示例#1
0
        private static IntPtr Open(string fileName, int flag, int mode, ref int error, IntPtr data)
        {
            FileAccess    access    = FileAccessFromOpenFlag(flag);
            FileMode      fileMode  = FileModeFromOpenFlag(flag);
            FileShare     share     = FileShareFromModeFlag(mode);
            CustomCabData userData  = (CustomCabData)((GCHandle)data).Target;
            var           directory = Path.GetDirectoryName(fileName);

            try
            {
                if (access == FileAccess.Write || access == FileAccess.ReadWrite)
                {
                    if (!Directory.Exists(directory))
                    {
                        Directory.CreateDirectory(directory);
                    }
                }

                var stream = new FileStream(fileName, fileMode, access, share);
                return((IntPtr)GCHandle.Alloc(stream));
            }
            catch (IOException e)
            {
                userData.ErrorInfo = e;
            }

            return(IntPtr.Zero);
        }
示例#2
0
 public void CreateFciContext(string cabFileName)
 {
     this.error = new NativeHelper.CabError();
     NativeHelper.CompressionInfo cabInfo = new NativeHelper.CompressionInfo(cabFileName);
     this.customData  = new CustomCabData();
     CustomDataHandle = GCHandle.Alloc(this.customData);
     fciContext       = NativeHelper.FCICreate(
         this.error,
         FciFilePlacedMethod,
         FciAllocMemHandler,
         FdiFreeMemHandler,
         FciOpenMethod,
         FciReadMethod,
         FciWriteMethod,
         FciCloseMethod,
         FciSeekMethod,
         FciDlDeleteMethod,
         FciGetTempFileMethod,
         cabInfo,
         (IntPtr)CustomDataHandle);
     if (this.customData.ErrorInfo != null)
     {
         throw this.customData.ErrorInfo;
     }
 }
示例#3
0
        private static bool GetTempFile(IntPtr tempFileName, int tempNameSize, IntPtr data)
        {
            string        fileName = string.Empty;
            CustomCabData userData = (CustomCabData)((GCHandle)data).Target;

            try
            {
                fileName = Path.GetTempFileName();
                if (!string.IsNullOrEmpty(fileName) && fileName.Length < tempNameSize)
                {
                    byte[] name = Encoding.GetEncoding(0).GetBytes(fileName);
                    Marshal.Copy(name, 0, tempFileName, name.Length);
                    Marshal.WriteByte(tempFileName, name.Length, 0);
                }
            }
            catch (IOException ex)
            {
                userData.ErrorInfo = ex;
                return(false);
            }
            finally
            {
                if (!string.IsNullOrEmpty(fileName))
                {
                    File.Delete(fileName);
                }
            }

            return(true);
        }
示例#4
0
        private static IntPtr GetOpenInfo(
            string fileName,
            ref int date,
            ref int time,
            ref short attributes,
            ref int error,
            IntPtr data)
        {
            CustomCabData userData = (CustomCabData)((GCHandle)data).Target;

            try
            {
                attributes = AttributeFlagsFromFileAttributes(File.GetAttributes(fileName));
                var dateTime = File.GetLastWriteTime(fileName);
                date = ConvertDate(dateTime);
                time = ConvertTime(dateTime);

                var stream = new FileStream(fileName, FileMode.Open, FileAccess.Read, FileShare.None);
                return((IntPtr)GCHandle.Alloc(stream));
            }
            catch (IOException ex)
            {
                userData.ErrorInfo = ex;
                error = 1;
                return(IntPtr.Zero);
            }
        }
示例#5
0
        private static int Read(IntPtr fileHandle, byte[] buffer, int count, ref int error, IntPtr data)
        {
            FileStream    stream  = (FileStream)((GCHandle)fileHandle).Target;
            CustomCabData cabData = (CustomCabData)((GCHandle)data).Target;

            try
            {
                return(stream.Read(buffer, 0, count));
            }
            catch (IOException e)
            {
                cabData.ErrorInfo = e;
                return(0);
            }
        }
示例#6
0
        private static int Seek(IntPtr fileHandle, int distance, int seekType, ref int error, IntPtr data)
        {
            FileStream    stream   = (FileStream)((GCHandle)fileHandle).Target;
            SeekOrigin    origin   = SeekOriginFromType(seekType);
            CustomCabData userData = (CustomCabData)((GCHandle)data).Target;

            try
            {
                return((int)stream.Seek(distance, origin));
            }
            catch (IOException e)
            {
                userData.ErrorInfo = e;
                return(-1);
            }
        }
示例#7
0
        private static int Close(IntPtr fileHandle, ref int error, IntPtr data)
        {
            CustomCabData userData = (CustomCabData)((GCHandle)data).Target;

            try
            {
                FileStream stream = (FileStream)((GCHandle)fileHandle).Target;
                stream.Dispose();
                return(0);
            }
            catch (IOException e)
            {
                userData.ErrorInfo = e;
                return(-1);
            }
            finally
            {
                ((GCHandle)fileHandle).Free();
            }
        }