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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 :
21 : #include <sfx2/minarray.hxx>
22 :
23 : // -----------------------------------------------------------------------
24 :
25 2270 : SfxPtrArr::SfxPtrArr( sal_uInt8 nInitSize, sal_uInt8 nGrowSize ):
26 : nUsed( 0 ),
27 : nGrow( nGrowSize ? nGrowSize : 1 ),
28 2270 : nUnused( nInitSize )
29 : {
30 2270 : sal_uInt16 nMSCBug = nInitSize;
31 :
32 2270 : if ( nMSCBug > 0 )
33 2242 : pData = new void*[nMSCBug];
34 : else
35 28 : pData = 0;
36 2270 : }
37 :
38 : // -----------------------------------------------------------------------
39 :
40 0 : SfxPtrArr::SfxPtrArr( const SfxPtrArr& rOrig )
41 : {
42 0 : nUsed = rOrig.nUsed;
43 0 : nGrow = rOrig.nGrow;
44 0 : nUnused = rOrig.nUnused;
45 :
46 0 : if ( rOrig.pData != 0 )
47 : {
48 0 : pData = new void*[nUsed+nUnused];
49 0 : memcpy( pData, rOrig.pData, nUsed*sizeof(void*) );
50 : }
51 : else
52 0 : pData = 0;
53 0 : }
54 :
55 : // -----------------------------------------------------------------------
56 :
57 301 : SfxPtrArr::~SfxPtrArr()
58 : {
59 301 : delete [] pData;
60 301 : }
61 :
62 : // -----------------------------------------------------------------------
63 :
64 0 : SfxPtrArr& SfxPtrArr::operator=( const SfxPtrArr& rOrig )
65 : {
66 :
67 0 : delete [] pData;
68 :
69 0 : nUsed = rOrig.nUsed;
70 0 : nGrow = rOrig.nGrow;
71 0 : nUnused = rOrig.nUnused;
72 :
73 0 : if ( rOrig.pData != 0 )
74 : {
75 0 : pData = new void*[nUsed+nUnused];
76 0 : memcpy( pData, rOrig.pData, nUsed*sizeof(void*) );
77 : }
78 : else
79 0 : pData = 0;
80 0 : return *this;
81 : }
82 :
83 : // -----------------------------------------------------------------------
84 :
85 3368 : void SfxPtrArr::Append( void* aElem )
86 : {
87 : DBG_ASSERT( sal::static_int_cast< unsigned >(nUsed+1) < ( USHRT_MAX / sizeof(void*) ), "array too large" );
88 : // Does the Array need to be copied?
89 3368 : if ( nUnused == 0 )
90 : {
91 379 : sal_uInt16 nNewSize = (nUsed == 1) ? (nGrow==1 ? 2 : nGrow) : nUsed+nGrow;
92 379 : void** pNewData = new void*[nNewSize];
93 379 : if ( pData )
94 : {
95 : DBG_ASSERT( nUsed <= nNewSize, "" );
96 379 : memcpy( pNewData, pData, sizeof(void*)*nUsed );
97 379 : delete [] pData;
98 : }
99 379 : nUnused = sal::static_int_cast< sal_uInt8 >(nNewSize-nUsed);
100 379 : pData = pNewData;
101 : }
102 :
103 : // now write at the back in the open space
104 3368 : pData[nUsed] = aElem;
105 3368 : ++nUsed;
106 3368 : --nUnused;
107 3368 : }
108 :
109 : // -----------------------------------------------------------------------
110 :
111 8110 : sal_uInt16 SfxPtrArr::Remove( sal_uInt16 nPos, sal_uInt16 nLen )
112 : {
113 : // Adjust nLen, thus to avoid deleting beyond the end
114 8110 : nLen = Min( (sal_uInt16)(nUsed-nPos), nLen );
115 :
116 : // simple problems require simple solutions!
117 8110 : if ( nLen == 0 )
118 0 : return 0;
119 :
120 : // Maybe no one will remain
121 8110 : if ( (nUsed-nLen) == 0 )
122 : {
123 498 : delete [] pData;
124 498 : pData = 0;
125 498 : nUsed = 0;
126 498 : nUnused = 0;
127 498 : return nLen;
128 : }
129 :
130 : // Determine whether the array has physically shrunk...
131 7612 : if ( (nUnused+nLen) >= nGrow )
132 : {
133 : // reduce (rounded up) to the next Grow-border
134 1306 : sal_uInt16 nNewUsed = nUsed-nLen;
135 1306 : sal_uInt16 nNewSize = ((nNewUsed+nGrow-1)/nGrow) * nGrow;
136 : DBG_ASSERT( nNewUsed <= nNewSize && nNewUsed+nGrow > nNewSize,
137 : "shrink size computation failed" );
138 1306 : void** pNewData = new void*[nNewSize];
139 1306 : if ( nPos > 0 )
140 : {
141 : DBG_ASSERT( nPos <= nNewSize, "" );
142 300 : memcpy( pNewData, pData, sizeof(void*)*nPos );
143 : }
144 1306 : if ( nNewUsed != nPos )
145 2012 : memcpy( pNewData+nPos, pData+nPos+nLen,
146 3018 : sizeof(void*)*(nNewUsed-nPos) );
147 1306 : delete [] pData;
148 1306 : pData = pNewData;
149 1306 : nUsed = nNewUsed;
150 1306 : nUnused = sal::static_int_cast< sal_uInt8 >(nNewSize - nNewUsed);
151 1306 : return nLen;
152 : }
153 :
154 : // in all other cases, only push together
155 6306 : if ( nUsed-nPos-nLen > 0 )
156 1416 : memmove( pData+nPos, pData+nPos+nLen, (nUsed-nPos-nLen)*sizeof(void*) );
157 6306 : nUsed = nUsed - nLen;
158 6306 : nUnused = sal::static_int_cast< sal_uInt8 >(nUnused + nLen);
159 6306 : return nLen;
160 : }
161 :
162 : // -----------------------------------------------------------------------
163 :
164 0 : sal_Bool SfxPtrArr::Remove( void* aElem )
165 : {
166 : // simple tasks ...
167 0 : if ( nUsed == 0 )
168 0 : return sal_False;
169 :
170 : // backwards, since most of the last is first removed
171 0 : void* *pIter = pData + nUsed - 1;
172 0 : for ( sal_uInt16 n = 0; n < nUsed; ++n, --pIter )
173 0 : if ( *pIter == aElem )
174 : {
175 0 : Remove(nUsed-n-1, 1);
176 0 : return sal_True;
177 : }
178 0 : return sal_False;
179 : }
180 :
181 : // -----------------------------------------------------------------------
182 :
183 0 : sal_Bool SfxPtrArr::Contains( const void* rItem ) const
184 : {
185 0 : if ( !nUsed )
186 0 : return sal_False;
187 :
188 0 : for ( sal_uInt16 n = 0; n < nUsed; ++n )
189 : {
190 0 : void* p = GetObject(n);
191 0 : if ( p == rItem )
192 0 : return sal_True;
193 : }
194 :
195 0 : return sal_False;
196 : }
197 :
198 : // -----------------------------------------------------------------------
199 :
200 18305 : void SfxPtrArr::Insert( sal_uInt16 nPos, void* rElem )
201 : {
202 : DBG_ASSERT( sal::static_int_cast< unsigned >(nUsed+1) < ( USHRT_MAX / sizeof(void*) ), "array too large" );
203 : // Does the Array have to be copied?
204 18305 : if ( nUnused == 0 )
205 : {
206 : // increase (rounded up ) to the next Grow-border
207 5453 : sal_uInt16 nNewSize = nUsed+nGrow;
208 5453 : void** pNewData = new void*[nNewSize];
209 :
210 5453 : if ( pData )
211 : {
212 : DBG_ASSERT( nUsed < nNewSize, "" );
213 5217 : memcpy( pNewData, pData, sizeof(void*)*nUsed );
214 5217 : delete [] pData;
215 : }
216 5453 : nUnused = sal::static_int_cast< sal_uInt8 >(nNewSize-nUsed);
217 5453 : pData = pNewData;
218 : }
219 :
220 : // Now move the rear part
221 18305 : if ( nPos < nUsed )
222 8072 : memmove( pData+nPos+1, pData+nPos, (nUsed-nPos)*sizeof(void*) );
223 :
224 : // Now write into the free space.
225 18305 : memmove( pData+nPos, &rElem, sizeof(void*) );
226 18305 : nUsed += 1;
227 18305 : nUnused -= 1;
228 18305 : }
229 :
230 : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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