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_POSIX_H_ 8 #define CORE_FXCRT_CFX_FILEACCESS_POSIX_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 17 #if !BUILDFLAG(IS_POSIX) && !BUILDFLAG(IS_FUCHSIA) 18 #error "Included on the wrong platform" 19 #endif 20 21 class CFX_FileAccess_Posix final : public FileAccessIface { 22 public: 23 CFX_FileAccess_Posix(); 24 ~CFX_FileAccess_Posix() override; 25 26 // FileAccessIface: 27 bool Open(ByteStringView fileName) override; 28 void Close() override; 29 FX_FILESIZE GetSize() const override; 30 FX_FILESIZE GetPosition() const override; 31 FX_FILESIZE SetPosition(FX_FILESIZE pos) override; 32 size_t Read(void* pBuffer, size_t szBuffer) override; 33 size_t Write(const void* pBuffer, size_t szBuffer) override; 34 size_t ReadPos(void* pBuffer, size_t szBuffer, FX_FILESIZE pos) override; 35 size_t WritePos(const void* pBuffer, 36 size_t szBuffer, 37 FX_FILESIZE pos) override; 38 bool Flush() override; 39 bool Truncate(FX_FILESIZE szFile) override; 40 41 private: 42 int32_t m_nFD = -1; 43 }; 44 45 #endif // CORE_FXCRT_CFX_FILEACCESS_POSIX_H_ 46