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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #include "xfa/fde/cfde_txtedtbuf.h" | 7 #include "xfa/fde/cfde_txtedtbuf.h" |
8 | 8 |
9 #include "xfa/fgas/crt/fgas_memory.h" | 9 #include "xfa/fgas/crt/fgas_memory.h" |
10 | 10 |
11 namespace { | 11 namespace { |
12 | 12 |
13 const int kDefaultChunkSize = 1024; | 13 const int kDefaultChunkSize = 1024; |
14 const int kDefaultChunkCount = 2; | 14 const int kDefaultChunkCount = 2; |
15 | 15 |
16 } // namespace | 16 } // namespace |
17 | 17 |
18 CFDE_TxtEdtBuf::CFDE_TxtEdtBuf() | 18 CFDE_TxtEdtBuf::CFDE_TxtEdtBuf() |
19 : m_nChunkSize(kDefaultChunkSize), | 19 : m_nChunkSize(kDefaultChunkSize), m_nTotal(0), m_bChanged(FALSE) { |
20 m_nTotal(0), | |
21 m_bChanged(FALSE), | |
22 m_pAllocator(nullptr) { | |
23 ASSERT(m_nChunkSize); | |
24 ResetChunkBuffer(kDefaultChunkCount, m_nChunkSize); | 20 ResetChunkBuffer(kDefaultChunkCount, m_nChunkSize); |
25 } | 21 } |
26 | 22 |
27 CFDE_TxtEdtBuf::~CFDE_TxtEdtBuf() { | 23 CFDE_TxtEdtBuf::~CFDE_TxtEdtBuf() { |
28 Clear(TRUE); | 24 Clear(TRUE); |
29 delete m_pAllocator; | |
30 m_Chunks.RemoveAll(); | 25 m_Chunks.RemoveAll(); |
31 } | 26 } |
32 | 27 |
33 int32_t CFDE_TxtEdtBuf::GetChunkSize() const { | 28 int32_t CFDE_TxtEdtBuf::GetChunkSize() const { |
34 return m_nChunkSize; | 29 return m_nChunkSize; |
35 } | 30 } |
36 | 31 |
37 int32_t CFDE_TxtEdtBuf::GetTextLength() const { | 32 int32_t CFDE_TxtEdtBuf::GetTextLength() const { |
38 return m_nTotal; | 33 return m_nTotal; |
39 } | 34 } |
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264 return FALSE; | 259 return FALSE; |
265 } | 260 } |
266 m_bChanged = FALSE; | 261 m_bChanged = FALSE; |
267 return TRUE; | 262 return TRUE; |
268 } | 263 } |
269 | 264 |
270 void CFDE_TxtEdtBuf::ResetChunkBuffer(int32_t nDefChunkCount, | 265 void CFDE_TxtEdtBuf::ResetChunkBuffer(int32_t nDefChunkCount, |
271 int32_t nChunkSize) { | 266 int32_t nChunkSize) { |
272 ASSERT(nChunkSize); | 267 ASSERT(nChunkSize); |
273 ASSERT(nDefChunkCount); | 268 ASSERT(nDefChunkCount); |
274 delete m_pAllocator; | |
275 m_pAllocator = nullptr; | |
276 m_Chunks.RemoveAll(); | 269 m_Chunks.RemoveAll(); |
277 m_nChunkSize = nChunkSize; | 270 m_nChunkSize = nChunkSize; |
278 int32_t nChunkLength = | 271 int32_t nChunkLength = |
279 sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR); | 272 sizeof(FDE_CHUNKHEADER) + (m_nChunkSize - 1) * sizeof(FX_WCHAR); |
280 m_pAllocator = IFX_MemoryAllocator::Create(FX_ALLOCTYPE_Fixed, nDefChunkCount, | 273 m_pAllocator = IFX_MemoryAllocator::Create(FX_ALLOCTYPE_Fixed, nDefChunkCount, |
281 nChunkLength); | 274 nChunkLength); |
282 FDE_CHUNKHEADER* lpChunkHeader = | 275 FDE_CHUNKHEADER* lpChunkHeader = |
283 static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc(nChunkLength)); | 276 static_cast<FDE_CHUNKHEADER*>(m_pAllocator->Alloc(nChunkLength)); |
284 ASSERT(lpChunkHeader); | 277 ASSERT(lpChunkHeader); |
285 lpChunkHeader->nUsed = 0; | 278 lpChunkHeader->nUsed = 0; |
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308 int32_t nCount = m_Chunks.GetSize(); | 301 int32_t nCount = m_Chunks.GetSize(); |
309 for (; i < nCount; i++) { | 302 for (; i < nCount; i++) { |
310 nTotal += m_Chunks[i]->nUsed; | 303 nTotal += m_Chunks[i]->nUsed; |
311 if (nTotal > nIndex) { | 304 if (nTotal > nIndex) { |
312 break; | 305 break; |
313 } | 306 } |
314 } | 307 } |
315 cp.nChunkIndex = i; | 308 cp.nChunkIndex = i; |
316 cp.nCharIndex = m_Chunks[i]->nUsed - (nTotal - nIndex); | 309 cp.nCharIndex = m_Chunks[i]->nUsed - (nTotal - nIndex); |
317 } | 310 } |
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