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Diffstat (limited to '')
| -rw-r--r-- | vcl/win/dtrans/TxtCnvtHlp.cxx | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/vcl/win/dtrans/TxtCnvtHlp.cxx b/vcl/win/dtrans/TxtCnvtHlp.cxx new file mode 100644 index 000000000..d7ab386fc --- /dev/null +++ b/vcl/win/dtrans/TxtCnvtHlp.cxx @@ -0,0 +1,125 @@ +/* -*- 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 . + */ + +#include <osl/diagnose.h> + +#include "TxtCnvtHlp.hxx" +#include "DTransHelper.hxx" +#include "ImplHelper.hxx" + +using namespace ::com::sun::star::datatransfer; +using namespace ::com::sun::star::uno; + +// assuming a '\0' terminated string if no length specified + +static int CalcBuffSizeForTextConversion( UINT code_page, LPCSTR lpMultiByteString, int nLen = -1 ) +{ + return ( MultiByteToWideChar( code_page, + 0, + lpMultiByteString, + nLen, + nullptr, + 0 ) * sizeof( sal_Unicode ) ); +} + +// assuming a '\0' terminated string if no length specified + +static int CalcBuffSizeForTextConversion( UINT code_page, LPCWSTR lpWideCharString, int nLen = -1 ) +{ + return WideCharToMultiByte( code_page, + 0, + lpWideCharString, + nLen, + nullptr, + 0, + nullptr, + nullptr ); +} + +// converts text in one code page into unicode text +// automatically calculates the necessary buffer size and allocates +// the buffer + +int MultiByteToWideCharEx( UINT cp_src, + LPCSTR lpMultiByteString, + int lenStr, + CStgTransferHelper& refDTransHelper, + BOOL bEnsureTrailingZero ) +{ + OSL_ASSERT( IsValidCodePage( cp_src ) ); + OSL_ASSERT( nullptr != lpMultiByteString ); + + // calculate the required buff size + int reqSize = CalcBuffSizeForTextConversion( cp_src, lpMultiByteString, lenStr ); + + if ( bEnsureTrailingZero ) + reqSize += sizeof( sal_Unicode ); + + // initialize the data-transfer helper + refDTransHelper.init( reqSize ); + + // setup a global memory pointer + CRawHGlobalPtr ptrHGlob( refDTransHelper ); + + // do the conversion and return + return MultiByteToWideChar( cp_src, + 0, + lpMultiByteString, + lenStr, + static_cast< LPWSTR >( ptrHGlob.GetMemPtr( ) ), + ptrHGlob.MemSize( ) ); +} + +// converts unicode text into text of the specified code page +// automatically calculates the necessary buffer size and allocates +// the buffer + +int WideCharToMultiByteEx( UINT cp_dest, + LPCWSTR lpWideCharString, + int lenStr, + CStgTransferHelper& refDTransHelper, + BOOL bEnsureTrailingZero ) +{ + OSL_ASSERT( IsValidCodePage( cp_dest ) ); + OSL_ASSERT( nullptr != lpWideCharString ); + + // calculate the required buff size + int reqSize = CalcBuffSizeForTextConversion( cp_dest, lpWideCharString, lenStr ); + + if ( bEnsureTrailingZero ) + reqSize += sizeof( sal_Int8 ); + + // initialize the data-transfer helper + refDTransHelper.init( reqSize ); + + // setup a global memory pointer + CRawHGlobalPtr ptrHGlob( refDTransHelper ); + + // do the conversion and return + return WideCharToMultiByte( cp_dest, + 0, + lpWideCharString, + lenStr, + static_cast< LPSTR >( ptrHGlob.GetMemPtr( ) ), + ptrHGlob.MemSize( ), + nullptr, + nullptr ); +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |