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