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-rw-r--r--vcl/win/dtrans/TxtCnvtHlp.cxx125
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: */