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harbour-core/contrib/hbct/fcopy.prg
Viktor Szakats 58faf91453 2016-01-14 19:17 UTC+0100 Viktor Szakats (vszakats users.noreply.github.com)
* *
    % remove brandings and homepage [1] from copyright header. Pass 1 - using script.
      [1] nobody has access to it anymore AFAIK - and it's also just
          a redirect since long
    ! update url in copyright header
    ; this should make the diff between 3.4 and 3.2 easier to manage
2016-01-14 19:18:17 +01:00

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/*
* CT3 file functions:
* FileCopy(), FileCOpen(), FileCCLose(), FileAppend()
*
* Author...: Frederic J. Bell
* Dated....: Jun,17 94
* Revised..: Sep,20 94
* Purpose..: Replaces the following CA-T*ols functions which generate GPF's
* FileCopy(), FileCOpen(), FileAppend()!
* Relies on: Clipper (can you believe it!)
* Compile..: /n /m /w /[/p /b /l] /es2
* Notes....:
* No copyright - released into the public domain NSA.
*
* Copyright 2007 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
*
* added FileCDaTi() and rewritten above functions for CT3 compatibility
* and some problems fixing,
*
* 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.txt. If not, write to
* the Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307 USA (or visit the web site https://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 "fileio.ch"
#define F_BLOCK 512
THREAD STATIC t_hSrcFile := F_ERROR
THREAD STATIC t_lSetDaTi := .T.
THREAD STATIC t_fileTime
/*
* FileCopy()
* This is a replacement for the CA-T*ols III function of the
* same name that causes GPF's.
*/
FUNCTION FileCopy( cSource, cDest, lMode )
LOCAL hDstFile
LOCAL cBuffer := Space( F_BLOCK )
LOCAL lDone := .F.
LOCAL nSrcBytes, nDstBytes, nTotBytes := 0
hb_default( @lMode, .F. )
IF t_hSrcFile != F_ERROR
FClose( t_hSrcFile )
ENDIF
t_hSrcFile := FOpen( cSource, FO_READ )
IF t_hSrcFile != F_ERROR
hDstFile := FCreate( cDest )
IF hDstFile != F_ERROR
DO WHILE .T.
nSrcBytes := FRead( t_hSrcFile, @cBuffer, F_BLOCK )
IF nSrcBytes == 0
lDone := .T.
EXIT
ENDIF
nDstBytes := FWrite( hDstFile, cBuffer, nSrcBytes )
IF nDstBytes > 0
nTotBytes += nDstBytes
ENDIF
IF nDstBytes < nSrcBytes
IF lMode
FSeek( t_hSrcFile, nDstBytes - nSrcBytes, FS_RELATIVE )
ENDIF
EXIT
ENDIF
ENDDO
FClose( hDstFile )
IF lDone .OR. ! lMode
FClose( t_hSrcFile )
t_hSrcFile := F_ERROR
ENDIF
hb_FGetDateTime( cSource, @t_fileTime )
IF t_lSetDaTi .and. !Empty( t_fileTime )
hb_FSetDateTime( cDest, t_fileTime )
ENDIF
ELSE
FClose( t_hSrcFile )
t_hSrcFile := F_ERROR
ENDIF
ENDIF
RETURN nTotBytes
FUNCTION FileCOpen()
RETURN t_hSrcFile != F_ERROR
FUNCTION FileCDaTi( lNewMode )
LOCAL lOldMode := t_lSetDaTi
IF HB_ISLOGICAL( lNewMode )
t_lSetDaTi := lNewMode
ENDIF
RETURN lOldMode
FUNCTION FileCCont( cDest )
LOCAL hDstFile
LOCAL cBuffer := Space( F_BLOCK )
LOCAL lDone := .F.
LOCAL nSrcBytes, nDstBytes, nTotBytes := 0
IF t_hSrcFile != F_ERROR
hDstFile := FCreate( cDest )
IF hDstFile != F_ERROR
DO WHILE .T.
nSrcBytes := FRead( t_hSrcFile, @cBuffer, F_BLOCK )
IF nSrcBytes == 0
lDone := .T.
EXIT
ENDIF
nDstBytes := FWrite( hDstFile, cBuffer, nSrcBytes )
IF nDstBytes > 0
nTotBytes += nDstBytes
ENDIF
IF nDstBytes < nSrcBytes
EXIT
ENDIF
ENDDO
FClose( hDstFile )
IF lDone
FClose( t_hSrcFile )
t_hSrcFile := F_ERROR
ENDIF
IF t_lSetDaTi .and. !Empty( t_fileTime )
hb_FSetDateTime( cDest, t_fileTime )
ENDIF
ENDIF
ENDIF
RETURN nTotBytes
FUNCTION FileCCLose()
IF t_hSrcFile != F_ERROR
FClose( t_hSrcFile )
t_hSrcFile := F_ERROR
RETURN .T.
ENDIF
RETURN .F.
FUNCTION FileAppend( cSrc, cDest )
LOCAL cBuffer := Space( F_BLOCK )
LOCAL hSrcFile, hDstFile
LOCAL nSrcBytes, nDstBytes, nTotBytes := 0
hSrcFile := FOpen( cSrc, FO_READ )
IF hSrcFile != F_ERROR
IF ! hb_FileExists( cDest )
hDstFile := FCreate( cDest )
ELSE
hDstFile := FOpen( cDest, FO_WRITE )
FSeek( hDstFile, 0, FS_END )
ENDIF
IF hDstFile != F_ERROR
DO WHILE .T.
nSrcBytes := FRead( hSrcFile, @cBuffer, F_BLOCK )
IF nSrcBytes == 0
EXIT
ENDIF
nDstBytes := FWrite( hDstFile, cBuffer, nSrcBytes )
IF nDstBytes < nSrcBytes
EXIT
ENDIF
nTotBytes += nDstBytes
ENDDO
FClose( hDstFile )
ENDIF
FClose( hSrcFile )
ENDIF
RETURN nTotBytes