-/* $Id: dict.h,v 1.34 2004-11-19 10:26:55 heikki Exp $
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002,2003,2004
- Index Data Aps
-
-This file is part of the Zebra server.
-
-Zebra is free software; you can redistribute it and/or modify it under
-the terms of the GNU General Public License as published by the Free
-Software Foundation; either version 2, or (at your option) any later
-version.
-
-Zebra is distributed in the hope that it will be useful, but WITHOUT ANY
-WARRANTY; without even the implied warranty of MERCHANTABILITY or
-FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
-for more details.
-
-You should have received a copy of the GNU General Public License
-along with Zebra; see the file LICENSE.zebra. If not, write to the
-Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA.
-*/
-
-
-
-#ifndef DICT_H
-#define DICT_H
-
-#include <bfile.h>
-#include <yaz/ylog.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-typedef unsigned Dict_ptr;
-typedef unsigned char Dict_char;
-
-struct Dict_head {
- char magic_str[8];
- int page_size;
- int compact_flag;
- Dict_ptr root, last, freelist;
-};
-
-struct Dict_file_block
-{
- struct Dict_file_block *h_next, **h_prev;
- struct Dict_file_block *lru_next, *lru_prev;
- void *data;
- int dirty;
- int no;
- int nbytes;
-};
-
-typedef struct Dict_file_struct
-{
- int cache;
- BFile bf;
-
- struct Dict_file_block *all_blocks;
- struct Dict_file_block *free_list;
- struct Dict_file_block **hash_array;
-
- struct Dict_file_block *lru_back, *lru_front;
- int hash_size;
- void *all_data;
-
- int block_size;
- int hits;
- int misses;
- int compact_flag;
-} *Dict_BFile;
-
-typedef struct Dict_struct {
- int rw;
- Dict_BFile dbf;
- const char **(*grep_cmap)(void *vp, const char **from, int len);
- void *grep_cmap_data;
- struct Dict_head head;
-} *Dict;
-
-#define DICT_MAGIC "dict01"
-
-#define DICT_DEFAULT_PAGESIZE 4096
-
-int dict_bf_readp (Dict_BFile bf, int no, void **bufp);
-int dict_bf_newp (Dict_BFile bf, int no, void **bufp, int nbytes);
-int dict_bf_touch (Dict_BFile bf, int no);
-void dict_bf_flush_blocks (Dict_BFile bf, int no_to_flush);
-Dict_BFile dict_bf_open (BFiles bfs, const char *name, int block_size,
- int cache, int rw);
-int dict_bf_close (Dict_BFile dbf);
-void dict_bf_compact (Dict_BFile dbf);
-
-Dict dict_open (BFiles bfs, const char *name, int cache, int rw,
- int compact_flag, int page_size);
-int dict_close (Dict dict);
-int dict_insert (Dict dict, const char *p, int userlen, void *userinfo);
-int dict_delete (Dict dict, const char *p);
-int dict_delete_subtree (Dict dict, const char *p, void *client,
- int (*f)(const char *info, void *client));
-char *dict_lookup (Dict dict, const char *p);
-int dict_lookup_ec (Dict dict, char *p, int range,
- int (*f)(char *name));
-int dict_lookup_grep (Dict dict, const char *p, int range, void *client,
- int *max_pos, int init_pos,
- int (*f)(char *name, const char *info,
- void *client));
-int dict_strcmp (const Dict_char *s1, const Dict_char *s2);
-int dict_strncmp (const Dict_char *s1, const Dict_char *s2, size_t n);
-int dict_strlen (const Dict_char *s);
-int dict_scan (Dict dict, char *str,
- int *before, int *after, void *client,
- int (*f)(char *name, const char *info, int pos,
- void *client));
-
-void dict_grep_cmap (Dict dict, void *vp,
- const char **(*cmap)(void *vp,
- const char **from, int len));
-int dict_copy_compact (BFiles bfs, const char *from, const char *to);
-
-
-#define DICT_EOS 0
-#define DICT_type(x) 0[(Dict_ptr*) x]
-#define DICT_backptr(x) 1[(Dict_ptr*) x]
-#define DICT_bsize(x) 2[(short*)((char*)(x)+2*sizeof(Dict_ptr))]
-#define DICT_nodir(x) 0[(short*)((char*)(x)+2*sizeof(Dict_ptr))]
-#define DICT_size(x) 1[(short*)((char*)(x)+2*sizeof(Dict_ptr))]
-#define DICT_infoffset (2*sizeof(Dict_ptr)+3*sizeof(short))
-#define DICT_xxxxpagesize(x) ((x)->head.page_size)
-
-#define DICT_to_str(x) sizeof(Dict_info)+sizeof(Dict_ptr)
-
-/*
- type type of page
- backptr pointer to parent
- nextptr pointer to next page (if any)
- nodir no of words
- size size of strings,info,ptr entries
-
- dir[0..nodir-1]
- ptr,info,string
- */
-#ifdef __cplusplus
-}
-#endif
-
-
-#endif