113 lines
3.6 KiB
C
113 lines
3.6 KiB
C
/*
|
|
* CDE - Common Desktop Environment
|
|
*
|
|
* Copyright (c) 1993-2012, The Open Group. All rights reserved.
|
|
*
|
|
* These libraries and programs are free software; you can
|
|
* redistribute them and/or modify them under the terms of the GNU
|
|
* Lesser General Public License as published by the Free Software
|
|
* Foundation; either version 2 of the License, or (at your option)
|
|
* any later version.
|
|
*
|
|
* These libraries and programs are distributed in the hope that
|
|
* they will be useful, but WITHOUT ANY WARRANTY; without even the
|
|
* implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
* PURPOSE. See the GNU Lesser General Public License for more
|
|
* details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with these librararies and programs; if not, write
|
|
* to the Free Software Foundation, Inc., 51 Franklin Street, Fifth
|
|
* Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
/* $XConsortium: keydel.c /main/2 1996/05/09 04:08:58 drk $ */
|
|
/*
|
|
* COMPONENT_NAME: austext
|
|
*
|
|
* FUNCTIONS: d_keydel
|
|
*
|
|
* ORIGINS: 157
|
|
*
|
|
* OBJECT CODE ONLY SOURCE MATERIALS
|
|
*/
|
|
/*-----------------------------------------------------------------------
|
|
keydel.c -- db_VISTA key deletion module.
|
|
|
|
(C) Copyright 1987 by Raima Corporation.
|
|
-----------------------------------------------------------------------*/
|
|
|
|
/* ********************** EDIT HISTORY *******************************
|
|
|
|
SCR DATE INI DESCRIPTION
|
|
----- --------- --- -----------------------------------------------------
|
|
158 15-JUN-88 RSC added flag to key_bldcom - always compliment compound keys
|
|
04-Aug-88 RTK MULTI_TASK changes
|
|
|
|
*/
|
|
#include <stdio.h>
|
|
#include "vista.h"
|
|
#include "dbtype.h"
|
|
|
|
#define FALSE 0
|
|
#define TRUE 1
|
|
|
|
/* Delete optional key value
|
|
*/
|
|
d_keydel(field TASK_PARM DBN_PARM)
|
|
long field; /* key field constant */
|
|
TASK_DECL
|
|
DBN_DECL /* database number */
|
|
{
|
|
int fld; /* field number */
|
|
int rec, rn; /* record type of current record */
|
|
char FAR *rptr; /* pointer to current record */
|
|
CONST char FAR *fptr; /* pointer to field contents */
|
|
char ckey[256]; /* compound key data */
|
|
int stat;
|
|
RECORD_ENTRY FAR *rec_ptr;
|
|
FIELD_ENTRY FAR *fld_ptr;
|
|
|
|
DB_ENTER(DB_ID TASK_ID LOCK_SET(RECORD_IO));
|
|
|
|
if (nfld_check(field, &rec, &fld, (RECORD_ENTRY FAR * FAR *)&rec_ptr, (FIELD_ENTRY FAR * FAR *)&fld_ptr) != S_OKAY)
|
|
RETURN( db_status );
|
|
|
|
/* ensure current record is valid for this field */
|
|
d_crtype(&rn TASK_PARM DBN_PARM);
|
|
|
|
if (rec != NUM2INT(rn - RECMARK, rt_offset))
|
|
RETURN( dberr(S_BADFIELD) );
|
|
|
|
/* ensure field is an optional key field */
|
|
if ( ! (fld_ptr->fd_flags & OPTKEYMASK) )
|
|
RETURN( dberr(S_NOTOPTKEY) );
|
|
|
|
/* read current record */
|
|
if ( (stat = dio_read(curr_rec, (char FAR * FAR *)&rptr, PGHOLD)) == S_OKAY ) {
|
|
/* Make sure that the key has been stored */
|
|
if ( r_tstopt( fld_ptr, rptr ) == S_OKAY ) {
|
|
if ( dio_release( curr_rec ) != S_OKAY )
|
|
RETURN( db_status );
|
|
RETURN( db_status = S_NOTFOUND );
|
|
}
|
|
if ( fld_ptr->fd_type == COMKEY ) {
|
|
key_bldcom(fld, rptr + rec_ptr->rt_data, ckey, TRUE);
|
|
fptr = ckey;
|
|
}
|
|
else
|
|
fptr = rptr + fld_ptr->fd_ptr;
|
|
|
|
/* delete key from value in current record */
|
|
stat = key_delete(fld, fptr, curr_rec);
|
|
|
|
/* Clear the optional key flag in the record */
|
|
if ( stat == S_OKAY )
|
|
stat = r_clropt( fld_ptr, rptr );
|
|
|
|
/* The data record has been updated */
|
|
dio_write(curr_rec, rptr, PGFREE);
|
|
}
|
|
RETURN( db_status = stat );
|
|
}
|
|
/* vpp -nOS2 -dUNIX -nBSD -nVANILLA_BSD -nVMS -nMEMLOCK -nWINDOWS -nFAR_ALLOC -f/usr/users/master/config/nonwin keydel.c */
|