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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#ifdef DBG_UTIL
static sal_Bool ImplDbgCheckAsciiStr( const sal_Char* pAsciiStr, sal_Int32 nLen )
{
while ( nLen && *pAsciiStr )
{
if ( ((unsigned char)*pAsciiStr) > 127 )
return sal_False;
++pAsciiStr,
--nLen;
}
return sal_True;
}
#endif
static void ImplCopyAsciiStr( sal_Unicode* pDest, const sal_Char* pSrc,
sal_Int32 nLen )
{
DBG_ASSERT( ImplDbgCheckAsciiStr( pSrc, nLen ),
"UniString::CopyAsciiStr() - pAsciiStr include characters > 127" );
while ( nLen )
{
*pDest = (unsigned char)*pSrc;
++pDest,
++pSrc,
--nLen;
}
}
static sal_Int32 ImplStringCompareAscii( const sal_Unicode* pStr1, const sal_Char* pStr2,
xub_StrLen nCount )
{
sal_Int32 nRet = 0;
while ( nCount &&
((nRet = ((sal_Int32)*pStr1)-((sal_Int32)((unsigned char)*pStr2))) == 0) &&
*pStr2 )
{
++pStr1,
++pStr2,
--nCount;
}
return nRet;
}
static sal_Int32 ImplStringCompareWithoutZeroAscii( const sal_Unicode* pStr1, const sal_Char* pStr2,
xub_StrLen nCount )
{
sal_Int32 nRet = 0;
while ( nCount &&
((nRet = ((sal_Int32)*pStr1)-((sal_Int32)((unsigned char)*pStr2))) == 0) )
{
++pStr1,
++pStr2,
--nCount;
}
return nRet;
}
UniString& UniString::AppendAscii( const sal_Char* pAsciiStr )
{
DBG_CHKTHIS( UniString, DbgCheckUniString );
DBG_ASSERT( pAsciiStr, "UniString::AppendAscii() - pAsciiStr is NULL" );
// determine string length
sal_Int32 nCopyLen = ImplStringLen( pAsciiStr );
// detect overflow
nCopyLen = ImplGetCopyLen( mpData->mnLen, nCopyLen );
// If appended string is not empty
if ( nCopyLen )
{
// Allocate new string
UniStringData* pNewData = ImplAllocData( mpData->mnLen+nCopyLen );
// copy string data
memcpy( pNewData->maStr, mpData->maStr, mpData->mnLen*sizeof( sal_Unicode ) );
ImplCopyAsciiStr( pNewData->maStr+mpData->mnLen, pAsciiStr, nCopyLen );
// release old string
STRING_RELEASE((STRING_TYPE *)mpData);
mpData = pNewData;
}
return *this;
}
UniString& UniString::AppendAscii( const sal_Char* pAsciiStr, xub_StrLen nLen )
{
DBG_CHKTHIS( UniString, DbgCheckUniString );
DBG_ASSERT( pAsciiStr, "UniString::AppendAscii() - pAsciiStr is NULL" );
if ( nLen == STRING_LEN )
nLen = ImplStringLen( pAsciiStr );
#ifdef DBG_UTIL
if ( DbgIsAssert() )
{
for ( xub_StrLen i = 0; i < nLen; ++i )
{
if ( !pAsciiStr[i] )
{
OSL_FAIL( "UniString::AppendAscii() : nLen is wrong" );
}
}
}
#endif
// detect overflow
sal_Int32 nCopyLen = ImplGetCopyLen( mpData->mnLen, nLen );
// If appended string is not empty
if ( nCopyLen )
{
// Allocate new string
UniStringData* pNewData = ImplAllocData( mpData->mnLen+nCopyLen );
// copy string data
memcpy( pNewData->maStr, mpData->maStr, mpData->mnLen*sizeof( sal_Unicode ) );
ImplCopyAsciiStr( pNewData->maStr+mpData->mnLen, pAsciiStr, nCopyLen );
// release old string
STRING_RELEASE((STRING_TYPE *)mpData);
mpData = pNewData;
}
return *this;
}
StringCompare UniString::CompareToAscii( const sal_Char* pAsciiStr,
xub_StrLen nLen ) const
{
DBG_CHKTHIS( UniString, DbgCheckUniString );
DBG_ASSERT( ImplDbgCheckAsciiStr( pAsciiStr, nLen ),
"UniString::CompareToAscii() - pAsciiStr include characters > 127" );
// String vergleichen
sal_Int32 nCompare = ImplStringCompareAscii( mpData->maStr, pAsciiStr, nLen );
// Rueckgabewert anpassen
if ( nCompare == 0 )
return COMPARE_EQUAL;
else if ( nCompare < 0 )
return COMPARE_LESS;
else
return COMPARE_GREATER;
}
xub_StrLen UniString::SearchAscii( const sal_Char* pAsciiStr, xub_StrLen nIndex ) const
{
DBG_CHKTHIS( UniString, DbgCheckUniString );
DBG_ASSERT( ImplDbgCheckAsciiStr( pAsciiStr, STRING_LEN ),
"UniString::SearchAscii() - pAsciiStr include characters > 127" );
sal_Int32 nLen = mpData->mnLen;
xub_StrLen nStrLen = ImplStringLen( pAsciiStr );
// If length of pAsciiStr is 0 or index exceeds length, it was not found
if ( !nStrLen || (nIndex >= nLen) )
return STRING_NOTFOUND;
const sal_Unicode* pStr = mpData->maStr;
pStr += nIndex;
if ( nStrLen == 1 )
{
sal_Unicode cSearch = (unsigned char)*pAsciiStr;
while ( nIndex < nLen )
{
if ( *pStr == cSearch )
return nIndex;
++pStr,
++nIndex;
}
}
else
{
// Only search within string
while ( nLen - nIndex >= nStrLen )
{
// Check if string matches
if ( ImplStringCompareWithoutZeroAscii( pStr, pAsciiStr, nStrLen ) == 0 )
return nIndex;
++pStr,
++nIndex;
}
}
return STRING_NOTFOUND;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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