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