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harbour-core/harbour/source/vm/memvars.c
Viktor Szakats e569ecf8b4 2009-06-24 22:36 UTC+0200 Viktor Szakats (harbour.01 syenar.hu) 
* include/hbapi.h
  * include/hbapiitm.h
  * source/vm/itemapi.c
  * source/vm/arrays.c
  * source/vm/extend.c
    ; Started addition of 'const' keywords where applicable.
    * First pass:
      extern HB_EXPORT const char * hb_parc( int iParam );
      extern HB_EXPORT const char * hb_parcx( int iParam );
      extern HB_EXPORT const char * hb_itemGetCPtr( PHB_ITEM pItem );
      extern HB_EXPORT const char * hb_arrayGetCPtr( PHB_ITEM pArray, ULONG ulIndex );
    ; NOTE: This modification will break code in most compilers,
            especially in C++ mode.
            As a next steps source code will have to be modified
            according to this change. Be patient, don't report all
            errors to the developers. You can join the code cleanup.

  * source/vm/dynsym.c
  * source/vm/itemapi.c
  * source/vm/arrays.c
  * source/vm/memvars.c
  * source/vm/extend.c
  * source/vm/set.c
  * source/vm/classes.c
    * 'const's added to caller code.
2009-06-24 20:37:05 +00:00

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/*
* $Id$
*/
/*
* Harbour Project source code:
* Memvar (PRIVATE/PUBLIC) runtime support
*
* Copyright 1999 Ryszard Glab <rglab@imid.med.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.
*
*/
/*
* The following parts are Copyright of the individual authors.
* www - http://www.harbour-project.org
*
* Copyright 1999-2001 Viktor Szakats (harbour.01 syenar.hu)
* __MVSAVE()
* __MVRESTORE() (Thanks to Dave Pearson and Jo French for the original
* Clipper function (FReadMem()) to read .mem files)
*
* See COPYING for licensing terms.
*
*/
#include "hbvmopt.h"
#include "hbapi.h"
#include "hbapiitm.h"
#include "hbapierr.h"
#include "hbapifs.h" /* for __MVSAVE()/__MVRESTORE() */
#include "hbdate.h" /* for __MVSAVE()/__MVRESTORE() */
#include "hbcomp.h" /* for VS_* macros */
#include "error.ch"
#include "hbmemvar.ch"
#include "hbset.h"
#include "hbstack.h"
#if !defined( HB_MT_VM )
# define hb_dynsymGetMemvar( p ) ( ( PHB_ITEM ) (p)->pMemvar )
# define hb_dynsymSetMemvar( p, h ) do { (p)->pMemvar = (h); } while(0)
#endif
#define TABLE_INITHB_VALUE 100
#define TABLE_EXPANDHB_VALUE 50
struct mv_PUBLIC_var_info
{
int iPos;
BOOL bFound;
HB_DYNS_PTR pDynSym;
};
struct mv_memvarArray_info
{
PHB_ITEM pArray;
PHB_DYNS * pDyns;
ULONG ulCount;
int iScope;
};
static void hb_memvarCreateFromDynSymbol( PHB_DYNS pDynVar, BYTE bScope, PHB_ITEM pValue );
static PHB_ITEM hb_memvarValueNew( void )
{
PHB_ITEM pMemvar;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarValueNew()"));
pMemvar = ( PHB_ITEM ) hb_xgrab( sizeof( HB_ITEM ) );
pMemvar->type = HB_IT_NIL;
return pMemvar;
}
/*
* This function increases the number of references to passed global value
*/
#undef hb_memvarValueIncRef
void hb_memvarValueIncRef( PHB_ITEM pMemvar )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarValueIncRef(%p)", pMemvar));
hb_xRefInc( pMemvar );
}
/*
* This function decreases the number of references to passed global value.
* If it is the last reference then this value is deleted.
*/
void hb_memvarValueDecRef( PHB_ITEM pMemvar )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarValueDecRef(%p)", pMemvar));
if( hb_xRefDec( pMemvar ) )
{
if( HB_IS_COMPLEX( pMemvar ) )
hb_itemClear( pMemvar );
hb_xfree( pMemvar );
}
}
/*
* Detach public or private variable (swap current value with a memvar handle)
*/
static void hb_memvarDetachDynSym( PHB_DYNS pDynSym, PHB_ITEM pPrevMemvar )
{
PHB_ITEM pMemvar;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarDetachDynSym(%p,%p)", pDynSym, pPrevMemvar));
pMemvar = hb_dynsymGetMemvar( pDynSym );
hb_dynsymSetMemvar( pDynSym, pPrevMemvar );
hb_memvarValueDecRef( pMemvar );
}
/*
* Detach local variable (swap current value with a memvar handle)
*/
HB_ITEM_PTR hb_memvarDetachLocal( PHB_ITEM pLocal )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarDetachLocal(%p)", pLocal));
if( HB_IS_BYREF( pLocal ) )
{
do
{
if( HB_IS_MEMVAR( pLocal ) )
break;
else if( HB_IS_ENUM( pLocal ) && !pLocal->item.asEnum.valuePtr )
{
PHB_ITEM pBase = HB_IS_BYREF( pLocal->item.asEnum.basePtr ) ?
hb_itemUnRef( pLocal->item.asEnum.basePtr ) :
pLocal->item.asEnum.basePtr;
if( HB_IS_ARRAY( pBase ) )
{
PHB_ITEM pItem = hb_itemNew( NULL );
hb_arrayGetItemRef( pBase, pLocal->item.asEnum.offset, pItem );
pLocal->item.asEnum.valuePtr = pItem;
pLocal = pItem;
break;
}
}
else if( pLocal->item.asRefer.value >= 0 &&
pLocal->item.asRefer.offset == 0 )
break;
pLocal = hb_itemUnRefOnce( pLocal );
}
while( HB_IS_BYREF( pLocal ) );
}
/* Change the value only if this variable is not referenced
* by another codeblock yet.
* In this case we have to copy the current value to a global memory
* pool so it can be shared by codeblocks
*/
if( ! HB_IS_MEMVAR( pLocal ) )
{
PHB_ITEM pMemvar = hb_memvarValueNew();
hb_itemRawCpy( pMemvar, pLocal );
pMemvar->type &= ~HB_IT_DEFAULT;
pLocal->type = HB_IT_BYREF | HB_IT_MEMVAR;
pLocal->item.asMemvar.value = pMemvar;
}
return pLocal;
}
/*
* This function pushes passed dynamic symbol that belongs to PRIVATE variable
* into the stack. The value will be popped from it if the variable falls
* outside the scope (either by using RELEASE, CLEAR ALL, CLEAR MEMORY or by
* an exit from the function/procedure)
*
*/
static void hb_memvarAddPrivate( PHB_DYNS pDynSym, PHB_ITEM pValue )
{
HB_STACK_TLS_PRELOAD
PHB_PRIVATE_STACK pPrivateStack;
PHB_ITEM pMemvar;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarAddPrivate(%p,%p)", pDynSym, pValue));
pPrivateStack = hb_stackGetPrivateStack();
pMemvar = hb_dynsymGetMemvar( pDynSym );
/* If the variable with the same name exists already
* and it's PRIVATE variable declared in this function then
* do not push new memvar on PRIVATEs stack
*/
if( pMemvar )
{
ULONG ulCount = pPrivateStack->count;
while( ulCount > pPrivateStack->base )
{
if( pDynSym == pPrivateStack->stack[ ulCount - 1 ].pDynSym )
break;
--ulCount;
}
if( ulCount <= pPrivateStack->base )
pMemvar = NULL;
}
if( ! pMemvar )
{
/* Allocate the value from the end of table
*/
if( pPrivateStack->count == pPrivateStack->size )
{
/* No more free values in the table - expand the table
*/
if( pPrivateStack->size == 0 )
{
pPrivateStack->stack = ( PHB_PRIVATE_ITEM )
hb_xgrab( sizeof( HB_PRIVATE_ITEM ) * TABLE_INITHB_VALUE );
pPrivateStack->size = TABLE_INITHB_VALUE;
pPrivateStack->count = pPrivateStack->base = 0;
}
else
{
pPrivateStack->size += TABLE_EXPANDHB_VALUE;
pPrivateStack->stack = ( PHB_PRIVATE_ITEM )
hb_xrealloc( pPrivateStack->stack,
sizeof( HB_PRIVATE_ITEM ) * pPrivateStack->size );
}
}
pPrivateStack->stack[ pPrivateStack->count ].pDynSym = pDynSym;
pPrivateStack->stack[ pPrivateStack->count++ ].pPrevMemvar = hb_dynsymGetMemvar( pDynSym );
pMemvar = hb_memvarValueNew();
hb_dynsymSetMemvar( pDynSym, pMemvar );
}
if( pValue )
{
hb_itemCopy( pMemvar, pValue );
/* Remove MEMOFLAG if exists (assignment from field). */
pMemvar->type &= ~HB_IT_MEMOFLAG;
}
}
/*
* This function returns current PRIVATE variables stack base
*/
ULONG hb_memvarGetPrivatesBase( void )
{
HB_STACK_TLS_PRELOAD
ULONG ulBase;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarGetPrivatesBase()"));
ulBase = hb_stackGetPrivateStack()->base;
hb_stackGetPrivateStack()->base = hb_stackGetPrivateStack()->count;
return ulBase;
}
/*
* This function releases PRIVATE variables created after passed base
*/
void hb_memvarSetPrivatesBase( ULONG ulBase )
{
HB_STACK_TLS_PRELOAD
PHB_PRIVATE_STACK pPrivateStack;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarSetPrivatesBase(%lu)", ulBase));
pPrivateStack = hb_stackGetPrivateStack();
while( pPrivateStack->count > pPrivateStack->base )
{
PHB_DYNS pDynSym = pPrivateStack->stack[ --pPrivateStack->count ].pDynSym;
if( hb_dynsymGetMemvar( pDynSym ) )
{
/* Restore previous value for variables that were overridden
*/
hb_memvarDetachDynSym( pDynSym, pPrivateStack->stack[ pPrivateStack->count ].pPrevMemvar );
}
}
pPrivateStack->base = ulBase;
}
/*
* Update PRIVATE base ofsset so they will not be removed
* when function return
*/
void hb_memvarUpdatePrivatesBase( void )
{
HB_STACK_TLS_PRELOAD
HB_TRACE(HB_TR_DEBUG, ("hb_memvarUpdatePrivatesBase()"));
hb_stackGetPrivateStack()->base = hb_stackGetPrivateStack()->count;
}
/*
* Reset PRIVATE base offset to the level of previous function
*/
static void hb_memvarResetPrivatesBase( void )
{
HB_STACK_TLS_PRELOAD
HB_TRACE(HB_TR_DEBUG, ("hb_memvarResetPrivatesBase()"));
hb_stackGetPrivateStack()->base = hb_stackBaseItem()->item.asSymbol.stackstate->ulPrivateBase;
}
/*
* This functions copies passed item value into the memvar pointed
* by symbol
*
* pMemvar - symbol associated with a variable
* pItem - value to store in memvar
*
*/
void hb_memvarSetValue( PHB_SYMB pMemvarSymb, HB_ITEM_PTR pItem )
{
PHB_DYNS pDyn;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarSetValue(%p, %p)", pMemvarSymb, pItem));
pDyn = pMemvarSymb->pDynSym;
if( pDyn )
{
PHB_ITEM pMemvar;
pMemvar = hb_dynsymGetMemvar( pDyn );
HB_TRACE(HB_TR_INFO, ("Memvar item (%p)(%s) assigned", pMemvar, pMemvarSymb->szName));
if( pMemvar )
{
/* value is already created */
hb_itemCopyToRef( pMemvar, pItem );
/* Remove MEMOFLAG if exists (assignment from field). */
pMemvar->type &= ~HB_IT_MEMOFLAG;
}
else
{
/* assignment to undeclared memvar - PRIVATE is assumed */
hb_memvarCreateFromDynSymbol( pDyn, VS_PRIVATE, pItem );
}
}
else
hb_errInternal( HB_EI_MVBADSYMBOL, NULL, pMemvarSymb->szName, NULL );
}
HB_ERRCODE hb_memvarGet( HB_ITEM_PTR pItem, PHB_SYMB pMemvarSymb )
{
PHB_DYNS pDyn;
HB_ERRCODE bSuccess = HB_FAILURE;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarGet(%p, %p)", pItem, pMemvarSymb));
pDyn = pMemvarSymb->pDynSym;
if( pDyn )
{
PHB_ITEM pMemvar;
pMemvar = hb_dynsymGetMemvar( pDyn );
HB_TRACE(HB_TR_INFO, ("Memvar item (%p)(%s) queried", pMemvar, pMemvarSymb->szName));
if( pMemvar )
{
/* value is already created
*/
if( HB_IS_BYREF( pMemvar ) )
hb_itemCopy( pItem, hb_itemUnRef( pMemvar ) );
else
hb_itemCopy( pItem, pMemvar );
bSuccess = HB_SUCCESS;
}
}
else
hb_errInternal( HB_EI_MVBADSYMBOL, NULL, pMemvarSymb->szName, NULL );
return bSuccess;
}
void hb_memvarGetValue( HB_ITEM_PTR pItem, PHB_SYMB pMemvarSymb )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarGetValue(%p, %p)", pItem, pMemvarSymb));
if( hb_memvarGet( pItem, pMemvarSymb ) == HB_FAILURE )
{
/* Generate an error with retry possibility
* (user created error handler can create this variable)
*/
HB_ITEM_PTR pError;
pError = hb_errRT_New( ES_ERROR, NULL, EG_NOVAR, 1003,
NULL, pMemvarSymb->szName, 0, EF_CANRETRY );
while( hb_errLaunch( pError ) == E_RETRY )
{
if( hb_memvarGet( pItem, pMemvarSymb ) == HB_SUCCESS )
break;
}
hb_errRelease( pError );
}
}
void hb_memvarGetRefer( HB_ITEM_PTR pItem, PHB_SYMB pMemvarSymb )
{
PHB_DYNS pDyn;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarGetRefer(%p, %p)", pItem, pMemvarSymb));
pDyn = ( PHB_DYNS ) pMemvarSymb->pDynSym;
if( pDyn )
{
PHB_ITEM pMemvar;
pMemvar = hb_dynsymGetMemvar( pDyn );
HB_TRACE(HB_TR_INFO, ("Memvar item (%p)(%s) referenced", pMemvar, pMemvarSymb->szName));
if( pMemvar )
{
if( HB_IS_BYREF( pMemvar ) && ! HB_IS_ENUM( pMemvar ) )
hb_itemCopy( pItem, pMemvar );
else
{
/* value is already created */
pItem->type = HB_IT_BYREF | HB_IT_MEMVAR;
pItem->item.asMemvar.value = pMemvar;
hb_xRefInc( pMemvar );
}
}
else
{
/* Generate an error with retry possibility
* (user created error handler can make this variable accessible)
*/
HB_ITEM_PTR pError;
pError = hb_errRT_New( ES_ERROR, NULL, EG_NOVAR, 1003,
NULL, pMemvarSymb->szName, 0, EF_CANRETRY );
while( hb_errLaunch( pError ) == E_RETRY )
{
pMemvar = hb_dynsymGetMemvar( pDyn );
if( pMemvar )
{
if( HB_IS_BYREF( pMemvar ) && ! HB_IS_ENUM( pMemvar ) )
hb_itemCopy( pItem, pMemvar );
else
{
/* value is already created */
pItem->type = HB_IT_BYREF | HB_IT_MEMVAR;
pItem->item.asMemvar.value = pMemvar;
hb_xRefInc( pMemvar );
}
break;
}
}
hb_errRelease( pError );
}
}
else
hb_errInternal( HB_EI_MVBADSYMBOL, NULL, pMemvarSymb->szName, NULL );
}
PHB_ITEM hb_memvarGetItem( PHB_SYMB pMemvarSymb )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarGetItem(%p)", pMemvarSymb));
if( pMemvarSymb->pDynSym )
{
PHB_ITEM pMemvar = hb_dynsymGetMemvar( pMemvarSymb->pDynSym );
if( pMemvar )
{
if( HB_IS_BYREF( pMemvar ) )
return hb_itemUnRef( pMemvar );
else
return pMemvar;
}
}
return NULL;
}
/*
*/
void hb_memvarNewParameter( PHB_SYMB pSymbol, PHB_ITEM pValue )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarNewParameter(%p, %p)", pSymbol, pValue));
hb_memvarCreateFromDynSymbol( pSymbol->pDynSym, VS_PRIVATE, pValue );
}
static HB_DYNS_PTR hb_memvarFindSymbol( const char * szArg, ULONG ulLen )
{
HB_DYNS_PTR pDynSym = NULL;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarFindSymbol(%p,%lu)", szArg, ulLen));
if( ulLen && szArg && *szArg )
{
char szUprName[ HB_SYMBOL_NAME_LEN + 1 ];
int iSize = 0;
do
{
char cChar = *szArg++;
if( cChar >= 'a' && cChar <= 'z' )
{
szUprName[ iSize++ ] = cChar - ( 'a' - 'A' );
}
else if( cChar == ' ' || cChar == '\t' || cChar == '\n' )
{
if( iSize )
break;
}
else if( !cChar )
{
break;
}
else
{
szUprName[ iSize++ ] = cChar;
}
}
while( --ulLen && iSize < HB_SYMBOL_NAME_LEN );
if( iSize )
{
szUprName[ iSize ] = '\0';
pDynSym = hb_dynsymFind( szUprName );
}
}
return pDynSym;
}
char * hb_memvarGetStrValuePtr( char * szVarName, ULONG *pulLen )
{
HB_DYNS_PTR pDynVar;
char * szValue = NULL;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarGetStrValuePtr(%s, %p)", szVarName, pulLen));
pDynVar = hb_memvarFindSymbol( szVarName, *pulLen );
if( pDynVar )
{
/* there is dynamic symbol with the requested name - check if it is
* a memvar variable
*/
PHB_ITEM pMemvar = hb_dynsymGetMemvar( pDynVar );
if( pMemvar )
{
/* variable contains some data
*/
if( HB_IS_BYREF( pMemvar ) )
pMemvar = hb_itemUnRef( pMemvar );
if( HB_IS_STRING( pMemvar ) )
{
szValue = pMemvar->item.asString.value;
*pulLen = pMemvar->item.asString.length;
}
}
}
return szValue;
}
/*
* This function creates a value for memvar variable
*
* pMemvar - an item that stores the name of variable - it can be either
* the HB_IT_SYMBOL (if created by PUBLIC statement) or HB_IT_STRING
* (if created by direct call to __MVPUBLIC function)
* bScope - the scope of created variable - if a variable with the same name
* exists already then it's value is hidden by new variable with
* passed scope
* pValue - optional item used to initialize the value of created variable
* or NULL
*
*/
void hb_memvarCreateFromItem( PHB_ITEM pMemvar, BYTE bScope, PHB_ITEM pValue )
{
PHB_DYNS pDynVar = NULL;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarCreateFromItem(%p, %d, %p)", pMemvar, bScope, pValue));
/* find dynamic symbol or creeate one */
if( HB_IS_SYMBOL( pMemvar ) )
/* pDynVar = hb_dynsymGet( pMemvar->item.asSymbol.value->szName ); */
pDynVar = pMemvar->item.asSymbol.value->pDynSym;
else if( HB_IS_STRING( pMemvar ) )
pDynVar = hb_dynsymGet( pMemvar->item.asString.value );
if( pDynVar )
hb_memvarCreateFromDynSymbol( pDynVar, bScope, pValue );
else
hb_errRT_BASE( EG_ARG, 3008, NULL, "&", HB_ERR_ARGS_BASEPARAMS );
}
static void hb_memvarCreateFromDynSymbol( PHB_DYNS pDynVar, BYTE bScope, PHB_ITEM pValue )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarCreateFromDynSymbol(%p, %d, %p)", pDynVar, bScope, pValue));
if( bScope & VS_PUBLIC )
{
/* If the variable with the same name exists already
* then the current value have to be unchanged
*/
if( ! hb_dynsymGetMemvar( pDynVar ) )
{
PHB_ITEM pMemvar = hb_memvarValueNew();
hb_dynsymSetMemvar( pDynVar, pMemvar );
if( pValue )
{
hb_itemCopy( pMemvar, pValue );
/* Remove MEMOFLAG if exists (assignment from field). */
pMemvar->type &= ~HB_IT_MEMOFLAG;
}
else
{
/* new PUBLIC variable - initialize it to .F.
*/
pMemvar->type = HB_IT_LOGICAL;
/* NOTE: PUBLIC variables named CLIPPER and HARBOUR are initialized */
/* to .T., this is normal Clipper behaviour. [vszakats] */
pMemvar->item.asLogical.value =
( strcmp( pDynVar->pSymbol->szName, "HARBOUR" ) == 0 ||
strcmp( pDynVar->pSymbol->szName, "CLIPPER" ) == 0 );
}
}
}
else
{
/* Create new PRIVATE var and add it to the PRIVATE variables stack
*/
hb_memvarAddPrivate( pDynVar, pValue );
}
}
/* This function releases all memory occupied by a memvar variable
* It also restores the value that was hidden if there is another
* PRIVATE variable with the same name.
*/
static void hb_memvarRelease( HB_ITEM_PTR pMemvar )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarRelease(%p)", pMemvar));
if( HB_IS_STRING( pMemvar ) )
{
PHB_DYNS pDynSymbol = hb_memvarFindSymbol( pMemvar->item.asString.value,
pMemvar->item.asString.length );
if( pDynSymbol && hb_dynsymGetMemvar( pDynSymbol ) )
{
HB_STACK_TLS_PRELOAD
ULONG ulBase = hb_stackGetPrivateStack()->count;
/* Find the variable with a requested name that is currently visible
* Start from the top of the stack.
*/
while( ulBase > 0 )
{
if( pDynSymbol == hb_stackGetPrivateStack()->stack[ --ulBase ].pDynSym )
{
/* reset current value to NIL - the overriden variables will be
* visible after exit from current procedure
*/
pMemvar = hb_dynsymGetMemvar( pDynSymbol );
if( pMemvar )
hb_itemClear( pMemvar );
return;
}
}
/* No match found for PRIVATEs - it's PUBLIC so let's remove it.
*/
hb_memvarDetachDynSym( pDynSymbol, NULL );
}
}
else
hb_errRT_BASE( EG_ARG, 3008, NULL, "RELEASE", HB_ERR_ARGS_BASEPARAMS );
}
/* This function releases all memory occupied by a memvar variable and
* assigns NIL value - it releases variables created in current
* procedure only.
* The scope of released variables are specified using passed name's mask
*/
static void hb_memvarReleaseWithMask( const char *szMask, BOOL bInclude )
{
HB_STACK_TLS_PRELOAD
ULONG ulBase = hb_stackGetPrivateStack()->count;
PHB_DYNS pDynVar;
PHB_ITEM pMemvar;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarReleaseWithMask(%s, %d)", szMask, (int) bInclude));
while( ulBase > hb_stackGetPrivateStack()->base )
{
--ulBase;
pDynVar = hb_stackGetPrivateStack()->stack[ ulBase ].pDynSym;
/* reset current value to NIL - the overriden variables will be
* visible after exit from current procedure
*/
pMemvar = hb_dynsymGetMemvar( pDynVar );
if( pMemvar )
{
BOOL fMatch = hb_strMatchCaseWildExact( pDynVar->pSymbol->szName, szMask );
if( bInclude ? fMatch : !fMatch )
hb_itemClear( pMemvar );
}
}
}
/* Checks if passed dynamic symbol is a variable and returns its scope
*/
static int hb_memvarScopeGet( PHB_DYNS pDynVar )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarScopeGet(%p)", pDynVar));
if( hb_dynsymGetMemvar( pDynVar ) == 0 )
return HB_MV_UNKNOWN;
else
{
HB_STACK_TLS_PRELOAD
ULONG ulBase = hb_stackGetPrivateStack()->count; /* start from the top of the stack */
while( ulBase )
{
if( pDynVar == hb_stackGetPrivateStack()->stack[ --ulBase ].pDynSym )
{
if( ulBase >= hb_stackGetPrivateStack()->base )
return HB_MV_PRIVATE_LOCAL;
else
return HB_MV_PRIVATE_GLOBAL;
}
}
return HB_MV_PUBLIC;
}
}
/* This function checks the scope of passed variable name
*/
int hb_memvarScope( char * szVarName, ULONG ulLength )
{
PHB_DYNS pDynVar;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarScope(%s, %lu)", szVarName, ulLength));
pDynVar = hb_memvarFindSymbol( szVarName, ulLength );
if( pDynVar )
return hb_memvarScopeGet( pDynVar );
else
return HB_MV_NOT_FOUND;
}
#if !defined( HB_MT_VM )
/* Releases memory occupied by a variable
*/
static HB_DYNS_FUNC( hb_memvarClear )
{
if( pDynSymbol != ( PHB_DYNS ) Cargo &&
hb_dynsymGetMemvar( pDynSymbol ) )
hb_memvarDetachDynSym( pDynSymbol, NULL );
return TRUE;
}
#endif
/* Clear all memvar variables optionally without GetList PUBLIC variable */
void hb_memvarsClear( BOOL fAll )
{
HB_STACK_TLS_PRELOAD
PHB_DYNS pGetList;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarsClear(%d)", ( int ) fAll));
pGetList = fAll ? NULL : hb_dynsymFind( "GETLIST" );
hb_stackClearMemvarsBase();
hb_stackGetPrivateStack()->base = 0;
hb_memvarSetPrivatesBase( 0 );
#if !defined( HB_MT_VM )
hb_dynsymEval( hb_memvarClear, ( void * ) pGetList );
#else
/* this is a little bit hacked but many times faster version
* of memvars clearing because it scans only given thread stack
* not global dynamic symbol table. It noticeable reduce the cost
* of HVM thread releasing.
*/
hb_stackClearMemvars( pGetList ? ( int ) pGetList->uiSymNum : -1 );
#endif
}
/* Checks passed dynamic symbol if it is a PUBLIC variable and
* increments the counter eventually
*/
static HB_DYNS_FUNC( hb_memvarCountPublics )
{
if( hb_memvarScopeGet( pDynSymbol ) == HB_MV_PUBLIC )
( * ( ( int * )Cargo ) )++;
return TRUE;
}
static ULONG hb_memvarGetBaseOffset( int iProcLevel )
{
HB_STACK_TLS_PRELOAD
if( iProcLevel > 0 )
{
int iLevel = hb_stackCallDepth();
if( iProcLevel < iLevel )
{
LONG lOffset = hb_stackBaseProcOffset( iLevel - iProcLevel - 1 );
if( lOffset > 0 )
return hb_stackItem( lOffset )->item.asSymbol.stackstate->ulPrivateBase;
}
}
return hb_stackBaseItem()->item.asSymbol.stackstate->ulPrivateBase;
}
/* Count the number of variables with given scope
*/
static int hb_memvarCount( int iScope, int iLevel )
{
HB_TRACE(HB_TR_DEBUG, ("hb_memvarCount(%d,%d)", iScope, iLevel));
if( iScope == HB_MV_PUBLIC )
{
int iPublicCnt = 0;
hb_dynsymProtectEval( hb_memvarCountPublics, ( void * ) &iPublicCnt );
return iPublicCnt;
}
else /* number of PRIVATE variables */
{
HB_STACK_TLS_PRELOAD
if( iScope == HB_MV_PRIVATE_LOCAL )
return hb_stackGetPrivateStack()->count - hb_memvarGetBaseOffset( iLevel );
else if( iScope == HB_MV_PRIVATE_GLOBAL )
return hb_memvarGetBaseOffset( iLevel );
else
return hb_stackGetPrivateStack()->count;
}
}
/* Checks passed dynamic symbol if it is a PUBLIC variable and returns
* a pointer to its dynamic symbol
*/
static HB_DYNS_FUNC( hb_memvarFindPublicByPos )
{
BOOL bCont = TRUE;
if( hb_memvarScopeGet( pDynSymbol ) == HB_MV_PUBLIC )
{
struct mv_PUBLIC_var_info *pStruPub = (struct mv_PUBLIC_var_info *) Cargo;
if( pStruPub->iPos-- == 0 )
{
pStruPub->bFound = TRUE;
pStruPub->pDynSym = pDynSymbol;
bCont = FALSE;
}
}
return bCont;
}
/* Returns the pointer to item that holds a value of variable (or NULL if
* not found). It fills also the pointer to the variable name
* Both pointers points to existing and used data - they shouldn't be
* deallocated.
*/
static HB_ITEM_PTR hb_memvarDebugVariable( int iScope, int iPos, const char ** pszName )
{
PHB_ITEM pValue = NULL;
*pszName = NULL;
HB_TRACE(HB_TR_DEBUG, ("hb_memvarDebugVariable(%d, %d, %p)", iScope, iPos, pszName));
if( iPos > 0 )
{
--iPos;
if( iScope == HB_MV_PUBLIC )
{
struct mv_PUBLIC_var_info struPub;
struPub.iPos = iPos;
struPub.bFound = FALSE;
/* enumerate existing dynamic symbols and fill this structure
* with info for requested PUBLIC variable
*/
hb_dynsymProtectEval( hb_memvarFindPublicByPos, ( void * ) &struPub );
if( struPub.bFound )
{
pValue = hb_dynsymGetMemvar( struPub.pDynSym );
*pszName = struPub.pDynSym->pSymbol->szName;
}
}
else
{
HB_STACK_TLS_PRELOAD
if( ( ULONG ) iPos < hb_stackGetPrivateStack()->count )
{
HB_DYNS_PTR pDynSym = hb_stackGetPrivateStack()->stack[ iPos ].pDynSym;
pValue = hb_dynsymGetMemvar( pDynSym );
*pszName = pDynSym->pSymbol->szName;
}
}
}
return pValue;
}
static HB_DYNS_FUNC( hb_memvarCountVisible )
{
PHB_ITEM pMemvar = hb_dynsymGetMemvar( pDynSymbol );
if( pMemvar )
{
struct mv_memvarArray_info *pMVInfo = ( struct mv_memvarArray_info * ) Cargo;
if( !pMVInfo->iScope ||
( hb_memvarScopeGet( pDynSymbol ) & pMVInfo->iScope ) != 0 )
{
pMVInfo->pDyns[ pMVInfo->ulCount++ ] = pDynSymbol;
}
}
return TRUE;
}
PHB_ITEM hb_memvarSaveInArray( int iScope, BOOL fCopy )
{
HB_STACK_TLS_PRELOAD
struct mv_memvarArray_info MVInfo;
PHB_ITEM pArray, pItem, pMemvar;
PHB_DYNS pDynSymbol;
pArray = NULL;
iScope &= HB_MV_PUBLIC | HB_MV_PRIVATE;
if( iScope == ( HB_MV_PUBLIC | HB_MV_PRIVATE ) )
iScope = 0;
#if !defined( HB_MT_VM )
MVInfo.pDyns = ( PHB_DYNS * ) hb_xgrab( hb_dynsymCount() *
sizeof( PHB_DYNS ) );
#else
MVInfo.pDyns = ( PHB_DYNS * ) hb_xgrab( hb_stackDynHandlesCount() *
sizeof( PHB_DYNS ) );
#endif
MVInfo.ulCount = 0;
MVInfo.iScope = iScope;
hb_dynsymProtectEval( hb_memvarCountVisible, ( void * ) &MVInfo );
if( MVInfo.ulCount > 0 )
{
pArray = hb_itemArrayNew( MVInfo.ulCount );
do
{
pItem = hb_arrayGetItemPtr( pArray, MVInfo.ulCount );
pDynSymbol = MVInfo.pDyns[ --MVInfo.ulCount ];
pMemvar = hb_dynsymGetMemvar( pDynSymbol ),
hb_arrayNew( pItem, 2 );
hb_arraySetSymbol( pItem, 1, pDynSymbol->pSymbol );
pItem = hb_arrayGetItemPtr( pItem, 2 );
if( fCopy )
{
hb_itemCopy( pItem, pMemvar );
hb_memvarDetachLocal( pItem );
}
else
{
pItem->type = HB_IT_BYREF | HB_IT_MEMVAR;
pItem->item.asMemvar.value = pMemvar;
hb_xRefInc( pMemvar );
}
}
while( MVInfo.ulCount );
}
hb_xfree( MVInfo.pDyns );
return pArray;
}
void hb_memvarRestoreFromArray( PHB_ITEM pArray )
{
ULONG ulCount, ulPos;
ulCount = hb_arrayLen( pArray );
for( ulPos = 1; ulPos <= ulCount; ++ulPos )
{
PHB_ITEM pItem = hb_arrayGetItemPtr( pArray, ulPos );
PHB_DYNS pDynSym = hb_arrayGetSymbol( pItem, 1 )->pDynSym;
PHB_ITEM pMemvar = hb_arrayGetItemPtr( pItem, 2 )->item.asMemvar.value;
hb_memvarValueIncRef( pMemvar );
if( hb_dynsymGetMemvar( pDynSym ) )
hb_memvarDetachDynSym( pDynSym, pMemvar );
else
hb_dynsymSetMemvar( pDynSym, pMemvar );
}
}
/* ************************************************************************** */
static const char * hb_memvarGetMask( int iParam )
{
const char * pszMask = hb_parc( iParam );
if( !pszMask || pszMask[ 0 ] == '*' )
pszMask = "*";
return pszMask;
}
HB_FUNC( __MVPUBLIC )
{
HB_STACK_TLS_PRELOAD
int iCount = hb_pcount();
if( iCount )
{
int i;
for( i = 1; i <= iCount; i++ )
{
PHB_ITEM pMemvar = hb_param( i, HB_IT_ANY );
if( pMemvar )
{
if( HB_IS_ARRAY( pMemvar ) )
{
/* we are accepting an one-dimensional array of strings only
*/
ULONG j, ulLen = hb_arrayLen( pMemvar );
for( j = 1; j <= ulLen; j++ )
{
hb_memvarCreateFromItem( hb_arrayGetItemPtr( pMemvar, j ), VS_PUBLIC, NULL );
}
}
else
hb_memvarCreateFromItem( pMemvar, VS_PUBLIC, NULL );
}
}
}
}
HB_FUNC( __MVPRIVATE )
{
HB_STACK_TLS_PRELOAD
int iCount = hb_pcount();
if( iCount )
{
int i;
hb_memvarResetPrivatesBase();
for( i = 1; i <= iCount; i++ )
{
PHB_ITEM pMemvar = hb_param( i, HB_IT_ANY );
if( pMemvar )
{
if( HB_IS_ARRAY( pMemvar ) )
{
/* we are accepting an one-dimensional array of strings only
*/
ULONG j, ulLen = hb_arrayLen( pMemvar );
for( j = 1; j <= ulLen; j++ )
{
hb_memvarCreateFromItem( hb_arrayGetItemPtr( pMemvar, j ), VS_PRIVATE, NULL );
}
}
else
hb_memvarCreateFromItem( pMemvar, VS_PRIVATE, NULL );
}
}
hb_memvarUpdatePrivatesBase();
}
}
HB_FUNC( __MVXRELEASE )
{
HB_STACK_TLS_PRELOAD
int iCount = hb_pcount();
if( iCount )
{
int i;
for( i = 1; i <= iCount; i++ )
{
PHB_ITEM pMemvar = hb_param( i, HB_IT_ANY );
if( pMemvar )
{
if( HB_IS_ARRAY( pMemvar ) )
{
/* we are accepting an one-dimensional array of strings only
*/
ULONG j, ulLen = hb_arrayLen( pMemvar );
for( j = 1; j <= ulLen; j++ )
{
hb_memvarRelease( hb_arrayGetItemPtr( pMemvar, j ) );
}
}
else
hb_memvarRelease( pMemvar );
}
}
}
}
HB_FUNC( __MVRELEASE )
{
HB_STACK_TLS_PRELOAD
int iCount = hb_pcount();
if( iCount && HB_ISCHAR( 1 ) )
{
BOOL bIncludeVar;
const char * pszMask;
pszMask = hb_memvarGetMask( 1 );
bIncludeVar = ( pszMask[ 0 ] == '*' && !pszMask[ 1 ] ) ||
iCount < 2 || hb_parl( 2 );
hb_memvarReleaseWithMask( pszMask, bIncludeVar );
}
}
HB_FUNC( __MVSCOPE )
{
HB_STACK_TLS_PRELOAD
int iMemvar = HB_MV_ERROR;
if( hb_pcount() )
{
PHB_ITEM pVarName = hb_param( 1, HB_IT_STRING );
if( pVarName )
iMemvar = hb_memvarScope( pVarName->item.asString.value,
pVarName->item.asString.length );
}
hb_retni( iMemvar );
}
HB_FUNC( __MVCLEAR )
{
hb_memvarsClear( FALSE );
}
HB_FUNC( __MVDBGINFO )
{
HB_STACK_TLS_PRELOAD
int iCount = hb_pcount();
if( iCount == 1 || iCount == 2 ) /* request for a number of variables */
hb_retni( hb_memvarCount( hb_parni( 1 ), hb_parni( 2 ) ) );
else if( iCount > 2 ) /* request for a value of variable */
{
HB_ITEM_PTR pValue;
const char * szName;
pValue = hb_memvarDebugVariable( hb_parni( 1 ), hb_parni( 2 ), &szName );
if( pValue ) /* the requested variable was found */
{
hb_storc( szName, 3 );
hb_itemReturn( pValue );
}
else
{
hb_ret(); /* return NIL value */
hb_storc( "?", 3 );
}
}
}
HB_FUNC( __MVEXIST )
{
HB_STACK_TLS_PRELOAD
PHB_DYNS pDyn;
pDyn = hb_memvarFindSymbol( hb_parc( 1 ), hb_parclen( 1 ) );
hb_retl( pDyn && hb_dynsymGetMemvar( pDyn ) );
}
HB_FUNC( __MVGET )
{
HB_ITEM_PTR pName = hb_param( 1, HB_IT_STRING );
if( pName )
{
HB_STACK_TLS_PRELOAD
HB_DYNS_PTR pDynVar = hb_memvarFindSymbol( pName->item.asString.value,
pName->item.asString.length );
if( pDynVar )
{
PHB_ITEM pValue = hb_stackAllocItem();
hb_memvarGetValue( pValue, pDynVar->pSymbol );
hb_itemReturnForward( pValue );
hb_stackDec();
}
else
{
/* Generate an error with retry possibility
* (user created error handler can create this variable)
*/
HB_ITEM_PTR pError;
pError = hb_errRT_New( ES_ERROR, NULL, EG_NOVAR, 1003,
NULL, pName->item.asString.value, 0, EF_CANRETRY );
while( hb_errLaunch( pError ) == E_RETRY )
{
pDynVar = hb_memvarFindSymbol( hb_itemGetCPtr( pName ),
hb_itemGetCLen( pName ) );
if( pDynVar )
{
PHB_ITEM pValue = hb_stackAllocItem();
hb_memvarGetValue( pValue, pDynVar->pSymbol );
hb_itemReturnForward( pValue );
hb_stackDec();
break;
}
}
hb_errRelease( pError );
}
}
else
{
/* either the first parameter is not specified or it has a wrong type
* (it must be a string)
* This is not a critical error - we can continue normal processing
*/
hb_errRT_BASE_SubstR( EG_ARG, 3009, NULL, NULL, HB_ERR_ARGS_BASEPARAMS );
}
}
HB_FUNC( __MVPUT )
{
HB_ITEM_PTR pName = hb_param( 1, HB_IT_STRING );
HB_ITEM_PTR pValue = hb_paramError( 2 );
if( pName )
{
/* the first parameter is a string with not empty variable name
*/
HB_DYNS_PTR pDynVar = hb_memvarFindSymbol( pName->item.asString.value,
pName->item.asString.length );
if( pDynVar )
{
/* variable was declared somwhere - assign a new value
*/
hb_memvarSetValue( pDynVar->pSymbol, pValue );
}
else
{
/* attempt to assign a value to undeclared variable
* create the PRIVATE one
*/
hb_memvarCreateFromDynSymbol( hb_dynsymGet( pName->item.asString.value ), VS_PRIVATE, pValue );
}
hb_memvarUpdatePrivatesBase();
hb_itemReturn( pValue );
}
else
{
/* either the first parameter is not specified or it has a wrong type
* (it must be a string)
* This is not a critical error - we can continue normal processing
*/
HB_ITEM_PTR pRetValue = hb_errRT_BASE_Subst( EG_ARG, 3010, NULL, NULL, HB_ERR_ARGS_BASEPARAMS );
if( pRetValue )
hb_itemRelease( pRetValue );
hb_itemReturn( pValue );
}
}
#define HB_MEM_REC_LEN 32
#define HB_MEM_NUM_LEN 8
typedef struct
{
const char * pszMask;
BOOL bIncludeMask;
BYTE * buffer;
HB_FHANDLE fhnd;
} MEMVARSAVE_CARGO;
/* saves a variable to a mem file already open */
static HB_DYNS_FUNC( hb_memvarSave )
{
const char * pszMask = ( ( MEMVARSAVE_CARGO * ) Cargo )->pszMask;
BOOL bIncludeMask = ( ( MEMVARSAVE_CARGO * ) Cargo )->bIncludeMask;
BYTE * buffer = ( ( MEMVARSAVE_CARGO * ) Cargo )->buffer;
HB_FHANDLE fhnd = ( ( MEMVARSAVE_CARGO * ) Cargo )->fhnd;
PHB_ITEM pMemvar;
/* NOTE: Harbour name lengths are not limited, but the .mem file
structure is not flexible enough to allow for it.
[vszakats] */
pMemvar = hb_dynsymGetMemvar( pDynSymbol );
if( pMemvar )
{
BOOL bMatch = hb_strMatchCaseWildExact( pDynSymbol->pSymbol->szName, pszMask );
/* Process it if it matches the passed mask */
if( bIncludeMask ? bMatch : ! bMatch )
{
/* NOTE: Clipper will not initialize the record buffer with
zeros, so they will look trashed. [vszakats] */
memset( buffer, 0, HB_MEM_REC_LEN );
/* NOTE: Save only the first 10 characters of the name */
hb_strncpy( ( char * ) buffer, pDynSymbol->pSymbol->szName, 10 );
if( HB_IS_STRING( pMemvar ) )
{
/* Store the closing zero byte, too */
ULONG ulLen = hb_itemGetCLen( pMemvar ) + 1;
int iOverFlow = 0;
/* Clipper support only 64KB strings */
if( ulLen > USHRT_MAX )
{
ulLen = USHRT_MAX;
iOverFlow = 1;
}
buffer[ 11 ] = 'C' + 128;
HB_PUT_LE_UINT16( &buffer[ 16 ], ulLen );
hb_fsWrite( fhnd, buffer, HB_MEM_REC_LEN );
hb_fsWriteLarge( fhnd, ( BYTE * ) hb_itemGetCPtr( pMemvar ), ulLen - iOverFlow );
if( iOverFlow )
hb_fsWrite( fhnd, ( const BYTE * ) "\0", 1 );
}
else if( HB_IS_NUMERIC( pMemvar ) )
{
double dNumber;
int iWidth;
int iDec;
dNumber = hb_itemGetND( pMemvar );
hb_itemGetNLen( pMemvar, &iWidth, &iDec );
buffer[ 11 ] = 'N' + 128;
#ifdef HB_C52_STRICT
/* NOTE: This is the buggy, but fully CA-Cl*pper compatible method. [vszakats] */
buffer[ 16 ] = ( BYTE ) iWidth + ( HB_IS_DOUBLE( pMemvar ) ? ( BYTE ) ( iDec + 1 ) : 0 );
#else
/* NOTE: This would be the correct method, but Clipper is buggy here. [vszakats] */
buffer[ 16 ] = ( BYTE ) iWidth + ( iDec == 0 ? 0 : ( BYTE ) ( iDec + 1 ) );
#endif
buffer[ 17 ] = ( BYTE ) iDec;
HB_PUT_LE_DOUBLE( &buffer[ HB_MEM_REC_LEN ], dNumber );
hb_fsWrite( fhnd, buffer, HB_MEM_REC_LEN + HB_MEM_NUM_LEN );
}
else if( HB_IS_DATE( pMemvar ) )
{
double dNumber = ( double ) hb_itemGetDL( pMemvar );
buffer[ 11 ] = 'D' + 128;
buffer[ 16 ] = 1;
buffer[ 17 ] = 0;
HB_PUT_LE_DOUBLE( &buffer[ HB_MEM_REC_LEN ], dNumber );
hb_fsWrite( fhnd, buffer, HB_MEM_REC_LEN + HB_MEM_NUM_LEN );
}
else if( HB_IS_TIMESTAMP( pMemvar ) )
{
double dNumber = hb_itemGetTD( pMemvar );
buffer[ 11 ] = 'T' + 128;
buffer[ 16 ] = 1;
buffer[ 17 ] = 0;
HB_PUT_LE_DOUBLE( &buffer[ HB_MEM_REC_LEN ], dNumber );
hb_fsWrite( fhnd, buffer, HB_MEM_REC_LEN + HB_MEM_NUM_LEN );
}
else if( HB_IS_LOGICAL( pMemvar ) )
{
buffer[ 11 ] = 'L' + 128;
buffer[ 16 ] = 1;
buffer[ 17 ] = 0;
buffer[ HB_MEM_REC_LEN ] = hb_itemGetL( pMemvar ) ? 1 : 0;
hb_fsWrite( fhnd, buffer, HB_MEM_REC_LEN + 1 );
}
}
}
return TRUE;
}
HB_FUNC( __MVSAVE )
{
HB_STACK_TLS_PRELOAD
/* Clipper also checks for the number of arguments here */
if( hb_pcount() == 3 && HB_ISCHAR( 1 ) && HB_ISCHAR( 2 ) && HB_ISLOG( 3 ) )
{
PHB_ITEM pError = NULL;
PHB_FNAME pFileName;
char szFileName[ HB_PATH_MAX ];
HB_FHANDLE fhnd;
/* Generate filename */
pFileName = hb_fsFNameSplit( hb_parc( 1 ) );
if( pFileName->szExtension == NULL && hb_stackSetStruct()->HB_SET_DEFEXTENSIONS )
pFileName->szExtension = ".mem";
if( ! pFileName->szPath )
pFileName->szPath = hb_stackSetStruct()->HB_SET_DEFAULT;
hb_fsFNameMerge( szFileName, pFileName );
hb_xfree( pFileName );
/* Create .mem file */
do
{
fhnd = hb_fsExtOpen( ( BYTE * ) szFileName, NULL,
FXO_TRUNCATE | FO_READWRITE | FO_EXCLUSIVE |
FXO_DEFAULTS | FXO_SHARELOCK,
NULL, pError );
if( fhnd == FS_ERROR )
{
pError = hb_errRT_FileError( pError, NULL, EG_CREATE, 2006, szFileName );
if( hb_errLaunch( pError ) != E_RETRY )
break;
}
}
while( fhnd == FS_ERROR );
if( fhnd != FS_ERROR )
{
BYTE buffer[ HB_MEM_REC_LEN + HB_MEM_NUM_LEN ];
MEMVARSAVE_CARGO msc;
msc.pszMask = hb_memvarGetMask( 2 );
msc.bIncludeMask = hb_parl( 3 );
msc.buffer = buffer;
msc.fhnd = fhnd;
/* Walk through all visible memory variables and save each one */
hb_dynsymEval( hb_memvarSave, ( void * ) &msc );
buffer[ 0 ] = '\x1A';
hb_fsWrite( fhnd, buffer, 1 );
hb_fsClose( fhnd );
}
if( pError )
hb_itemRelease( pError );
}
else
/* NOTE: Undocumented error message in CA-Cl*pper 5.2e and 5.3x. [ckedem] */
hb_errRT_BASE( EG_ARG, 2008, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* NOTE: There's an extension in Harbour, which makes it possible to only
load (or not load) variable names with a specific name mask.
[vszakats] */
HB_FUNC( __MVRESTORE )
{
/* Clipper checks for the number of arguments here here, but we cannot
in Harbour since we have two optional parameters as an extension. */
#ifdef HB_C52_STRICT
if( hb_pcount() == 2 && HB_ISCHAR( 1 ) && HB_ISLOG( 2 ) )
#else
if( HB_ISCHAR( 1 ) && HB_ISLOG( 2 ) )
#endif
{
HB_STACK_TLS_PRELOAD
PHB_ITEM pError = NULL;
PHB_FNAME pFileName;
char szFileName[ HB_PATH_MAX ];
HB_FHANDLE fhnd;
BOOL bAdditive = hb_parl( 2 );
/* Clear all memory variables if not ADDITIVE */
if( ! bAdditive )
hb_memvarsClear( FALSE );
/* Generate filename */
pFileName = hb_fsFNameSplit( hb_parc( 1 ) );
if( pFileName->szExtension == NULL && hb_stackSetStruct()->HB_SET_DEFEXTENSIONS )
pFileName->szExtension = ".mem";
if( ! pFileName->szPath )
pFileName->szPath = hb_stackSetStruct()->HB_SET_DEFAULT;
hb_fsFNameMerge( szFileName, pFileName );
hb_xfree( pFileName );
/* Open .mem file */
do
{
fhnd = hb_fsExtOpen( ( BYTE * ) szFileName, NULL,
FO_READ | FXO_DEFAULTS | FXO_SHARELOCK,
NULL, pError );
if( fhnd == FS_ERROR )
{
pError = hb_errRT_FileError( pError, NULL, EG_OPEN, 2005, szFileName );
if( hb_errLaunch( pError ) != E_RETRY )
break;
}
}
while( fhnd == FS_ERROR );
if( fhnd != FS_ERROR )
{
BOOL bIncludeMask;
BYTE buffer[ HB_MEM_REC_LEN ];
const char * pszMask;
char *szName;
PHB_ITEM pItem = NULL;
#ifdef HB_C52_STRICT
pszMask = "*";
bIncludeMask = TRUE;
#else
pszMask = hb_memvarGetMask( 3 );
bIncludeMask = ! HB_ISLOG( 4 ) || hb_parl( 4 );
#endif
while( hb_fsRead( fhnd, buffer, HB_MEM_REC_LEN ) == HB_MEM_REC_LEN )
{
/* FoxPro does not add 128 to item type: 'N', 'C', 'D', 'L'
* CA-Cl*pper respects it and read such files so we also should.
*/
USHORT uiType = ( USHORT ) ( buffer[ 11 ] & 0x7f );
USHORT uiWidth = ( USHORT ) buffer[ 16 ];
USHORT uiDec = ( USHORT ) buffer[ 17 ];
/* protect against corrupted files */
buffer[ 10 ] = '\0';
szName = ( char * ) buffer;
switch( uiType )
{
case 'C':
{
BYTE * pbyString;
uiWidth += uiDec * 256;
pbyString = ( BYTE * ) hb_xgrab( uiWidth );
if( hb_fsRead( fhnd, pbyString, uiWidth ) == uiWidth )
pItem = hb_itemPutCLPtr( pItem, ( char * ) pbyString, uiWidth - 1 );
else
{
hb_xfree( pbyString );
szName = NULL;
}
break;
}
case 'N':
{
BYTE pbyNumber[ HB_MEM_NUM_LEN ];
if( hb_fsRead( fhnd, pbyNumber, HB_MEM_NUM_LEN ) == HB_MEM_NUM_LEN )
pItem = hb_itemPutNLen( pItem, HB_GET_LE_DOUBLE( pbyNumber ), uiWidth - ( uiDec ? ( uiDec + 1 ) : 0 ), uiDec );
else
szName = NULL;
break;
}
case 'D':
{
BYTE pbyNumber[ HB_MEM_NUM_LEN ];
if( hb_fsRead( fhnd, pbyNumber, HB_MEM_NUM_LEN ) == HB_MEM_NUM_LEN )
pItem = hb_itemPutDL( pItem, ( long ) HB_GET_LE_DOUBLE( pbyNumber ) );
else
szName = NULL;
break;
}
case 'T':
{
BYTE pbyNumber[ HB_MEM_NUM_LEN ];
if( hb_fsRead( fhnd, pbyNumber, HB_MEM_NUM_LEN ) == HB_MEM_NUM_LEN )
pItem = hb_itemPutTD( pItem, HB_GET_LE_DOUBLE( pbyNumber ) );
else
szName = NULL;
break;
}
case 'L':
{
BYTE pbyLogical[ 1 ];
if( hb_fsRead( fhnd, pbyLogical, 1 ) == 1 )
pItem = hb_itemPutL( pItem, pbyLogical[ 0 ] != 0 );
else
szName = NULL;
break;
}
default:
szName = NULL;
}
if( szName )
{
BOOL bMatch = hb_strMatchCaseWildExact( szName, pszMask );
/* Process it if it matches the passed mask */
if( bIncludeMask ? bMatch : ! bMatch )
{
/* the first parameter is a string with not empty variable name */
HB_DYNS_PTR pDynVar = hb_memvarFindSymbol( szName, strlen( szName ) );
if( pDynVar )
/* variable was declared somwhere - assign a new value */
hb_memvarSetValue( pDynVar->pSymbol, pItem );
else
/* attempt to assign a value to undeclared variable create the PRIVATE one */
hb_memvarCreateFromDynSymbol( hb_dynsymGet( szName ), VS_PRIVATE, pItem );
}
}
}
hb_fsClose( fhnd );
hb_memvarUpdatePrivatesBase();
hb_itemReturnRelease( pItem );
}
else
hb_retl( FALSE );
if( pError )
hb_itemRelease( pError );
}
else
/* NOTE: Undocumented error message in CA-Cl*pper 5.2e and 5.3x. [ckedem] */
hb_errRT_BASE( EG_ARG, 2007, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/*
* This is a hacking function which changes base private offset so
* PRIVATE variables created in function which calls __MVSETBASE()
* will not be released when the function exit but will be inherited
* by its caller. [druzus]
*/
HB_FUNC( __MVSETBASE )
{
HB_STACK_TLS_PRELOAD
long lOffset = hb_stackBaseProcOffset( 0 );
if( lOffset > 0 )
hb_stackItem( lOffset )->item.asSymbol.stackstate->ulPrivateBase =
hb_memvarGetPrivatesBase();
}
/* debugger function */
PHB_ITEM hb_memvarGetValueBySym( PHB_DYNS pDynSym )
{
return hb_dynsymGetMemvar( pDynSym );
}
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