1 // Copyright 2014 The PDFium Authors 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 CORE_FXCRT_CFX_FILEACCESS_WINDOWS_H_ 8 #define CORE_FXCRT_CFX_FILEACCESS_WINDOWS_H_ 9 10 #include <stddef.h> 11 #include <stdint.h> 12 13 #include "build/build_config.h" 14 #include "core/fxcrt/fileaccess_iface.h" 15 #include "core/fxcrt/fx_types.h" 16 #include "core/fxcrt/unowned_ptr_exclusion.h" 17 18 #if !BUILDFLAG(IS_WIN) 19 #error "Included on the wrong platform" 20 #endif 21 22 class CFX_FileAccess_Windows final : public FileAccessIface { 23 public: 24 CFX_FileAccess_Windows(); 25 ~CFX_FileAccess_Windows() override; 26 27 // FileAccessIface 28 bool Open(ByteStringView fileName) override; 29 void Close() override; 30 FX_FILESIZE GetSize() const override; 31 FX_FILESIZE GetPosition() const override; 32 FX_FILESIZE SetPosition(FX_FILESIZE pos) override; 33 size_t Read(pdfium::span<uint8_t> buffer) override; 34 size_t Write(pdfium::span<const uint8_t> buffer) override; 35 size_t ReadPos(pdfium::span<uint8_t> buffer, FX_FILESIZE pos) override; 36 bool Flush() override; 37 bool Truncate(FX_FILESIZE szFile) override; 38 39 private: 40 UNOWNED_PTR_EXCLUSION void* m_hFile = nullptr; // void type incompatible. 41 }; 42 43 #endif // CORE_FXCRT_CFX_FILEACCESS_WINDOWS_H_ 44