1 files changed, 36 insertions, 0 deletions
diff --git a/core/fxcrt/cfx_seekablemultistream.h b/core/fxcrt/cfx_seekablemultistream.h
new file mode 100644
index 0000000000..9138d7c321
--- /dev/null
+++ b/core/fxcrt/cfx_seekablemultistream.h
@@ -0,0 +1,36 @@
+// Copyright 2017 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_FXCRT_CFX_SEEKABLEMULTISTREAM_H_
+#define CORE_FXCRT_CFX_SEEKABLEMULTISTREAM_H_
+
+#include <vector>
+
+#include "core/fxcrt/fx_stream.h"
+#include "core/fxcrt/retain_ptr.h"
+
+class CPDF_Stream;
+class CPDF_StreamAcc;
+
+class CFX_SeekableMultiStream : public IFX_SeekableStream {
+ public:
+  explicit CFX_SeekableMultiStream(const std::vector<CPDF_Stream*>& streams);
+  ~CFX_SeekableMultiStream() override;
+
+  // IFX_SeekableReadStream
+  FX_FILESIZE GetPosition() override;
+  FX_FILESIZE GetSize() override;
+  bool ReadBlock(void* buffer, FX_FILESIZE offset, size_t size) override;
+  size_t ReadBlock(void* buffer, size_t size) override;
+  bool IsEOF() override;
+  bool Flush() override;
+  bool WriteBlock(const void* pData, FX_FILESIZE offset, size_t size) override;
+
+ private:
+  std::vector<RetainPtr<CPDF_StreamAcc>> m_Data;
+};
+
+#endif  // CORE_FXCRT_CFX_SEEKABLEMULTISTREAM_H_