diff options
Diffstat (limited to 'LibOVR/Src/Kernel/OVR_FileFILE.cpp')
| -rw-r--r-- | LibOVR/Src/Kernel/OVR_FileFILE.cpp | 1166 |
1 files changed, 583 insertions, 583 deletions
diff --git a/LibOVR/Src/Kernel/OVR_FileFILE.cpp b/LibOVR/Src/Kernel/OVR_FileFILE.cpp index 4ee32b6..dd77fde 100644 --- a/LibOVR/Src/Kernel/OVR_FileFILE.cpp +++ b/LibOVR/Src/Kernel/OVR_FileFILE.cpp @@ -1,583 +1,583 @@ -/**************************************************************************
-
-Filename : OVR_FileFILE.cpp
-Content : File wrapper class implementation (Win32)
-
-Created : April 5, 1999
-Authors : Michael Antonov
-
-Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved.
-
-Use of this software is subject to the terms of the Oculus license
-agreement provided at the time of installation or download, or which
-otherwise accompanies this software in either electronic or hard copy form.
-
-**************************************************************************/
-
-#define GFILE_CXX
-
-#include "OVR_Types.h"
-#include "OVR_Log.h"
-
-// Standard C library (Captain Obvious guarantees!)
-#include <stdio.h>
-#ifndef OVR_OS_WINCE
-#include <sys/stat.h>
-#endif
-
-#include "OVR_SysFile.h"
-
-#ifndef OVR_OS_WINCE
-#include <errno.h>
-#endif
-
-namespace OVR {
-
-// ***** File interface
-
-// ***** FILEFile - C streams file
-
-static int SFerror ()
-{
- if (errno == ENOENT)
- return FileConstants::Error_FileNotFound;
- else if (errno == EACCES || errno == EPERM)
- return FileConstants::Error_Access;
- else if (errno == ENOSPC)
- return FileConstants::Error_DiskFull;
- else
- return FileConstants::Error_IOError;
-};
-
-#ifdef OVR_OS_WIN32
-#include "windows.h"
-// A simple helper class to disable/enable system error mode, if necessary
-// Disabling happens conditionally only if a drive name is involved
-class SysErrorModeDisabler
-{
- BOOL Disabled;
- UINT OldMode;
-public:
- SysErrorModeDisabler(const char* pfileName)
- {
- if (pfileName && (pfileName[0]!=0) && pfileName[1]==':')
- {
- Disabled = 1;
- OldMode = ::SetErrorMode(SEM_FAILCRITICALERRORS);
- }
- else
- Disabled = 0;
- }
-
- ~SysErrorModeDisabler()
- {
- if (Disabled) ::SetErrorMode(OldMode);
- }
-};
-#else
-class SysErrorModeDisabler
-{
-public:
- SysErrorModeDisabler(const char* pfileName) { }
-};
-#endif // OVR_OS_WIN32
-
-
-// This macro enables verification of I/O results after seeks against a pre-loaded
-// full file buffer copy. This is generally not necessary, but can been used to debug
-// memory corruptions; we've seen this fail due to EAX2/DirectSound corrupting memory
-// under FMOD with XP64 (32-bit) and Realtek HA Audio driver.
-//#define GFILE_VERIFY_SEEK_ERRORS
-
-
-// This is the simplest possible file implementation, it wraps around the descriptor
-// This file is delegated to by SysFile.
-
-class FILEFile : public File
-{
-protected:
-
- // Allocated filename
- String FileName;
-
- // File handle & open mode
- bool Opened;
- FILE* fs;
- int OpenFlags;
- // Error code for last request
- int ErrorCode;
-
- int LastOp;
-
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- UByte* pFileTestBuffer;
- unsigned FileTestLength;
- unsigned TestPos; // File pointer position during tests.
-#endif
-
-public:
-
- FILEFile()
- {
- Opened = 0; FileName = "";
-
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- pFileTestBuffer =0;
- FileTestLength =0;
- TestPos =0;
-#endif
- }
- // Initialize file by opening it
- FILEFile(const String& fileName, int flags, int Mode);
- // The 'pfileName' should be encoded as UTF-8 to support international file names.
- FILEFile(const char* pfileName, int flags, int Mode);
-
- ~FILEFile()
- {
- if (Opened)
- Close();
- }
-
- virtual const char* GetFilePath();
-
- // ** File Information
- virtual bool IsValid();
- virtual bool IsWritable();
-
- // Return position / file size
- virtual int Tell();
- virtual SInt64 LTell();
- virtual int GetLength();
- virtual SInt64 LGetLength();
-
-// virtual bool Stat(FileStats *pfs);
- virtual int GetErrorCode();
-
- // ** Stream implementation & I/O
- virtual int Write(const UByte *pbuffer, int numBytes);
- virtual int Read(UByte *pbuffer, int numBytes);
- virtual int SkipBytes(int numBytes);
- virtual int BytesAvailable();
- virtual bool Flush();
- virtual int Seek(int offset, int origin);
- virtual SInt64 LSeek(SInt64 offset, int origin);
-
- virtual int CopyFromStream(File *pStream, int byteSize);
- virtual bool Close();
-private:
- void init();
-};
-
-
-// Initialize file by opening it
-FILEFile::FILEFile(const String& fileName, int flags, int mode)
- : FileName(fileName), OpenFlags(flags)
-{
- OVR_UNUSED(mode);
- init();
-}
-
-// The 'pfileName' should be encoded as UTF-8 to support international file names.
-FILEFile::FILEFile(const char* pfileName, int flags, int mode)
- : FileName(pfileName), OpenFlags(flags)
-{
- OVR_UNUSED(mode);
- init();
-}
-
-void FILEFile::init()
-{
- // Open mode for file's open
- const char *omode = "rb";
-
- if (OpenFlags & Open_Truncate)
- {
- if (OpenFlags & Open_Read)
- omode = "w+b";
- else
- omode = "wb";
- }
- else if (OpenFlags & Open_Create)
- {
- if (OpenFlags & Open_Read)
- omode = "a+b";
- else
- omode = "ab";
- }
- else if (OpenFlags & Open_Write)
- omode = "r+b";
-
-#ifdef OVR_OS_WIN32
- SysErrorModeDisabler disabler(FileName.ToCStr());
-#endif
-
-#if defined(OVR_CC_MSVC) && (OVR_CC_MSVC >= 1400)
- wchar_t womode[16];
- wchar_t *pwFileName = (wchar_t*)OVR_ALLOC((UTF8Util::GetLength(FileName.ToCStr())+1) * sizeof(wchar_t));
- UTF8Util::DecodeString(pwFileName, FileName.ToCStr());
- OVR_ASSERT(strlen(omode) < sizeof(womode)/sizeof(womode[0]));
- UTF8Util::DecodeString(womode, omode);
- _wfopen_s(&fs, pwFileName, womode);
- OVR_FREE(pwFileName);
-#else
- fs = fopen(FileName.ToCStr(), omode);
-#endif
- if (fs)
- rewind (fs);
- Opened = (fs != NULL);
- // Set error code
- if (!Opened)
- ErrorCode = SFerror();
- else
- {
- // If we are testing file seek correctness, pre-load the entire file so
- // that we can do comparison tests later.
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- TestPos = 0;
- fseek(fs, 0, SEEK_END);
- FileTestLength = ftell(fs);
- fseek(fs, 0, SEEK_SET);
- pFileTestBuffer = (UByte*)OVR_ALLOC(FileTestLength);
- if (pFileTestBuffer)
- {
- OVR_ASSERT(FileTestLength == (unsigned)Read(pFileTestBuffer, FileTestLength));
- Seek(0, Seek_Set);
- }
-#endif
-
- ErrorCode = 0;
- }
- LastOp = 0;
-}
-
-
-const char* FILEFile::GetFilePath()
-{
- return FileName.ToCStr();
-}
-
-
-// ** File Information
-bool FILEFile::IsValid()
-{
- return Opened;
-}
-bool FILEFile::IsWritable()
-{
- return IsValid() && (OpenFlags&Open_Write);
-}
-/*
-bool FILEFile::IsRecoverable()
-{
- return IsValid() && ((OpenFlags&OVR_FO_SAFETRUNC) == OVR_FO_SAFETRUNC);
-}
-*/
-
-// Return position / file size
-int FILEFile::Tell()
-{
- int pos = (int)ftell (fs);
- if (pos < 0)
- ErrorCode = SFerror();
- return pos;
-}
-
-SInt64 FILEFile::LTell()
-{
- SInt64 pos = ftell(fs);
- if (pos < 0)
- ErrorCode = SFerror();
- return pos;
-}
-
-int FILEFile::GetLength()
-{
- int pos = Tell();
- if (pos >= 0)
- {
- Seek (0, Seek_End);
- int size = Tell();
- Seek (pos, Seek_Set);
- return size;
- }
- return -1;
-}
-SInt64 FILEFile::LGetLength()
-{
- SInt64 pos = LTell();
- if (pos >= 0)
- {
- LSeek (0, Seek_End);
- SInt64 size = LTell();
- LSeek (pos, Seek_Set);
- return size;
- }
- return -1;
-}
-
-int FILEFile::GetErrorCode()
-{
- return ErrorCode;
-}
-
-// ** Stream implementation & I/O
-int FILEFile::Write(const UByte *pbuffer, int numBytes)
-{
- if (LastOp && LastOp != Open_Write)
- fflush(fs);
- LastOp = Open_Write;
- int written = (int) fwrite(pbuffer, 1, numBytes, fs);
- if (written < numBytes)
- ErrorCode = SFerror();
-
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- if (written > 0)
- TestPos += written;
-#endif
-
- return written;
-}
-
-int FILEFile::Read(UByte *pbuffer, int numBytes)
-{
- if (LastOp && LastOp != Open_Read)
- fflush(fs);
- LastOp = Open_Read;
- int read = (int) fread(pbuffer, 1, numBytes, fs);
- if (read < numBytes)
- ErrorCode = SFerror();
-
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- if (read > 0)
- {
- // Read-in data must match our pre-loaded buffer data!
- UByte* pcompareBuffer = pFileTestBuffer + TestPos;
- for (int i=0; i< read; i++)
- {
- OVR_ASSERT(pcompareBuffer[i] == pbuffer[i]);
- }
-
- //OVR_ASSERT(!memcmp(pFileTestBuffer + TestPos, pbuffer, read));
- TestPos += read;
- OVR_ASSERT(ftell(fs) == (int)TestPos);
- }
-#endif
-
- return read;
-}
-
-// Seeks ahead to skip bytes
-int FILEFile::SkipBytes(int numBytes)
-{
- SInt64 pos = LTell();
- SInt64 newPos = LSeek(numBytes, Seek_Cur);
-
- // Return -1 for major error
- if ((pos==-1) || (newPos==-1))
- {
- return -1;
- }
- //ErrorCode = ((NewPos-Pos)<numBytes) ? errno : 0;
-
- return int (newPos-(int)pos);
-}
-
-// Return # of bytes till EOF
-int FILEFile::BytesAvailable()
-{
- SInt64 pos = LTell();
- SInt64 endPos = LGetLength();
-
- // Return -1 for major error
- if ((pos==-1) || (endPos==-1))
- {
- ErrorCode = SFerror();
- return 0;
- }
- else
- ErrorCode = 0;
-
- return int (endPos-(int)pos);
-}
-
-// Flush file contents
-bool FILEFile::Flush()
-{
- return !fflush(fs);
-}
-
-int FILEFile::Seek(int offset, int origin)
-{
- int newOrigin = 0;
- switch(origin)
- {
- case Seek_Set: newOrigin = SEEK_SET; break;
- case Seek_Cur: newOrigin = SEEK_CUR; break;
- case Seek_End: newOrigin = SEEK_END; break;
- }
-
- if (newOrigin == SEEK_SET && offset == Tell())
- return Tell();
-
- if (fseek (fs, offset, newOrigin))
- {
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- OVR_ASSERT(0);
-#endif
- return -1;
- }
-
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- // Track file position after seeks for read verification later.
- switch(origin)
- {
- case Seek_Set: TestPos = offset; break;
- case Seek_Cur: TestPos += offset; break;
- case Seek_End: TestPos = FileTestLength + offset; break;
- }
- OVR_ASSERT((int)TestPos == Tell());
-#endif
-
- return (int)Tell();
-}
-
-SInt64 FILEFile::LSeek(SInt64 offset, int origin)
-{
- return Seek((int)offset,origin);
-}
-
-int FILEFile::CopyFromStream(File *pstream, int byteSize)
-{
- UByte buff[0x4000];
- int count = 0;
- int szRequest, szRead, szWritten;
-
- while (byteSize)
- {
- szRequest = (byteSize > int(sizeof(buff))) ? int(sizeof(buff)) : byteSize;
-
- szRead = pstream->Read(buff, szRequest);
- szWritten = 0;
- if (szRead > 0)
- szWritten = Write(buff, szRead);
-
- count += szWritten;
- byteSize -= szWritten;
- if (szWritten < szRequest)
- break;
- }
- return count;
-}
-
-
-bool FILEFile::Close()
-{
-#ifdef OVR_FILE_VERIFY_SEEK_ERRORS
- if (pFileTestBuffer)
- {
- OVR_FREE(pFileTestBuffer);
- pFileTestBuffer = 0;
- FileTestLength = 0;
- }
-#endif
-
- bool closeRet = !fclose(fs);
-
- if (!closeRet)
- {
- ErrorCode = SFerror();
- return 0;
- }
- else
- {
- Opened = 0;
- fs = 0;
- ErrorCode = 0;
- }
-
- // Handle safe truncate
- /*
- if ((OpenFlags & OVR_FO_SAFETRUNC) == OVR_FO_SAFETRUNC)
- {
- // Delete original file (if it existed)
- DWORD oldAttributes = FileUtilWin32::GetFileAttributes(FileName);
- if (oldAttributes!=0xFFFFFFFF)
- if (!FileUtilWin32::DeleteFile(FileName))
- {
- // Try to remove the readonly attribute
- FileUtilWin32::SetFileAttributes(FileName, oldAttributes & (~FILE_ATTRIBUTE_READONLY) );
- // And delete the file again
- if (!FileUtilWin32::DeleteFile(FileName))
- return 0;
- }
-
- // Rename temp file to real filename
- if (!FileUtilWin32::MoveFile(TempName, FileName))
- {
- //ErrorCode = errno;
- return 0;
- }
- }
- */
- return 1;
-}
-
-/*
-bool FILEFile::CloseCancel()
-{
- bool closeRet = (bool)::CloseHandle(fd);
-
- if (!closeRet)
- {
- //ErrorCode = errno;
- return 0;
- }
- else
- {
- Opened = 0;
- fd = INVALID_HANDLE_VALUE;
- ErrorCode = 0;
- }
-
- // Handle safe truncate (delete tmp file, leave original unchanged)
- if ((OpenFlags&OVR_FO_SAFETRUNC) == OVR_FO_SAFETRUNC)
- if (!FileUtilWin32::DeleteFile(TempName))
- {
- //ErrorCode = errno;
- return 0;
- }
- return 1;
-}
-*/
-
-File *FileFILEOpen(const String& path, int flags, int mode)
-{
- return new FILEFile(path, flags, mode);
-}
-
-// Helper function: obtain file information time.
-bool SysFile::GetFileStat(FileStat* pfileStat, const String& path)
-{
-#if defined(OVR_OS_WIN32)
- // 64-bit implementation on Windows.
- struct __stat64 fileStat;
- // Stat returns 0 for success.
- wchar_t *pwpath = (wchar_t*)OVR_ALLOC((UTF8Util::GetLength(path.ToCStr())+1)*sizeof(wchar_t));
- UTF8Util::DecodeString(pwpath, path.ToCStr());
-
- int ret = _wstat64(pwpath, &fileStat);
- OVR_FREE(pwpath);
- if (ret) return false;
-#else
- struct stat fileStat;
- // Stat returns 0 for success.
- if (stat(path, &fileStat) != 0)
- return false;
-#endif
- pfileStat->AccessTime = fileStat.st_atime;
- pfileStat->ModifyTime = fileStat.st_mtime;
- pfileStat->FileSize = fileStat.st_size;
- return true;
-}
-
-} // Scaleform
+/************************************************************************** + +Filename : OVR_FileFILE.cpp +Content : File wrapper class implementation (Win32) + +Created : April 5, 1999 +Authors : Michael Antonov + +Copyright : Copyright 2012 Oculus VR, Inc. All Rights reserved. + +Use of this software is subject to the terms of the Oculus license +agreement provided at the time of installation or download, or which +otherwise accompanies this software in either electronic or hard copy form. + +**************************************************************************/ + +#define GFILE_CXX + +#include "OVR_Types.h" +#include "OVR_Log.h" + +// Standard C library (Captain Obvious guarantees!) +#include <stdio.h> +#ifndef OVR_OS_WINCE +#include <sys/stat.h> +#endif + +#include "OVR_SysFile.h" + +#ifndef OVR_OS_WINCE +#include <errno.h> +#endif + +namespace OVR { + +// ***** File interface + +// ***** FILEFile - C streams file + +static int SFerror () +{ + if (errno == ENOENT) + return FileConstants::Error_FileNotFound; + else if (errno == EACCES || errno == EPERM) + return FileConstants::Error_Access; + else if (errno == ENOSPC) + return FileConstants::Error_DiskFull; + else + return FileConstants::Error_IOError; +}; + +#ifdef OVR_OS_WIN32 +#include "windows.h" +// A simple helper class to disable/enable system error mode, if necessary +// Disabling happens conditionally only if a drive name is involved +class SysErrorModeDisabler +{ + BOOL Disabled; + UINT OldMode; +public: + SysErrorModeDisabler(const char* pfileName) + { + if (pfileName && (pfileName[0]!=0) && pfileName[1]==':') + { + Disabled = 1; + OldMode = ::SetErrorMode(SEM_FAILCRITICALERRORS); + } + else + Disabled = 0; + } + + ~SysErrorModeDisabler() + { + if (Disabled) ::SetErrorMode(OldMode); + } +}; +#else +class SysErrorModeDisabler +{ +public: + SysErrorModeDisabler(const char* pfileName) { } +}; +#endif // OVR_OS_WIN32 + + +// This macro enables verification of I/O results after seeks against a pre-loaded +// full file buffer copy. This is generally not necessary, but can been used to debug +// memory corruptions; we've seen this fail due to EAX2/DirectSound corrupting memory +// under FMOD with XP64 (32-bit) and Realtek HA Audio driver. +//#define GFILE_VERIFY_SEEK_ERRORS + + +// This is the simplest possible file implementation, it wraps around the descriptor +// This file is delegated to by SysFile. + +class FILEFile : public File +{ +protected: + + // Allocated filename + String FileName; + + // File handle & open mode + bool Opened; + FILE* fs; + int OpenFlags; + // Error code for last request + int ErrorCode; + + int LastOp; + +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + UByte* pFileTestBuffer; + unsigned FileTestLength; + unsigned TestPos; // File pointer position during tests. +#endif + +public: + + FILEFile() + { + Opened = 0; FileName = ""; + +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + pFileTestBuffer =0; + FileTestLength =0; + TestPos =0; +#endif + } + // Initialize file by opening it + FILEFile(const String& fileName, int flags, int Mode); + // The 'pfileName' should be encoded as UTF-8 to support international file names. + FILEFile(const char* pfileName, int flags, int Mode); + + ~FILEFile() + { + if (Opened) + Close(); + } + + virtual const char* GetFilePath(); + + // ** File Information + virtual bool IsValid(); + virtual bool IsWritable(); + + // Return position / file size + virtual int Tell(); + virtual SInt64 LTell(); + virtual int GetLength(); + virtual SInt64 LGetLength(); + +// virtual bool Stat(FileStats *pfs); + virtual int GetErrorCode(); + + // ** Stream implementation & I/O + virtual int Write(const UByte *pbuffer, int numBytes); + virtual int Read(UByte *pbuffer, int numBytes); + virtual int SkipBytes(int numBytes); + virtual int BytesAvailable(); + virtual bool Flush(); + virtual int Seek(int offset, int origin); + virtual SInt64 LSeek(SInt64 offset, int origin); + + virtual int CopyFromStream(File *pStream, int byteSize); + virtual bool Close(); +private: + void init(); +}; + + +// Initialize file by opening it +FILEFile::FILEFile(const String& fileName, int flags, int mode) + : FileName(fileName), OpenFlags(flags) +{ + OVR_UNUSED(mode); + init(); +} + +// The 'pfileName' should be encoded as UTF-8 to support international file names. +FILEFile::FILEFile(const char* pfileName, int flags, int mode) + : FileName(pfileName), OpenFlags(flags) +{ + OVR_UNUSED(mode); + init(); +} + +void FILEFile::init() +{ + // Open mode for file's open + const char *omode = "rb"; + + if (OpenFlags & Open_Truncate) + { + if (OpenFlags & Open_Read) + omode = "w+b"; + else + omode = "wb"; + } + else if (OpenFlags & Open_Create) + { + if (OpenFlags & Open_Read) + omode = "a+b"; + else + omode = "ab"; + } + else if (OpenFlags & Open_Write) + omode = "r+b"; + +#ifdef OVR_OS_WIN32 + SysErrorModeDisabler disabler(FileName.ToCStr()); +#endif + +#if defined(OVR_CC_MSVC) && (OVR_CC_MSVC >= 1400) + wchar_t womode[16]; + wchar_t *pwFileName = (wchar_t*)OVR_ALLOC((UTF8Util::GetLength(FileName.ToCStr())+1) * sizeof(wchar_t)); + UTF8Util::DecodeString(pwFileName, FileName.ToCStr()); + OVR_ASSERT(strlen(omode) < sizeof(womode)/sizeof(womode[0])); + UTF8Util::DecodeString(womode, omode); + _wfopen_s(&fs, pwFileName, womode); + OVR_FREE(pwFileName); +#else + fs = fopen(FileName.ToCStr(), omode); +#endif + if (fs) + rewind (fs); + Opened = (fs != NULL); + // Set error code + if (!Opened) + ErrorCode = SFerror(); + else + { + // If we are testing file seek correctness, pre-load the entire file so + // that we can do comparison tests later. +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + TestPos = 0; + fseek(fs, 0, SEEK_END); + FileTestLength = ftell(fs); + fseek(fs, 0, SEEK_SET); + pFileTestBuffer = (UByte*)OVR_ALLOC(FileTestLength); + if (pFileTestBuffer) + { + OVR_ASSERT(FileTestLength == (unsigned)Read(pFileTestBuffer, FileTestLength)); + Seek(0, Seek_Set); + } +#endif + + ErrorCode = 0; + } + LastOp = 0; +} + + +const char* FILEFile::GetFilePath() +{ + return FileName.ToCStr(); +} + + +// ** File Information +bool FILEFile::IsValid() +{ + return Opened; +} +bool FILEFile::IsWritable() +{ + return IsValid() && (OpenFlags&Open_Write); +} +/* +bool FILEFile::IsRecoverable() +{ + return IsValid() && ((OpenFlags&OVR_FO_SAFETRUNC) == OVR_FO_SAFETRUNC); +} +*/ + +// Return position / file size +int FILEFile::Tell() +{ + int pos = (int)ftell (fs); + if (pos < 0) + ErrorCode = SFerror(); + return pos; +} + +SInt64 FILEFile::LTell() +{ + SInt64 pos = ftell(fs); + if (pos < 0) + ErrorCode = SFerror(); + return pos; +} + +int FILEFile::GetLength() +{ + int pos = Tell(); + if (pos >= 0) + { + Seek (0, Seek_End); + int size = Tell(); + Seek (pos, Seek_Set); + return size; + } + return -1; +} +SInt64 FILEFile::LGetLength() +{ + SInt64 pos = LTell(); + if (pos >= 0) + { + LSeek (0, Seek_End); + SInt64 size = LTell(); + LSeek (pos, Seek_Set); + return size; + } + return -1; +} + +int FILEFile::GetErrorCode() +{ + return ErrorCode; +} + +// ** Stream implementation & I/O +int FILEFile::Write(const UByte *pbuffer, int numBytes) +{ + if (LastOp && LastOp != Open_Write) + fflush(fs); + LastOp = Open_Write; + int written = (int) fwrite(pbuffer, 1, numBytes, fs); + if (written < numBytes) + ErrorCode = SFerror(); + +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + if (written > 0) + TestPos += written; +#endif + + return written; +} + +int FILEFile::Read(UByte *pbuffer, int numBytes) +{ + if (LastOp && LastOp != Open_Read) + fflush(fs); + LastOp = Open_Read; + int read = (int) fread(pbuffer, 1, numBytes, fs); + if (read < numBytes) + ErrorCode = SFerror(); + +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + if (read > 0) + { + // Read-in data must match our pre-loaded buffer data! + UByte* pcompareBuffer = pFileTestBuffer + TestPos; + for (int i=0; i< read; i++) + { + OVR_ASSERT(pcompareBuffer[i] == pbuffer[i]); + } + + //OVR_ASSERT(!memcmp(pFileTestBuffer + TestPos, pbuffer, read)); + TestPos += read; + OVR_ASSERT(ftell(fs) == (int)TestPos); + } +#endif + + return read; +} + +// Seeks ahead to skip bytes +int FILEFile::SkipBytes(int numBytes) +{ + SInt64 pos = LTell(); + SInt64 newPos = LSeek(numBytes, Seek_Cur); + + // Return -1 for major error + if ((pos==-1) || (newPos==-1)) + { + return -1; + } + //ErrorCode = ((NewPos-Pos)<numBytes) ? errno : 0; + + return int (newPos-(int)pos); +} + +// Return # of bytes till EOF +int FILEFile::BytesAvailable() +{ + SInt64 pos = LTell(); + SInt64 endPos = LGetLength(); + + // Return -1 for major error + if ((pos==-1) || (endPos==-1)) + { + ErrorCode = SFerror(); + return 0; + } + else + ErrorCode = 0; + + return int (endPos-(int)pos); +} + +// Flush file contents +bool FILEFile::Flush() +{ + return !fflush(fs); +} + +int FILEFile::Seek(int offset, int origin) +{ + int newOrigin = 0; + switch(origin) + { + case Seek_Set: newOrigin = SEEK_SET; break; + case Seek_Cur: newOrigin = SEEK_CUR; break; + case Seek_End: newOrigin = SEEK_END; break; + } + + if (newOrigin == SEEK_SET && offset == Tell()) + return Tell(); + + if (fseek (fs, offset, newOrigin)) + { +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + OVR_ASSERT(0); +#endif + return -1; + } + +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + // Track file position after seeks for read verification later. + switch(origin) + { + case Seek_Set: TestPos = offset; break; + case Seek_Cur: TestPos += offset; break; + case Seek_End: TestPos = FileTestLength + offset; break; + } + OVR_ASSERT((int)TestPos == Tell()); +#endif + + return (int)Tell(); +} + +SInt64 FILEFile::LSeek(SInt64 offset, int origin) +{ + return Seek((int)offset,origin); +} + +int FILEFile::CopyFromStream(File *pstream, int byteSize) +{ + UByte buff[0x4000]; + int count = 0; + int szRequest, szRead, szWritten; + + while (byteSize) + { + szRequest = (byteSize > int(sizeof(buff))) ? int(sizeof(buff)) : byteSize; + + szRead = pstream->Read(buff, szRequest); + szWritten = 0; + if (szRead > 0) + szWritten = Write(buff, szRead); + + count += szWritten; + byteSize -= szWritten; + if (szWritten < szRequest) + break; + } + return count; +} + + +bool FILEFile::Close() +{ +#ifdef OVR_FILE_VERIFY_SEEK_ERRORS + if (pFileTestBuffer) + { + OVR_FREE(pFileTestBuffer); + pFileTestBuffer = 0; + FileTestLength = 0; + } +#endif + + bool closeRet = !fclose(fs); + + if (!closeRet) + { + ErrorCode = SFerror(); + return 0; + } + else + { + Opened = 0; + fs = 0; + ErrorCode = 0; + } + + // Handle safe truncate + /* + if ((OpenFlags & OVR_FO_SAFETRUNC) == OVR_FO_SAFETRUNC) + { + // Delete original file (if it existed) + DWORD oldAttributes = FileUtilWin32::GetFileAttributes(FileName); + if (oldAttributes!=0xFFFFFFFF) + if (!FileUtilWin32::DeleteFile(FileName)) + { + // Try to remove the readonly attribute + FileUtilWin32::SetFileAttributes(FileName, oldAttributes & (~FILE_ATTRIBUTE_READONLY) ); + // And delete the file again + if (!FileUtilWin32::DeleteFile(FileName)) + return 0; + } + + // Rename temp file to real filename + if (!FileUtilWin32::MoveFile(TempName, FileName)) + { + //ErrorCode = errno; + return 0; + } + } + */ + return 1; +} + +/* +bool FILEFile::CloseCancel() +{ + bool closeRet = (bool)::CloseHandle(fd); + + if (!closeRet) + { + //ErrorCode = errno; + return 0; + } + else + { + Opened = 0; + fd = INVALID_HANDLE_VALUE; + ErrorCode = 0; + } + + // Handle safe truncate (delete tmp file, leave original unchanged) + if ((OpenFlags&OVR_FO_SAFETRUNC) == OVR_FO_SAFETRUNC) + if (!FileUtilWin32::DeleteFile(TempName)) + { + //ErrorCode = errno; + return 0; + } + return 1; +} +*/ + +File *FileFILEOpen(const String& path, int flags, int mode) +{ + return new FILEFile(path, flags, mode); +} + +// Helper function: obtain file information time. +bool SysFile::GetFileStat(FileStat* pfileStat, const String& path) +{ +#if defined(OVR_OS_WIN32) + // 64-bit implementation on Windows. + struct __stat64 fileStat; + // Stat returns 0 for success. + wchar_t *pwpath = (wchar_t*)OVR_ALLOC((UTF8Util::GetLength(path.ToCStr())+1)*sizeof(wchar_t)); + UTF8Util::DecodeString(pwpath, path.ToCStr()); + + int ret = _wstat64(pwpath, &fileStat); + OVR_FREE(pwpath); + if (ret) return false; +#else + struct stat fileStat; + // Stat returns 0 for success. + if (stat(path, &fileStat) != 0) + return false; +#endif + pfileStat->AccessTime = fileStat.st_atime; + pfileStat->ModifyTime = fileStat.st_mtime; + pfileStat->FileSize = fileStat.st_size; + return true; +} + +} // Scaleform |