private static void TestDownloadNzbStreaming(NntpClient client, string nzbFileName)
{
string fullPath = Path.Combine(nzbFileName);
string nzbData = File.ReadAllText(fullPath, UsenetEncoding.Default);
NzbDocument nzbDocument = NzbParser.Parse(nzbData);
string downloadDir = Path.Combine("downloads", nzbFileName);
Directory.CreateDirectory(downloadDir);
var sw = new Stopwatch();
sw.Restart();
log.LogInformation("Downloading nzb {nzbFileName}", nzbFileName);
foreach (NzbFile file in nzbDocument.Files)
{
log.LogInformation("Downloading file {subject}", file.Subject);
foreach (NzbSegment segment in file.Segments)
{
log.LogInformation("Downloading article {messageId}", segment.MessageId);
NntpArticleResponse response = client.Article(segment.MessageId);
using (YencStream yencStream = YencStreamDecoder.Decode(response.Article.Body))
{
YencHeader header = yencStream.Header;
string fileName = Path.Combine(downloadDir, header.FileName);
if (!File.Exists(fileName))
{
log.LogInformation("Creating file {fileName}", fileName);
// create file and pre-allocate disk space for it
using (FileStream stream = File.Create(fileName))
{
stream.SetLength(header.FileSize);
}
}
log.LogInformation("Writing {size} bytes to file {fileName} at offset {offset}",
header.PartSize, fileName, header.PartOffset);
using (FileStream stream = File.Open(
fileName, FileMode.OpenOrCreate, FileAccess.Write, FileShare.ReadWrite))
{
stream.Seek(header.PartOffset, SeekOrigin.Begin);
yencStream.CopyTo(stream);
}
}
}
}
log.LogInformation("Nzb downloaded in {elapsed}", sw.Elapsed);
}
public void ShouldBeEncodedAsPartOfMultiPartFile()
{
List <string> expectedText = testData
.GetEmbeddedFile(@"yenc.multipart.test (1.2).ntx")
.ReadAllLines(UsenetEncoding.Default)
.Skip(3)
.Take(10)
.ToList();
byte[] data = testData.GetEmbeddedFile(@"yenc.multipart.test (1.2).dat").ReadAllBytes();
using var stream = new MemoryStream(data);
var header = new YencHeader("test (1.2).txt", 120, 10, 1, 2, data.Length, 0);
List <string> actualText = YencEncoder.Encode(header, stream).ToList();
Assert.Equal(expectedText, actualText);
}
