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harbour-core/src/rtl/hbstrfmt.c
vszakats 9687850865 2013-03-16 02:10 UTC+0100 Viktor Szakats (harbour syenar.net)
* (all files)
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2013-03-16 02:11:42 +01:00

517 lines
14 KiB
C

/*
* Harbour Project source code:
* hb_StrFormat() functions
*
* Copyright 2008 Mindaugas Kavaliauskas <dbtopas at dbtopas.lt>
* 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 "hbapierr.h"
typedef struct
{
char * pData;
HB_SIZE nLen;
HB_SIZE nMax;
} BUFFERTYPE;
static void bufadd( BUFFERTYPE * pBuf, const char * pAdd, HB_SIZE nLen )
{
if( pBuf->nLen + nLen >= pBuf->nMax )
{
pBuf->nMax += ( pBuf->nMax >> 1 ) + nLen;
pBuf->pData = ( char * ) hb_xrealloc( pBuf->pData, pBuf->nMax );
}
memcpy( pBuf->pData + pBuf->nLen, pAdd, nLen );
pBuf->nLen += nLen;
pBuf->pData[ pBuf->nLen ] = '\0';
}
static void hb_itemHexStr( PHB_ITEM pItem, char * pStr, HB_BOOL fUpper )
{
HB_MAXUINT nValue, nTmp;
int iLen;
nValue = nTmp = hb_itemGetNInt( pItem );
iLen = 0;
do
{
++iLen;
nTmp >>= 4;
}
while( nTmp );
pStr[ iLen ] = '\0';
do
{
int iDigit = ( int ) ( nValue & 0x0F );
pStr[ --iLen ] = ( char ) ( iDigit + ( iDigit < 10 ? '0' :
( fUpper ? 'A' : 'a' ) - 10 ) );
nValue >>= 4;
}
while( iLen );
}
PHB_ITEM hb_strFormat( PHB_ITEM pItemReturn, PHB_ITEM pItemFormat, int iCount, PHB_ITEM * pItemArray )
{
BUFFERTYPE buffer;
PHB_ITEM pItem;
const char *pFmt, *pFmtEnd, *pFmtSave;
int i, iParam, iParamNo, iWidth, iDec;
HB_SIZE nSize;
HB_BOOL fLeftAlign, fForceSign, fPadZero, fSpaceSign, fSign;
pFmt = hb_itemGetCPtr( pItemFormat );
nSize = hb_itemGetCLen( pItemFormat );
pFmtEnd = pFmt + nSize;
buffer.nMax = nSize + 16;
buffer.nLen = 0;
buffer.pData = ( char * ) hb_xgrab( buffer.nMax );
buffer.pData[ 0 ] = '\0';
iParam = 0;
while( pFmt < pFmtEnd )
{
if( *pFmt != '%' )
{
bufadd( &buffer, pFmt++, 1 );
continue;
}
pFmtSave = pFmt;
if( ++pFmt >= pFmtEnd )
continue;
if( *pFmt == '%' )
{
bufadd( &buffer, pFmt++, 1 );
continue;
}
iWidth = iDec = -1;
fLeftAlign = fForceSign = fPadZero = fSpaceSign = 0;
/* parse parameter number */
iParamNo = 0;
while( HB_ISDIGIT( *pFmt ) )
iParamNo = iParamNo * 10 + *pFmt++ - '0';
if( iParamNo > 0 && *pFmt == '$' )
{
pFmt++;
}
else
{
iParamNo = -1;
pFmt = pFmtSave + 1;
}
/* Parse flags */
do
{
switch( *pFmt )
{
case '-':
fLeftAlign = 1;
continue;
case '+':
fForceSign = 1;
continue;
case ' ':
fSpaceSign = 1;
continue;
case '0':
fPadZero = 1;
continue;
}
break;
}
while( *++pFmt );
/* Parse width */
if( HB_ISDIGIT( *pFmt ) )
{
iWidth = 0;
while( HB_ISDIGIT( *pFmt ) )
iWidth = iWidth * 10 + *pFmt++ - '0';
}
/* Parse decimals */
if( *pFmt == '.' )
{
pFmt++;
iDec = 0;
if( HB_ISDIGIT( *pFmt ) )
{
while( HB_ISDIGIT( *pFmt ) )
iDec = iDec * 10 + *pFmt++ - '0';
}
}
/* Parse specifier */
if( *pFmt == 'c' || *pFmt == 'd' || *pFmt == 'x' || *pFmt == 'X' ||
*pFmt == 'f' || *pFmt == 's' )
{
if( iParamNo == -1 )
iParamNo = ++iParam;
pItem = ( iParamNo > iCount ) ? NULL : pItemArray[ iParamNo - 1 ];
}
else
pItem = NULL;
switch( *pFmt )
{
case 'c':
{
char buf[ 1 ];
buf[ 0 ] = ( char ) hb_itemGetNI( pItem );
if( fLeftAlign )
{
bufadd( &buffer, buf, 1 );
}
if( iWidth > 1 )
{
for( i = 1; i < iWidth; i++ )
bufadd( &buffer, " ", 1 );
}
if( ! fLeftAlign )
{
bufadd( &buffer, buf, 1 );
}
break;
}
case 'd':
case 'x':
case 'X':
{
char * pStr = NULL;
const char * pStr2;
int iSize, iExtra;
fSign = 0;
if( pItem && HB_IS_NUMERIC( pItem ) )
{
iSize = sizeof( HB_MAXINT ) * 3 + 1;
pStr2 = pStr = ( char * ) hb_xgrab( iSize + 1 );
if( *pFmt == 'd' )
hb_itemStrBuf( pStr, pItem, iSize, 0 );
else
hb_itemHexStr( pItem, pStr, *pFmt == 'X' );
while( *pStr2 == ' ' )
pStr2++;
iSize = ( int ) strlen( pStr2 );
if( *pStr2 == '-' )
{
fSign = 1;
iSize--;
pStr2++;
}
}
else if( pItem && HB_IS_LOGICAL( pItem ) )
{
iSize = 1;
if( hb_itemGetL( pItem ) )
pStr2 = "1";
else
pStr2 = "0";
}
else
{
iSize = 1;
pStr2 = "0";
}
iExtra = 0;
if( fForceSign || fSpaceSign || fSign )
iExtra = 1;
/* If decimals is set, zero padding flag is ignored */
if( iDec >= 0 )
fPadZero = 0;
if( fLeftAlign )
{
/* Zero padding is ignored on left Align */
/* ForceSign has priority over SpaceSign */
if( fSign )
bufadd( &buffer, "-", 1 );
else if( fForceSign )
bufadd( &buffer, "+", 1 );
else if( fSpaceSign )
bufadd( &buffer, " ", 1 );
for( i = iSize; i < iDec; i++ )
bufadd( &buffer, "0", 1 );
bufadd( &buffer, pStr2, ( HB_SIZE ) iSize );
if( iDec > iSize )
iSize = iDec;
for( i = iSize + iExtra; i < iWidth; i++ )
bufadd( &buffer, " ", 1 );
}
else
{
/* Right align */
if( fPadZero )
{
/* ForceSign has priority over SpaceSign */
if( fSign )
bufadd( &buffer, "-", 1 );
else if( fForceSign )
bufadd( &buffer, "+", 1 );
else if( fSpaceSign )
bufadd( &buffer, " ", 1 );
for( i = iSize + iExtra; i < iWidth; i++ )
bufadd( &buffer, "0", 1 );
bufadd( &buffer, pStr2, strlen( pStr2 ) );
}
else
{
for( i = ( iSize > iDec ? iSize : iDec ) + iExtra; i < iWidth; i++ )
bufadd( &buffer, " ", 1 );
/* ForceSign has priority over SpaceSign */
if( fSign )
bufadd( &buffer, "-", 1 );
else if( fForceSign )
bufadd( &buffer, "+", 1 );
else if( fSpaceSign )
bufadd( &buffer, " ", 1 );
for( i = iSize; i < iDec; i++ )
bufadd( &buffer, "0", 1 );
bufadd( &buffer, pStr2, ( HB_SIZE ) iSize );
}
}
if( pStr )
hb_xfree( pStr );
break;
}
case 'f':
{
char * pStr = NULL;
const char * pStr2;
int iSize, iExtra, iD;
if( pItem && HB_IS_NUMERIC( pItem ) )
{
hb_itemGetNLen( pItem, &iSize, &iD );
if( iDec != -1 )
{
iSize += iDec - iD + 1;
iD = iDec;
}
/* Let 255 be a limit for number length */
if( iSize > 255 )
iSize = 255;
if( iD > 253 )
iD = 253;
if( iSize < iD + 2 )
iSize = iD + 2;
pStr2 = pStr = ( char * ) hb_xgrab( iSize + 1 );
hb_itemStrBuf( pStr, pItem, iSize, iD );
if( pStr[ 0 ] == '*' && iSize < 255 )
{
pStr2 = pStr = ( char * ) hb_xrealloc( pStr, 256 );
hb_itemStrBuf( pStr, pItem, 255, iD );
}
while( *pStr2 == ' ' )
pStr2++;
iSize = ( int ) strlen( pStr2 );
}
else
{
iSize = 1;
pStr2 = "0";
}
iExtra = 0;
if( ( fForceSign || fSpaceSign ) && *pStr2 != '-' )
iExtra = 1;
if( fLeftAlign )
{
/* Zero padding is ignored on left Align */
if( *pStr2 != '-' )
{
/* ForceSign has priority over SpaceSign */
if( fForceSign )
bufadd( &buffer, "+", 1 );
else
{
if( fSpaceSign )
bufadd( &buffer, " ", 1 );
}
}
bufadd( &buffer, pStr2, ( HB_SIZE ) iSize );
for( i = iSize + iExtra; i < iWidth; i++ )
bufadd( &buffer, " ", 1 );
}
else
{
/* Right align */
if( fPadZero )
{
if( *pStr2 == '-' )
{
bufadd( &buffer, pStr2++, 1 );
}
else
{
/* ForceSign has priority over SpaceSign */
if( fForceSign )
bufadd( &buffer, "+", 1 );
else
{
if( fSpaceSign )
bufadd( &buffer, " ", 1 );
}
}
for( i = iSize + iExtra; i < iWidth; i++ )
bufadd( &buffer, "0", 1 );
bufadd( &buffer, pStr2, strlen( pStr2 ) );
}
else
{
for( i = iSize + iExtra; i < iWidth; i++ )
bufadd( &buffer, " ", 1 );
if( *pStr2 != '-' )
{
/* ForceSign has priority over SpaceSign */
if( fForceSign )
bufadd( &buffer, "+", 1 );
else
{
if( fSpaceSign )
bufadd( &buffer, " ", 1 );
}
}
bufadd( &buffer, pStr2, ( HB_SIZE ) iSize );
}
}
if( pStr )
hb_xfree( pStr );
break;
}
case 's':
{
const char * pStr = hb_itemGetCPtr( pItem );
nSize = hb_itemGetCLen( pItem );
if( iDec >= 0 )
{
if( ( HB_SIZE ) iDec < nSize )
nSize = iDec;
}
if( fLeftAlign )
bufadd( &buffer, pStr, nSize );
if( iWidth > 1 )
{
for( i = ( int ) nSize; i < iWidth; i++ )
bufadd( &buffer, " ", 1 );
}
if( ! fLeftAlign )
bufadd( &buffer, pStr, nSize );
break;
}
default:
bufadd( &buffer, pFmtSave, pFmt - pFmtSave + 1 );
}
pFmt++;
}
pItemReturn = hb_itemPutCL( pItemReturn, buffer.pData, buffer.nLen );
hb_xfree( buffer.pData );
return pItemReturn;
}
HB_FUNC( HB_STRFORMAT )
{
PHB_ITEM pFormat = hb_param( 1, HB_IT_STRING );
int i, iParams = hb_pcount();
PHB_ITEM * pItemArray = NULL;
if( pFormat )
{
if( iParams > 1 )
{
pItemArray = ( PHB_ITEM * ) hb_xgrab( ( iParams - 1 ) * sizeof( PHB_ITEM ) );
for( i = 1; i < iParams; i++ )
pItemArray[ i - 1 ] = hb_param( i + 1, HB_IT_ANY );
}
hb_itemReturnRelease( hb_strFormat( NULL, pFormat, iParams - 1, pItemArray ) );
if( iParams > 1 )
hb_xfree( pItemArray );
}
else
hb_errRT_BASE_SubstR( EG_ARG, 1099, NULL, HB_ERR_FUNCNAME, HB_ERR_ARGS_BASEPARAMS );
}