123 nextptr pointer to next page (if any)
125 size size of strings,info,ptr entries