mirror of
https://https.git.savannah.gnu.org/git/findutils.git
synced 2026-01-26 15:39:06 +00:00
53 lines
1.9 KiB
C
53 lines
1.9 KiB
C
/* locatedb.h -- declarations for the locate database
|
|
Copyright (C) 1994 Free Software Foundation, Inc.
|
|
|
|
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, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
|
|
USA.
|
|
*/
|
|
|
|
#ifndef _LOCATEDB_H
|
|
#define _LOCATEDB_H 1
|
|
|
|
/* The magic string at the start of a locate database, to make sure
|
|
it's in the right format. The 02 is the database format version number.
|
|
This string has the same format as a database entry, but you can't
|
|
concatenate databases even if you remove it, since the differential count
|
|
in the first entry of the second database will be wrong. */
|
|
#define LOCATEDB_MAGIC "\0LOCATE02"
|
|
|
|
/* Common-prefix length differences in the ranges
|
|
0..127, -127..-1 (0x00..0x7f, 0x81..0xff) fit into one byte.
|
|
This value (which is -128) indicates that the difference is
|
|
too large to fit into one byte, and a two-byte integer follows. */
|
|
#define LOCATEDB_ESCAPE 0x80
|
|
|
|
/* These are used for old, bigram-encoded databases: */
|
|
|
|
/* Means the differential count follows in a 2-byte int instead. */
|
|
#define LOCATEDB_OLD_ESCAPE 30
|
|
|
|
/* Offset added to differential counts to encode them as positive numbers. */
|
|
#define LOCATEDB_OLD_OFFSET 14
|
|
|
|
# ifndef PARAMS
|
|
# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
|
|
# define PARAMS(Args) Args
|
|
# else
|
|
# define PARAMS(Args) ()
|
|
# endif
|
|
# endif
|
|
|
|
#endif /* !_LOCATEDB_H */
|