mirror of https://github.com/SixLabors/ImageSharp
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TODO: Remote setting plus further integration. Former-commit-id: 360cab7a4ce988c81d10657df549496990d059c7pull/17/head
James South
12 years ago
7 changed files with 662 additions and 11 deletions
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// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="IImageService.cs" company="James South">
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// Copyright (c) James South.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// Defines properties and methods for allowing retrieval of image from different means.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Web.Services |
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{ |
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using System.Collections.Generic; |
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using System.Threading.Tasks; |
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/// <summary>
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/// Defines properties and methods for allowing retrieval of image from different means.
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/// </summary>
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public interface IImageService |
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{ |
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/// <summary>
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/// Gets the key for the given implementation.
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/// <remarks>
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/// This value is used as a prefix for any image requests that should use this service.
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/// </remarks>
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/// </summary>
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string Key { get; } |
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/// <summary>
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/// Gets a value indicating whether the image service requests files from
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/// the locally based file system.
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/// </summary>
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bool IsFileLocalService { get; } |
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/// <summary>
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/// Gets or sets any additional settings required by the service.
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/// </summary>
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Dictionary<string, string> Settings { get; set; } |
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/// <summary>
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/// Gets the image using the given identifier.
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/// </summary>
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/// <param name="id">
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/// The value identifying the image to fetch.
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/// </param>
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/// <returns>
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/// The <see cref="System.Byte"/> array containing the image data.
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/// </returns>
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Task<byte[]> GetImage(object id); |
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} |
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} |
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// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="LocalFileImageService.cs" company="James South">
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// Copyright (c) James South.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// The local file image service for retrieving images from the file system.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Web.Services |
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{ |
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using System.Collections.Generic; |
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using System.IO; |
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using System.Threading.Tasks; |
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using System.Web; |
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/// <summary>
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/// The local file image service for retrieving images from the file system.
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/// </summary>
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public class LocalFileImageService : IImageService |
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{ |
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/// <summary>
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/// Gets the key for the given implementation.
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/// <remarks>
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/// This value is used as a prefix for any image requests that should use this service.
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/// </remarks>
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/// </summary>
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public string Key |
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{ |
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get |
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{ |
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return string.Empty; |
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} |
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} |
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/// <summary>
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/// Gets a value indicating whether the image service requests files from
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/// the locally based file system.
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/// </summary>
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public bool IsFileLocalService |
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{ |
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get |
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{ |
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return true; |
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} |
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} |
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/// <summary>
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/// Gets or sets any additional settings required by the service.
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/// </summary>
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public Dictionary<string, string> Settings { get; set; } |
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/// <summary>
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/// Gets the image using the given identifier.
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/// </summary>
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/// <param name="id">
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/// The value identifying the image to fetch.
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/// </param>
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/// <returns>
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/// The <see cref="System.Byte"/> array containing the image data.
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/// </returns>
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public async Task<byte[]> GetImage(object id) |
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{ |
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string path = id.ToString(); |
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byte[] buffer; |
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// Check to see if the file exists.
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// ReSharper disable once AssignNullToNotNullAttribute
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FileInfo fileInfo = new FileInfo(path); |
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if (!fileInfo.Exists) |
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{ |
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throw new HttpException(404, "No image exists at " + path); |
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} |
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using (FileStream file = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.Read, 4096, true)) |
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{ |
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buffer = new byte[file.Length]; |
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await file.ReadAsync(buffer, 0, (int)file.Length); |
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} |
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return buffer; |
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} |
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} |
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} |
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// --------------------------------------------------------------------------------------------------------------------
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// <copyright file="RemoteImageService.cs" company="James South">
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// Copyright (c) James South.
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// Licensed under the Apache License, Version 2.0.
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// </copyright>
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// <summary>
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// The remote image service.
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// </summary>
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// --------------------------------------------------------------------------------------------------------------------
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namespace ImageProcessor.Web.Services |
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{ |
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using System; |
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using System.Collections.Generic; |
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using System.IO; |
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using System.Net; |
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using System.Threading.Tasks; |
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using ImageProcessor.Web.Helpers; |
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/// <summary>
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/// The remote image service.
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/// </summary>
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public class RemoteImageService : IImageService |
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{ |
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/// <summary>
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/// Initializes a new instance of the <see cref="RemoteImageService"/> class.
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/// </summary>
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public RemoteImageService() |
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{ |
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this.Settings = new Dictionary<string, string>(); |
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} |
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/// <summary>
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/// Gets the key for the given implementation.
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/// <remarks>
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/// This value is used as a prefix for any image requests that should use this service.
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/// </remarks>
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/// </summary>
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public string Key |
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{ |
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get |
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{ |
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return "remote.axd"; |
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} |
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} |
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/// <summary>
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/// Gets a value indicating whether the image service requests files from
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/// the locally based file system.
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/// </summary>
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public bool IsFileLocalService |
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{ |
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get |
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{ |
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return false; |
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} |
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} |
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/// <summary>
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/// Gets or sets any additional settings required by the service.
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/// </summary>
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public Dictionary<string, string> Settings { get; set; } |
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/// <summary>
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/// Gets the image using the given identifier.
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/// </summary>
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/// <param name="id">
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/// The value identifying the image to fetch.
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/// </param>
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/// <returns>
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/// The <see cref="System.Byte"/> array containing the image data.
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/// </returns>
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public async Task<byte[]> GetImage(object id) |
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{ |
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Uri uri = new Uri(id.ToString()); |
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RemoteFile remoteFile = new RemoteFile(uri, false); |
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byte[] buffer = { }; |
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// Prevent response blocking.
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WebResponse webResponse = await remoteFile.GetWebResponseAsync().ConfigureAwait(false); |
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using (MemoryStream memoryStream = new MemoryStream()) |
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{ |
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using (WebResponse response = webResponse) |
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{ |
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using (Stream responseStream = response.GetResponseStream()) |
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{ |
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if (responseStream != null) |
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{ |
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responseStream.CopyTo(memoryStream); |
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// Reset the position of the stream to ensure we're reading the correct part.
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memoryStream.Position = 0; |
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buffer = memoryStream.ToArray(); |
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} |
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} |
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} |
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} |
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return buffer; |
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} |
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} |
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} |
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