sc/source/filter/starcalc/collect.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 "collect.hxx"
  21
  22 #include <string.h>
  23
  24 #define MAXCOLLECTIONSIZE       16384
  25 #define MAXDELTA                1024
  26
  27 ScDataObject::~ScDataObject()
  28 {
  29 }
  30
  31 // Collection
  32
  33 static void lcl_DeleteScDataObjects( ScDataObject** p, sal_uInt16 nCount )
  34 {
  35     if ( p )
  36     {
  37         for (sal_uInt16 i = 0; i < nCount; i++) delete p[i];
  38         delete[] p;
  39     }
  40 }
  41
  42 ScCollection::ScCollection(sal_uInt16 nLim, sal_uInt16 nDel) :
  43     nCount ( 0 ),
  44     nLimit ( nLim ),
  45     nDelta ( nDel ),
  46     pItems ( NULL )
  47 {
  48     if (nDelta > MAXDELTA)
  49         nDelta = MAXDELTA;
  50     else if (nDelta == 0)
  51         nDelta = 1;
  52     if (nLimit > MAXCOLLECTIONSIZE)
  53         nLimit = MAXCOLLECTIONSIZE;
  54     else if (nLimit < nDelta)
  55         nLimit = nDelta;
  56     pItems = new ScDataObject*[nLimit];
  57 }
  58
  59 ScCollection::ScCollection(const ScCollection& rCollection)
  60     :   ScDataObject(),
  61         nCount ( 0 ),
  62         nLimit ( 0 ),
  63         nDelta ( 0 ),
  64         pItems ( NULL )
  65 {
  66     *this = rCollection;
  67 }
  68
  69 ScCollection::~ScCollection()
  70 {
  71     lcl_DeleteScDataObjects( pItems, nCount );
  72 }
  73
  74 bool ScCollection::AtInsert(sal_uInt16 nIndex, ScDataObject* pScDataObject)
  75 {
  76     if ((nCount < MAXCOLLECTIONSIZE) && (nIndex <= nCount) && pItems)
  77     {
  78         if (nCount == nLimit)
  79         {
  80             ScDataObject** pNewItems = new ScDataObject*[nLimit + nDelta];
  81             if (!pNewItems)
  82                 return false;
  83             nLimit = sal::static_int_cast<sal_uInt16>( nLimit + nDelta );
  84             memcpy(pNewItems, pItems, nCount * sizeof(ScDataObject*));
  85             delete[] pItems;
  86             pItems = pNewItems;
  87         }
  88         if (nCount > nIndex)
  89             memmove(&pItems[nIndex + 1], &pItems[nIndex], (nCount - nIndex) * sizeof(ScDataObject*));
  90         pItems[nIndex] = pScDataObject;
  91         nCount++;
  92         return true;
  93     }
  94     return false;
  95 }
  96
  97 bool ScCollection::Insert(ScDataObject* pScDataObject)
  98 {
  99     return AtInsert(nCount, pScDataObject);
 100 }
 101
 102 ScDataObject* ScCollection::At(sal_uInt16 nIndex) const
 103 {
 104     if (nIndex < nCount)
 105         return pItems[nIndex];
 106     else
 107         return NULL;
 108 }
 109
 110 ScCollection& ScCollection::operator=( const ScCollection& r )
 111 {
 112     // Check for self-assignment
 113     if (this == &r)
 114        return *this;
 115
 116     lcl_DeleteScDataObjects( pItems, nCount );
 117
 118     nCount = r.nCount;
 119     nLimit = r.nLimit;
 120     nDelta = r.nDelta;
 121     pItems = new ScDataObject*[nLimit];
 122     for ( sal_uInt16 i=0; i<nCount; i++ )
 123         pItems[i] = r.pItems[i]->Clone();
 124
 125     return *this;
 126 }
 127
 128 ScDataObject*   ScCollection::Clone() const
 129 {
 130     return new ScCollection(*this);
 131 }
 132
 133 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */