2 * Copyright (C) 1994, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.3 1994-08-18 12:41:12 adam
8 * Some development of dictionary. Not finished at all!
10 * Revision 1.2 1994/08/17 13:32:33 adam
11 * Use cache in dict - not in bfile.
13 * Revision 1.1 1994/08/16 16:26:53 adam
23 typedef unsigned Dict_ptr;
24 typedef char Dict_char;
29 Dict_ptr free_list, last;
32 struct Dict_file_block
34 struct Dict_file_block *h_next, **h_prev;
35 struct Dict_file_block *lru_next, *lru_prev;
41 typedef struct Dict_file_struct
46 struct Dict_file_block *all_blocks;
47 struct Dict_file_block *free_list;
48 struct Dict_file_block **hash_array;
50 struct Dict_file_block *lru_back, *lru_front;
58 typedef struct Dict_struct {
60 struct Dict_head head;
63 int dict_bf_readp (Dict_BFile bf, int no, void **bufp);
64 int dict_bf_newp (Dict_BFile bf, int no, void **bufp);
65 int dict_bf_touch (Dict_BFile bf, int no);
66 void dict_bf_flush_blocks (Dict_BFile bf, int no_to_flush);
67 Dict_BFile dict_bf_open (const char *name, int block_size, int cache, int rw);
68 int dict_bf_close (Dict_BFile dbf);
69 #define DICT_MAGIC "dict00"
71 typedef int Dict_info;
73 #define DICT_PAGESIZE 8192
75 Dict dict_open (const char *name, int cache, int rw);
76 int dict_close (Dict dict);
77 int dict_insert (Dict dict, const Dict_char *p, void *userinfo);
78 int dict_lookup (Dict dict, Dict_char *p);
79 int dict_strcmp (const Dict_char *s1, const Dict_char *s2);
80 int dict_strlen (const Dict_char *s);
83 #define DICT_type(x) 0[(Dict_ptr*) x]
84 #define DICT_backptr(x) 1[(Dict_ptr*) x]
85 #define DICT_nextptr(x) 2[(Dict_ptr*) x]
86 #define DICT_nodir(x) 0[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
87 #define DICT_size(x) 1[(short*)((char*)(x)+3*sizeof(Dict_ptr))]
88 #define DICT_infoffset (3*sizeof(Dict_ptr)+2*sizeof(short))
90 #define DICT_to_str(x) sizeof(Dict_info)+sizeof(Dict_ptr)
94 backptr pointer to parent
95 nextptr pointer to next page (if any)
97 size size of strings,info,ptr entries