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
21struct 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
30extern Compression_method compression_methods[MAX_COMPRESSION_METHODS];
31#define zlib_compression_method (&compression_methods[8])
32
33#endif
34