private static string outputExtension(ImageFormat imageFormat)
{
string result;
try
{
result = ImageTypeMapper.ByImageFormat(imageFormat).extension;
}
catch (UnknownImageTypeException)
{
result = "png";
}
return(result);
}
public override Present Realize(string refCredit)
{
HttpWebRequest httpWebRequest = (HttpWebRequest)WebRequest.Create(documentUri);
httpWebRequest.CachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.Revalidate);
D.Sayf(0, "Fetching {0}", new object[] { documentUri });
HttpWebResponse httpWebResponse;
try
{
httpWebResponse = (HttpWebResponse)httpWebRequest.GetResponse();
}
catch (WebException ex)
{
throw new Exception(string.Format("timeout waiting for url ({0})", ex.ToString()));
}
if (httpWebResponse.StatusCode != HttpStatusCode.OK)
{
throw new Exception(string.Format("HTTP {0} from web source", httpWebResponse.StatusCode.ToString()));
}
Stream responseStream = httpWebResponse.GetResponseStream();
HashAlgorithm hashAlgorithm = new SHA1CryptoServiceProvider();
string text = FileUtilities.MakeTempFilename(MakeDownloadCacheDir(), "Download");
Stream outputStream = new FileStream(text, FileMode.CreateNew);
StreamTee streamTee = new StreamTee(responseStream, outputStream);
byte[] buffer = hashAlgorithm.ComputeHash(streamTee);
streamTee.Close();
string arg = BytesToHexString(buffer);
string text2 = Path.Combine(MakeDownloadCacheDir(),
string.Format("Hash-{0}.{1}", arg, ImageTypeMapper.ByMimeType(httpWebResponse.ContentType).extension));
if (File.Exists(text2))
{
File.Delete(text);
}
else
{
File.Move(text, text2);
}
httpWebResponse.Close();
return(new SourceDocument(new LocalDocumentDescriptor(text2, pageNumber)));
}
