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