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| 1 // Copyright 2016 PDFium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| 6 |
| 7 #include "core/fpdfapi/parser/cpdf_linearized.h" |
| 8 |
| 9 #include "core/fpdfapi/parser/cpdf_array.h" |
| 10 #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| 11 |
| 12 // static |
| 13 std::unique_ptr<CPDF_Linearized> CPDF_Linearized::CreateForObject( |
| 14 std::unique_ptr<CPDF_Object, ReleaseDeleter<CPDF_Object>> pObj) { |
| 15 if (!pObj) |
| 16 return std::unique_ptr<CPDF_Linearized>(); |
| 17 CPDF_Dictionary* pDict = pObj->GetDict(); |
| 18 if (!pDict || !pDict->GetObjectFor("Linearized")) |
| 19 return std::unique_ptr<CPDF_Linearized>(); |
| 20 return std::unique_ptr<CPDF_Linearized>(new CPDF_Linearized(pDict)); |
| 21 } |
| 22 |
| 23 CPDF_Linearized::CPDF_Linearized(CPDF_Dictionary* pDict) { |
| 24 m_szFileSize = pDict->GetIntegerFor("L"); |
| 25 m_dwFirstPageNo = pDict->GetIntegerFor("P"); |
| 26 m_szLastXRefOffset = pDict->GetIntegerFor("T"); |
| 27 m_PageCount = pDict->GetIntegerFor("N"); |
| 28 m_szFirstPageEndOffset = pDict->GetIntegerFor("E"); |
| 29 m_FirstPageObjNum = pDict->GetIntegerFor("O"); |
| 30 CPDF_Array* pHintStreamRange = pDict->GetArrayFor("H"); |
| 31 size_t nHintStreamSize = pHintStreamRange ? pHintStreamRange->GetCount() : 0; |
| 32 if (nHintStreamSize == 2 || nHintStreamSize == 4) { |
| 33 m_szHintStart = pHintStreamRange->GetIntegerAt(0); |
| 34 m_szHintLength = pHintStreamRange->GetIntegerAt(1); |
| 35 } |
| 36 } |
| 37 |
| 38 CPDF_Linearized::~CPDF_Linearized() {} |
| 39 |
| 40 bool CPDF_Linearized::HasHintTable() const { |
| 41 return GetPageCount() > 1 && GetHintStart() > 0 && GetHintLength() > 0; |
| 42 } |
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