private void writeItem(RssItem item, int channelHashCode)
{
if (writer == null)
throw new InvalidOperationException("RssWriter has been closed, and can not be written to.");
if (item == null)
throw new ArgumentNullException("Item must be instanciated with data to be written.");
if (!wroteChannel)
throw new InvalidOperationException("Channel must be written first, before writing an item.");
BeginDocument();
writer.WriteStartElement("item");
switch (rssVersion)
{
case RssVersion.RSS090:
case RssVersion.RSS10:
case RssVersion.RSS091:
WriteElement("title", item.Title, true);
WriteElement("description", item.Description, false);
WriteElement("link", item.Link, true);
break;
case RssVersion.RSS20:
if ((item.Title == RssDefault.String) && (item.Description == RssDefault.String))
throw new ArgumentException("item title and description cannot be null");
goto case RssVersion.RSS092;
case RssVersion.RSS092:
WriteElement("title", item.Title, false);
WriteElement("description", item.Description, false);
WriteElement("link", item.Link, false);
if (item.Source != null)
{
writer.WriteStartElement("source");
WriteAttribute("url", item.Source.Url, true);
writer.WriteString(item.Source.Name);
writer.WriteEndElement();
}
if (item.Enclosure != null)
{
writer.WriteStartElement("enclosure");
WriteAttribute("url", item.Enclosure.Url, true);
WriteAttribute("length", item.Enclosure.Length, true);
WriteAttribute("type", item.Enclosure.Type, true);
writer.WriteEndElement();
}
foreach(RssCategory category in item.Categories)
if (category.Name != RssDefault.String)
{
writer.WriteStartElement("category");
WriteAttribute("domain", category.Domain, false);
writer.WriteString(category.Name);
writer.WriteEndElement();
}
break;
}
if (rssVersion == RssVersion.RSS20)
{
WriteElement("author", item.Author, false);
WriteElement("comments", item.Comments, false);
if ((item.Guid != null) && (item.Guid.Name != RssDefault.String))
{
writer.WriteStartElement("guid");
try {
WriteAttribute("isPermaLink", (bool)item.Guid.PermaLink, false);
} catch {}
writer.WriteString(item.Guid.Name);
writer.WriteEndElement();
}
WriteElement("pubDate", item.PubDate, false);
foreach(RssModule rssModule in this._rssModules)
{
if(rssModule.IsBoundTo(channelHashCode))
{
foreach(RssModuleItemCollection rssModuleItemCollection in rssModule.ItemExtensions)
{
if(rssModuleItemCollection.IsBoundTo(item.GetHashCode()))
writeSubElements(rssModuleItemCollection, rssModule.NamespacePrefix);
}
}
}
}
writer.WriteEndElement();
writer.Flush();
}
private void writeItem(RssItem item, int channelHashCode)
{
if (writer == null)
{
throw new InvalidOperationException("RssWriter has been closed, and can not be written to.");
}
if (item == null)
{
throw new ArgumentNullException("Item must be instanciated with data to be written.");
}
if (!wroteChannel)
{
throw new InvalidOperationException("Channel must be written first, before writing an item.");
}
BeginDocument();
writer.WriteStartElement("item");
switch (rssVersion)
{
case RssVersion.RSS090:
case RssVersion.RSS10:
case RssVersion.RSS091:
WriteElement("title", item.Title, true);
WriteElement("description", item.Description, false);
WriteElement("link", item.Link, true);
break;
case RssVersion.RSS20:
if ((item.Title == RssDefault.String) && (item.Description == RssDefault.String))
{
throw new ArgumentException("item title and description cannot be null");
}
goto case RssVersion.RSS092;
case RssVersion.RSS092:
WriteElement("title", item.Title, false);
WriteElement("description", item.Description, false);
WriteElement("link", item.Link, false);
if (item.Source != null)
{
writer.WriteStartElement("source");
WriteAttribute("url", item.Source.Url, true);
writer.WriteString(item.Source.Name);
writer.WriteEndElement();
}
if (item.Enclosure != null)
{
writer.WriteStartElement("enclosure");
WriteAttribute("url", item.Enclosure.Url, true);
WriteAttribute("length", item.Enclosure.Length, true);
WriteAttribute("type", item.Enclosure.Type, true);
writer.WriteEndElement();
}
foreach (RssCategory category in item.Categories)
{
if (category.Name != RssDefault.String)
{
writer.WriteStartElement("category");
WriteAttribute("domain", category.Domain, false);
writer.WriteString(category.Name);
writer.WriteEndElement();
}
}
break;
}
if (rssVersion == RssVersion.RSS20)
{
WriteElement("author", item.Author, false);
WriteElement("comments", item.Comments, false);
if ((item.Guid != null) && (item.Guid.Name != RssDefault.String))
{
writer.WriteStartElement("guid");
try {
WriteAttribute("isPermaLink", (bool)item.Guid.PermaLink, false);
} catch {}
writer.WriteString(item.Guid.Name);
writer.WriteEndElement();
}
WriteElement("pubDate", item.PubDate, false);
foreach (RssModule rssModule in this._rssModules)
{
if (rssModule.IsBoundTo(channelHashCode))
{
foreach (RssModuleItemCollection rssModuleItemCollection in rssModule.ItemExtensions)
{
if (rssModuleItemCollection.IsBoundTo(item.GetHashCode()))
{
writeSubElements(rssModuleItemCollection, rssModule.NamespacePrefix);
}
}
}
}
}
writer.WriteEndElement();
writer.Flush();
}
