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/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
This program 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 of the License, or
(at your option) any later version.
This program 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
/* Written by Sergei A. Golubchik, who has a shared copyright to this code */
#include "ftdefs.h"
typedef struct st_ft_stopwords {
const char * pos;
uint len;
} FT_STOPWORD;
static TREE *stopwords3=NULL;
static int FT_STOPWORD_cmp(void* cmp_arg __attribute__((unused)),
FT_STOPWORD *w1, FT_STOPWORD *w2)
{
return _mi_compare_text(default_charset_info,
(uchar *)w1->pos,w1->len,
(uchar *)w2->pos,w2->len,0);
}
int ft_init_stopwords(const char **sws)
{
FT_STOPWORD sw;
if(!stopwords3)
{
if(!(stopwords3=(TREE *)my_malloc(sizeof(TREE),MYF(0)))) return -1;
init_tree(stopwords3,0,0,sizeof(FT_STOPWORD),(qsort_cmp2)&FT_STOPWORD_cmp,0,
NULL, NULL);
}
if(!sws) return 0;
for(;*sws;sws++)
{
if( (sw.len= (uint) strlen(sw.pos=*sws)) < ft_min_word_len) continue;
if(!tree_insert(stopwords3, &sw, 0))
{
delete_tree(stopwords3); /* purecov: inspected */
return -1; /* purecov: inspected */
}
}
return 0;
}
int is_stopword(char *word, uint len)
{
FT_STOPWORD sw;
sw.pos=word;
sw.len=len;
return tree_search(stopwords3,&sw) != NULL;
}
void ft_free_stopwords()
{
if (stopwords3)
{
delete_tree(stopwords3); /* purecov: inspected */
my_free((char*) stopwords3,MYF(0));
stopwords3=0;
}
}
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