public void TestChangeExtension()
{
var filename = Path.Combine(longPathDirectory, "filename.ext");
var expectedFilenameWithNewExtension = Path.Combine(longPathDirectory, "filename.txt");
Assert.AreEqual(expectedFilenameWithNewExtension, Path.ChangeExtension(filename, ".txt"));
}
private void RecursivelyRetryDownload(string downloadURL, ref string tempFilePath, int count, int maxretry)
{
try
{
// download image
if (downloadURL.Length <= 0)
{
return;
}
using (WebClient client = new WebClient())
{
client.Headers.Add("user-agent", "JMM");
//OnImageDownloadEvent(new ImageDownloadEventArgs("", req, ImageDownloadEventType.Started));
//BaseConfig.MyAnimeLog.Write("ProcessImages: Download: {0} *** to *** {1}", req.URL, fullName);
byte[] bytes = client.DownloadData(downloadURL);
if (bytes.Length < 4)
{
throw new WebException(
"The image download stream returned less than 4 bytes (a valid image has 2-4 bytes in the header)");
}
ImageFormatEnum imageFormat = Misc.GetImageFormat(bytes);
string extension;
switch (imageFormat)
{
case ImageFormatEnum.bmp:
extension = ".bmp";
break;
case ImageFormatEnum.gif:
extension = ".gif";
break;
case ImageFormatEnum.jpeg:
extension = ".jpeg";
break;
case ImageFormatEnum.png:
extension = ".png";
break;
case ImageFormatEnum.tiff:
extension = ".tiff";
break;
default: throw new WebException("The image download stream returned an invalid image");
}
if (extension.Length <= 0)
{
return;
}
string newFile = Path.ChangeExtension(tempFilePath, extension);
if (newFile == null)
{
return;
}
if (File.Exists(newFile))
{
File.Delete(newFile);
}
using (var fs = new FileStream(newFile, FileMode.Create, FileAccess.Write))
{
fs.Write(bytes, 0, bytes.Length);
}
tempFilePath = newFile;
}
}
catch (WebException)
{
if (count + 1 >= maxretry)
{
throw;
}
Thread.Sleep(500);
RecursivelyRetryDownload(downloadURL, ref tempFilePath, count + 1, maxretry);
}
}
public static string ChangeExtension(string filename, string extension)
{
return(Path.ChangeExtension(filename, extension));
}
