1 files changed, 68 insertions, 0 deletions
diff --git a/myisam/ft_stopwords.c b/myisam/ft_stopwords.c
new file mode 100644
index 00000000000..f8fddc9d4bb
--- /dev/null
+++ b/myisam/ft_stopwords.c
@@ -0,0 +1,68 @@
+/* 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(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,sizeof(FT_STOPWORD),(qsort_cmp)&FT_STOPWORD_cmp,0,
+	      NULL);
+  }
+
+  if(!sws) return 0;
+
+  for(;*sws;sws++)
+  {
+    if( (sw.len=strlen(sw.pos=*sws)) < MIN_WORD_LEN) continue;
+    if(!tree_insert(stopwords3, &sw, 0))
+    {
+      delete_tree(stopwords3);
+      return -1;
+    }
+  }
+  return 0;
+}
+
+int is_stopword(char *word, uint len)
+{
+  FT_STOPWORD sw;
+  sw.pos=word;
+  sw.len=len;
+  return tree_search(stopwords3,&sw) != NULL;
+}
+