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harbour-core/harbour/source/vm/hashfunc.c
Przemyslaw Czerpak dafaea3cbe 2007-10-06 13:55 UTC+0200 Przemyslaw Czerpak (druzus/at/priv.onet.pl) 
* harbour/source/vm/hashes.c
    * set AUTOADD for assign operation by default in new arrays
    * removed last HB_COMPAT_XHB

  * harbour/source/vm/hashfunc.c
    * change HB_HAUTOADD( hHash, .T. ) to set AUTOADD for assign only
      when no default value is set

   Above are minimal modifications to make default Harbour behavior
   more similar to other languages f.e. PHP or xHarbour. Other
   modifications will depend on group decision.
2007-10-06 11:56:02 +00:00

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/*
* $Id$
*/
/*
* Harbour Project source code:
* The Hash tables API (PRG level)
*
* Copyright 2007 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
* www - http://www.harbour-project.org
*
* 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 software; see the file COPYING. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
*
* As a special exception, the Harbour Project gives permission for
* additional uses of the text contained in its release of Harbour.
*
* The exception is that, if you link the Harbour libraries with other
* files to produce an executable, this does not by itself cause the
* resulting executable to be covered by the GNU General Public License.
* Your use of that executable is in no way restricted on account of
* linking the Harbour library code into it.
*
* This exception does not however invalidate any other reasons why
* the executable file might be covered by the GNU General Public License.
*
* This exception applies only to the code released by the Harbour
* Project under the name Harbour. If you copy code from other
* Harbour Project or Free Software Foundation releases into a copy of
* Harbour, as the General Public License permits, the exception does
* not apply to the code that you add in this way. To avoid misleading
* anyone as to the status of such modified files, you must delete
* this exception notice from them.
*
* If you write modifications of your own for Harbour, it is your choice
* whether to permit this exception to apply to your modifications.
* If you do not wish that, delete this exception notice.
*
*/
#include "hbvmopt.h"
#include "hbapi.h"
#include "hbapiitm.h"
#include "hbapierr.h"
#include "hbapilng.h"
#include "hbvm.h"
#include "hbstack.h"
HB_FUNC( HB_HASH )
{
int iPCount = hb_pcount(), iParam;
if( iPCount & 1 )
hb_errRT_BASE( EG_BOUND, 1131, NULL, hb_langDGetErrorDesc( EG_ARRDIMENSION ), HB_ERR_ARGS_BASEPARAMS );
else
{
PHB_ITEM pHash = hb_hashNew( NULL );
for( iParam = 1; iParam <= iPCount; iParam += 2 )
{
PHB_ITEM pKey = hb_param( iParam, HB_IT_HASHKEY );
PHB_ITEM pValue = hb_param( iParam + 1, HB_IT_ANY );
if( pKey )
hb_hashAdd( pHash, pKey, pValue );
else
{
hb_errRT_BASE( EG_BOUND, 1133, NULL, hb_langDGetErrorDesc( EG_ARRASSIGN ), pValue ? 3 : 2, pHash, hb_paramError( iParam ), pValue );
break;
}
}
hb_itemReturnRelease( pHash );
}
}
HB_FUNC( HB_HHASKEY )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pKey = hb_param( 2, HB_IT_HASHKEY );
if( pHash && pKey )
hb_retl( hb_hashScan( pHash, pKey, NULL ) );
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HPOS )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pKey = hb_param( 2, HB_IT_HASHKEY );
if( pHash && pKey )
{
ULONG ulPos;
hb_hashScan( pHash, pKey, &ulPos );
hb_retnint( ulPos );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HGET )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pKey = hb_param( 2, HB_IT_HASHKEY );
if( pHash && pKey )
{
PHB_ITEM pDest = hb_hashGetItemPtr( pHash, pKey, HB_HASH_AUTOADD_ACCESS );
if( pDest )
hb_itemReturn( HB_IS_BYREF( pDest ) ? hb_itemUnRef( pDest ) : pDest );
else
hb_errRT_BASE( EG_BOUND, 1132, NULL, hb_langDGetErrorDesc( EG_ARRACCESS ), 2, pHash, pKey );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HSET )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pKey = hb_param( 2, HB_IT_HASHKEY );
PHB_ITEM pValue = hb_param( 3, HB_IT_ANY );
if( pHash && pKey && pValue )
hb_hashAdd( pHash, pKey, pValue );
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HDEL )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pKey = hb_param( 2, HB_IT_HASHKEY );
if( pHash && pKey )
{
if( ! hb_hashDel( pHash, pKey ) )
hb_errRT_BASE( EG_BOUND, 1133, NULL, hb_langDGetErrorDesc( EG_ARRASSIGN ), 2, pHash, pKey );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HKEYAT )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pPos = hb_param( 2, HB_IT_NUMERIC );
if( pHash && pPos )
{
PHB_ITEM pKey = hb_hashGetKeyAt( pHash, hb_itemGetNL( pPos ) );
if( pKey )
hb_itemReturn( pKey );
else
hb_errRT_BASE( EG_BOUND, 1187, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HVALUEAT )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pPos = hb_param( 2, HB_IT_NUMERIC );
PHB_ITEM pValue = hb_param( 3, HB_IT_ANY );
if( pHash && pPos )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, hb_itemGetNL( pPos ) );
if( pItem )
{
if( pValue )
hb_itemCopy( pItem, pValue );
else
pValue = pItem;
hb_itemReturn( pValue );
}
else
hb_errRT_BASE( EG_BOUND, 1187, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HPAIRAT )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pPos = hb_param( 2, HB_IT_NUMERIC );
if( pHash && pPos )
{
PHB_ITEM pKey = hb_hashGetKeyAt( pHash, hb_itemGetNL( pPos ) );
PHB_ITEM pValue = hb_hashGetValueAt( pHash, hb_itemGetNL( pPos ) );
if( pKey && pValue )
{
PHB_ITEM pDstKey = hb_param( 3, HB_IT_BYREF );
PHB_ITEM pDstVal = hb_param( 4, HB_IT_BYREF );
if( pDstKey && pDstVal )
{
hb_itemCopy( pDstKey, pKey );
hb_itemCopy( pDstVal, pValue );
}
else
{
PHB_ITEM pResult = hb_itemArrayNew( 2 );
hb_arraySet( pResult, 1, pKey );
hb_arraySet( pResult, 2, pValue );
hb_itemReturnRelease( pResult );
}
}
else
hb_errRT_BASE( EG_BOUND, 1187, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HDELAT )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pPos = hb_param( 2, HB_IT_NUMERIC );
if( pHash && pPos )
{
if( ! hb_hashDelAt( pHash, hb_itemGetNL( pPos ) ) )
hb_errRT_BASE( EG_BOUND, 1133, NULL, hb_langDGetErrorDesc( EG_ARRASSIGN ), 2, pHash, pPos );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HKEYS )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
if( pHash )
hb_itemReturnRelease( hb_hashGetKeys( pHash ) );
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HVALUES )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
if( pHash )
hb_itemReturnRelease( hb_hashGetValues( pHash ) );
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HFILL )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pValue = hb_param( 2, HB_IT_ANY );
if( pHash && pValue )
{
PHB_ITEM pDest;
ULONG ulPos = 0;
while( ( pDest = hb_hashGetValueAt( pHash, ++ulPos ) ) != NULL )
hb_itemCopy( pDest, pValue );
hb_itemReturn( pHash );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HCLONE )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
if( pHash )
hb_itemReturnRelease( hb_hashClone( pHash ) );
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HCOPY )
{
PHB_ITEM pSource = hb_param( 1, HB_IT_HASH );
PHB_ITEM pDest = hb_param( 2, HB_IT_HASH );
if( pSource && pDest )
{
ULONG ulLen = hb_hashLen( pSource ), ulStart, ulCount;
ulStart = hb_parnl( 3 );
if( !ulStart )
++ulStart;
ulCount = ISNUM( 4 ) ? ( ULONG ) hb_parnl( 4 ) : ulLen - ulStart + 1;
while( ulCount-- )
{
PHB_ITEM pKey = hb_hashGetKeyAt( pSource, ulStart );
PHB_ITEM pValue = hb_hashGetValueAt( pSource, ulStart );
if( pKey && pValue )
hb_hashAdd( pDest, pKey, pValue );
else
break;
++ulStart;
}
hb_itemReturn( pDest );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HMERGE )
{
PHB_ITEM pDest = hb_param( 1, HB_IT_HASH );
PHB_ITEM pSource = hb_param( 2, HB_IT_HASH );
PHB_ITEM pAction = hb_param( 3, HB_IT_BLOCK | HB_IT_NUMERIC );
if( pDest && pSource )
{
if( pAction && HB_IS_BLOCK( pAction ) )
{
ULONG ulLen = hb_hashLen( pSource ), ulPos = 0;
while( ++ulPos <= ulLen )
{
PHB_ITEM pKey = hb_hashGetKeyAt( pSource, ulPos );
PHB_ITEM pValue = hb_hashGetValueAt( pSource, ulPos );
if( pKey && pValue )
{
hb_vmPushEvalSym();
hb_vmPush( pAction );
hb_vmPush( pKey );
hb_vmPush( pValue );
hb_vmPushLong( ulPos );
hb_vmSend( 3 );
if( HB_IS_LOGICAL( hb_stackReturnItem() ) &&
hb_itemGetL( hb_stackReturnItem() ) )
hb_hashAdd( pDest, pKey, pValue );
}
else
break;
}
}
else
hb_hashJoin( pDest, pSource, pAction ? hb_itemGetNI( pAction ) : HB_HASH_UNION );
hb_itemReturn( pDest );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HEVAL )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pBlock = hb_param( 2, HB_IT_BLOCK );
if( pHash && pBlock )
{
ULONG ulLen = hb_hashLen( pHash ), ulStart, ulCount;
ulStart = hb_parnl( 3 );
if( !ulStart )
++ulStart;
ulCount = ISNUM( 4 ) ? ( ULONG ) hb_parnl( 4 ) : ulLen - ulStart + 1;
while( ulCount-- )
{
PHB_ITEM pKey = hb_hashGetKeyAt( pHash, ulStart );
PHB_ITEM pValue = hb_hashGetValueAt( pHash, ulStart );
if( pKey && pValue )
{
hb_vmPushEvalSym();
hb_vmPush( pBlock );
hb_vmPush( pKey );
hb_vmPush( pValue );
hb_vmPushLong( ulStart );
hb_vmSend( 3 );
}
else
break;
++ulStart;
}
hb_itemReturn( pHash );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HSCAN )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pValue = hb_param( 2, HB_IT_ANY );
if( pHash && pValue )
{
BOOL fExact = hb_parl( 5 ), fFound = FALSE;
ULONG ulLen = hb_hashLen( pHash ), ulStart, ulCount;
ulStart = hb_parnl( 3 );
if( !ulStart )
++ulStart;
ulCount = ISNUM( 4 ) ? ( ULONG ) hb_parnl( 4 ) : ulLen - ulStart + 1;
if( HB_IS_BLOCK( pValue ) )
{
while( ulCount-- )
{
PHB_ITEM pKey = hb_hashGetKeyAt( pHash, ulStart );
PHB_ITEM pVal = hb_hashGetValueAt( pHash, ulStart );
if( pKey && pValue )
{
hb_vmPushEvalSym();
hb_vmPush( pValue );
hb_vmPush( pKey );
hb_vmPush( pVal );
hb_vmPushLong( ulStart );
hb_vmSend( 3 );
if( HB_IS_LOGICAL( hb_stackReturnItem() ) &&
hb_itemGetL( hb_stackReturnItem() ) )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( HB_IS_STRING( pValue ) )
{
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_STRING( pItem ) && hb_itemStrCmp( pItem, pValue, fExact ) == 0 )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( HB_IS_NUMERIC( pValue ) )
{
double dValue = hb_itemGetND( pValue );
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_NUMERIC( pItem ) && hb_itemGetND( pItem ) == dValue )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( HB_IS_DATE( pValue ) )
{
long lValue = hb_itemGetDL( pValue );
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_DATE( pItem ) && hb_itemGetDL( pItem ) == lValue )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( HB_IS_LOGICAL( pValue ) )
{
BOOL fValue = hb_itemGetDL( pValue );
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_LOGICAL( pItem ) && hb_itemGetL( pItem ) == fValue )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( HB_IS_NIL( pValue ) )
{
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_NIL( pItem ) )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( HB_IS_POINTER( pValue ) )
{
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_POINTER( pItem ) &&
pItem->item.asPointer.value == pValue->item.asPointer.value )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( fExact && HB_IS_ARRAY( pValue ) )
{
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_ARRAY( pItem ) &&
pItem->item.asArray.value == pValue->item.asArray.value )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
else if( fExact && HB_IS_HASH( pValue ) )
{
while( ulCount-- )
{
PHB_ITEM pItem = hb_hashGetValueAt( pHash, ulStart );
if( pItem )
{
if( HB_IS_HASH( pItem ) &&
pItem->item.asHash.value == pValue->item.asHash.value )
{
fFound = TRUE;
break;
}
}
else
break;
++ulStart;
}
}
hb_retnint( fFound ? ulStart : 0 );
}
else
hb_errRT_BASE( EG_ARG, 1123, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HCASEMATCH )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pValue = hb_param( 2, HB_IT_LOGICAL );
if( pHash )
{
hb_retl( ( hb_hashGetFlags( pHash ) & HB_HASH_IGNORECASE ) == 0 );
if( pValue )
{
if( hb_itemGetL( pValue ) )
hb_hashClearFlags( pHash, HB_HASH_IGNORECASE );
else
hb_hashSetFlags( pHash, HB_HASH_IGNORECASE );
}
}
else
hb_errRT_BASE( EG_ARG, 2017, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HAUTOADD )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pValue = hb_param( 2, HB_IT_LOGICAL | HB_IT_NUMERIC );
if( pHash )
{
int iOldFlags = hb_hashGetFlags( pHash ) & HB_HASH_AUTOADD_MASK;
hb_retni( iOldFlags );
if( pValue )
{
if( HB_IS_LOGICAL( pValue ) )
{
if( hb_itemGetL( pValue ) )
hb_hashSetFlags( pHash, hb_hashGetDefault( pHash ) ?
HB_HASH_AUTOADD_ALWAYS : HB_HASH_AUTOADD_ASSIGN );
else if( iOldFlags )
hb_hashClearFlags( pHash, iOldFlags );
}
else
{
int iNewFlags = hb_itemGetNI( pValue );
if( ( iNewFlags | iOldFlags ) != iNewFlags )
hb_hashClearFlags( pHash, iOldFlags );
if( iNewFlags )
hb_hashSetFlags( pHash, iNewFlags );
}
}
}
else
hb_errRT_BASE( EG_ARG, 2017, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HALLOCATE )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
PHB_ITEM pValue = hb_param( 2, HB_IT_NUMERIC );
if( pHash && pValue )
{
LONG lMem = hb_itemGetNL( pValue );
if( lMem >= 0 )
hb_hashPreallocate( pHash, lMem );
}
else
hb_errRT_BASE( EG_ARG, 2017, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HDEFAULT )
{
PHB_ITEM pHash = hb_param( 1, HB_IT_HASH );
if( pHash )
{
hb_itemReturn( hb_hashGetDefault( pHash ) );
if( hb_pcount() > 1 )
hb_hashSetDefault( pHash, hb_param( 2, HB_IT_ANY ) );
}
else
hb_errRT_BASE( EG_ARG, 2017, NULL, &hb_errFuncName, HB_ERR_ARGS_BASEPARAMS );
}
HB_FUNC( HB_HSETAUTOADD ) { HB_FUNC_EXEC( HB_HAUTOADD ); hb_itemReturn( hb_param( 1, HB_IT_HASH ) ); }
HB_FUNC( HB_HSETCASEMATCH ) { HB_FUNC_EXEC( HB_HCASEMATCH ); hb_itemReturn( hb_param( 1, HB_IT_HASH ) ); }
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