private void CacheValidResponse(System.Web.HttpContext context, StorageFile file)
{
context.Response.Clear();
context.Response.ClearHeaders();
context.Response.ClearContent();
context.Response.StatusCode = 304;
context.Response.SuppressContent = true;
}
public IList<StorageFile> Decompress()
{
IList<StorageFile> results = new List<StorageFile>();
ZipFile file;
if (zipstream == null)
file = ZipFile.Read(compressedFile);
else
file = ZipFile.Read(zipstream);
using (file)
{
file.FlattenFoldersOnExtract = true;
foreach (ZipEntry entry in file)
{
StorageFile result = new StorageFile();
//flatten all directories, since we don't currently support directories
int pos = entry.FileName.LastIndexOf("/");
if (pos >= 0)
result.Filename = entry.FileName.Substring(pos + 1);
else
result.Filename = entry.FileName;
using (MemoryStream ms = new MemoryStream())
{
entry.Extract(ms);
result.Data = ms.ToArray();
}
results.Add(result);
}
}
return results;
}
private void GenerateThumbnail(StorageFile file, IList<StorageFile> results)
{
if (file.Data.Length > 0)
{
using (MemoryStream stream = new MemoryStream(file.Data))
{
using (MemoryStream output = new MemoryStream())
{
try
{
KalikoImage image = new KalikoImage(stream);
int width = 60;
int height = 60;
image.BackgroundColor = Color.White;
KalikoImage thumb = image.GetThumbnailImage(width, height, ThumbnailMethod.Pad);
thumb.SaveJpg(output, 75);
FileInfo info = new FileInfo(file.Filename);
StorageFile thumbnail = new StorageFile();
thumbnail.Filename = info.Name.Replace(info.Extension, "") + "-thumb.jpg";
thumbnail.Data = output.ToArray();
results.Add(thumbnail);
}
catch (Exception)
{
throw new ArgumentException("The uploaded content is not supported. Must be a valid image type (png,jpeg or gif)");
}
}
}
}
}
/// <summary>
/// Adds a new image to the site
/// </summary>
/// <param name="siteGuid"></param>
/// <param name="contents"></param>
public IList<StorageFile> AddImage(Data.Guid siteGuid, String folder, String filename, String contentType, byte[] contents)
{
IList<StorageFile> images = new List<StorageFile>();
if (filename.ToLower().EndsWith("zip"))
{
ZipHandler handler = new ZipHandler(contents);
images = handler.Decompress();
//Make sure that the images are valid, removing any invalid ones
for (int i = images.Count - 1; i != 0; i--)
{
StorageFile file = images[i];
if (!IsValidImageType(file.Filename))
images.RemoveAt(i);
}
}
else
{
if (!IsValidImageType(filename))
throw new ArgumentException("The specified image is not a supported image type. The filename must end with one of the approved extensions: " + ValidImageExtensions.AsString(",") + ". Filename:" + filename);
StorageFile file = new StorageFile();
file.Filename = filename;
file.Data = contents;
file.ContentType = contentType;
images.Add(file);
}
IStorageClient client = StorageHelper.GetStorageClient();
String container = SiteHelper.GetStorageKey(SiteHelper.ImagesContainerKey, siteGuid.Value);
foreach (StorageFile file in images)
{
if ((file.Filename.Length > 0) && (file.Data.Length > 0))
{
client.Save(container, folder, file.Filename, file.Data, Permissions.Public);
}
}
IList<StorageFile> results = new List<StorageFile>();
//Add any new images to the database
SaveImagesToDatabase(siteGuid, client, container, folder, images, results);
return results;
}