/// <summary>
/// Updates the total number of written bytes by the length of a Turtle document.
/// </summary>
/// <param name="writer">The Turtle writer.</param>
/// <exception cref="ArgumentNullException"><paramref name="writer"/> is <see langword="null"/>.</exception>
public static void UpdateStats(SequentialTurtleWriter writer)
{
if (writer == null)
{
throw new ArgumentNullException("writer");
}
long bytes = writer.GetCurrentStreamSize();
long triples = writer.GetCurrentTripleCount();
ConsoleHelper.WriteSuccessLine("{0:F1} MB written; {1} triple(s) created.", (double)bytes / 1024 / 1024, triples);
byteCount += bytes;
tripleCount += triples;
}
/// <summary>
/// Downloads the file to the local file system.
/// </summary>
/// <param name="baseUri">The base URI that the relative file name can be expanded from.</param>
/// <param name="directory">The destination directory.</param>
/// <returns>The path to the downloaded file.</returns>
/// <exception cref="ArgumentNullException">Any of the arguments is <see langword="null"/>.</exception>
/// <remarks>
/// <para>This method downloads the file to the local file system.
/// After downloading, the MD5 hash of the file contents is verified.</para>
/// </remarks>
public string Download(Uri baseUri, string directory)
{
if (baseUri == null)
{
throw new ArgumentNullException("baseUri");
}
string fn = Path.Combine(directory, name);
ConsoleHelper.WriteMilestone("Downloading {0} ...", name);
using (var client = new WebClient()) {
client.DownloadFile(new Uri(baseUri, name), fn);
}
System.Console.WriteLine(" done.");
var fInfo = new FileInfo(fn);
long fileSize = fInfo.Length;
if (fileSize == this.size)
{
ConsoleHelper.WriteSuccessLine("File size of {0} bytes verified.", fileSize);
}
else
{
ConsoleHelper.WriteWarningLine("File size is {0} bytes, which differs from the expected size of {1} bytes.", fileSize, this.size);
}
byte[] hash;
using (var algo = MD5.Create()) {
using (var fs = fInfo.OpenRead()) {
hash = algo.ComputeHash(fs);
}
}
string fileMD5 = string.Join("", hash.Select(b => string.Format(System.Globalization.CultureInfo.InvariantCulture, "{0:X2}", b))).ToLowerInvariant();
if (fileMD5 == this.md5)
{
ConsoleHelper.WriteSuccessLine("MD5 hash ({0}) verified.", fileMD5);
}
else
{
ConsoleHelper.WriteWarningLine("MD5 hash of file ({0}) does not match the expected one ({1}).", fileMD5, this.md5);
}
return(fn);
}