D:/opendownloadmanager/ODM-1.x/Include.Add/archive/FileIO.h Source File

00001 /*
00002   Free Download Manager Copyright (c) 2003-2007 FreeDownloadManager.ORG
00003 */    
00004 
00005 #ifndef __WINDOWS_FILEIO_H
00006 #define __WINDOWS_FILEIO_H
00007 
00008 #include "Types.h"
00009 
00010 namespace NWindows {
00011 namespace NFile {
00012 namespace NIO {
00013 
00014 struct CByHandleFileInfo
00015 { 
00016   DWORD    Attributes; 
00017   FILETIME CreationTime; 
00018   FILETIME LastAccessTime; 
00019   FILETIME LastWriteTime; 
00020   DWORD    VolumeSerialNumber; 
00021   UInt64   Size;
00022   DWORD    NumberOfLinks; 
00023   UInt64   FileIndex; 
00024 };
00025 
00026 class CFileBase
00027 {
00028 protected:
00029   bool _fileIsOpen;
00030   HANDLE _handle;
00031   bool Create(LPCTSTR fileName, DWORD desiredAccess,
00032       DWORD shareMode, DWORD creationDisposition,  DWORD flagsAndAttributes);
00033   #ifndef _UNICODE
00034   bool Create(LPCWSTR fileName, DWORD desiredAccess,
00035       DWORD shareMode, DWORD creationDisposition,  DWORD flagsAndAttributes);
00036   #endif
00037 
00038 public:
00039   CFileBase(): _fileIsOpen(false){};
00040   virtual ~CFileBase();
00041 
00042   virtual bool Close();
00043 
00044   bool GetPosition(UInt64 &position) const;
00045   bool GetLength(UInt64 &length) const;
00046 
00047   bool Seek(Int64 distanceToMove, DWORD moveMethod, UInt64 &newPosition) const;
00048   bool Seek(UInt64 position, UInt64 &newPosition); 
00049   bool SeekToBegin(); 
00050   bool SeekToEnd(UInt64 &newPosition); 
00051   
00052   bool GetFileInformation(CByHandleFileInfo &fileInfo) const;
00053 };
00054 
00055 class CInFile: public CFileBase
00056 {
00057 public:
00058   bool Open(LPCTSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
00059   bool Open(LPCTSTR fileName);
00060   #ifndef _UNICODE
00061   bool Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
00062   bool Open(LPCWSTR fileName);
00063   #endif
00064   bool ReadPart(void *data, UInt32 size, UInt32 &processedSize);
00065   bool Read(void *data, UInt32 size, UInt32 &processedSize);
00066 };
00067 
00068 class COutFile: public CFileBase
00069 {
00070   
00071 public:
00072   
00073   bool Open(LPCTSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
00074   bool Open(LPCTSTR fileName, DWORD creationDisposition);
00075   bool Create(LPCTSTR fileName, bool createAlways);
00076 
00077   #ifndef _UNICODE
00078   bool Open(LPCWSTR fileName, DWORD shareMode, DWORD creationDisposition, DWORD flagsAndAttributes);
00079   bool Open(LPCWSTR fileName, DWORD creationDisposition);
00080   bool Create(LPCWSTR fileName, bool createAlways);
00081   #endif
00082 
00083   
00084 
00085   bool SetTime(const FILETIME *creationTime, const FILETIME *lastAccessTime, const FILETIME *lastWriteTime);
00086   bool SetLastWriteTime(const FILETIME *lastWriteTime);
00087   bool WritePart(const void *data, UInt32 size, UInt32 &processedSize);
00088   bool Write(const void *data, UInt32 size, UInt32 &processedSize);
00089   bool SetEndOfFile();
00090   bool SetLength(UInt64 length);
00091 };
00092 
00093 }}}
00094 
00095 #endif