/// <summary>
/// Initializes the supplied <see cref="RssChannel"/> collection entities using the specified <see cref="XPathNavigator"/> and <see cref="XmlNamespaceManager"/>.
/// </summary>
/// <param name="channel">The <see cref="RssChannel"/> to be filled.</param>
/// <param name="navigator">The <see cref="XPathNavigator"/> used to navigate the channel XML data.</param>
/// <param name="manager">The <see cref="XmlNamespaceManager"/> used to resolve XML namespace prefixes.</param>
/// <param name="settings">The <see cref="SyndicationResourceLoadSettings"/> object used to configure the load operation.</param>
/// <exception cref="ArgumentNullException">The <paramref name="channel"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="navigator"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="manager"/> is a null reference (Nothing in Visual Basic).</exception>
/// <exception cref="ArgumentNullException">The <paramref name="settings"/> is a null reference (Nothing in Visual Basic).</exception>
private static void FillChannelCollections(RssChannel channel, XPathNavigator navigator, XmlNamespaceManager manager, SyndicationResourceLoadSettings settings)
{
Guard.ArgumentNotNull(channel, "channel");
Guard.ArgumentNotNull(navigator, "navigator");
Guard.ArgumentNotNull(manager, "manager");
Guard.ArgumentNotNull(settings, "settings");
XPathNodeIterator skipDaysIterator = navigator.Select("skipDays/day", manager);
XPathNodeIterator skipHoursIterator = navigator.Select("skipHours/hour", manager);
XPathNodeIterator itemIterator = navigator.Select("item", manager);
if (skipDaysIterator != null && skipDaysIterator.Count > 0)
{
while (skipDaysIterator.MoveNext())
{
if (!String.IsNullOrEmpty(skipDaysIterator.Current.Value))
{
try
{
DayOfWeek day = (DayOfWeek)Enum.Parse(typeof(DayOfWeek), skipDaysIterator.Current.Value, true);
if (!channel.SkipDays.Contains(day))
{
channel.SkipDays.Add(day);
}
}
catch (ArgumentException)
{
System.Diagnostics.Trace.TraceWarning("Rss092SyndicationResourceAdapter unable to determine DayOfWeek with a name of {0}.", skipDaysIterator.Current.Value);
}
}
}
}
if (skipHoursIterator != null && skipHoursIterator.Count > 0)
{
while (skipHoursIterator.MoveNext())
{
int hour;
if (Int32.TryParse(skipHoursIterator.Current.Value, NumberStyles.Integer, NumberFormatInfo.InvariantInfo, out hour))
{
hour = hour - 1; // Convert to zero-based range
if (!channel.SkipHours.Contains(hour) && (hour >= 0 && hour <= 23))
{
channel.SkipHours.Add(hour);
}
else
{
System.Diagnostics.Trace.TraceWarning("Rss092SyndicationResourceAdapter unable to add duplicate or out-of-range skip hour with a value of {0}.", hour);
}
}
}
}
if (itemIterator != null && itemIterator.Count > 0)
{
int counter = 0;
while (itemIterator.MoveNext())
{
RssItem item = new RssItem();
counter++;
if (settings.RetrievalLimit != 0 && counter > settings.RetrievalLimit)
{
break;
}
Rss092SyndicationResourceAdapter.FillItem(item, itemIterator.Current, manager, settings);
((Collection <RssItem>)channel.Items).Add(item);
}
}
}
