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/* $Id: hash.h,v 1.18 2005/01/18 06:30:23 reinelt Exp $
*
* hashes (associative arrays)
*
* Copyright (C) 2003 Michael Reinelt <reinelt@eunet.at>
* Copyright (C) 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
*
* This file is part of LCD4Linux.
*
* LCD4Linux 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.
*
* LCD4Linux 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*
*
* $Log: hash.h,v $
* Revision 1.18 2005/01/18 06:30:23 reinelt
* added (C) to all copyright statements
*
* Revision 1.17 2004/06/26 12:04:59 reinelt
*
* uh-oh... the last CVS log message messed up things a lot...
*
* Revision 1.16 2004/06/26 09:27:21 reinelt
*
* added '-W' to CFLAGS
* changed all C++ comments to C ones
* cleaned up a lot of signed/unsigned mistakes
*
* Revision 1.15 2004/06/20 10:09:56 reinelt
*
* 'const'ified the whole source
*
* Revision 1.14 2004/06/17 06:23:43 reinelt
*
* hash handling rewritten to solve performance issues
*
* Revision 1.13 2004/06/13 01:12:52 reinelt
*
* debug widgets changed (thanks to Andy Baxter)
*
* Revision 1.12 2004/06/01 06:45:30 reinelt
*
* some Fixme's processed
* documented some code
*
* Revision 1.11 2004/03/11 06:39:59 reinelt
* big patch from Martin:
* - reuse filehandles
* - memory leaks fixed
* - earlier busy-flag checking with HD44780
* - reuse memory for strings in RESULT and hash
* - netdev_fast to wavid time-consuming regex
*
* Revision 1.10 2004/03/03 04:44:16 reinelt
* changes (cosmetics?) to the big patch from Martin
* hash patch un-applied
*
* Revision 1.9 2004/03/03 03:47:04 reinelt
* big patch from Martin Hejl:
* - use qprintf() where appropriate
* - save CPU cycles on gettimeofday()
* - add quit() functions to free allocated memory
* - fixed lots of memory leaks
*
* Revision 1.8 2004/02/27 06:07:55 reinelt
* hash improvements from Martin
*
* Revision 1.7 2004/01/21 14:29:03 reinelt
* new helper 'hash_get_regex' which delivers the sum over regex matched items
* new function 'disk()' which uses this regex matching
*
* Revision 1.6 2004/01/21 10:48:17 reinelt
* hash_age function added
*
* Revision 1.5 2004/01/18 09:01:45 reinelt
* /proc/stat parsing finished
*
* Revision 1.4 2004/01/16 11:12:26 reinelt
* some bugs in plugin_xmms fixed, parsing moved to own function
* plugin_proc_stat nearly finished
*
* Revision 1.3 2004/01/16 07:26:25 reinelt
* moved various /proc parsing to own functions
* made some progress with /proc/stat parsing
*
* Revision 1.2 2004/01/16 05:04:53 reinelt
* started plugin proc_stat which should parse /proc/stat
* which again is a paint in the a**
* thinking over implementation methods of delta functions
* (CPU load, ...)
*
* Revision 1.1 2004/01/13 10:03:01 reinelt
* new util 'hash' for associative arrays
* new plugin 'cpuinfo'
*
*/
#ifndef _HASH_H_
#define _HASH_H_
/* struct timeval */
#include <sys/time.h>
typedef struct {
int size;
char *value;
struct timeval timestamp;
} HASH_SLOT;
typedef struct {
char *key;
int val;
} HASH_COLUMN;
typedef struct {
char *key;
int index;
int nSlot;
HASH_SLOT *Slot;
} HASH_ITEM;
typedef struct {
int sorted;
struct timeval timestamp;
int nItems;
HASH_ITEM *Items;
int nColumns;
HASH_COLUMN *Columns;
char *delimiter;
} HASH;
void hash_create (HASH *Hash);
int hash_age (HASH *Hash, const char *key);
void hash_set_column (HASH *Hash, const int number, const char *column);
void hash_set_delimiter (HASH *Hash, const char *delimiter);
char *hash_get (HASH *Hash, const char *key, const char *column);
double hash_get_delta (HASH *Hash, const char *key, const char *column, const int delay);
double hash_get_regex (HASH *Hash, const char *key, const char *column, const int delay);
void hash_put (HASH *Hash, const char *key, const char *value);
void hash_put_delta (HASH *Hash, const char *key, const char *value);
void hash_destroy (HASH *Hash);
#endif
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