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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_streamcontentparser.h"
#include "core/fpdfapi/parser/cpdf_stream_acc.h"
#include "core/fxcrt/maybe_owned.h"
#include "core/fxcrt/unowned_ptr.h"
class CPDF_AllStates;
class CPDF_Form;
class CPDF_Page;
class CPDF_PageObjectHolder;
class CPDF_StreamAcc;
class CPDF_Type3Char;
class CPDF_ContentParser {
public:
explicit CPDF_ContentParser(CPDF_Page* pPage);
CPDF_ContentParser(CPDF_Form* pForm,
CPDF_AllStates* pGraphicStates,
const CFX_Matrix* pParentMatrix,
CPDF_Type3Char* pType3Char,
std::set<const uint8_t*>* parsedSet);
~CPDF_ContentParser();
const CPDF_AllStates* GetCurStates() const {
return m_pParser ? m_pParser->GetCurStates() : nullptr;
}
// Returns whether to continue or not.
bool Continue(PauseIndicatorIface* pPause);
private:
enum class Stage : uint8_t {
kGetContent = 1,
kPrepareContent,
kParse,
kCheckClip,
kComplete,
};
Stage GetContent();
Stage PrepareContent();
Stage Parse();
Stage CheckClip();
Stage m_CurrentStage;
UnownedPtr<CPDF_PageObjectHolder> const m_pObjectHolder;
UnownedPtr<CPDF_Type3Char> m_pType3Char; // Only used when parsing forms.
RetainPtr<CPDF_StreamAcc> m_pSingleStream;
std::vector<RetainPtr<CPDF_StreamAcc>> m_StreamArray;
std::vector<uint32_t> m_StreamSegmentOffsets;
MaybeOwned<uint8_t, FxFreeDeleter> m_pData;
uint32_t m_nStreams = 0;
uint32_t m_Size = 0;
uint32_t m_CurrentOffset = 0;
// Only used when parsing pages.
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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