示例#1
0
        ///<summary>
        /// Load the buffer with a file
        ///</summary>
        public void Load(string filename)
        {
            if (reader != null)
            {
                reader.Close();
            }

            OperatingSystem os  = Environment.OSVersion;
            PlatformID      pid = os.Platform;

            if (pid == PlatformID.Unix)
            {
                UnixFileInfo fsInfo = new UnixFileInfo(filename);
                if (!fsInfo.Exists)
                {
                    throw new FileNotFoundException(fsInfo.FullName);
                }

                // get the size of the file or device
                if (fsInfo.IsRegularFile)
                {
                    FileLength  = fsInfo.Length;
                    isResizable = true;
                }
                else if (fsInfo.IsBlockDevice)
                {
                    UnixStream unixStream = fsInfo.OpenRead();
                    ioctl(unixStream.Handle, BLKGETSIZE64, ref FileLength);
                    unixStream.Close();
                    isResizable = false;
                }
                else
                {
                    throw new NotSupportedException("File object isn't a regular or block device.");
                }
            }

            Stream stream = new FileStream(filename, FileMode.Open, FileAccess.Read);

            if (stream.CanSeek == false)
            {
                throw new NotSupportedException("File object doesn't support seeking.");
            }

            if (pid != PlatformID.Unix)
            {
                FileLength = stream.Seek(0, SeekOrigin.End);
                stream.Seek(0, SeekOrigin.Begin);
                isResizable = false;
            }
            reader = new BinaryReader(stream);

            winOccupied = reader.Read(window, 0, window.Length);
            winOffset   = 0;
        }
示例#2
0
        ///<summary>
        /// Load the buffer with a file
        ///</summary>
        public void Load(string filename)
        {
            if (reader != null)
            {
                reader.Close();
            }

#if ENABLE_UNIX_SPECIFIC
            UnixFileInfo fsInfo = new UnixFileInfo(filename);
            if (!fsInfo.Exists)
            {
                throw new FileNotFoundException(fsInfo.FullName);
            }

            // get the size of the file or device
            if (fsInfo.IsRegularFile)
            {
                FileLength  = fsInfo.Length;
                isResizable = true;
            }
            else if (fsInfo.IsBlockDevice)
            {
                UnixStream unixStream = fsInfo.OpenRead();
                ioctl(unixStream.Handle, BLKGETSIZE64, ref FileLength);
                unixStream.Close();
                isResizable = false;
            }
            else
            {
                throw new NotSupportedException("File object isn't a regular or block device.");
            }
#endif

            Stream stream = new FileStream(filename, FileMode.Open, FileAccess.Read,
                                           FileShare.ReadWrite);

            if (stream.CanSeek == false)
            {
                throw new NotSupportedException("File object doesn't support seeking.");
            }

#if !ENABLE_UNIX_SPECIFIC
            FileLength = stream.Seek(0, SeekOrigin.End);
            stream.Seek(0, SeekOrigin.Begin);
            isResizable = false;
#endif
            reader = new BinaryReader(stream);

            winOccupied = reader.Read(window, 0, window.Length);
            winOffset   = 0;
        }