1 // Copyright 2016 PDFium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
6 
7 #ifndef XFA_FXFA_PARSER_CXFA_WIDETEXTREAD_H_
8 #define XFA_FXFA_PARSER_CXFA_WIDETEXTREAD_H_
9 
10 #include "core/fxcrt/cfx_retain_ptr.h"
11 #include "xfa/fgas/crt/fgas_stream.h"
12 
13 class CXFA_WideTextRead : public IFGAS_Stream {
14  public:
15   template <typename T, typename... Args>
16   friend CFX_RetainPtr<T> pdfium::MakeRetain(Args&&... args);
17 
18   // IFGAS_Stream
19   uint32_t GetAccessModes() const override;
20   int32_t GetLength() const override;
21   int32_t Seek(FX_STREAMSEEK eSeek, int32_t iOffset) override;
22   int32_t GetPosition() override;
23   bool IsEOF() const override;
24   int32_t ReadData(uint8_t* pBuffer, int32_t iBufferSize) override;
25   int32_t ReadString(FX_WCHAR* pStr, int32_t iMaxLength, bool& bEOS) override;
26   int32_t WriteData(const uint8_t* pBuffer, int32_t iBufferSize) override;
27   int32_t WriteString(const FX_WCHAR* pStr, int32_t iLength) override;
Flush()28   void Flush() override {}
29   bool SetLength(int32_t iLength) override;
30   int32_t GetBOM(uint8_t bom[4]) const override;
31   uint16_t GetCodePage() const override;
32   uint16_t SetCodePage(uint16_t wCodePage) override;
33   CFX_RetainPtr<IFGAS_Stream> CreateSharedStream(uint32_t dwAccess,
34                                                  int32_t iOffset,
35                                                  int32_t iLength) override;
36 
37   CFX_WideString GetSrcText() const;
38 
39  protected:
40   explicit CXFA_WideTextRead(const CFX_WideString& wsBuffer);
41   ~CXFA_WideTextRead() override;
42 
43   CFX_WideString m_wsBuffer;
44   int32_t m_iPosition;
45 };
46 
47 #endif  // XFA_FXFA_PARSER_CXFA_WIDETEXTREAD_H_
48