/// <summary>Private routine to build XDocument of URLs</summary>
/// <param name="inputStream">Stream to read URL lines</param>
/// <param name="urlChecker">Checker of read URL lines</param>
/// <param name="logger">Wrong URL logger, may be null</param>
/// <returns>XML document with URL's info</returns>
private static XDocument BuildXDocumentRoutine(Stream inputStream, URLChecker urlChecker, TextWriter logger)
{
// Create XML document basement
var declaration = new XDeclaration("1.0", "UTF-8", "yes");
var document = new XDocument(declaration, new XElement("urlAddresses"));
// Read urls
string url;
var streamReader = new StreamReader(inputStream);
while ((url = streamReader.ReadLine()) != null)
{
// Check url and print log
if (urlChecker.CheckURL(url))
{
var urlElement = BuildURLElement(url);
document.Root.Add(urlElement);
if (logger != null)
{
logger.WriteLine("[VALID]: " + url);
}
}
else
{
if (logger != null)
{
logger.WriteLine("[INVALID]: " + url);
}
}
}
return(document);
}
/// <summary>Public interface to build XDocument of URLs</summary>
/// <param name="inputStream">Stream to read URL lines</param>
/// <param name="urlChecker">Checker of read URL lines</param>
/// <param name="logger">Wrong URL logger, may be null</param>
/// <returns>XML document with URL's info</returns>
public static XDocument BuildXDocument(Stream inputStream, URLChecker urlChecker, TextWriter logger)
{
// Check arguments for null
if (inputStream != null && urlChecker != null)
{
// Check stream for readability
if (inputStream.CanRead)
{
return(BuildXDocumentRoutine(inputStream, urlChecker, logger));
}
else
{
throw new ArgumentException();
}
}
else
{
throw new ArgumentNullException();
}
}
/// <summary>Public interface to build XDocument of URLs without logging</summary>
/// <param name="inputStream">Stream to read URL lines</param>
/// <param name="urlChecker">Checker of read URL lines</param>
/// <returns>XML document with URL's info</returns>
public static XDocument BuildXDocument(Stream inputStream, URLChecker urlChecker)
{
return(BuildXDocument(inputStream, urlChecker, null));
}