| // Copyright 2016 PDFium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
| |
| #ifndef CORE_FPDFAPI_PAGE_CPDF_STREAMPARSER_H_ |
| #define CORE_FPDFAPI_PAGE_CPDF_STREAMPARSER_H_ |
| |
| #include <memory> |
| #include <utility> |
| |
| #include "core/fpdfapi/parser/cpdf_dictionary.h" |
| #include "core/fpdfapi/parser/cpdf_document.h" |
| #include "core/fpdfapi/parser/cpdf_object.h" |
| #include "core/fpdfapi/parser/cpdf_stream.h" |
| #include "core/fxcrt/cfx_string_pool_template.h" |
| #include "core/fxcrt/cfx_weak_ptr.h" |
| |
| class CPDF_StreamParser { |
| public: |
| enum SyntaxType { EndOfData, Number, Keyword, Name, Others }; |
| |
| static uint32_t DecodeInlineStream(const uint8_t* src_buf, |
| uint32_t limit, |
| int width, |
| int height, |
| const CFX_ByteString& decoder, |
| CPDF_Dictionary* pParam, |
| uint8_t** dest_buf, |
| uint32_t* dest_size); |
| |
| CPDF_StreamParser(const uint8_t* pData, uint32_t dwSize); |
| CPDF_StreamParser(const uint8_t* pData, |
| uint32_t dwSize, |
| const CFX_WeakPtr<CFX_ByteStringPool>& pPool); |
| ~CPDF_StreamParser(); |
| |
| SyntaxType ParseNextElement(); |
| CFX_ByteStringC GetWord() const { |
| return CFX_ByteStringC(m_WordBuffer, m_WordSize); |
| } |
| uint32_t GetPos() const { return m_Pos; } |
| void SetPos(uint32_t pos) { m_Pos = pos; } |
| std::unique_ptr<CPDF_Object> GetObject() { return std::move(m_pLastObj); } |
| std::unique_ptr<CPDF_Object> ReadNextObject(bool bAllowNestedArray, |
| bool bInArray, |
| uint32_t dwRecursionLevel); |
| std::unique_ptr<CPDF_Stream> ReadInlineStream( |
| CPDF_Document* pDoc, |
| std::unique_ptr<CPDF_Dictionary> pDict, |
| CPDF_Object* pCSObj); |
| |
| private: |
| friend class cpdf_streamparser_ReadHexString_Test; |
| |
| void GetNextWord(bool& bIsNumber); |
| CFX_ByteString ReadString(); |
| CFX_ByteString ReadHexString(); |
| bool PositionIsInBounds() const; |
| |
| const uint8_t* m_pBuf; |
| uint32_t m_Size; // Length in bytes of m_pBuf. |
| uint32_t m_Pos; // Current byte position within m_pBuf. |
| uint8_t m_WordBuffer[256]; |
| uint32_t m_WordSize; |
| std::unique_ptr<CPDF_Object> m_pLastObj; |
| CFX_WeakPtr<CFX_ByteStringPool> m_pPool; |
| }; |
| |
| #endif // CORE_FPDFAPI_PAGE_CPDF_STREAMPARSER_H_ |