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266 lines
8.8 KiB
C
266 lines
8.8 KiB
C
/*
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* Harbour Project source code:
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* DiskSpace() function
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*
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* Copyright 1999-2001 Viktor Szakats (harbour syenar.net)
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* www - http://harbour-project.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this software; see the file COPYING.txt. If not, write to
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* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
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* Boston, MA 02111-1307 USA (or visit the web site http://www.gnu.org/).
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*
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* As a special exception, the Harbour Project gives permission for
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* additional uses of the text contained in its release of Harbour.
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*
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* The exception is that, if you link the Harbour libraries with other
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* files to produce an executable, this does not by itself cause the
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* resulting executable to be covered by the GNU General Public License.
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* Your use of that executable is in no way restricted on account of
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* linking the Harbour library code into it.
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*
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* This exception does not however invalidate any other reasons why
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* the executable file might be covered by the GNU General Public License.
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*
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* This exception applies only to the code released by the Harbour
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* Project under the name Harbour. If you copy code from other
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* Harbour Project or Free Software Foundation releases into a copy of
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* Harbour, as the General Public License permits, the exception does
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* not apply to the code that you add in this way. To avoid misleading
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* anyone as to the status of such modified files, you must delete
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* this exception notice from them.
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*
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* If you write modifications of your own for Harbour, it is your choice
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* whether to permit this exception to apply to your modifications.
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* If you do not wish that, delete this exception notice.
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*
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*/
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/* NOTE: DiskSpace() supports larger disks than 2GB. CA-Cl*pper will always
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return a (long) value, Harbour may return a (double) for large
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values, the decimal places are always set to zero, though. */
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#include "hbapi.h"
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#include "hbapierr.h"
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#include "hbapifs.h"
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#if defined( HB_OS_UNIX )
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# include <unistd.h>
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# include <sys/types.h>
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# if defined( __WATCOMC__ ) || defined( __CEGCC__ ) || \
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defined( HB_OS_VXWORKS ) || defined( HB_OS_SYMBIAN )
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# include <sys/stat.h>
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# elif defined( HB_OS_ANDROID )
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# include <sys/statfs.h>
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# elif defined( HB_OS_DARWIN )
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# include <sys/param.h>
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# include <sys/mount.h>
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# else
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# include <sys/statvfs.h>
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# endif
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#elif defined( HB_OS_WIN )
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# include <windows.h>
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# include "hbwinuni.h"
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# if defined( HB_OS_WIN_CE )
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# include "hbwince.h"
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# endif
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#elif defined( HB_OS_OS2 )
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# define INCL_BASE
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# define INCL_DOSERRORS
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# include <os2.h>
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#elif defined( HB_OS_DOS )
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# include <dos.h>
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#endif
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HB_FUNC( DISKSPACE )
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{
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double dSpace = 0.0;
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HB_BOOL bError;
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#if defined( HB_OS_DOS )
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{
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int iDrive = hb_parni( 1 ); /* defaults to 0 */
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if( iDrive >= 0 )
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{
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union REGS regs;
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regs.HB_XREGS.dx = ( unsigned short int ) iDrive;
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regs.h.ah = 0x36;
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HB_DOS_INT86( 0x21, ®s, ®s );
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bError = regs.HB_XREGS.ax == 0xFFFF;
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if( ! bError )
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dSpace = ( double ) regs.HB_XREGS.bx *
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( double ) regs.HB_XREGS.ax *
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( double ) regs.HB_XREGS.cx;
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}
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else
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bError = HB_TRUE;
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}
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#elif defined( HB_OS_WIN )
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{
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#if defined( _MSC_VER ) || defined( __LCC__ ) || \
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( defined( __GNUC__ ) && ! defined( __RSXNT__ ) )
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# define HB_GET_LARGE_UINT( v ) ( ( double ) (v).LowPart + \
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( double ) (v).HighPart * \
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( ( ( double ) 0xFFFFFFFF ) + 1 ) )
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#else
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/* NOTE: Borland doesn't seem to deal with the un-named
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struct that is part of ULARGE_INTEGER
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[pt] */
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# define HB_GET_LARGE_UINT( v ) ( ( double ) (v).u.LowPart + \
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( double ) (v).u.HighPart * \
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( ( ( double ) 0xFFFFFFFF ) + 1 ) )
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#endif
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int iDrive = hb_parni( 1 );
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if( iDrive >= 0 )
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{
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ULARGE_INTEGER i64FreeBytesToCaller, i64TotalBytes, i64FreeBytes;
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UINT uiErrMode = SetErrorMode( SEM_FAILCRITICALERRORS );
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TCHAR lpPath[ 4 ];
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if( iDrive == 0 )
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iDrive = hb_fsCurDrv() + 1;
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lpPath[ 0 ] = ( TCHAR ) ( iDrive + 'A' - 1 );
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lpPath[ 1 ] = TEXT( ':' );
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lpPath[ 2 ] = TEXT( '\\' );
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lpPath[ 3 ] = TEXT( '\0' );
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#if defined( HB_OS_WIN_CE )
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bError = ! GetDiskFreeSpaceEx( lpPath,
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( PULARGE_INTEGER ) &i64FreeBytesToCaller,
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( PULARGE_INTEGER ) &i64TotalBytes,
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( PULARGE_INTEGER ) &i64FreeBytes );
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if( ! bError )
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dSpace = HB_GET_LARGE_UINT( i64FreeBytesToCaller );
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#else
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/* NOTE: We need to call this function dynamically to maintain support
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Win95 first edition. It was introduced in Win95B (aka OSR2) [vszakats] */
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{
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typedef BOOL ( WINAPI * P_GDFSE )( LPCTSTR, PULARGE_INTEGER,
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PULARGE_INTEGER, PULARGE_INTEGER );
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static P_GDFSE s_pGetDiskFreeSpaceEx = NULL;
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static HB_BOOL s_fInit = HB_FALSE;
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if( ! s_fInit )
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{
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s_pGetDiskFreeSpaceEx =
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( P_GDFSE )
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GetProcAddress( GetModuleHandle( HB_WINAPI_KERNEL32_DLL() ),
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HB_WINAPI_FUNCTION_NAME( "GetDiskFreeSpaceEx" ) );
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s_fInit = HB_TRUE;
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}
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if( s_pGetDiskFreeSpaceEx )
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{
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bError = s_pGetDiskFreeSpaceEx( lpPath,
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( PULARGE_INTEGER ) &i64FreeBytesToCaller,
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( PULARGE_INTEGER ) &i64TotalBytes,
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( PULARGE_INTEGER ) &i64FreeBytes ) ? HB_FALSE : HB_TRUE;
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if( ! bError )
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dSpace = HB_GET_LARGE_UINT( i64FreeBytesToCaller );
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}
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else
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{
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DWORD dwSectorsPerCluster;
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DWORD dwBytesPerSector;
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DWORD dwNumberOfFreeClusters;
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DWORD dwTotalNumberOfClusters;
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bError = GetDiskFreeSpace( lpPath,
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&dwSectorsPerCluster,
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&dwBytesPerSector,
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&dwNumberOfFreeClusters,
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&dwTotalNumberOfClusters ) ? HB_FALSE : HB_TRUE;
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if( ! bError )
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dSpace = ( double ) dwNumberOfFreeClusters *
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( double ) dwSectorsPerCluster *
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( double ) dwBytesPerSector;
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}
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}
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#endif
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SetErrorMode( uiErrMode );
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}
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else
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bError = HB_TRUE;
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}
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#elif defined( HB_OS_OS2 )
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{
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USHORT uiDrive = hb_parni( 1 ); /* defaults to 0 */
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struct _FSALLOCATE fsa;
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/* Query level 1 info from filesystem */
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bError = DosQueryFSInfo( uiDrive, 1, &fsa, sizeof( fsa ) ) != 0;
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if( ! bError )
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dSpace = ( double ) fsa.cUnitAvail *
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( double ) fsa.cSectorUnit *
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( double ) fsa.cbSector;
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}
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#elif defined( HB_OS_UNIX )
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{
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const char * szName = hb_parc( 1 );
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char * pszFree = NULL;
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if( ! szName )
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szName = "/";
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else
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szName = hb_fsNameConv( szName, &pszFree );
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{
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#if defined( __WATCOMC__ ) || defined( __CEGCC__ ) || defined( HB_OS_SYMBIAN )
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int iTODO;
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bError = HB_FALSE;
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#else
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#if defined( HB_OS_DARWIN ) || defined( HB_OS_ANDROID ) || \
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defined( HB_OS_VXWORKS )
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struct statfs st;
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bError = statfs( szName, &st ) != 0;
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#else
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struct statvfs st;
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bError = statvfs( szName, &st ) != 0;
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#endif
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if( ! bError )
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{
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#if ! defined( HB_OS_VXWORKS )
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if( getuid() == 0 )
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dSpace = ( double ) st.f_bfree * ( double ) st.f_bsize;
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else
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#endif
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dSpace = ( double ) st.f_bavail * ( double ) st.f_bsize;
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}
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#endif
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}
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if( pszFree )
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hb_xfree( pszFree );
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}
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#else
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bError = HB_FALSE;
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#endif
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if( bError )
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hb_errRT_BASE_Ext1( EG_OPEN, 2018, NULL, NULL, 0, EF_CANDEFAULT, HB_ERR_ARGS_BASEPARAMS );
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hb_retnlen( dSpace, -1, 0 );
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}
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