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 = NULL;
  19     rtl_uString_new(&pData);
  20     return SharedString(pData, pData);
  21 }
  22
  23 SharedString::SharedString() : mpData(NULL), mpDataIgnoreCase(NULL) {}
  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(NULL)
  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()
  48 {
  49     if (mpData)
  50         rtl_uString_release(mpData);
  51     if (mpDataIgnoreCase)
  52         rtl_uString_release(mpDataIgnoreCase);
  53 }
  54
  55 SharedString& SharedString::operator= ( const SharedString& r )
  56 {
  57     if (mpData)
  58         rtl_uString_release(mpData);
  59     if (mpDataIgnoreCase)
  60         rtl_uString_release(mpDataIgnoreCase);
  61
  62     mpData = r.mpData;
  63     mpDataIgnoreCase = r.mpDataIgnoreCase;
  64
  65     if (mpData)
  66         rtl_uString_acquire(mpData);
  67     if (mpDataIgnoreCase)
  68         rtl_uString_acquire(mpDataIgnoreCase);
  69
  70     return *this;
  71 }
  72
  73 bool SharedString::operator== ( const SharedString& r ) const
  74 {
  75     // Only compare case sensitive strings.
  76     if (mpData == r.mpData)
  77         return true;
  78
  79     if (mpData)
  80     {
  81         if (!r.mpData)
  82             return false;
  83
  84         if (mpData->length != r.mpData->length)
  85             return false;
  86
  87         return rtl_ustr_reverseCompare_WithLength(mpData->buffer, mpData->length, r.mpData->buffer, r.mpData->length) == 0;
  88     }
  89
  90     return !r.mpData;
  91 }
  92
  93 bool SharedString::operator!= ( const SharedString& r ) const
  94 {
  95     return !operator== (r);
  96 }
  97
  98 OUString SharedString::getString() const
  99 {
 100     return mpData ? OUString(mpData) : OUString();
 101 }
 102
 103 rtl_uString* SharedString::getData()
 104 {
 105     return mpData;
 106 }
 107
 108 const rtl_uString* SharedString::getData() const
 109 {
 110     return mpData;
 111 }
 112
 113 rtl_uString* SharedString::getDataIgnoreCase()
 114 {
 115     return mpDataIgnoreCase;
 116 }
 117
 118 const rtl_uString* SharedString::getDataIgnoreCase() const
 119 {
 120     return mpDataIgnoreCase;
 121 }
 122
 123 bool SharedString::isValid() const
 124 {
 125     return mpData != NULL;
 126 }
 127
 128 bool SharedString::isEmpty() const
 129 {
 130     return mpData == NULL || mpData->length == 0;
 131 }
 132
 133 sal_Int32 SharedString::getLength() const
 134 {
 135     return mpData ? mpData->length : 0;
 136 }
 137
 138 }
 139
 140 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */