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chruni.c
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chruni.c
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/*
* Binary and unicode string functions:
* hb_UChar(), hb_UCode(), hb_ULen(), hb_UPeek(), hb_UPoke()
* hb_BChar(), hb_BCode(), hb_BLen(), hb_BPeek(), hb_BPoke()
*
* Copyright 2012 Przemyslaw Czerpak < druzus /at/ priv.onet.pl >
*
* 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 "hbapi.h"
#include "hbapicdp.h"
#include "hbapiitm.h"
#include "hbapierr.h"
/* hb_UChar( <nCode> ) -> <cText>
* return string with U+nCode character in HVM CP encoding
*/
HB_FUNC( HB_UCHAR )
{
if( HB_ISNUM( 1 ) )
{
char szChar[ HB_MAX_CHAR_LEN ];
HB_SIZE nLen;
nLen = hb_cdpTextPutU16( hb_vmCDP(), szChar, sizeof( szChar ),
( HB_WCHAR ) hb_parni( 1 ) );
hb_retclen( szChar, nLen );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BChar( <nCode> ) -> <cText>
* return 1 byte string with <nCode> value
*/
HB_FUNC( HB_BCHAR )
{
if( HB_ISNUM( 1 ) )
{
char c = ( char ) hb_parni( 1 );
hb_retclen( &c, 1 );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_UCode( <cText> ) -> <nCode>
* return unicode value of 1-st character (not byte) in given string
*/
HB_FUNC( HB_UCODE )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText )
hb_retni( hb_cdpTextGetU16( hb_vmCDP(), hb_itemGetCPtr( pText ),
hb_itemGetCLen( pText ) ) );
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BCode( <cText> ) -> <nCode>
* return value of 1-st byte in given string
*/
HB_FUNC( HB_BCODE )
{
const char * szText = hb_parc( 1 );
if( szText )
hb_retni( ( HB_UCHAR ) szText[ 0 ] );
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_ULen( <cText> ) -> <nChars>
* return string length in characters
*/
HB_FUNC( HB_ULEN )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText )
hb_retns( hb_cdpTextLen( hb_vmCDP(), hb_itemGetCPtr( pText ),
hb_itemGetCLen( pText ) ) );
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BLen( <cText> ) -> <nBytes>
* return string length in bytes
*/
HB_FUNC( HB_BLEN )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText )
hb_retns( hb_itemGetCLen( pText ) );
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_UPeek( <cText>, <n> ) -> <nCode>
* return unicode value of <n>-th character in given string
*/
HB_FUNC( HB_UPEEK )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText && HB_ISNUM( 2 ) )
{
PHB_CODEPAGE cdp = hb_vmCDP();
const char * szText = hb_itemGetCPtr( pText );
HB_SIZE nLen = hb_itemGetCLen( pText );
HB_SIZE nPos = hb_parns( 2 );
HB_WCHAR wc = 0;
if( nPos > 0 && nPos <= nLen )
{
nPos = hb_cdpTextPos( cdp, szText, nLen, nPos - 1 );
nLen -= nPos;
if( nLen > 0 )
wc = hb_cdpTextGetU16( cdp, szText + nPos, nLen );
}
hb_retni( wc );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BPeek( <cText>, <n> ) -> <nCode>
* return value of <n>-th byte in given string
*/
HB_FUNC( HB_BPEEK )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText && HB_ISNUM( 2 ) )
{
HB_SIZE nPos = hb_parns( 2 );
hb_retni( ( nPos > 0 && nPos <= hb_itemGetCLen( pText ) ) ?
( HB_UCHAR ) hb_itemGetCPtr( pText )[ nPos - 1 ] : 0 );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_UPoke( [@]<cText>, <n>, <nVal> ) -> <cText>
* change <n>-th character in given string to unicode <nVal> one and return modified text
*/
HB_FUNC( HB_UPOKE )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText && HB_ISNUM( 2 ) && HB_ISNUM( 3 ) )
{
PHB_CODEPAGE cdp = hb_vmCDP();
const char * szText = hb_itemGetCPtr( pText );
HB_SIZE nLen = hb_itemGetCLen( pText );
HB_SIZE nPos = hb_parns( 2 );
if( nPos > 0 && nPos <= nLen )
{
nPos = hb_cdpTextPos( cdp, szText, nLen, nPos - 1 );
if( nPos < nLen )
{
char szChar[ HB_MAX_CHAR_LEN ], * pszText;
HB_SIZE nChar, nOldChar;
nChar = hb_cdpTextPutU16( cdp, szChar, sizeof( szChar ),
( HB_WCHAR ) hb_parni( 3 ) );
nOldChar = hb_cdpTextPos( cdp, szText + nPos, nLen - nPos, 1 );
if( nChar == nOldChar )
{
if( hb_itemGetWriteCL( pText, &pszText, &nLen ) &&
nPos + nChar <= nLen )
memcpy( pszText + nPos, szChar, nChar );
}
else
{
pszText = ( char * ) hb_xgrab( nLen - nOldChar + nChar + 1 );
memcpy( pszText, szText, nPos );
memcpy( pszText + nPos, szChar, nChar );
memcpy( pszText + nPos + nChar, szText + nPos + nOldChar,
nLen - nPos - nOldChar );
if( HB_ISBYREF( 1 ) )
hb_storclen( pszText, nLen - nOldChar + nChar, 1 );
hb_retclen_buffer( pszText, nLen - nOldChar + nChar );
return;
}
}
}
hb_itemReturn( pText );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BPoke( [@]<cText>, <n>, <nVal> ) -> <cText>
* change <n>-th byte in given string to <nVal> and return modified text
*/
HB_FUNC( HB_BPOKE )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText && HB_ISNUM( 2 ) && HB_ISNUM( 3 ) )
{
HB_SIZE nPos = hb_parns( 2 ), nLen;
char * pszText;
if( nPos > 0 && hb_itemGetWriteCL( pText, &pszText, &nLen ) &&
nPos <= nLen )
{
pszText[ nPos - 1 ] = ( char ) ( hb_parni( 3 ) & 0xff );
}
hb_itemReturn( pText );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1111, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_USubStr( <cString>, <nStart>, <nCount> ) -> <cSubstring>
*/
HB_FUNC( HB_USUBSTR )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
int iPCount = hb_pcount();
if( pText && HB_ISNUM( 2 ) && ( iPCount < 3 || HB_ISNUM( 3 ) ) )
{
PHB_CODEPAGE cdp = hb_vmCDP();
const char * pszText = hb_itemGetCPtr( pText );
HB_ISIZ nSize = hb_itemGetCLen( pText );
HB_ISIZ nFrom = hb_parns( 2 );
HB_ISIZ nCount = iPCount < 3 ? nSize : hb_parns( 3 );
if( nFrom > 0 )
{
if( --nFrom > nSize )
nCount = 0;
}
if( nCount > 0 )
{
if( nFrom < 0 )
nFrom += hb_cdpTextLen( cdp, pszText, nSize );
if( nFrom > 0 )
{
nFrom = hb_cdpTextPos( cdp, pszText, nSize, nFrom );
pszText += nFrom;
nSize -= nFrom;
}
nCount = hb_cdpTextPos( cdp, pszText, nSize, nCount );
}
if( nCount > 0 )
{
if( nFrom <= 0 && nCount == nSize )
hb_itemReturn( pText );
else
hb_retclen( pszText, nCount );
}
else
hb_retc_null();
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1110, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BSubStr( <cString>, <nStart>, <nCount> ) -> <cSubstring>
*/
HB_FUNC( HB_BSUBSTR )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
int iPCount = hb_pcount();
if( pText && HB_ISNUM( 2 ) && ( iPCount < 3 || HB_ISNUM( 3 ) ) )
{
const char * pszText = hb_itemGetCPtr( pText );
HB_ISIZ nSize = hb_itemGetCLen( pText );
HB_ISIZ nFrom = hb_parns( 2 );
HB_ISIZ nCount = iPCount < 3 ? nSize : hb_parns( 3 );
if( nFrom > 0 )
{
if( --nFrom > nSize )
nCount = 0;
}
if( nCount > 0 )
{
if( nFrom < 0 )
nFrom += nSize;
if( nFrom > 0 )
{
pszText += nFrom;
nSize -= nFrom;
}
if( nCount > nSize )
nCount = nSize;
}
if( nCount > 0 )
{
if( nFrom <= 0 && nCount == nSize )
hb_itemReturn( pText );
else
hb_retclen( pszText, nCount );
}
else
hb_retc_null();
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1110, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_ULeft( <cString>, <nCount> ) -> <cSubstring>
*/
HB_FUNC( HB_ULEFT )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText && HB_ISNUM( 2 ) )
{
HB_ISIZ nLen = hb_parns( 2 );
if( nLen <= 0 )
hb_retc_null();
else
{
HB_SIZE nText = hb_itemGetCLen( pText );
if( ( HB_SIZE ) nLen < nText )
nLen = hb_cdpTextPos( hb_vmCDP(), hb_itemGetCPtr( pText ), nText, nLen );
if( ( HB_SIZE ) nLen >= nText )
hb_itemReturn( pText );
else
hb_retclen( hb_itemGetCPtr( pText ), nLen );
}
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1124, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BLeft( <cString>, <nCount> ) -> <cSubstring>
*/
HB_FUNC( HB_BLEFT )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
if( pText && HB_ISNUM( 2 ) )
{
HB_ISIZ nLen = hb_parns( 2 );
if( nLen <= 0 )
hb_retc_null();
else
{
HB_SIZE nText = hb_itemGetCLen( pText );
if( ( HB_SIZE ) nLen >= nText )
hb_itemReturn( pText );
else
hb_retclen( hb_itemGetCPtr( pText ), nLen );
}
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1124, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_URight( <cString>, <nCount> ) -> <cSubstring>
*/
HB_FUNC( HB_URIGHT )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
HB_SIZE nText = hb_itemGetCLen( pText );
HB_ISIZ nLen = hb_parns( 2 );
if( nLen > 0 && nText > 0 )
{
if( ( HB_SIZE ) nLen < nText )
{
PHB_CODEPAGE cdp = hb_vmCDP();
HB_SIZE nChars = hb_cdpTextLen( cdp, hb_itemGetCPtr( pText ), nText );
if( nChars > ( HB_SIZE ) nLen )
nLen = nText - hb_cdpTextPos( cdp, hb_itemGetCPtr( pText ), nText, nChars - nLen );
else
nLen = nText;
}
if( ( HB_SIZE ) nLen >= nText )
hb_itemReturn( pText );
else
hb_retclen( hb_itemGetCPtr( pText ) + nText - nLen, nLen );
}
else
hb_retc_null();
}
/* hb_BRight( <cString>, <nCount> ) -> <cSubstring>
*/
HB_FUNC( HB_BRIGHT )
{
PHB_ITEM pText = hb_param( 1, HB_IT_STRING );
HB_SIZE nText = hb_itemGetCLen( pText );
HB_ISIZ nLen = hb_parns( 2 );
if( nLen > 0 && nText > 0 )
{
if( ( HB_SIZE ) nLen >= nText )
hb_itemReturn( pText );
else
hb_retclen( hb_itemGetCPtr( pText ) + nText - nLen, nLen );
}
else
hb_retc_null();
}
/* hb_UAt( <cSubString>, <cString>, [<nFrom>], [<nTo>] ) -> <nAt>
*/
HB_FUNC( HB_UAT )
{
PHB_ITEM pSub = hb_param( 1, HB_IT_STRING );
PHB_ITEM pText = hb_param( 2, HB_IT_STRING );
if( pText && pSub )
{
PHB_CODEPAGE cdp = hb_vmCDP();
const char * pszText = hb_itemGetCPtr( pText );
HB_SIZE nTextLength = hb_itemGetCLen( pText );
HB_SIZE nStart = hb_parns( 3 );
HB_SIZE nFrom, nTo, nPos = 0;
if( nStart <= 1 )
nStart = nFrom = 0;
else
nFrom = hb_cdpTextPos( cdp, pszText, nTextLength, --nStart );
if( nFrom < nTextLength )
{
pszText += nFrom;
nTextLength -= nFrom;
if( HB_ISNUM( 4 ) )
{
nTo = hb_parns( 4 );
if( nTo <= nStart )
nTo = 0;
else
{
nTo -= nStart;
nTo = hb_cdpTextPos( cdp, pszText, nTextLength, nTo );
if( nTo > nTextLength )
nTo = nTextLength;
}
}
else
nTo = nTextLength;
if( nTo > 0 )
{
nPos = hb_strAt( hb_itemGetCPtr( pSub ), hb_itemGetCLen( pSub ),
pszText, nTo );
if( nPos > 0 )
nPos = hb_cdpTextLen( cdp, pszText, nPos - 1 ) + 1 + nStart;
}
}
hb_retns( nPos );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1108, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BAt( <cSubString>, <cString>, [<nFrom>], [<nTo>] ) -> <nAt>
*/
HB_FUNC( HB_BAT )
{
PHB_ITEM pSub = hb_param( 1, HB_IT_STRING );
PHB_ITEM pText = hb_param( 2, HB_IT_STRING );
if( pText && pSub )
{
const char * pszText = hb_itemGetCPtr( pText );
HB_SIZE nTextLength = hb_itemGetCLen( pText );
HB_SIZE nStart = hb_parns( 3 );
HB_SIZE nFrom, nTo, nPos = 0;
if( nStart <= 1 )
nStart = nFrom = 0;
else
nFrom = --nStart;
if( nFrom < nTextLength )
{
pszText += nFrom;
nTextLength -= nFrom;
if( HB_ISNUM( 4 ) )
{
nTo = hb_parns( 4 );
if( nTo <= nStart )
nTo = 0;
else
{
nTo -= nStart;
if( nTo > nTextLength )
nTo = nTextLength;
}
}
else
nTo = nTextLength;
if( nTo > 0 )
{
nPos = hb_strAt( hb_itemGetCPtr( pSub ), hb_itemGetCLen( pSub ),
pszText, nTo );
if( nPos > 0 )
nPos += nFrom;
}
}
hb_retns( nPos );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1108, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}
/* hb_BRAt( <cSubString>, <cString>, [<nFrom>], [<nTo>] ) -> <nAt>
*/
HB_FUNC( HB_BRAT )
{
HB_SIZE nSubLen = hb_parclen( 1 );
HB_SIZE nPos = 0;
if( nSubLen )
{
HB_SIZE nLen = hb_parclen( 2 );
HB_ISIZ nTo = nLen - nSubLen;
if( nTo >= 0 )
{
const char * pszSub = hb_parc( 1 );
const char * pszText = hb_parc( 2 );
HB_ISIZ nStart = hb_parns( 3 );
HB_ISIZ nFrom;
if( nStart <= 1 )
nFrom = 0;
else
nFrom = --nStart;
if( nTo >= nFrom )
{
if( HB_ISNUM( 4 ) )
{
HB_ISIZ nEnd = hb_parns( 4 ) - nSubLen;
if( nEnd < nTo )
nTo = nEnd;
}
if( nTo >= nFrom )
{
do
{
if( pszText[ nTo ] == *pszSub &&
memcmp( pszSub, pszText + nTo, nSubLen ) == 0 )
{
nPos = nTo + 1;
break;
}
}
while( --nTo >= nFrom );
}
}
}
}
hb_retns( nPos );
}