Files
harbour-core/src/rtl/mlcfunc.c
Przemysław Czerpak db11c4a1cf 2015-10-06 12:37 UTC+0200 Przemyslaw Czerpak (druzus/at/poczta.onet.pl)
* src/rtl/hbbfsock.c
    ! typo in comment

  * src/rtl/mlcfunc.c
    * casting

  * src/rtl/memoedit.prg
  * src/rtl/teditor.prg
    * formatting and few modifications to reduce some differences between
      core and Viktor's branch
2015-10-06 12:37:29 +02:00

707 lines
19 KiB
C

/*
* Harbour Project source code:
* memo line functions: MemoLine(), MLCount(), MLPos(), MLCToPos(), MPosToLC()
*
* Copyright 2012 Przemyslaw Czerpak <druzus / at / priv.onet.pl>
* www - http://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.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 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 "hbapi.h"
#include "hbapiitm.h"
#include "hbapicdp.h"
#include "hbset.h"
#include "hbvm.h"
#define HB_EOL_BUFFER_SIZE 4
typedef struct
{
const char * szEOL;
HB_SIZE nLen;
} HB_EOL_INFO, * PHB_EOL_INFO;
typedef struct
{
const char * pszString;
HB_SIZE nLen;
HB_SIZE nLineLength;
HB_SIZE nTabSize;
HB_BOOL fWordWrap;
int iEOLs;
PHB_EOL_INFO pEOLs;
PHB_CODEPAGE cdp;
HB_SIZE nOffset;
HB_SIZE nMaxCol;
HB_SIZE nMaxPos;
HB_SIZE nCol;
HB_EOL_INFO EOL_buffer[ HB_EOL_BUFFER_SIZE ];
}
HB_MLC_INFO, * PHB_MLC_INFO;
static void hb_mlGetEOLs( PHB_MLC_INFO pMLC, int iParam )
{
int iEOLs = 0;
HB_SIZE nLen;
pMLC->pEOLs = pMLC->EOL_buffer;
/* NOTE: This is a parameter extension (HB_EXTENSION) which breaks
our effort to keep strict parameter compatibility with
Clipper 5.x. In this case we've resorted to a compromise
because there was no other idea which seemed natural enough.
Clipper will ignore these parameters and use CRLF EOL hard
coded. [vszakats] */
#ifndef HB_CLP_STRICT /* HB_EXTENSION */
nLen = hb_parclen( iParam );
if( nLen )
{
pMLC->pEOLs[ 0 ].szEOL = hb_parc( iParam );
pMLC->pEOLs[ 0 ].nLen = nLen;
iEOLs = 1;
}
else if( HB_ISARRAY( iParam ) )
{
PHB_ITEM pArray = hb_param( iParam, HB_IT_ARRAY );
HB_SIZE nSize = hb_arrayLen( pArray ), n;
for( n = 1; n <= nSize; ++n )
{
if( hb_arrayGetCLen( pArray, n ) > 0 )
++iEOLs;
}
if( iEOLs )
{
if( iEOLs > HB_EOL_BUFFER_SIZE )
pMLC->pEOLs = ( PHB_EOL_INFO ) hb_xgrab( sizeof( HB_EOL_INFO ) * iEOLs );
iEOLs = 0;
for( n = 1; n <= nSize; ++n )
{
nLen = hb_arrayGetCLen( pArray, n );
if( nLen > 0 )
{
pMLC->pEOLs[ iEOLs ].szEOL = hb_arrayGetCPtr( pArray, n );
pMLC->pEOLs[ iEOLs ].nLen = nLen;
++iEOLs;
}
}
}
}
#else
HB_SYMBOL_UNUSED( iParam );
HB_SYMBOL_UNUSED( nLen );
#endif
if( iEOLs == 0 )
{
pMLC->pEOLs[ 0 ].szEOL = hb_setGetEOL();
if( ! pMLC->pEOLs[ 0 ].szEOL || ! pMLC->pEOLs[ 0 ].szEOL[ 0 ] )
pMLC->pEOLs[ 0 ].szEOL = hb_conNewLine();
pMLC->pEOLs[ 0 ].nLen = strlen( pMLC->pEOLs[ 0 ].szEOL );
iEOLs = pMLC->pEOLs[ 0 ].nLen ? 1 : 0;
}
pMLC->iEOLs = iEOLs;
}
static HB_BOOL hb_mlInit( PHB_MLC_INFO pMLC, int iParAdd )
{
HB_ISIZ nSize = hb_parnsdef( 2, 79 );
pMLC->pszString = hb_parc( 1 );
if( pMLC->pszString && nSize > 0 )
{
pMLC->nOffset = pMLC->nMaxCol = pMLC->nMaxPos = pMLC->nCol = 0;
pMLC->nLineLength = nSize;
pMLC->nLen = hb_parclen( 1 );
pMLC->nTabSize = hb_parnsdef( 3 + iParAdd, 4 );
pMLC->fWordWrap = hb_parldef( 4 + iParAdd, 1 );
#ifdef HB_CLP_STRICT
if( pMLC->nLineLength > 254 )
pMLC->nLineLength = 79;
#endif
if( pMLC->nTabSize >= pMLC->nLineLength )
pMLC->nTabSize = pMLC->nLineLength - 1;
if( pMLC->nTabSize == 0 )
pMLC->nTabSize = 1;
pMLC->cdp = hb_vmCDP();
if( ! HB_CDP_ISCHARIDX( pMLC->cdp ) )
pMLC->cdp = NULL;
hb_mlGetEOLs( pMLC, 5 + iParAdd );
return HB_TRUE;
}
return HB_FALSE;
}
static void hb_mlExit( PHB_MLC_INFO pMLC )
{
if( pMLC->iEOLs > HB_EOL_BUFFER_SIZE )
hb_xfree( pMLC->pEOLs );
}
static int hb_mlEol( PHB_MLC_INFO pMLC )
{
const char * pszString = pMLC->pszString + pMLC->nOffset;
HB_SIZE nLen = pMLC->nLen - pMLC->nOffset;
PHB_EOL_INFO pEOLs = pMLC->pEOLs;
int i;
for( i = 0; i < pMLC->iEOLs; ++i )
{
if( pszString[ 0 ] == pEOLs[ i ].szEOL[ 0 ] &&
( pEOLs[ i ].nLen == 1 ||
( nLen >= pEOLs[ i ].nLen &&
memcmp( pszString, pEOLs[ i ].szEOL, pEOLs[ i ].nLen ) == 0 ) ) )
return i;
}
return -1;
}
static HB_SIZE hb_mlGetLine( PHB_MLC_INFO pMLC )
{
HB_SIZE nBlankCol = 0, nBlankPos = 0, nLastCol = 0, nLastPos;
int i;
pMLC->nCol = 0;
if( pMLC->nOffset >= pMLC->nLen )
return HB_FALSE;
while( pMLC->nOffset < pMLC->nLen )
{
HB_WCHAR ch;
if( pMLC->pszString[ pMLC->nOffset ] == HB_CHAR_SOFT1 &&
pMLC->pszString[ pMLC->nOffset + 1 ] == HB_CHAR_SOFT2 )
{
if( pMLC->nMaxCol && pMLC->nCol )
break;
if( pMLC->nOffset < pMLC->nMaxPos )
nLastCol = pMLC->nCol;
pMLC->nOffset += 2;
if( ! pMLC->fWordWrap )
break;
else if( nBlankPos + 2 == pMLC->nOffset )
nBlankPos += 2;
continue;
}
i = hb_mlEol( pMLC );
if( i >= 0 )
{
if( pMLC->nOffset < pMLC->nMaxPos )
nLastCol = pMLC->nCol;
if( pMLC->nMaxCol == 0 )
pMLC->nOffset += pMLC->pEOLs[ i ].nLen;
break;
}
else if( ! pMLC->fWordWrap && pMLC->nCol >= pMLC->nLineLength )
break;
nLastPos = pMLC->nOffset;
if( pMLC->cdp )
{
if( ! HB_CDPCHAR_GET( pMLC->cdp, pMLC->pszString, pMLC->nLen, &pMLC->nOffset, &ch ) )
break;
}
else
ch = pMLC->pszString[ pMLC->nOffset++ ];
if( pMLC->nOffset <= pMLC->nMaxPos )
nLastCol = pMLC->nCol;
pMLC->nCol += ch == HB_CHAR_HT ?
pMLC->nTabSize - ( pMLC->nCol % pMLC->nTabSize ) : 1;
if( pMLC->nMaxCol && pMLC->nCol >= pMLC->nMaxCol )
{
if( pMLC->nCol > pMLC->nMaxCol )
pMLC->nOffset = nLastPos;
break;
}
else if( pMLC->nCol > pMLC->nLineLength )
{
if( pMLC->fWordWrap )
{
if( ch == ' ' || ch == HB_CHAR_HT )
break;
else if( nBlankCol != 0 )
{
pMLC->nCol = nBlankCol;
pMLC->nOffset = nBlankPos;
}
else
pMLC->nOffset = nLastPos;
}
else
pMLC->nOffset = nLastPos;
break;
}
if( pMLC->nCol > 1 && ( ch == ' ' || ch == HB_CHAR_HT ) )
{
nBlankCol = pMLC->nCol;
nBlankPos = pMLC->nOffset;
}
}
if( pMLC->nMaxPos && pMLC->nCol > nLastCol )
pMLC->nCol = nLastCol;
else if( pMLC->nCol > pMLC->nLineLength )
pMLC->nCol = pMLC->nLineLength;
return HB_TRUE;
}
/* MemoLine( <cString>, [ <nLineLength>=79 ],
* [ <nLineNumber>=1 ],
* [ <nTabSize>=4 ], [ <lWrap>=.T. ],
* [ <cEOL>|<acEOLs> ],
* [ <lPad>=.T. ] ) -> <cLine>
*
* NOTE: <lPad> is undocumented parameter and will be removed and
* replaced by other solution in the future.
*/
HB_FUNC( MEMOLINE )
{
HB_MLC_INFO MLC;
HB_ISIZ nLine = hb_parnsdef( 3, 1 );
HB_BOOL fPad = hb_parldef( 7, 1 );
char * szLine = NULL;
HB_SIZE nIndex, nLen = 0, nSize, nCol;
if( nLine >= 1 )
{
if( hb_mlInit( &MLC, 1 ) )
{
while( --nLine )
{
if( ! hb_mlGetLine( &MLC ) )
break;
}
if( nLine == 0 )
{
nIndex = MLC.nOffset;
/* CA-Cl*pper also does not check if line exists and always
* fill one line more, i.e.:
* for i := 0 to 4
* ? "[" + MemoLine( " ", 20, i ) + "]"
* next
* [druzus]
*/
hb_mlGetLine( &MLC );
if( MLC.cdp )
nSize = ( MLC.nOffset - nIndex ) + MLC.nLineLength;
else
nSize = MLC.nLineLength;
szLine = ( char * ) hb_xgrab( nSize + 1 );
nCol = 0;
while( nIndex < MLC.nLen && nCol < MLC.nCol )
{
if( MLC.pszString[ nIndex ] == HB_CHAR_SOFT1 &&
MLC.pszString[ nIndex + 1 ] == HB_CHAR_SOFT2 )
nIndex += 2 ;
else
{
HB_WCHAR wc;
if( MLC.cdp )
{
if( ! HB_CDPCHAR_GET( MLC.cdp, MLC.pszString, MLC.nLen, &nIndex, &wc ) )
break;
}
else
wc = MLC.pszString[ nIndex++ ];
if( wc == HB_CHAR_HT )
{
HB_SIZE n = MLC.nTabSize - ( nLen % MLC.nTabSize );
do
{
szLine[ nLen++ ] = ' ';
}
while( ++nCol < MLC.nCol && --n );
}
else
{
if( MLC.cdp )
{
if( ! HB_CDPCHAR_PUT( MLC.cdp, szLine, nSize, &nLen, wc ) )
break;
}
else
szLine[ nLen++ ] = ( char ) wc;
++nCol;
}
}
}
if( nCol < MLC.nLineLength )
{
nCol = MLC.nLineLength - nCol;
if( nCol > nSize - nLen )
nCol = nSize - nLen;
if( ! fPad && nCol > 0 )
nCol = nIndex < MLC.nLen &&
( MLC.pszString[ nIndex ] == ' ' ||
MLC.pszString[ nIndex ] == HB_CHAR_HT ) ? 1 : 0;
if( nCol > 0 )
{
memset( szLine + nLen, ' ', nCol );
nLen += nCol;
}
}
}
hb_mlExit( &MLC );
}
}
if( szLine == NULL )
hb_retc_null();
else
hb_retclen_buffer( szLine, nLen );
}
/* MLCount( <cString>, [ <nLineLength>=79 ],
* [ <nTabSize>=4 ], [ <lWrap>=.T. ],
* [ <cEOL>|<acEOLs> ] ) -> <nLines>
*/
HB_FUNC( MLCOUNT )
{
HB_MLC_INFO MLC;
HB_SIZE nLines = 0;
if( hb_mlInit( &MLC, 0 ) )
{
while( hb_mlGetLine( &MLC ) )
++nLines;
hb_mlExit( &MLC );
}
hb_retns( nLines );
}
/* MLPos( <cString>, [ <nLineLength>=79 ],
* [ <nLineNumber>=1 ],
* [ <nTabSize>=4 ], [ <lWrap>=.T. ],
* [ <cEOL>|<acEOLs> ] ) -> <nLinePos>
*/
HB_FUNC( MLPOS )
{
HB_MLC_INFO MLC;
HB_ISIZ nLine = hb_parnsdef( 3, 1 );
HB_SIZE nOffset = 0;
if( nLine >= 1 )
{
if( hb_mlInit( &MLC, 1 ) )
{
while( --nLine )
{
if( ! hb_mlGetLine( &MLC ) )
break;
}
if( nLine <= 1 )
{
nOffset = MLC.nOffset;
if( MLC.cdp )
nOffset = hb_cdpTextLen( MLC.cdp, MLC.pszString, nOffset );
if( MLC.nOffset < MLC.nLen )
++nOffset;
}
hb_mlExit( &MLC );
}
}
hb_retns( nOffset );
}
/* MLCToPos( <cString>, [ <nLineLength>=79 ],
* [ <nLine>=1 ], [ <nCol>=0 ],
* [ <nTabSize>=4 ], [ <lWrap>=.T. ],
* [ <cEOL>|<acEOLs> ] ) -> <nPos>
*/
HB_FUNC( MLCTOPOS )
{
HB_SIZE nLine = hb_parns( 3 );
HB_SIZE nCol = hb_parns( 4 );
HB_SIZE nOffset = 0;
if( nLine > 0 && HB_ISNUM( 4 ) )
{
HB_MLC_INFO MLC;
if( hb_mlInit( &MLC, 2 ) )
{
if( MLC.nLineLength > 4 )
{
while( --nLine )
{
if( ! hb_mlGetLine( &MLC ) )
break;
}
if( nCol && nLine == 0 )
{
MLC.nMaxCol = nCol;
MLC.nLineLength = nCol;
hb_mlGetLine( &MLC );
}
nOffset = MLC.nOffset;
if( MLC.cdp )
nOffset = hb_cdpTextLen( MLC.cdp, MLC.pszString, nOffset );
}
hb_mlExit( &MLC );
}
}
hb_retns( nOffset + 1 );
}
/* MPosToLC( <cString>, [ <nLineLength>=79 ],
* [ <nPos>=1 ],
* [ <nTabSize>=4 ], [ <lWrap>=.T. ],
* [ <cEOL>|<acEOLs> ] ) -> <aLineCol>
*/
HB_FUNC( MPOSTOLC )
{
HB_ISIZ nPos = hb_parns( 3 );
HB_SIZE nLine = 0;
HB_SIZE nCol = 0;
if( nPos > 0 )
{
HB_MLC_INFO MLC;
if( hb_mlInit( &MLC, 1 ) )
{
if( MLC.cdp )
{
HB_SIZE nRest = nPos;
nPos = hb_cdpTextPosEx( MLC.cdp, MLC.pszString, MLC.nLen, &nRest );
nPos += nRest;
}
MLC.nMaxPos = nPos;
if( MLC.nMaxPos <= MLC.nLen + 1 )
{
for( ;; )
{
HB_SIZE nOffset = MLC.nOffset;
hb_mlGetLine( &MLC );
nCol = MLC.nCol;
++nLine;
if( MLC.nOffset == nOffset || MLC.nOffset >= MLC.nMaxPos )
break;
}
}
hb_mlExit( &MLC );
}
}
hb_reta( 2 );
hb_storvns( nLine, -1, 1 );
hb_storvns( nCol, -1, 2 );
}
/* hb_MLEval( <cString>, <bCode>, [ <nLineLength>=79 ],
* [ <nTabSize>=4 ], [ <lWrap>=.T. ],
* [ <nPos> ], [ @<nRow> ], [ @<nCol> ] ) -> <nLines>
*/
HB_FUNC( HB_MLEVAL )
{
const char * pszString = hb_parc( 1 );
PHB_ITEM pBlock = hb_param( 2, HB_IT_EVALITEM );
HB_ISIZ nSize = hb_parnsdef( 3, 79 );
HB_SIZE nRowPos = 0, nColPos = 0, nLines = 0;
if( pszString && pBlock && nSize > 0 )
{
HB_SIZE nOffset = 0;
HB_SIZE nLineLength = nSize;
HB_SIZE nLen = hb_parclen( 1 );
HB_SIZE nTabSize = hb_parnsdef( 4, 4 );
HB_SIZE nPos = hb_parns( 6 ) - 1;
HB_BOOL fWordWrap = hb_parldef( 5, 1 );
PHB_CODEPAGE cdp = hb_vmCDP();
PHB_ITEM pLineItem = NULL, pSoftItem = NULL;
HB_BOOL fSoftCR;
char * pszLine;
if( ! HB_CDP_ISCHARIDX( cdp ) )
cdp = NULL;
#ifdef HB_CLP_STRICT
if( nLineLength > 254 )
nLineLength = 79;
#else
if( nLineLength > 0xFFFF )
nLineLength = 0xFFFF;
#endif
if( nTabSize >= nLineLength )
nTabSize = nLineLength - 1;
if( nTabSize == 0 )
nTabSize = 1;
pszLine = ( char * ) hb_xgrab( nLineLength + 1 );
do
{
HB_SIZE nBlankCol = 0, nBlankPos = 0, nBlankDst = 0, nCol = 0, nDst = 0;
fSoftCR = HB_FALSE;
++nLines;
do
{
HB_SIZE nRepl;
HB_WCHAR ch;
if( pszString[ nOffset ] == HB_CHAR_SOFT1 &&
pszString[ nOffset + 1 ] == HB_CHAR_SOFT2 )
{
nOffset += 2;
if( fWordWrap )
continue;
break;
}
else if( pszString[ nOffset ] == HB_CHAR_CR )
{
++nOffset;
if( pszString[ nOffset ] == HB_CHAR_LF )
++nOffset;
break;
}
else if( pszString[ nOffset ] == HB_CHAR_LF )
{
++nOffset;
if( pszString[ nOffset ] == HB_CHAR_CR )
++nOffset;
break;
}
if( cdp )
{
if( ! HB_CDPCHAR_GET( cdp, pszString, nLen, &nOffset, &ch ) )
continue;
if( ! HB_CDPCHAR_PUT( cdp, pszLine, nLineLength + 1, &nDst, ch ) )
break;
}
else
ch = pszLine[ nDst++ ] = pszString[ nOffset++ ];
if( nRowPos == 0 && nOffset > nPos )
{
nRowPos = nLines;
nColPos = nCol;
}
if( ch == ' ' || ch == HB_CHAR_HT )
{
nBlankPos = nOffset;
nBlankCol = nCol;
nBlankDst = nDst;
}
nRepl = ch == HB_CHAR_HT ? nTabSize - ( nCol % nTabSize ) -1 : 0;
for( ;; )
{
if( ++nCol >= nLineLength )
{
if( fWordWrap && nBlankCol > 0 )
{
nOffset = nBlankPos;
nCol = nBlankCol;
nDst = nBlankDst;
if( nOffset <= nPos )
nRowPos = nColPos = 0;
}
fSoftCR = HB_TRUE;
break;
}
if( nRepl-- == 0 )
break;
if( !cdp )
pszLine[ nDst++ ] = ( char ) ch;
else if( ! HB_CDPCHAR_PUT( cdp, pszLine, nLineLength + 1, &nDst, ch ) )
break;
}
}
while( ! fSoftCR && nOffset < nLen );
if( nRowPos == 0 && nOffset >= nPos && ! fSoftCR )
{
nRowPos = nLines;
nColPos = nCol;
}
pLineItem = hb_itemPutCL( pLineItem, pszLine, nDst );
pSoftItem = hb_itemPutL( pSoftItem, fSoftCR );
hb_vmEvalBlockV( pBlock, 2, pLineItem, pSoftItem );
}
while( nOffset < nLen && hb_vmRequestQuery() == 0 );
if( nRowPos == 0 && nOffset >= nPos )
{
nRowPos = nLines + 1;
nColPos = 0;
}
if( fSoftCR )
{
pLineItem = hb_itemPutC( pLineItem, NULL );
pSoftItem = hb_itemPutL( pSoftItem, HB_FALSE );
hb_vmEvalBlockV( pBlock, 2, pLineItem, pSoftItem );
}
hb_itemRelease( pLineItem );
hb_itemRelease( pSoftItem );
hb_xfree( pszLine );
}
if( hb_vmRequestQuery() == 0 )
{
hb_storns( nRowPos, 7 );
hb_storns( nColPos, 8 );
hb_retns( nLines );
}
}