1 /* $Id: dict-p.h,v 1.7 2006-08-29 11:28:42 adam Exp $
2 Copyright (C) 1995-2006
5 This file is part of the Zebra server.
7 Zebra is free software; you can redistribute it and/or modify it under
8 the terms of the GNU General Public License as published by the Free
9 Software Foundation; either version 2, or (at your option) any later
12 Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
27 #include <yaz/xmalloc.h>
28 #include <idzebra/dict.h>
32 #define DICT_MAGIC "dict01"
34 #define DICT_DEFAULT_PAGESIZE 4096
36 typedef unsigned char Dict_char;
37 typedef unsigned Dict_ptr;
43 Dict_ptr root, last, freelist;
46 struct Dict_file_block
48 struct Dict_file_block *h_next, **h_prev;
49 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;
78 const char **(*grep_cmap)(void *vp, const char **from, int len);
80 struct Dict_head head;
83 int dict_bf_readp (Dict_BFile bf, int no, void **bufp);
84 int dict_bf_newp (Dict_BFile bf, int no, void **bufp, int nbytes);
85 int dict_bf_touch (Dict_BFile bf, int no);
86 void dict_bf_flush_blocks (Dict_BFile bf, int no_to_flush);
87 Dict_BFile dict_bf_open (BFiles bfs, const char *name, int block_size,
89 int dict_bf_close (Dict_BFile dbf);
90 void dict_bf_compact (Dict_BFile dbf);
92 int dict_strcmp (const Dict_char *s1, const Dict_char *s2);
94 int dict_strncmp (const Dict_char *s1, const Dict_char *s2, size_t n);
96 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_bsize(x) 2[(short*)((char*)(x)+2*sizeof(Dict_ptr))]
103 #define DICT_nodir(x) 0[(short*)((char*)(x)+2*sizeof(Dict_ptr))]
104 #define DICT_size(x) 1[(short*)((char*)(x)+2*sizeof(Dict_ptr))]
105 #define DICT_infoffset (2*sizeof(Dict_ptr)+3*sizeof(short))
106 #define DICT_xxxxpagesize(x) ((x)->head.page_size)
108 #define DICT_to_str(x) sizeof(Dict_info)+sizeof(Dict_ptr)
112 backptr pointer to parent
113 nextptr pointer to next page (if any)
115 size size of strings,info,ptr entries
127 * indent-tabs-mode: nil
129 * vim: shiftwidth=4 tabstop=8 expandtab