1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/LibOVR/Src/Kernel/OVR_SysFile.cpp	Wed Jan 14 06:51:16 2015 +0200
     1.3 @@ -0,0 +1,138 @@
     1.4 +/**************************************************************************
     1.5 +
     1.6 +Filename    :   OVR_SysFile.cpp
     1.7 +Content     :   File wrapper class implementation (Win32)
     1.8 +
     1.9 +Created     :   April 5, 1999
    1.10 +Authors     :   Michael Antonov
    1.11 +
    1.12 +Copyright   :   Copyright 2014 Oculus VR, LLC All Rights reserved.
    1.13 +
    1.14 +Licensed under the Oculus VR Rift SDK License Version 3.2 (the "License"); 
    1.15 +you may not use the Oculus VR Rift SDK except in compliance with the License, 
    1.16 +which is provided at the time of installation or download, or which 
    1.17 +otherwise accompanies this software in either electronic or hard copy form.
    1.18 +
    1.19 +You may obtain a copy of the License at
    1.20 +
    1.21 +http://www.oculusvr.com/licenses/LICENSE-3.2 
    1.22 +
    1.23 +Unless required by applicable law or agreed to in writing, the Oculus VR SDK 
    1.24 +distributed under the License is distributed on an "AS IS" BASIS,
    1.25 +WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    1.26 +See the License for the specific language governing permissions and
    1.27 +limitations under the License.
    1.28 +
    1.29 +**************************************************************************/
    1.30 +
    1.31 +#define  GFILE_CXX
    1.32 +
    1.33 +// Standard C library (Captain Obvious guarantees!)
    1.34 +#include <stdio.h>
    1.35 +
    1.36 +#include "OVR_SysFile.h"
    1.37 +#include "OVR_Log.h"
    1.38 +
    1.39 +namespace OVR {
    1.40 +
    1.41 +// This is - a dummy file that fails on all calls.
    1.42 +
    1.43 +class UnopenedFile : public File
    1.44 +{
    1.45 +public:
    1.46 +    UnopenedFile()  { }
    1.47 +    ~UnopenedFile() { }
    1.48 +
    1.49 +    virtual const char* GetFilePath()               { return 0; }
    1.50 +
    1.51 +    // ** File Information
    1.52 +    virtual bool        IsValid()                   { return 0; }
    1.53 +    virtual bool        IsWritable()                { return 0; }
    1.54 +
    1.55 +    // Return position / file size
    1.56 +    virtual int         Tell()                      { return 0; }
    1.57 +    virtual int64_t     LTell()                     { return 0; }
    1.58 +    virtual int         GetLength()                 { return 0; }
    1.59 +    virtual int64_t     LGetLength()                { return 0; }
    1.60 +
    1.61 +//  virtual bool        Stat(FileStats *pfs)        { return 0; }
    1.62 +    virtual int         GetErrorCode()              { return Error_FileNotFound; }
    1.63 +
    1.64 +    // ** Stream implementation & I/O
    1.65 +    virtual int         Write(const uint8_t * /*pbuffer*/, int /*numBytes*/) { return -1; }
    1.66 +    virtual int         Read(uint8_t * /*pbuffer*/, int /*numBytes*/)         { return -1; }
    1.67 +    virtual int         SkipBytes(int /*numBytes*/)                          { return  0; }
    1.68 +    virtual int         BytesAvailable()                                     { return  0; }
    1.69 +    virtual bool        Flush()                                              { return  0; }
    1.70 +    virtual int         Seek(int /*offset*/, int /*origin*/)                 { return -1; }
    1.71 +    virtual int64_t     LSeek(int64_t /*offset*/, int /*origin*/)            { return -1; }
    1.72 +    
    1.73 +    virtual int         CopyFromStream(File * /*pstream*/, int /*byteSize*/)  { return -1; }
    1.74 +    virtual bool        Close()                                              { return  0; }
    1.75 +};
    1.76 +
    1.77 +
    1.78 +
    1.79 +// ***** System File
    1.80 +
    1.81 +// System file is created to access objects on file system directly
    1.82 +// This file can refer directly to path
    1.83 +
    1.84 +// ** Constructor
    1.85 +SysFile::SysFile() : DelegatedFile(0)
    1.86 +{
    1.87 +    pFile = *new UnopenedFile;
    1.88 +}
    1.89 +
    1.90 +Ptr<File> FileFILEOpen(const String& path, int flags, int mode);
    1.91 +
    1.92 +// Opens a file
    1.93 +SysFile::SysFile(const String& path, int flags, int mode) : DelegatedFile(0)
    1.94 +{
    1.95 +    Open(path, flags, mode);
    1.96 +}
    1.97 +
    1.98 +
    1.99 +// ** Open & management
   1.100 +// Will fail if file's already open
   1.101 +bool SysFile::Open(const String& path, int flags, int mode)
   1.102 +{
   1.103 +    pFile = FileFILEOpen(path, flags, mode);
   1.104 +    if ((!pFile) || (!pFile->IsValid()))
   1.105 +    {
   1.106 +        pFile = *new UnopenedFile;
   1.107 +        OVR_DEBUG_LOG(("Failed to open file: %s", path.ToCStr()));
   1.108 +        return 0;
   1.109 +    }
   1.110 +    //pFile = *OVR_NEW DelegatedFile(pFile); // MA Testing
   1.111 +    if (flags & Open_Buffered)
   1.112 +        pFile = *new BufferedFile(pFile);
   1.113 +    return 1;
   1.114 +}
   1.115 +
   1.116 +
   1.117 +// ** Overrides
   1.118 +
   1.119 +int SysFile::GetErrorCode()
   1.120 +{
   1.121 +    return pFile ? pFile->GetErrorCode() : Error_FileNotFound;
   1.122 +}
   1.123 +
   1.124 +
   1.125 +// Overrides to provide re-open support
   1.126 +bool SysFile::IsValid()
   1.127 +{
   1.128 +    return pFile && pFile->IsValid();
   1.129 +}
   1.130 +bool SysFile::Close()
   1.131 +{
   1.132 +    if (IsValid())
   1.133 +    {
   1.134 +        DelegatedFile::Close();
   1.135 +        pFile = *new UnopenedFile;
   1.136 +        return 1;
   1.137 +    }
   1.138 +    return 0;
   1.139 +}
   1.140 +
   1.141 +} // OVR