svl/source/misc/sharedstring.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
  10 #include <svl/sharedstring.hxx>
  11
  12 namespace svl {
  13
  14 SharedString SharedString::getEmptyString()
  15 {
  16     // unicode string array for empty string is globally shared in OUString.
  17     // Let's take advantage of that.
  18     rtl_uString* pData = nullptr;
  19     rtl_uString_new(&pData);
  20     return SharedString(pData, pData);
  21 }
  22
  23 SharedString::SharedString() : mpData(nullptr), mpDataIgnoreCase(nullptr) {}
  24
  25 SharedString::SharedString( rtl_uString* pData, rtl_uString* pDataIgnoreCase ) :
  26     mpData(pData), mpDataIgnoreCase(pDataIgnoreCase)
  27 {
  28     if (mpData)
  29         rtl_uString_acquire(mpData);
  30     if (mpDataIgnoreCase)
  31         rtl_uString_acquire(mpDataIgnoreCase);
  32 }
  33
  34 SharedString::SharedString( const OUString& rStr ) : mpData(rStr.pData), mpDataIgnoreCase(nullptr)
  35 {
  36     rtl_uString_acquire(mpData);
  37 }
  38
  39 SharedString::SharedString( const SharedString& r ) : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
  40 {
  41     if (mpData)
  42         rtl_uString_acquire(mpData);
  43     if (mpDataIgnoreCase)
  44         rtl_uString_acquire(mpDataIgnoreCase);
  45 }
  46
  47 SharedString::SharedString( SharedString&& r ) : mpData(r.mpData), mpDataIgnoreCase(r.mpDataIgnoreCase)
  48 {
  49     r.mpData = nullptr;
  50     r.mpDataIgnoreCase = nullptr;
  51 }
  52
  53 SharedString::~SharedString()
  54 {
  55     if (mpData)
  56         rtl_uString_release(mpData);
  57     if (mpDataIgnoreCase)
  58         rtl_uString_release(mpDataIgnoreCase);
  59 }
  60
  61 SharedString& SharedString::operator= ( const SharedString& r )
  62 {
  63     if (mpData)
  64         rtl_uString_release(mpData);
  65     if (mpDataIgnoreCase)
  66         rtl_uString_release(mpDataIgnoreCase);
  67
  68     mpData = r.mpData;
  69     mpDataIgnoreCase = r.mpDataIgnoreCase;
  70
  71     if (mpData)
  72         rtl_uString_acquire(mpData);
  73     if (mpDataIgnoreCase)
  74         rtl_uString_acquire(mpDataIgnoreCase);
  75
  76     return *this;
  77 }
  78
  79 SharedString& SharedString::operator= ( SharedString&& r )
  80 {
  81     if (mpData)
  82         rtl_uString_release(mpData);
  83     if (mpDataIgnoreCase)
  84         rtl_uString_release(mpDataIgnoreCase);
  85
  86     mpData = r.mpData;
  87     mpDataIgnoreCase = r.mpDataIgnoreCase;
  88
  89     r.mpData = nullptr;
  90     r.mpDataIgnoreCase = nullptr;
  91
  92     return *this;
  93 }
  94
  95 bool SharedString::operator== ( const SharedString& r ) const
  96 {
  97     // Compare only the original (not case-folded) string.
  98
  99     if (mpData == r.mpData)
 100         return true;
 101
 102     if (mpData)
 103     {
 104         if (!r.mpData)
 105             return false;
 106
 107         if (mpData->length != r.mpData->length)
 108             return false;
 109
 110         return rtl_ustr_reverseCompare_WithLength(mpData->buffer, mpData->length, r.mpData->buffer, r.mpData->length) == 0;
 111     }
 112
 113     return !r.mpData;
 114 }
 115
 116 bool SharedString::operator!= ( const SharedString& r ) const
 117 {
 118     return !operator== (r);
 119 }
 120
 121 OUString SharedString::getString() const
 122 {
 123     return mpData ? OUString(mpData) : OUString();
 124 }
 125
 126 rtl_uString* SharedString::getData()
 127 {
 128     return mpData;
 129 }
 130
 131 const rtl_uString* SharedString::getData() const
 132 {
 133     return mpData;
 134 }
 135
 136 rtl_uString* SharedString::getDataIgnoreCase()
 137 {
 138     return mpDataIgnoreCase;
 139 }
 140
 141 const rtl_uString* SharedString::getDataIgnoreCase() const
 142 {
 143     return mpDataIgnoreCase;
 144 }
 145
 146 bool SharedString::isValid() const
 147 {
 148     return mpData != nullptr;
 149 }
 150
 151 bool SharedString::isEmpty() const
 152 {
 153     return mpData == nullptr || mpData->length == 0;
 154 }
 155
 156 sal_Int32 SharedString::getLength() const
 157 {
 158     return mpData ? mpData->length : 0;
 159 }
 160
 161 }
 162
 163 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */