1 files changed, 61 insertions, 0 deletions
diff --git a/core/fpdfapi/parser/cpdf_stream.h b/core/fpdfapi/parser/cpdf_stream.h
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+++ b/core/fpdfapi/parser/cpdf_stream.h
@@ -0,0 +1,61 @@
+// 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_PARSER_CPDF_STREAM_H_
+#define CORE_FPDFAPI_PARSER_CPDF_STREAM_H_
+
+#include <memory>
+#include <set>
+
+#include "core/fpdfapi/parser/cpdf_dictionary.h"
+#include "core/fpdfapi/parser/cpdf_object.h"
+#include "core/fxcrt/fx_basic.h"
+
+class CPDF_Stream : public CPDF_Object {
+ public:
+  CPDF_Stream();
+
+  // Takes ownership of |pData| and |pDict|.
+  CPDF_Stream(uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict);
+
+  // CPDF_Object.
+  Type GetType() const override;
+  CPDF_Object* Clone() const override;
+  CPDF_Dictionary* GetDict() const override;
+  CFX_WideString GetUnicodeText() const override;
+  bool IsStream() const override;
+  CPDF_Stream* AsStream() override;
+  const CPDF_Stream* AsStream() const override;
+
+  uint32_t GetRawSize() const { return m_dwSize; }
+  uint8_t* GetRawData() const { return m_pDataBuf.get(); }
+
+  // Does not takes onwership of |pData|, copies into internally-owned buffer.
+  void SetData(const uint8_t* pData, uint32_t size);
+
+  void InitStream(const uint8_t* pData, uint32_t size, CPDF_Dictionary* pDict);
+  void InitStreamFromFile(IFX_FileRead* pFile, CPDF_Dictionary* pDict);
+
+  FX_BOOL ReadRawData(FX_FILESIZE start_pos,
+                      uint8_t* pBuf,
+                      uint32_t buf_size) const;
+
+  bool IsMemoryBased() const { return m_bMemoryBased; }
+
+ protected:
+  ~CPDF_Stream() override;
+  CPDF_Object* CloneNonCyclic(
+      bool bDirect,
+      std::set<const CPDF_Object*>* pVisited) const override;
+
+  std::unique_ptr<CPDF_Dictionary, ReleaseDeleter<CPDF_Dictionary>> m_pDict;
+  bool m_bMemoryBased = true;
+  uint32_t m_dwSize = 0;
+  std::unique_ptr<uint8_t, FxFreeDeleter> m_pDataBuf;
+  IFX_FileRead* m_pFile = nullptr;
+};
+
+#endif  // CORE_FPDFAPI_PARSER_CPDF_STREAM_H_