2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.11 1995-09-04 09:09:51 adam
8 * String arg in dict lookup is const.
11 * Revision 1.10 1994/10/05 12:16:58 adam
12 * Pagesize is a resource now.
14 * Revision 1.9 1994/10/04 12:08:19 adam
17 * Revision 1.8 1994/10/03 17:23:11 adam
18 * First version of dictionary lookup with regular expressions and errors.
20 * Revision 1.7 1994/09/22 10:44:47 adam
21 * Don't remember what changed!!
23 * Revision 1.6 1994/09/16 15:39:21 adam
24 * Initial code of lookup - not tested yet.
26 * Revision 1.5 1994/09/06 13:05:29 adam
27 * Further development of insertion. Some special cases are
28 * not properly handled yet! assert(0) are put here. The
29 * binary search in each page definitely reduce usr CPU.
31 * Revision 1.4 1994/09/01 17:44:40 adam
32 * Work on insertion in dictionary. Not finished yet.
34 * Revision 1.3 1994/08/18 12:41:12 adam
35 * Some development of dictionary. Not finished at all!
37 * Revision 1.2 1994/08/17 13:32:33 adam
38 * Use cache in dict - not in bfile.
40 * Revision 1.1 1994/08/16 16:26:53 adam
50 typedef unsigned Dict_ptr;
51 typedef char Dict_char;
56 Dict_ptr free_list, last;
59 struct Dict_file_block
61 struct Dict_file_block *h_next, **h_prev;
62 struct Dict_file_block *lru_next, *lru_prev;
68 typedef struct Dict_file_struct
73 struct Dict_file_block *all_blocks;
74 struct Dict_file_block *free_list;
75 struct Dict_file_block **hash_array;
77 struct Dict_file_block *lru_back, *lru_front;
86 typedef struct Dict_struct {
89 struct Dict_head head;
93 #define DICT_MAGIC "dict00"
95 #define DICT_DEFAULT_PAGESIZE "8192"
97 int dict_bf_readp (Dict_BFile bf, int no, void **bufp);
98 int dict_bf_newp (Dict_BFile bf, int no, void **bufp);
99 int dict_bf_touch (Dict_BFile bf, int no);
100 void dict_bf_flush_blocks (Dict_BFile bf, int no_to_flush);
101 Dict_BFile dict_bf_open (const char *name, int block_size, int cache, int rw);
102 int dict_bf_close (Dict_BFile dbf);
104 Dict dict_open (const char *name, int cache, int rw);
105 int dict_close (Dict dict);
106 int dict_insert (Dict dict, const Dict_char *p, int userlen,
108 char *dict_lookup (Dict dict, const Dict_char *p);
109 int dict_lookup_ec (Dict dict, Dict_char *p, int range,
110 int (*f)(Dict_char *name));
111 int dict_lookup_grep (Dict dict, Dict_char *p, int range,
112 int (*f)(Dict_char *name, char *info));
113 int dict_strcmp (const Dict_char *s1, const Dict_char *s2);
114 int dict_strlen (const Dict_char *s);
117 #define DICT_type(x) 0[(Dict_ptr*) x]
118 #define DICT_backptr(x) 1[(Dict_ptr*) x]
119 #define DICT_nextptr(x) 2[(Dict_ptr*) x]
120 #define DICT_nodir(x) 0[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
121 #define DICT_size(x) 1[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
122 #define DICT_infoffset (3*sizeof(Dict_ptr)+2*sizeof(short))
123 #define DICT_pagesize(x) ((x)->head.page_size)
125 #define DICT_to_str(x) sizeof(Dict_info)+sizeof(Dict_ptr)
129 backptr pointer to parent
130 nextptr pointer to next page (if any)
132 size size of strings,info,ptr entries