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/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2008 by Sun Microsystems, Inc.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: string.c,v $
* $Revision: 1.19 $
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#if defined(_MSC_VER) && (_MSC_VER >= 1400)
#pragma warning(disable:4738) // storing 32-bit float result in memory, possible loss of performance
#endif
#include <rtl/memory.h>
#include <osl/interlck.h>
#include <rtl/alloc.h>
#include <osl/diagnose.h>
#include <rtl/tencinfo.h>
#include "strimp.h"
#include "surrogates.h"
#include <rtl/string.h>
#include "rtl/math.h"
#include "rtl/tencinfo.h"
/* ======================================================================= */
/* static data to be referenced by all empty strings
* the refCount is predefined to 1 and must never become 0 !
*/
static rtl_String const aImplEmpty_rtl_String =
{
SAL_STRING_STATIC_FLAG|1,
/* sal_Int32 refCount; */
0, /* sal_Int32 length; */
{ 0 } /* sal_Char buffer[1]; */
};
/* ======================================================================= */
#define IMPL_RTL_STRCODE sal_Char
#define IMPL_RTL_USTRCODE( c ) ((unsigned char)c)
#define IMPL_RTL_STRNAME( n ) rtl_str_ ## n
#define IMPL_RTL_STRINGNAME( n ) rtl_string_ ## n
#define IMPL_RTL_STRINGDATA rtl_String
#define IMPL_RTL_EMPTYSTRING aImplEmpty_rtl_String
/* ======================================================================= */
/* Include String/UString template code */
#include "strtmpl.c"
sal_Int32 SAL_CALL rtl_str_valueOfFloat(sal_Char * pStr, float f)
{
rtl_String * pResult = NULL;
sal_Int32 nLen;
rtl_math_doubleToString(
&pResult, 0, 0, f, rtl_math_StringFormat_G,
RTL_STR_MAX_VALUEOFFLOAT - RTL_CONSTASCII_LENGTH("-x.E-xxx"), '.', 0, 0,
sal_True);
nLen = pResult->length;
OSL_ASSERT(nLen < RTL_STR_MAX_VALUEOFFLOAT);
rtl_copyMemory(pStr, pResult->buffer, (nLen + 1) * sizeof(sal_Char));
rtl_string_release(pResult);
return nLen;
}
sal_Int32 SAL_CALL rtl_str_valueOfDouble(sal_Char * pStr, double d)
{
rtl_String * pResult = NULL;
sal_Int32 nLen;
rtl_math_doubleToString(
&pResult, 0, 0, d, rtl_math_StringFormat_G,
RTL_STR_MAX_VALUEOFDOUBLE - RTL_CONSTASCII_LENGTH("-x.E-xxx"), '.', 0,
0, sal_True);
nLen = pResult->length;
OSL_ASSERT(nLen < RTL_STR_MAX_VALUEOFDOUBLE);
rtl_copyMemory(pStr, pResult->buffer, (nLen + 1) * sizeof(sal_Char));
rtl_string_release(pResult);
return nLen;
}
float SAL_CALL rtl_str_toFloat(sal_Char const * pStr)
{
return (float) rtl_math_stringToDouble(pStr, pStr + rtl_str_getLength(pStr),
'.', 0, 0, 0);
}
double SAL_CALL rtl_str_toDouble(sal_Char const * pStr)
{
return rtl_math_stringToDouble(pStr, pStr + rtl_str_getLength(pStr), '.', 0,
0, 0);
}
/* ======================================================================= */
static int rtl_ImplGetFastUTF8ByteLen( const sal_Unicode* pStr, sal_Int32 nLen )
{
int n;
sal_Unicode c;
sal_uInt32 nUCS4Char;
const sal_Unicode* pEndStr;
n = 0;
pEndStr = pStr+nLen;
while ( pStr < pEndStr )
{
c = *pStr;
if ( c < 0x80 )
n++;
else if ( c < 0x800 )
n += 2;
else
{
if ( !SAL_RTL_IS_HIGH_SURROGATE(c) )
n += 3;
else
{
nUCS4Char = c;
if ( pStr+1 < pEndStr )
{
c = *(pStr+1);
if ( SAL_RTL_IS_LOW_SURROGATE(c) )
{
nUCS4Char = SAL_RTL_COMBINE_SURROGATES(nUCS4Char, c);
pStr++;
}
}
if ( nUCS4Char < 0x10000 )
n += 3;
else if ( nUCS4Char < 0x200000 )
n += 4;
else if ( nUCS4Char < 0x4000000 )
n += 5;
else
n += 6;
}
}
pStr++;
}
return n;
}
/* ----------------------------------------------------------------------- */
sal_Bool SAL_CALL rtl_impl_convertUStringToString(rtl_String ** pTarget,
sal_Unicode const * pSource,
sal_Int32 nLength,
rtl_TextEncoding nEncoding,
sal_uInt32 nFlags,
sal_Bool bCheckErrors)
{
OSL_ASSERT(pTarget != NULL
&& (pSource != NULL || nLength == 0)
&& nLength >= 0
&& rtl_isOctetTextEncoding(nEncoding));
if ( !nLength )
rtl_string_new( pTarget );
else
{
rtl_String* pTemp;
rtl_UnicodeToTextConverter hConverter;
sal_uInt32 nInfo;
sal_Size nSrcChars;
sal_Size nDestBytes;
sal_Size nNewLen;
sal_Size nNotConvertedChars;
sal_Size nMaxCharLen;
/* Optimization for UTF-8 - we try to calculate the exact length */
/* For all other encoding we try an good estimation */
if ( nEncoding == RTL_TEXTENCODING_UTF8 )
{
nNewLen = rtl_ImplGetFastUTF8ByteLen( pSource, nLength );
/* Includes the string only ASCII, then we could copy
the buffer faster */
if ( nNewLen == (sal_Size)nLength )
{
IMPL_RTL_STRCODE* pBuffer;
if ( *pTarget )
IMPL_RTL_STRINGNAME( release )( *pTarget );
*pTarget = IMPL_RTL_STRINGNAME( ImplAlloc )( nLength );
OSL_ASSERT(*pTarget != NULL);
pBuffer = (*pTarget)->buffer;
do
{
/* Check ASCII range */
OSL_ENSURE( *pSource <= 127,
"rtl_uString2String() - UTF8 test is encoding is wrong" );
*pBuffer = (IMPL_RTL_STRCODE)(unsigned char)*pSource;
pBuffer++;
pSource++;
nLength--;
}
while ( nLength );
return sal_True;
}
nMaxCharLen = 4;
}
else
{
rtl_TextEncodingInfo aTextEncInfo;
aTextEncInfo.StructSize = sizeof( aTextEncInfo );
if ( !rtl_getTextEncodingInfo( nEncoding, &aTextEncInfo ) )
{
aTextEncInfo.AverageCharSize = 1;
aTextEncInfo.MaximumCharSize = 8;
}
nNewLen = nLength*aTextEncInfo.AverageCharSize;
nMaxCharLen = aTextEncInfo.MaximumCharSize;
}
nFlags |= RTL_UNICODETOTEXT_FLAGS_FLUSH;
hConverter = rtl_createUnicodeToTextConverter( nEncoding );
for (;;)
{
pTemp = IMPL_RTL_STRINGNAME( ImplAlloc )( nNewLen );
OSL_ASSERT(pTemp != NULL);
nDestBytes = rtl_convertUnicodeToText( hConverter, 0,
pSource, nLength,
pTemp->buffer, nNewLen,
nFlags,
&nInfo, &nSrcChars );
if (bCheckErrors && (nInfo & RTL_UNICODETOTEXT_INFO_ERROR) != 0)
{
rtl_freeMemory(pTemp);
rtl_destroyUnicodeToTextConverter(hConverter);
return sal_False;
}
if ((nInfo & RTL_UNICODETOTEXT_INFO_DESTBUFFERTOSMALL) == 0)
break;
/* Buffer not big enough, try again with enough space */
rtl_freeMemory( pTemp );
/* Try with the max. count of characters with
additional overhead for replacing functionality */
nNotConvertedChars = nLength-nSrcChars;
nNewLen = nDestBytes+(nNotConvertedChars*nMaxCharLen)+nNotConvertedChars+4;
}
/* Set the buffer to the correct size or is there to
much overhead, reallocate to the correct size */
if ( nNewLen > nDestBytes+8 )
{
rtl_String* pTemp2 = IMPL_RTL_STRINGNAME( ImplAlloc )( nDestBytes );
OSL_ASSERT(pTemp2 != NULL);
rtl_str_ImplCopy( pTemp2->buffer, pTemp->buffer, nDestBytes );
rtl_freeMemory( pTemp );
pTemp = pTemp2;
}
else
{
pTemp->length = nDestBytes;
pTemp->buffer[nDestBytes] = 0;
}
rtl_destroyUnicodeToTextConverter( hConverter );
if ( *pTarget )
IMPL_RTL_STRINGNAME( release )( *pTarget );
*pTarget = pTemp;
/* Results the conversion in an empty buffer -
create an empty string */
if ( pTemp && !nDestBytes )
rtl_string_new( pTarget );
}
return sal_True;
}
void SAL_CALL rtl_uString2String( rtl_String** ppThis,
const sal_Unicode* pUStr,
sal_Int32 nULen,
rtl_TextEncoding eTextEncoding,
sal_uInt32 nCvtFlags )
{
rtl_impl_convertUStringToString(ppThis, pUStr, nULen, eTextEncoding,
nCvtFlags, sal_False);
}
sal_Bool SAL_CALL rtl_convertUStringToString(rtl_String ** pTarget,
sal_Unicode const * pSource,
sal_Int32 nLength,
rtl_TextEncoding nEncoding,
sal_uInt32 nFlags)
{
return rtl_impl_convertUStringToString(pTarget, pSource, nLength, nEncoding,
nFlags, sal_True);
}
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