ut_FileStream.h

#ifndef NW4R_UT_FILE_STREAM_H
#define NW4R_UT_FILE_STREAM_H
#include <nw4r/types_nw4r.h>
 
#include <nw4r/ut/ut_IOStream.h>
 
namespace nw4r {
namespace ut {
 
class FileStream : public IOStream {
public:
    NW4R_UT_RTTI_DECL(FileStream);
 
    enum SeekOrigin { SEEK_BEG, SEEK_CUR, SEEK_END };
 
public:
    FileStream() {}
    virtual ~FileStream() {} // at 0xC
 
    virtual ulong GetSize() const = 0; // at 0x40
 
    virtual void Seek(s32 offset, ulong origin); // at 0x44
 
    virtual void Cancel(); // at 0x48
    virtual bool CancelAsync(StreamCallback pCallback,
                             void* pCallbackArg); // at 0x4C
 
    virtual bool CanSeek() const = 0;   // at 0x50
    virtual bool CanCancel() const = 0; // at 0x54
 
    virtual ulong Tell() const = 0; // at 0x58
 
protected:
    class FilePosition {
    public:
        FilePosition() : mFileSize(0), mPosition(0) {}
 
        ulong GetFileSize() const {
            return mFileSize;
        }
        void SetFileSize(ulong size) {
            mFileSize = size;
        }
 
        ulong Tell() const {
            return mPosition;
        }
 
        ulong Skip(s32 offset);
        ulong Append(s32 offset);
        void Seek(s32 offset, ulong origin);
 
    private:
        ulong mFileSize; // at 0x0
        ulong mPosition; // at 0x4
    };
};
 
} // namespace ut
} // namespace nw4r
 
#endif