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// 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_CONTENTPARSER_H_
#define CORE_FPDFAPI_PAGE_CPDF_CONTENTPARSER_H_
#include <memory>
#include <set>
#include <vector>
#include "core/fpdfapi/page/cpdf_pageobjectholder.h"
#include "core/fpdfapi/page/cpdf_streamcontentparser.h"
#include "core/fpdfapi/parser/cpdf_stream_acc.h"
#include "core/fxcrt/cfx_unowned_ptr.h"
class CPDF_AllStates;
class CPDF_Form;
class CPDF_Page;
class CPDF_StreamAcc;
class CPDF_Type3Char;
class CPDF_ContentParser {
public:
enum ParseStatus { Ready, ToBeContinued, Done };
CPDF_ContentParser();
~CPDF_ContentParser();
ParseStatus GetStatus() const { return m_Status; }
const CPDF_AllStates* GetCurStates() const {
return m_pParser ? m_pParser->GetCurStates() : nullptr;
}
void Start(CPDF_Page* pPage);
void Start(CPDF_Form* pForm,
CPDF_AllStates* pGraphicStates,
const CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
std::set<const uint8_t*>* parsedSet);
void Continue(IFX_PauseIndicator* pPause);
private:
enum InternalStage {
STAGE_GETCONTENT = 1,
STAGE_PARSE,
STAGE_CHECKCLIP,
};
ParseStatus m_Status;
InternalStage m_InternalStage;
CFX_UnownedPtr<CPDF_PageObjectHolder> m_pObjectHolder;
bool m_bForm;
CFX_UnownedPtr<CPDF_Type3Char> m_pType3Char;
uint32_t m_nStreams;
CFX_RetainPtr<CPDF_StreamAcc> m_pSingleStream;
std::vector<CFX_RetainPtr<CPDF_StreamAcc>> m_StreamArray;
uint8_t* m_pData;
uint32_t m_Size;
uint32_t m_CurrentOffset;
std::unique_ptr<std::set<const uint8_t*>> m_parsedSet;
// m_pParser has a reference to m_parsedSet, so must be below and thus
// destroyed first.
std::unique_ptr<CPDF_StreamContentParser> m_pParser;
};
#endif // CORE_FPDFAPI_PAGE_CPDF_CONTENTPARSER_H_
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