2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.17 1995-12-07 11:47:04 adam
8 * Default pagesize is 4k instead of 8k.
10 * Revision 1.16 1995/12/06 14:41:13 adam
11 * New function: dict_delete.
13 * Revision 1.15 1995/10/27 13:59:17 adam
14 * Function dict_look_grep got extra parameter max_pos that upon return
15 * hold length of longest prefix that matches pattern.
17 * Revision 1.14 1995/10/09 16:18:35 adam
18 * Function dict_lookup_grep got extra client data parameter.
20 * Revision 1.13 1995/10/06 09:03:51 adam
21 * First version of scan.
23 * Revision 1.12 1995/09/14 11:53:02 adam
24 * Grep handle function parameter info is const now.
26 * Revision 1.11 1995/09/04 09:09:51 adam
27 * String arg in dict lookup is const.
30 * Revision 1.10 1994/10/05 12:16:58 adam
31 * Pagesize is a resource now.
33 * Revision 1.9 1994/10/04 12:08:19 adam
36 * Revision 1.8 1994/10/03 17:23:11 adam
37 * First version of dictionary lookup with regular expressions and errors.
39 * Revision 1.7 1994/09/22 10:44:47 adam
40 * Don't remember what changed!!
42 * Revision 1.6 1994/09/16 15:39:21 adam
43 * Initial code of lookup - not tested yet.
45 * Revision 1.5 1994/09/06 13:05:29 adam
46 * Further development of insertion. Some special cases are
47 * not properly handled yet! assert(0) are put here. The
48 * binary search in each page definitely reduce usr CPU.
50 * Revision 1.4 1994/09/01 17:44:40 adam
51 * Work on insertion in dictionary. Not finished yet.
53 * Revision 1.3 1994/08/18 12:41:12 adam
54 * Some development of dictionary. Not finished at all!
56 * Revision 1.2 1994/08/17 13:32:33 adam
57 * Use cache in dict - not in bfile.
59 * Revision 1.1 1994/08/16 16:26:53 adam
69 typedef unsigned Dict_ptr;
70 typedef char Dict_char;
75 Dict_ptr free_list, last;
78 struct Dict_file_block
80 struct Dict_file_block *h_next, **h_prev;
81 struct Dict_file_block *lru_next, *lru_prev;
87 typedef struct Dict_file_struct
92 struct Dict_file_block *all_blocks;
93 struct Dict_file_block *free_list;
94 struct Dict_file_block **hash_array;
96 struct Dict_file_block *lru_back, *lru_front;
105 typedef struct Dict_struct {
108 struct Dict_head head;
112 #define DICT_MAGIC "dict00"
114 #define DICT_DEFAULT_PAGESIZE "4096"
116 int dict_bf_readp (Dict_BFile bf, int no, void **bufp);
117 int dict_bf_newp (Dict_BFile bf, int no, void **bufp);
118 int dict_bf_touch (Dict_BFile bf, int no);
119 void dict_bf_flush_blocks (Dict_BFile bf, int no_to_flush);
120 Dict_BFile dict_bf_open (const char *name, int block_size, int cache, int rw);
121 int dict_bf_close (Dict_BFile dbf);
123 Dict dict_open (const char *name, int cache, int rw);
124 int dict_close (Dict dict);
125 int dict_insert (Dict dict, const Dict_char *p, int userlen,
127 int dict_delete (Dict dict, const Dict_char *p);
128 char *dict_lookup (Dict dict, const Dict_char *p);
129 int dict_lookup_ec (Dict dict, Dict_char *p, int range,
130 int (*f)(Dict_char *name));
131 int dict_lookup_grep (Dict dict, Dict_char *p, int range, void *client,
133 int (*f)(Dict_char *name, const char *info,
135 int dict_strcmp (const Dict_char *s1, const Dict_char *s2);
136 int dict_strlen (const Dict_char *s);
137 int dict_scan (Dict dict, Dict_char *str,
138 int *before, int *after, void *client,
139 int (*f)(Dict_char *name, const char *info, int pos,
143 #define DICT_type(x) 0[(Dict_ptr*) x]
144 #define DICT_backptr(x) 1[(Dict_ptr*) x]
145 #define DICT_nextptr(x) 2[(Dict_ptr*) x]
146 #define DICT_nodir(x) 0[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
147 #define DICT_size(x) 1[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
148 #define DICT_infoffset (3*sizeof(Dict_ptr)+2*sizeof(short))
149 #define DICT_pagesize(x) ((x)->head.page_size)
151 #define DICT_to_str(x) sizeof(Dict_info)+sizeof(Dict_ptr)
155 backptr pointer to parent
156 nextptr pointer to next page (if any)
158 size size of strings,info,ptr entries