1 #ifndef FIELD_COMP_H_INCLUDED
2 #define FIELD_COMP_H_INCLUDED
3 /* Copyright (C) 2017 MariaDB Foundation
4 
5    This program is free software; you can redistribute it and/or modify
6    it under the terms of the GNU General Public License as published by
7    the Free Software Foundation; version 2 of the License.
8 
9    This program is distributed in the hope that it will be useful,
10    but WITHOUT ANY WARRANTY; without even the implied warranty of
11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
12    GNU General Public License for more details.
13 
14    You should have received a copy of the GNU General Public License
15    along with this program; if not, write to the Free Software
16    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA */
17 
18 
19 #define MAX_COMPRESSION_METHODS 16
20 
21 struct Compression_method
22 {
23   const char *name;
24   uint (*compress)(THD *thd, char *to, const char *from, uint length);
25   int (*uncompress)(String *to, const uchar *from, uint from_length,
26                     uint field_length);
27 };
28 
29 
30 extern Compression_method compression_methods[MAX_COMPRESSION_METHODS];
31 #define zlib_compression_method (&compression_methods[8])
32 
33 #endif
34