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/* This file is part of the Zebra server.
Copyright (C) Index Data
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 this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include "dict-p.h"
void dict_clean(Dict dict)
{
int page_size = dict->head.page_size;
void *head_buf;
int compact_flag = dict->head.compact_flag;
memset(dict->head.magic_str, 0, sizeof(dict->head.magic_str));
strcpy(dict->head.magic_str, DICT_MAGIC);
dict->head.last = 1;
dict->head.root = 0;
dict->head.freelist = 0;
dict->head.page_size = page_size;
dict->head.compact_flag = compact_flag;
/* create header with information (page 0) */
if (dict->rw)
dict_bf_newp(dict->dbf, 0, &head_buf, page_size);
}
Dict dict_open(BFiles bfs, const char *name, int cache, int rw,
int compact_flag, int page_size)
{
Dict dict;
void *head_buf;
dict = (Dict) xmalloc(sizeof(*dict));
if (cache < 5)
cache = 5;
dict->grep_cmap = NULL;
page_size = DICT_DEFAULT_PAGESIZE;
if (page_size < 2048)
{
yaz_log(YLOG_WARN, "Page size for dict %s %d<2048. Set to 2048",
name, page_size);
page_size = 2048;
}
dict->dbf = dict_bf_open(bfs, name, page_size, cache, rw);
dict->rw = rw;
dict->no_split = 0;
dict->no_insert = 0;
dict->no_lookup = 0;
if(!dict->dbf)
{
yaz_log(YLOG_WARN, "Cannot open `%s'", name);
xfree(dict);
return NULL;
}
if (dict_bf_readp(dict->dbf, 0, &head_buf) <= 0)
{
dict->head.page_size = page_size;
dict->head.compact_flag = compact_flag;
dict_clean(dict);
}
else /* header was there, check magic and page size */
{
memcpy(&dict->head, head_buf, sizeof(dict->head));
if (strcmp(dict->head.magic_str, DICT_MAGIC))
{
yaz_log(YLOG_WARN, "Bad magic of `%s'", name);
dict_bf_close(dict->dbf);
xfree(dict);
return 0;
}
if (dict->head.page_size != page_size)
{
yaz_log(YLOG_WARN, "Page size for existing dict %s is %d. Current is %d",
name, dict->head.page_size, page_size);
}
}
if (dict->head.compact_flag)
dict_bf_compact(dict->dbf);
return dict;
}
int dict_strcmp(const Dict_char *s1, const Dict_char *s2)
{
return strcmp((const char *) s1, (const char *) s2);
}
int dict_strncmp(const Dict_char *s1, const Dict_char *s2, size_t n)
{
return strncmp((const char *) s1, (const char *) s2, n);
}
int dict_strlen(const Dict_char *s)
{
return strlen((const char *) s);
}
zint dict_get_no_lookup(Dict dict)
{
return dict->no_lookup;
}
zint dict_get_no_insert(Dict dict)
{
return dict->no_insert;
}
zint dict_get_no_split(Dict dict)
{
return dict->no_split;
}
/*
* Local variables:
* c-basic-offset: 4
* c-file-style: "Stroustrup"
* indent-tabs-mode: nil
* End:
* vim: shiftwidth=4 tabstop=8 expandtab
*/
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