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| 1 // Copyright 2016 PDFium Authors. All rights reserved. | 1 // Copyright 2016 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 "core/fpdfapi/fpdf_parser/cpdf_hint_tables.h" | 7 #include "core/fpdfapi/fpdf_parser/cpdf_hint_tables.h" |
| 8 | 8 |
| 9 #include "core/fpdfapi/fpdf_parser/cpdf_data_avail.h" | 9 #include "core/fpdfapi/fpdf_parser/cpdf_data_avail.h" |
| 10 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" | 10 #include "core/fpdfapi/fpdf_parser/include/cpdf_array.h" |
| 11 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" | 11 #include "core/fpdfapi/fpdf_parser/include/cpdf_dictionary.h" |
| 12 #include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h" | 12 #include "core/fpdfapi/fpdf_parser/include/cpdf_stream.h" |
| 13 #include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h" | 13 #include "core/fpdfapi/fpdf_parser/include/cpdf_stream_acc.h" |
| 14 #include "core/fxcrt/include/fx_safe_types.h" | 14 #include "core/fxcrt/include/fx_safe_types.h" |
| 15 | 15 |
| 16 namespace { | 16 namespace { |
| 17 | 17 |
| 18 bool CanReadFromBitStream(const CFX_BitStream* hStream, | 18 bool CanReadFromBitStream(const CFX_BitStream* hStream, |
| 19 const FX_SAFE_UINT32& num_bits) { | 19 const FX_SAFE_UINT32& num_bits) { |
| 20 return num_bits.IsValid() && | 20 return num_bits.IsValid() && |
| 21 hStream->BitsRemaining() >= num_bits.ValueOrDie(); | 21 hStream->BitsRemaining() >= num_bits.ValueOrDie(); |
| 22 } | 22 } |
| 23 | 23 |
| 24 } // namespace | 24 } // namespace |
| 25 | 25 |
| 26 CPDF_HintTables::CPDF_HintTables(CPDF_DataAvail* pDataAvail, |
| 27 CPDF_Dictionary* pLinearized) |
| 28 : m_pDataAvail(pDataAvail), |
| 29 m_pLinearizedDict(pLinearized), |
| 30 m_nFirstPageSharedObjs(0), |
| 31 m_szFirstPageObjOffset(0) {} |
| 32 |
| 26 CPDF_HintTables::~CPDF_HintTables() { | 33 CPDF_HintTables::~CPDF_HintTables() { |
| 27 m_dwDeltaNObjsArray.RemoveAll(); | 34 m_dwDeltaNObjsArray.RemoveAll(); |
| 28 m_dwNSharedObjsArray.RemoveAll(); | 35 m_dwNSharedObjsArray.RemoveAll(); |
| 29 m_dwSharedObjNumArray.RemoveAll(); | 36 m_dwSharedObjNumArray.RemoveAll(); |
| 30 m_dwIdentifierArray.RemoveAll(); | 37 m_dwIdentifierArray.RemoveAll(); |
| 31 } | 38 } |
| 32 | 39 |
| 33 uint32_t CPDF_HintTables::GetItemLength( | 40 uint32_t CPDF_HintTables::GetItemLength( |
| 34 int index, | 41 int index, |
| 35 const std::vector<FX_FILESIZE>& szArray) { | 42 const std::vector<FX_FILESIZE>& szArray) { |
| (...skipping 427 matching lines...) Expand 10 before | Expand all | Expand 10 after Loading... |
| 463 CPDF_Array* pRange = m_pLinearizedDict->GetArrayBy("H"); | 470 CPDF_Array* pRange = m_pLinearizedDict->GetArrayBy("H"); |
| 464 if (!pRange) | 471 if (!pRange) |
| 465 return -1; | 472 return -1; |
| 466 | 473 |
| 467 CPDF_Object* pStreamLen = pRange->GetDirectObjectAt(1); | 474 CPDF_Object* pStreamLen = pRange->GetDirectObjectAt(1); |
| 468 if (!pStreamLen) | 475 if (!pStreamLen) |
| 469 return -1; | 476 return -1; |
| 470 | 477 |
| 471 return pStreamLen->GetInteger(); | 478 return pStreamLen->GetInteger(); |
| 472 } | 479 } |
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