fpicker/source/win32/WinImplHelper.cxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
   2 /*
   3  * This file is part of the LibreOffice project.
   4  *
   5  * This Source Code Form is subject to the terms of the Mozilla Public
   6  * License, v. 2.0. If a copy of the MPL was not distributed with this
   7  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   8  *
   9  * This file incorporates work covered by the following license notice:
  10  *
  11  *   Licensed to the Apache Software Foundation (ASF) under one or more
  12  *   contributor license agreements. See the NOTICE file distributed
  13  *   with this work for additional information regarding copyright
  14  *   ownership. The ASF licenses this file to you under the Apache
  15  *   License, Version 2.0 (the "License"); you may not use this file
  16  *   except in compliance with the License. You may obtain a copy of
  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #include "WinImplHelper.hxx"
  21
  22 #include <vector>
  23 #include <osl/diagnose.h>
  24 #include <rtl/ustrbuf.hxx>
  25 #include <com/sun/star/uno/Sequence.hxx>
  26
  27 const sal_Unicode   TILDE_SIGN = L'~';
  28 const sal_Unicode   AMPERSAND_SIGN = L'&';
  29
  30 // OS NAME          Platform                    Major   Minor
  31
  32 // Windows NT 3.51  VER_PLATFORM_WIN32_NT       3       51
  33 // Windows NT 4.0   VER_PLATFORM_WIN32_NT       4       0
  34 // Windows 2000     VER_PLATFORM_WIN32_NT       5       0
  35 // Windows XP       VER_PLATFORM_WIN32_NT       5       1
  36 // Windows Vista    VER_PLATFORM_WIN32_NT       6       0
  37 // Windows 7        VER_PLATFORM_WIN32_NT       6       1
  38 // Windows 95       VER_PLATFORM_WIN32_WINDOWS  4       0
  39 // Windows 98       VER_PLATFORM_WIN32_WINDOWS  4       10
  40 // Windows ME       VER_PLATFORM_WIN32_WINDOWS  4       90
  41
  42
  43 static void Replace( const OUString& aLabel, sal_Unicode OldChar, sal_Unicode NewChar, OUStringBuffer& aBuffer )
  44 {
  45     OSL_ASSERT( aLabel.getLength( ) );
  46     OSL_ASSERT( aBuffer.getCapacity( ) >= (aLabel.getLength( )) );
  47
  48     sal_Int32 i = 0;
  49     const sal_Unicode* pCurrent  = aLabel.getStr( );
  50     const sal_Unicode* pNext     = aLabel.getStr( ) + 1;
  51     const sal_Unicode* pEnd      = aLabel.getStr( ) + aLabel.getLength( );
  52
  53     while( pCurrent < pEnd )
  54     {
  55         OSL_ASSERT( pNext <= pEnd );
  56         OSL_ASSERT( (i >= 0) && (i < aBuffer.getCapacity( )) );
  57
  58         if ( OldChar == *pCurrent )
  59         {
  60             if ( OldChar == *pNext )
  61             {
  62                 // two OldChars in line will
  63                 // be replaced by one
  64                 // e.g. ~~ -> ~
  65                 aBuffer.insert( i, *pCurrent );
  66
  67                 // skip the next one
  68                 pCurrent++;
  69                 pNext++;
  70             }
  71             else
  72             {
  73                 // one OldChar will be replace
  74                 // by NexChar
  75                 aBuffer.insert( i, NewChar );
  76             }
  77         }
  78         else if ( *pCurrent == NewChar )
  79         {
  80             // a NewChar will be replaced by
  81              // two NewChars
  82              // e.g. & -> &&
  83             aBuffer.insert( i++, *pCurrent );
  84             aBuffer.insert( i, *pCurrent );
  85         }
  86         else
  87         {
  88             aBuffer.insert( i, *pCurrent );
  89         }
  90
  91         pCurrent++;
  92         pNext++;
  93         i++;
  94     }
  95 }
  96
  97 // converts a soffice label to a windows label
  98 // the following rules for character replacements
  99 // will be done:
 100 // '~'  -> '&'
 101 // '~~' -> '~'
 102 // '&'  -> '&&'
 103
 104 OUString SOfficeToWindowsLabel( const OUString& aSOLabel )
 105 {
 106     OUString aWinLabel = aSOLabel;
 107
 108     if ( (aWinLabel.indexOf( TILDE_SIGN ) > -1) || (aWinLabel.indexOf( AMPERSAND_SIGN ) > -1) )
 109     {
 110         sal_Int32 nStrLen = aWinLabel.getLength( );
 111
 112         // in the worst case the new string is
 113         // doubled in length, maybe some waste
 114         // of memory but how long is a label
 115         // normally(?)
 116         OUStringBuffer aBuffer( nStrLen * 2 );
 117
 118         Replace( aWinLabel, TILDE_SIGN, AMPERSAND_SIGN, aBuffer );
 119
 120         aWinLabel = aBuffer.makeStringAndClear( );
 121     }
 122
 123     return aWinLabel;
 124 }
 125
 126 // converts a windows label to a soffice label
 127 // the following rules for character replacements
 128 // will be done:
 129 // '&'  -> '~'
 130 // '&&' -> '&'
 131 // '~'  -> '~~'
 132
 133 OUString WindowsToSOfficeLabel( const OUString& aWinLabel )
 134 {
 135     OUString aSOLabel = aWinLabel;
 136
 137     if ( (aSOLabel.indexOf( TILDE_SIGN ) > -1) || (aSOLabel.indexOf( AMPERSAND_SIGN ) > -1) )
 138     {
 139         sal_Int32 nStrLen = aSOLabel.getLength( );
 140
 141         // in the worst case the new string is
 142         // doubled in length, maybe some waste
 143         // of memory but how long is a label
 144         // normally(?)
 145         OUStringBuffer aBuffer( nStrLen * 2 );
 146
 147         Replace( aSOLabel, AMPERSAND_SIGN, TILDE_SIGN, aBuffer );
 148
 149         aSOLabel = aBuffer.makeStringAndClear( );
 150     }
 151
 152     return aSOLabel;
 153 }
 154
 155 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */