Split CPDF_Stream/CPDF_StreamAcc into separate files

core/src/fpdfapi/fpdf_parser/cpdf_stream.cpp

 // 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
 
 #include "core/include/fpdfapi/cpdf_stream.h"
 
 #include "core/include/fpdfapi/cpdf_dictionary.h"
+#include "core/include/fpdfapi/cpdf_stream_acc.h"
 #include "core/include/fpdfapi/fpdf_parser_decode.h"
 
 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())
@@ skipping 107 matching lines @@
   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_pData(nullptr),
-      m_dwSize(0),
-      m_bNewBuf(FALSE),
-      m_pImageParam(nullptr),
-      m_pStream(nullptr),
-      m_pSrcData(nullptr) {}
-
-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 = nullptr;
-  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 nullptr;
-  }
-  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 = nullptr;
-    m_dwSize = 0;
-    return p;
-  }
-  uint8_t* p = FX_Alloc(uint8_t, m_dwSize);
-  FXSYS_memcpy(p, m_pData, m_dwSize);
-  return p;
-}