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/* PROGRAM: eggsh
* FILE: $Header: /home/egg/src/RCS/storage.h,v 1.3 1998/12/31 22:11:05 ghn Exp $
* PURPOSE: Definitions for data storage functions
* AUTHOR: Greg Nelson
* DATE: 98-05-09
*
* REVISED:
* $Log: storage.h,v $
* Revision 1.3 1998/12/31 22:11:05 ghn
* Rev 5 code: includes multi-reg support, HTML, etc.
*
* Revision 1.2 1998/08/01 17:19:48 ghn
* Added ResetDatabase function.
*
* Revision 1.1 1998/07/21 11:35:10 ghn
* Initial revision
*
* Copyright 1998 - Greg Nelson
* Redistributable under the terms of the GNU Public Licence (GPL)
*/
typedef struct dbase {
FILE *fp;
int16 eggind;
char fn[256];
} DBRec;
/* The initialization provides a way to specify a format for the
database file names. If the argument is null, it uses a default
from the environment, or a compiled default. This string is used
as an argument to strftime(3) which replaces certain characters
with corresponding fields of the date and time. This provides an
automatic way of generating a logical new filename on a periodic
basis.
The other function of the initialization is to clear static
variable used to incrementally collect records for SaveRecord until
a complete packet is available for storage to disk. */
extern int32 InitStorage(char *path);
/* Save packet is the basic save function. It does not take a
filename, relying on the datafmt variable created during
initialization to generate an appropriate filename. The
date for the saved data is based on the timestamp of the packet's
first record. */
extern int32 SavePacket(EggCarton *cart);
/* Open database for reading, positioning to specified location.
If eggid is less than zero, it will load any packet. */
extern int32 OpenDatabase(DBRec *db, uint32 tindex, int16 eggid);
/* Close database */
extern int32 CloseDatabase(DBRec *db);
/* Reset database allows us to open same file name again. */
extern int32 ResetDatabase(DBRec *dbp);
/* Load next packet following a particular time index and egg id. If
eggid is less than zero, it will load any packet. This is
essentially a shortcut for getting one packet. */
extern int32 LoadPacket(uint32 tindex, int16 eggid, EggCarton *cart);
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