Exemple #1
0
        /// <summary>
        /// Get a json of stats about the image. It is used to populate a tooltip when you hover over an image container
        /// </summary>
        private void HandleImageInfo(ApiRequest request)
        {
            try
            {
                var fileName = request.RequiredFileNameOrPath("image");
                Guard.AgainstNull(_bookSelection.CurrentSelection, "CurrentBook");
                var plainfilename = fileName.NotEncoded;
                // The fileName might be URL encoded.  See https://silbloom.myjetbrains.com/youtrack/issue/BL-3901.
                var path = UrlPathString.GetFullyDecodedPath(_bookSelection.CurrentSelection.FolderPath, ref plainfilename);
                RequireThat.File(path).Exists();
                var     fileInfo = new FileInfo(path);
                dynamic result   = new ExpandoObject();
                result.name  = plainfilename;
                result.bytes = fileInfo.Length;

                // Using a stream this way, according to one source,
                // http://stackoverflow.com/questions/552467/how-do-i-reliably-get-an-image-dimensions-in-net-without-loading-the-image,
                // supposedly avoids loading the image into memory when we only want its dimensions
                using (var stream = RobustFile.OpenRead(path))
                    using (var img = Image.FromStream(stream, false, false))
                    {
                        result.width  = img.Width;
                        result.height = img.Height;
                        switch (img.PixelFormat)
                        {
                        case PixelFormat.Format32bppArgb:
                        case PixelFormat.Format32bppRgb:
                        case PixelFormat.Format32bppPArgb:
                            result.bitDepth = "32";
                            break;

                        case PixelFormat.Format24bppRgb:
                            result.bitDepth = "24";
                            break;

                        case PixelFormat.Format16bppArgb1555:
                        case PixelFormat.Format16bppGrayScale:
                            result.bitDepth = "16";
                            break;

                        case PixelFormat.Format8bppIndexed:
                            result.bitDepth = "8";
                            break;

                        case PixelFormat.Format1bppIndexed:
                            result.bitDepth = "1";
                            break;

                        default:
                            result.bitDepth = "unknown";
                            break;
                        }
                    }
                request.ReplyWithJson((object)result);
            }
            catch (Exception e)
            {
                Logger.WriteEvent("Error in server imageInfo/: url was " + request.LocalPath());
                Logger.WriteEvent("Error in server imageInfo/: exception is " + e.Message);
                request.Failed(e.Message);
                NonFatalProblem.Report(ModalIf.None, PassiveIf.Alpha, "Request Error", request.LocalPath(), e);
            }
        }
Exemple #2
0
        /// <summary>
        /// Get a json of stats about the image. It is used to populate a tooltip when you hover over an image container
        /// </summary>
        private void HandleImageInfo(ApiRequest request)
        {
            try
            {
                var fileName = request.RequiredParam("image");
                Guard.AgainstNull(_bookSelection.CurrentSelection, "CurrentBook");
                var path = Path.Combine(_bookSelection.CurrentSelection.FolderPath, fileName);
                while (!RobustFile.Exists(path) && fileName.Contains('%'))
                {
                    var fileName1 = fileName;
                    // We can be fed doubly-encoded filenames.  So try to decode a second time and see if that works.
                    // See https://silbloom.myjetbrains.com/youtrack/issue/BL-3749.
                    // Effectively triple-encoded filenames have cropped up for particular books.  Such files are
                    // already handled okay by EnhancedImageServer.ProcessAnyFileContent().  This code can handle
                    // any depth of url-encoding.
                    // See https://silbloom.myjetbrains.com/youtrack/issue/BL-5757.
                    fileName = System.Web.HttpUtility.UrlDecode(fileName);
                    if (fileName == fileName1)
                    {
                        break;
                    }
                    path = Path.Combine(_bookSelection.CurrentSelection.FolderPath, fileName);
                }
                RequireThat.File(path).Exists();
                var     fileInfo = new FileInfo(path);
                dynamic result   = new ExpandoObject();
                result.name  = fileName;
                result.bytes = fileInfo.Length;

                // Using a stream this way, according to one source,
                // http://stackoverflow.com/questions/552467/how-do-i-reliably-get-an-image-dimensions-in-net-without-loading-the-image,
                // supposedly avoids loading the image into memory when we only want its dimensions
                using (var stream = RobustFile.OpenRead(path))
                    using (var img = Image.FromStream(stream, false, false))
                    {
                        result.width  = img.Width;
                        result.height = img.Height;
                        switch (img.PixelFormat)
                        {
                        case PixelFormat.Format32bppArgb:
                        case PixelFormat.Format32bppRgb:
                        case PixelFormat.Format32bppPArgb:
                            result.bitDepth = "32";
                            break;

                        case PixelFormat.Format24bppRgb:
                            result.bitDepth = "24";
                            break;

                        case PixelFormat.Format16bppArgb1555:
                        case PixelFormat.Format16bppGrayScale:
                            result.bitDepth = "16";
                            break;

                        case PixelFormat.Format8bppIndexed:
                            result.bitDepth = "8";
                            break;

                        case PixelFormat.Format1bppIndexed:
                            result.bitDepth = "1";
                            break;

                        default:
                            result.bitDepth = "unknown";
                            break;
                        }
                    }
                request.ReplyWithJson((object)result);
            }
            catch (Exception e)
            {
                Logger.WriteError("Error in server imageInfo/: url was " + request.LocalPath(), e);
                request.Failed(e.Message);
            }
        }