| // 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 |
| |
| #include "core/include/fpdfapi/fpdf_objects.h" |
| |
| #include <algorithm> |
| |
| #include "core/include/fpdfapi/fpdf_parser.h" |
| #include "core/include/fxcrt/fx_string.h" |
| #include "third_party/base/stl_util.h" |
| |
| void CPDF_Object::Release() { |
| if (m_ObjNum) { |
| return; |
| } |
| Destroy(); |
| } |
| |
| CPDF_Number::CPDF_Number(const CFX_ByteStringC& str) { |
| FX_atonum(str, m_bInteger, &m_Integer); |
| } |
| |
| void CPDF_Number::SetString(const CFX_ByteString& str) { |
| FX_atonum(str, m_bInteger, &m_Integer); |
| } |
| |
| CFX_ByteString CPDF_Number::GetString() const { |
| return m_bInteger ? CFX_ByteString::FormatInteger(m_Integer, FXFORMAT_SIGNED) |
| : CFX_ByteString::FormatFloat(m_Float); |
| } |
| |
| CPDF_String::CPDF_String(const CFX_WideString& str) : m_bHex(FALSE) { |
| m_String = PDF_EncodeText(str); |
| } |
| |
| CFX_WideString CPDF_String::GetUnicodeText() const { |
| return PDF_DecodeText(m_String); |
| } |
| |
| CFX_WideString CPDF_Name::GetUnicodeText() const { |
| return PDF_DecodeText(m_Name); |
| } |
| |
| CPDF_Array::~CPDF_Array() { |
| int size = m_Objects.GetSize(); |
| CPDF_Object** pList = m_Objects.GetData(); |
| for (int i = 0; i < size; i++) { |
| if (pList[i]) |
| pList[i]->Release(); |
| } |
| } |
| |
| CPDF_Object* CPDF_Array::Clone(FX_BOOL bDirect) const { |
| CPDF_Array* pCopy = new CPDF_Array(); |
| for (int i = 0; i < GetCount(); i++) { |
| CPDF_Object* value = m_Objects.GetAt(i); |
| pCopy->m_Objects.Add(value->Clone(bDirect)); |
| } |
| return pCopy; |
| } |
| |
| CFX_FloatRect CPDF_Array::GetRect() { |
| CFX_FloatRect rect; |
| if (!IsArray() || m_Objects.GetSize() != 4) |
| return rect; |
| |
| rect.left = GetNumberAt(0); |
| rect.bottom = GetNumberAt(1); |
| rect.right = GetNumberAt(2); |
| rect.top = GetNumberAt(3); |
| return rect; |
| } |
| |
| CFX_Matrix CPDF_Array::GetMatrix() { |
| CFX_Matrix matrix; |
| if (!IsArray() || m_Objects.GetSize() != 6) |
| return matrix; |
| |
| matrix.Set(GetNumberAt(0), GetNumberAt(1), GetNumberAt(2), GetNumberAt(3), |
| GetNumberAt(4), GetNumberAt(5)); |
| return matrix; |
| } |
| |
| CPDF_Object* CPDF_Array::GetElement(FX_DWORD i) const { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return nullptr; |
| return m_Objects.GetAt(i); |
| } |
| |
| CPDF_Object* CPDF_Array::GetElementValue(FX_DWORD i) const { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return nullptr; |
| return m_Objects.GetAt(i)->GetDirect(); |
| } |
| |
| CFX_ByteString CPDF_Array::GetStringAt(FX_DWORD i) const { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return CFX_ByteString(); |
| return m_Objects.GetAt(i)->GetString(); |
| } |
| |
| CFX_ByteStringC CPDF_Array::GetConstStringAt(FX_DWORD i) const { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return CFX_ByteStringC(); |
| return m_Objects.GetAt(i)->GetConstString(); |
| } |
| |
| int CPDF_Array::GetIntegerAt(FX_DWORD i) const { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return 0; |
| return m_Objects.GetAt(i)->GetInteger(); |
| } |
| |
| FX_FLOAT CPDF_Array::GetNumberAt(FX_DWORD i) const { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return 0; |
| return m_Objects.GetAt(i)->GetNumber(); |
| } |
| |
| CPDF_Dictionary* CPDF_Array::GetDictAt(FX_DWORD i) const { |
| CPDF_Object* p = GetElementValue(i); |
| if (!p) |
| return NULL; |
| if (CPDF_Dictionary* pDict = p->AsDictionary()) |
| return pDict; |
| if (CPDF_Stream* pStream = p->AsStream()) |
| return pStream->GetDict(); |
| return NULL; |
| } |
| |
| CPDF_Stream* CPDF_Array::GetStreamAt(FX_DWORD i) const { |
| return ToStream(GetElementValue(i)); |
| } |
| |
| CPDF_Array* CPDF_Array::GetArrayAt(FX_DWORD i) const { |
| return ToArray(GetElementValue(i)); |
| } |
| |
| void CPDF_Array::RemoveAt(FX_DWORD i, int nCount) { |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return; |
| |
| if (nCount <= 0 || nCount > m_Objects.GetSize() - i) |
| return; |
| |
| for (int j = 0; j < nCount; ++j) { |
| if (CPDF_Object* p = m_Objects.GetAt(i + j)) |
| p->Release(); |
| } |
| m_Objects.RemoveAt(i, nCount); |
| } |
| |
| void CPDF_Array::SetAt(FX_DWORD i, |
| CPDF_Object* pObj, |
| CPDF_IndirectObjectHolder* pObjs) { |
| ASSERT(IsArray()); |
| ASSERT(i < (FX_DWORD)m_Objects.GetSize()); |
| if (i >= (FX_DWORD)m_Objects.GetSize()) |
| return; |
| if (CPDF_Object* pOld = m_Objects.GetAt(i)) |
| pOld->Release(); |
| if (pObj->GetObjNum()) { |
| ASSERT(pObjs); |
| pObj = new CPDF_Reference(pObjs, pObj->GetObjNum()); |
| } |
| m_Objects.SetAt(i, pObj); |
| } |
| |
| void CPDF_Array::InsertAt(FX_DWORD index, |
| CPDF_Object* pObj, |
| CPDF_IndirectObjectHolder* pObjs) { |
| if (pObj->GetObjNum()) { |
| ASSERT(pObjs); |
| pObj = new CPDF_Reference(pObjs, pObj->GetObjNum()); |
| } |
| m_Objects.InsertAt(index, pObj); |
| } |
| |
| void CPDF_Array::Add(CPDF_Object* pObj, CPDF_IndirectObjectHolder* pObjs) { |
| if (pObj->GetObjNum()) { |
| ASSERT(pObjs); |
| pObj = new CPDF_Reference(pObjs, pObj->GetObjNum()); |
| } |
| m_Objects.Add(pObj); |
| } |
| |
| void CPDF_Array::AddName(const CFX_ByteString& str) { |
| ASSERT(IsArray()); |
| Add(new CPDF_Name(str)); |
| } |
| |
| void CPDF_Array::AddString(const CFX_ByteString& str) { |
| ASSERT(IsArray()); |
| Add(new CPDF_String(str, FALSE)); |
| } |
| |
| void CPDF_Array::AddInteger(int i) { |
| ASSERT(IsArray()); |
| Add(new CPDF_Number(i)); |
| } |
| |
| void CPDF_Array::AddNumber(FX_FLOAT f) { |
| ASSERT(IsArray()); |
| CPDF_Number* pNumber = new CPDF_Number(f); |
| Add(pNumber); |
| } |
| |
| void CPDF_Array::AddReference(CPDF_IndirectObjectHolder* pDoc, |
| FX_DWORD objnum) { |
| ASSERT(IsArray()); |
| Add(new CPDF_Reference(pDoc, objnum)); |
| } |
| |
| CPDF_Dictionary::~CPDF_Dictionary() { |
| for (const auto& it : m_Map) { |
| it.second->Release(); |
| } |
| } |
| |
| CPDF_Object* CPDF_Dictionary::Clone(FX_BOOL bDirect) const { |
| CPDF_Dictionary* pCopy = new CPDF_Dictionary(); |
| for (const auto& it : *this) |
| pCopy->m_Map.insert(std::make_pair(it.first, it.second->Clone(bDirect))); |
| return pCopy; |
| } |
| |
| CPDF_Object* CPDF_Dictionary::GetElement(const CFX_ByteStringC& key) const { |
| auto it = m_Map.find(key); |
| if (it == m_Map.end()) |
| return nullptr; |
| return it->second; |
| } |
| CPDF_Object* CPDF_Dictionary::GetElementValue( |
| const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElement(key); |
| return p ? p->GetDirect() : nullptr; |
| } |
| |
| CFX_ByteString CPDF_Dictionary::GetStringBy(const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetString(); |
| } |
| return CFX_ByteString(); |
| } |
| |
| CFX_ByteStringC CPDF_Dictionary::GetConstStringBy( |
| const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetConstString(); |
| } |
| return CFX_ByteStringC(); |
| } |
| |
| CFX_WideString CPDF_Dictionary::GetUnicodeTextBy( |
| const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElement(key); |
| if (CPDF_Reference* pRef = ToReference(p)) |
| p = pRef->GetDirect(); |
| return p ? p->GetUnicodeText() : CFX_WideString(); |
| } |
| |
| CFX_ByteString CPDF_Dictionary::GetStringBy(const CFX_ByteStringC& key, |
| const CFX_ByteStringC& def) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetString(); |
| } |
| return CFX_ByteString(def); |
| } |
| |
| CFX_ByteStringC CPDF_Dictionary::GetConstStringBy( |
| const CFX_ByteStringC& key, |
| const CFX_ByteStringC& def) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetConstString(); |
| } |
| return CFX_ByteStringC(def); |
| } |
| |
| int CPDF_Dictionary::GetIntegerBy(const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetInteger(); |
| } |
| return 0; |
| } |
| |
| int CPDF_Dictionary::GetIntegerBy(const CFX_ByteStringC& key, int def) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetInteger(); |
| } |
| return def; |
| } |
| |
| FX_FLOAT CPDF_Dictionary::GetNumberBy(const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElement(key); |
| if (p) { |
| return p->GetNumber(); |
| } |
| return 0; |
| } |
| |
| FX_BOOL CPDF_Dictionary::GetBooleanBy(const CFX_ByteStringC& key, |
| FX_BOOL bDefault) const { |
| CPDF_Object* p = GetElement(key); |
| if (ToBoolean(p)) |
| return p->GetInteger(); |
| return bDefault; |
| } |
| |
| CPDF_Dictionary* CPDF_Dictionary::GetDictBy(const CFX_ByteStringC& key) const { |
| CPDF_Object* p = GetElementValue(key); |
| if (!p) |
| return nullptr; |
| if (CPDF_Dictionary* pDict = p->AsDictionary()) |
| return pDict; |
| if (CPDF_Stream* pStream = p->AsStream()) |
| return pStream->GetDict(); |
| return nullptr; |
| } |
| |
| CPDF_Array* CPDF_Dictionary::GetArrayBy(const CFX_ByteStringC& key) const { |
| return ToArray(GetElementValue(key)); |
| } |
| |
| CPDF_Stream* CPDF_Dictionary::GetStreamBy(const CFX_ByteStringC& key) const { |
| return ToStream(GetElementValue(key)); |
| } |
| |
| CFX_FloatRect CPDF_Dictionary::GetRectBy(const CFX_ByteStringC& key) const { |
| CFX_FloatRect rect; |
| CPDF_Array* pArray = GetArrayBy(key); |
| if (pArray) |
| rect = pArray->GetRect(); |
| return rect; |
| } |
| |
| CFX_Matrix CPDF_Dictionary::GetMatrixBy(const CFX_ByteStringC& key) const { |
| CFX_Matrix matrix; |
| CPDF_Array* pArray = GetArrayBy(key); |
| if (pArray) |
| matrix = pArray->GetMatrix(); |
| return matrix; |
| } |
| |
| FX_BOOL CPDF_Dictionary::KeyExist(const CFX_ByteStringC& key) const { |
| return pdfium::ContainsKey(m_Map, key); |
| } |
| |
| void CPDF_Dictionary::SetAt(const CFX_ByteStringC& key, CPDF_Object* pObj) { |
| ASSERT(IsDictionary()); |
| // Avoid 2 constructions of CFX_ByteString. |
| CFX_ByteString key_bytestring = key; |
| auto it = m_Map.find(key_bytestring); |
| if (it == m_Map.end()) { |
| if (pObj) { |
| m_Map.insert(std::make_pair(key_bytestring, pObj)); |
| } |
| return; |
| } |
| |
| if (it->second == pObj) |
| return; |
| it->second->Release(); |
| |
| if (pObj) |
| it->second = pObj; |
| else |
| m_Map.erase(it); |
| } |
| |
| void CPDF_Dictionary::RemoveAt(const CFX_ByteStringC& key) { |
| auto it = m_Map.find(key); |
| if (it == m_Map.end()) |
| return; |
| |
| it->second->Release(); |
| m_Map.erase(it); |
| } |
| |
| void CPDF_Dictionary::ReplaceKey(const CFX_ByteStringC& oldkey, |
| const CFX_ByteStringC& newkey) { |
| auto old_it = m_Map.find(oldkey); |
| if (old_it == m_Map.end()) |
| return; |
| |
| // Avoid 2 constructions of CFX_ByteString. |
| CFX_ByteString newkey_bytestring = newkey; |
| auto new_it = m_Map.find(newkey_bytestring); |
| if (new_it == old_it) |
| return; |
| |
| if (new_it != m_Map.end()) { |
| new_it->second->Release(); |
| new_it->second = old_it->second; |
| } else { |
| m_Map.insert(std::make_pair(newkey_bytestring, old_it->second)); |
| } |
| m_Map.erase(old_it); |
| } |
| |
| void CPDF_Dictionary::SetAtInteger(const CFX_ByteStringC& key, int i) { |
| SetAt(key, new CPDF_Number(i)); |
| } |
| |
| void CPDF_Dictionary::SetAtName(const CFX_ByteStringC& key, |
| const CFX_ByteString& name) { |
| SetAt(key, new CPDF_Name(name)); |
| } |
| |
| void CPDF_Dictionary::SetAtString(const CFX_ByteStringC& key, |
| const CFX_ByteString& str) { |
| SetAt(key, new CPDF_String(str, FALSE)); |
| } |
| |
| void CPDF_Dictionary::SetAtReference(const CFX_ByteStringC& key, |
| CPDF_IndirectObjectHolder* pDoc, |
| FX_DWORD objnum) { |
| SetAt(key, new CPDF_Reference(pDoc, objnum)); |
| } |
| |
| void CPDF_Dictionary::AddReference(const CFX_ByteStringC& key, |
| CPDF_IndirectObjectHolder* pDoc, |
| FX_DWORD objnum) { |
| SetAt(key, new CPDF_Reference(pDoc, objnum)); |
| } |
| |
| void CPDF_Dictionary::SetAtNumber(const CFX_ByteStringC& key, FX_FLOAT f) { |
| CPDF_Number* pNumber = new CPDF_Number(f); |
| SetAt(key, pNumber); |
| } |
| |
| void CPDF_Dictionary::SetAtBoolean(const CFX_ByteStringC& key, FX_BOOL bValue) { |
| SetAt(key, new CPDF_Boolean(bValue)); |
| } |
| |
| void CPDF_Dictionary::SetAtRect(const CFX_ByteStringC& key, |
| const CFX_FloatRect& rect) { |
| CPDF_Array* pArray = new CPDF_Array; |
| pArray->AddNumber(rect.left); |
| pArray->AddNumber(rect.bottom); |
| pArray->AddNumber(rect.right); |
| pArray->AddNumber(rect.top); |
| SetAt(key, pArray); |
| } |
| |
| void CPDF_Dictionary::SetAtMatrix(const CFX_ByteStringC& key, |
| const CFX_Matrix& matrix) { |
| CPDF_Array* pArray = new CPDF_Array; |
| pArray->AddNumber(matrix.a); |
| pArray->AddNumber(matrix.b); |
| pArray->AddNumber(matrix.c); |
| pArray->AddNumber(matrix.d); |
| pArray->AddNumber(matrix.e); |
| pArray->AddNumber(matrix.f); |
| SetAt(key, pArray); |
| } |
| |
| CPDF_Stream::CPDF_Stream(uint8_t* pData, FX_DWORD size, CPDF_Dictionary* pDict) |
| : m_pDict(pDict), |
| m_dwSize(size), |
| m_GenNum(kMemoryBasedGenNum), |
| m_pDataBuf(pData) {} |
| |
| CPDF_Stream::~CPDF_Stream() { |
| if (IsMemoryBased()) |
| FX_Free(m_pDataBuf); |
| |
| if (m_pDict) |
| m_pDict->Release(); |
| } |
| |
| void CPDF_Stream::InitStreamInternal(CPDF_Dictionary* pDict) { |
| if (pDict) { |
| if (m_pDict) |
| m_pDict->Release(); |
| m_pDict = pDict; |
| } |
| if (IsMemoryBased()) |
| FX_Free(m_pDataBuf); |
| |
| m_GenNum = 0; |
| m_pFile = nullptr; |
| } |
| |
| void CPDF_Stream::InitStream(uint8_t* pData, |
| FX_DWORD size, |
| CPDF_Dictionary* pDict) { |
| InitStreamInternal(pDict); |
| m_GenNum = kMemoryBasedGenNum; |
| m_pDataBuf = FX_Alloc(uint8_t, size); |
| if (pData) { |
| FXSYS_memcpy(m_pDataBuf, pData, size); |
| } |
| m_dwSize = size; |
| if (m_pDict) { |
| m_pDict->SetAtInteger("Length", size); |
| } |
| } |
| |
| CPDF_Object* CPDF_Stream::Clone(FX_BOOL bDirect) const { |
| CPDF_StreamAcc acc; |
| acc.LoadAllData(this, TRUE); |
| FX_DWORD streamSize = acc.GetSize(); |
| CPDF_Dictionary* pDict = GetDict(); |
| if (pDict) { |
| pDict = ToDictionary(pDict->Clone(bDirect)); |
| } |
| return new CPDF_Stream(acc.DetachData(), streamSize, pDict); |
| } |
| |
| void CPDF_Stream::SetData(const uint8_t* pData, |
| FX_DWORD size, |
| FX_BOOL bCompressed, |
| FX_BOOL bKeepBuf) { |
| if (IsMemoryBased()) |
| FX_Free(m_pDataBuf); |
| m_GenNum = kMemoryBasedGenNum; |
| |
| if (bKeepBuf) { |
| m_pDataBuf = const_cast<uint8_t*>(pData); |
| } else { |
| m_pDataBuf = FX_Alloc(uint8_t, size); |
| if (pData) { |
| FXSYS_memcpy(m_pDataBuf, pData, size); |
| } |
| } |
| m_dwSize = size; |
| if (!m_pDict) |
| m_pDict = new CPDF_Dictionary; |
| m_pDict->SetAtInteger("Length", size); |
| if (!bCompressed) { |
| m_pDict->RemoveAt("Filter"); |
| m_pDict->RemoveAt("DecodeParms"); |
| } |
| } |
| |
| FX_BOOL CPDF_Stream::ReadRawData(FX_FILESIZE offset, |
| uint8_t* buf, |
| FX_DWORD size) const { |
| if (!IsMemoryBased() && m_pFile) |
| return m_pFile->ReadBlock(buf, offset, size); |
| |
| if (m_pDataBuf) |
| FXSYS_memcpy(buf, m_pDataBuf + offset, size); |
| return TRUE; |
| } |
| void CPDF_Stream::InitStreamFromFile(IFX_FileRead* pFile, |
| CPDF_Dictionary* pDict) { |
| InitStreamInternal(pDict); |
| m_pFile = pFile; |
| m_dwSize = (FX_DWORD)pFile->GetSize(); |
| if (m_pDict) { |
| m_pDict->SetAtInteger("Length", m_dwSize); |
| } |
| } |
| |
| CFX_WideString CPDF_Stream::GetUnicodeText() const { |
| CPDF_StreamAcc stream; |
| stream.LoadAllData(this, FALSE); |
| return PDF_DecodeText(stream.GetData(), stream.GetSize()); |
| } |
| |
| CPDF_StreamAcc::CPDF_StreamAcc() { |
| m_bNewBuf = FALSE; |
| m_pData = NULL; |
| m_dwSize = 0; |
| m_pImageParam = NULL; |
| m_pStream = NULL; |
| m_pSrcData = NULL; |
| } |
| void CPDF_StreamAcc::LoadAllData(const CPDF_Stream* pStream, |
| FX_BOOL bRawAccess, |
| FX_DWORD estimated_size, |
| FX_BOOL bImageAcc) { |
| if (!pStream) |
| return; |
| |
| m_pStream = pStream; |
| if (pStream->IsMemoryBased() && |
| (!pStream->GetDict()->KeyExist("Filter") || bRawAccess)) { |
| m_dwSize = pStream->GetRawSize(); |
| m_pData = pStream->GetRawData(); |
| return; |
| } |
| uint8_t* pSrcData; |
| FX_DWORD dwSrcSize = pStream->GetRawSize(); |
| if (dwSrcSize == 0) |
| return; |
| |
| if (!pStream->IsMemoryBased()) { |
| pSrcData = m_pSrcData = FX_Alloc(uint8_t, dwSrcSize); |
| if (!pStream->ReadRawData(0, pSrcData, dwSrcSize)) |
| return; |
| } else { |
| pSrcData = pStream->GetRawData(); |
| } |
| uint8_t* pDecryptedData = pSrcData; |
| FX_DWORD dwDecryptedSize = dwSrcSize; |
| if (!pStream->GetDict()->KeyExist("Filter") || bRawAccess) { |
| m_pData = pDecryptedData; |
| m_dwSize = dwDecryptedSize; |
| } else { |
| FX_BOOL bRet = PDF_DataDecode( |
| pDecryptedData, dwDecryptedSize, m_pStream->GetDict(), m_pData, |
| m_dwSize, m_ImageDecoder, m_pImageParam, estimated_size, bImageAcc); |
| if (!bRet) { |
| m_pData = pDecryptedData; |
| m_dwSize = dwDecryptedSize; |
| } |
| } |
| if (pSrcData != pStream->GetRawData() && pSrcData != m_pData) { |
| FX_Free(pSrcData); |
| } |
| if (pDecryptedData != pSrcData && pDecryptedData != m_pData) { |
| FX_Free(pDecryptedData); |
| } |
| m_pSrcData = NULL; |
| m_bNewBuf = m_pData != pStream->GetRawData(); |
| } |
| |
| CPDF_StreamAcc::~CPDF_StreamAcc() { |
| if (m_bNewBuf) { |
| FX_Free(m_pData); |
| } |
| FX_Free(m_pSrcData); |
| } |
| |
| const uint8_t* CPDF_StreamAcc::GetData() const { |
| if (m_bNewBuf) { |
| return m_pData; |
| } |
| if (!m_pStream) { |
| return NULL; |
| } |
| return m_pStream->GetRawData(); |
| } |
| |
| FX_DWORD CPDF_StreamAcc::GetSize() const { |
| if (m_bNewBuf) { |
| return m_dwSize; |
| } |
| if (!m_pStream) { |
| return 0; |
| } |
| return m_pStream->GetRawSize(); |
| } |
| |
| uint8_t* CPDF_StreamAcc::DetachData() { |
| if (m_bNewBuf) { |
| uint8_t* p = m_pData; |
| m_pData = NULL; |
| m_dwSize = 0; |
| return p; |
| } |
| uint8_t* p = FX_Alloc(uint8_t, m_dwSize); |
| FXSYS_memcpy(p, m_pData, m_dwSize); |
| return p; |
| } |
| |
| CPDF_Object* CPDF_Reference::Clone(FX_BOOL bDirect) const { |
| if (bDirect) { |
| auto* pDirect = GetDirect(); |
| return pDirect ? pDirect->Clone(TRUE) : nullptr; |
| } |
| return new CPDF_Reference(m_pObjList, m_RefObjNum); |
| } |
| |
| void CPDF_Reference::SetRef(CPDF_IndirectObjectHolder* pDoc, FX_DWORD objnum) { |
| m_pObjList = pDoc; |
| m_RefObjNum = objnum; |
| } |
| |
| CPDF_Object* CPDF_Reference::GetDirect() const { |
| return m_pObjList ? m_pObjList->GetIndirectObject(m_RefObjNum) : nullptr; |
| } |
| |
| CPDF_IndirectObjectHolder::CPDF_IndirectObjectHolder(CPDF_Parser* pParser) |
| : m_pParser(pParser), m_LastObjNum(0) { |
| if (pParser) |
| m_LastObjNum = m_pParser->GetLastObjNum(); |
| } |
| |
| CPDF_IndirectObjectHolder::~CPDF_IndirectObjectHolder() { |
| for (const auto& pair : m_IndirectObjs) { |
| pair.second->Destroy(); |
| } |
| } |
| |
| CPDF_Object* CPDF_IndirectObjectHolder::GetIndirectObject(FX_DWORD objnum) { |
| if (objnum == 0) |
| return nullptr; |
| |
| auto it = m_IndirectObjs.find(objnum); |
| if (it != m_IndirectObjs.end()) |
| return it->second->GetObjNum() != -1 ? it->second : nullptr; |
| |
| if (!m_pParser) |
| return nullptr; |
| |
| CPDF_Object* pObj = m_pParser->ParseIndirectObject(this, objnum); |
| if (!pObj) |
| return nullptr; |
| |
| pObj->m_ObjNum = objnum; |
| m_LastObjNum = std::max(m_LastObjNum, objnum); |
| if (m_IndirectObjs[objnum]) |
| m_IndirectObjs[objnum]->Destroy(); |
| |
| m_IndirectObjs[objnum] = pObj; |
| return pObj; |
| } |
| |
| FX_DWORD CPDF_IndirectObjectHolder::AddIndirectObject(CPDF_Object* pObj) { |
| if (pObj->m_ObjNum) { |
| return pObj->m_ObjNum; |
| } |
| m_LastObjNum++; |
| m_IndirectObjs[m_LastObjNum] = pObj; |
| pObj->m_ObjNum = m_LastObjNum; |
| return m_LastObjNum; |
| } |
| |
| void CPDF_IndirectObjectHolder::ReleaseIndirectObject(FX_DWORD objnum) { |
| auto it = m_IndirectObjs.find(objnum); |
| if (it == m_IndirectObjs.end() || it->second->GetObjNum() == -1) |
| return; |
| it->second->Destroy(); |
| m_IndirectObjs.erase(it); |
| } |
| |
| FX_BOOL CPDF_IndirectObjectHolder::InsertIndirectObject(FX_DWORD objnum, |
| CPDF_Object* pObj) { |
| if (!objnum || !pObj) |
| return FALSE; |
| auto it = m_IndirectObjs.find(objnum); |
| if (it != m_IndirectObjs.end()) { |
| if (pObj->GetGenNum() <= it->second->GetGenNum()) { |
| pObj->Destroy(); |
| return FALSE; |
| } |
| it->second->Destroy(); |
| } |
| pObj->m_ObjNum = objnum; |
| m_IndirectObjs[objnum] = pObj; |
| m_LastObjNum = std::max(m_LastObjNum, objnum); |
| return TRUE; |
| } |