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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);
int32_t Continue();
bool SetFileVersion(int32_t fileVersion);
IFX_ArchiveStream* GetArchive() { return m_Archive.get(); }
uint32_t GetNextObjectNumber() { return ++m_dwLastObjNum; }
uint32_t GetLastObjectNumber() const { return m_dwLastObjNum; }
CPDF_CryptoHandler* GetCryptoHandler();
CPDF_Document* GetDocument() const { return m_pDocument.Get(); }
CPDF_Array* GetIDArray() const { return m_pIDArray.get(); }
CPDF_Dictionary* GetEncryptDict() const { return m_pEncryptDict.Get(); }
uint32_t GetEncryptObjectNumber() const { return m_dwEncryptObjNum; }
uint32_t GetObjectOffset(uint32_t objnum) { return m_ObjectOffsets[objnum]; }
bool HasObjectNumber(uint32_t objnum) {
return m_ObjectOffsets.find(objnum) != m_ObjectOffsets.end();
}
void SetObjectOffset(uint32_t objnum, FX_FILESIZE offset) {
m_ObjectOffsets[objnum] = offset;
}
bool IsIncremental() const { return !!(m_dwFlags & FPDFCREATE_INCREMENTAL); }
bool IsOriginal() const { return !(m_dwFlags & FPDFCREATE_NO_ORIGINAL); }
private:
void Clear();
void InitNewObjNumOffsets();
void InitID();
int32_t WriteDoc_Stage1();
int32_t WriteDoc_Stage2();
int32_t WriteDoc_Stage3();
int32_t WriteDoc_Stage4();
bool WriteOldIndirectObject(uint32_t objnum);
bool WriteOldObjs();
bool WriteNewObjs();
bool WriteDirectObj(uint32_t objnum, const CPDF_Object* pObj, bool bEncrypt);
bool WriteIndirectObj(uint32_t objnum, const CPDF_Object* pObj);
bool WriteStream(const CPDF_Object* pStream,
uint32_t objnum,
CPDF_CryptoHandler* pCrypto);
bool IsXRefNeedEnd();
UnownedPtr<CPDF_Document> const m_pDocument;
UnownedPtr<CPDF_Parser> const m_pParser;
bool m_bSecurityChanged;
UnownedPtr<CPDF_Dictionary> m_pEncryptDict;
uint32_t m_dwEncryptObjNum;
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;
int32_t m_iStage;
uint32_t m_dwFlags;
uint32_t m_CurObjNum;
FX_FILESIZE m_XrefStart;
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;
};
#endif // CORE_FPDFAPI_EDIT_CPDF_CREATOR_H_
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