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// Copyright 2014 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_EDIT_CPDF_CREATOR_H_
#define CORE_FPDFAPI_EDIT_CPDF_CREATOR_H_
#include <map>
#include <memory>
#include <vector>
#include "core/fxcrt/fx_stream.h"
#include "core/fxcrt/maybe_owned.h"
#include "core/fxcrt/retain_ptr.h"
#include "core/fxcrt/unowned_ptr.h"
class CPDF_Array;
class CPDF_CryptoHandler;
class CPDF_SecurityHandler;
class CPDF_Dictionary;
class CPDF_Document;
class CPDF_Object;
class CPDF_Parser;
#define FPDFCREATE_INCREMENTAL 1
#define FPDFCREATE_NO_ORIGINAL 2
class CPDF_Creator {
public:
explicit CPDF_Creator(CPDF_Document* pDoc,
const RetainPtr<IFX_WriteStream>& archive);
~CPDF_Creator();
void RemoveSecurity();
bool Create(uint32_t flags);
bool SetFileVersion(int32_t fileVersion);
private:
enum class Stage {
kInvalid = -1,
kInit0 = 0,
kWriteHeader10 = 10,
kWriteIncremental15 = 15,
kInitWriteObjs20 = 20,
kWriteOldObjs21 = 21,
kInitWriteNewObjs25 = 25,
kWriteNewObjs26 = 26,
kWriteEncryptDict27 = 27,
kInitWriteXRefs80 = 80,
kWriteXrefsNotIncremental81 = 81,
kWriteXrefsIncremental82 = 82,
kWriteTrailerAndFinish90 = 90,
kComplete100 = 100,
};
bool Continue();
void Clear();
void InitNewObjNumOffsets();
void InitID();
CPDF_Creator::Stage WriteDoc_Stage1();
CPDF_Creator::Stage WriteDoc_Stage2();
CPDF_Creator::Stage WriteDoc_Stage3();
CPDF_Creator::Stage WriteDoc_Stage4();
bool WriteOldIndirectObject(uint32_t objnum);
bool WriteOldObjs();
bool WriteNewObjs();
bool WriteIndirectObj(uint32_t objnum, const CPDF_Object* pObj);
CPDF_CryptoHandler* GetCryptoHandler();
UnownedPtr<CPDF_Document> const m_pDocument;
UnownedPtr<const CPDF_Parser> const m_pParser;
UnownedPtr<const CPDF_Dictionary> m_pEncryptDict;
std::unique_ptr<CPDF_Dictionary> m_pNewEncryptDict;
fxcrt::MaybeOwned<CPDF_SecurityHandler> m_pSecurityHandler;
UnownedPtr<const CPDF_Object> m_pMetadata;
uint32_t m_dwLastObjNum;
std::unique_ptr<IFX_ArchiveStream> m_Archive;
FX_FILESIZE m_SavedOffset = 0;
Stage m_iStage = Stage::kInvalid;
uint32_t m_CurObjNum = 0;
FX_FILESIZE m_XrefStart = 0;
std::map<uint32_t, FX_FILESIZE> m_ObjectOffsets;
std::vector<uint32_t> m_NewObjNumArray; // Sorted, ascending.
std::unique_ptr<CPDF_Array> m_pIDArray;
int32_t m_FileVersion = 0;
bool m_bSecurityChanged = false;
bool m_IsIncremental = false;
bool m_IsOriginal = false;
};
#endif // CORE_FPDFAPI_EDIT_CPDF_CREATOR_H_
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