public static RssDocument AddChannel(RssChannel channel, RssDocument doc, out bool success)
{
if (doc.currentChannelsNum + 1 > doc.maxChannelsNum)
{
success = false;
return(doc);
}
doc.Channels.AddLast(channel);
success = true;
return(doc);
}
public static RssDocument AddItem(RssItem item, RssDocument doc, string ChannelName, bool Append, out bool success)
{
int maxItem = -1;
if (doc.maxItemsPerChannelNum != null)
{
maxItem = doc.maxItemsPerChannelNum.Value;
}
var channel = (from n in doc.Channels
where n.Title == ChannelName
select n).ElementAt(0);
if (channel.maxItemsNum != null)
{
maxItem = channel.maxItemsNum.Value;
}
if (!Append)
{
channel.Items.RemoveLast();
channel.Items.AddFirst(item);
success = true;
}
else
{
if (maxItem == -1)
{
channel.Items.AddFirst(item);
channel.currentItemsNum++;
success = true;
}
else if (channel.maxItemsNum < channel.currentItemsNum + 1)
{
channel.Items.AddFirst(item);
channel.currentItemsNum++;
success = true;
}
else
{
success = false;
}
}
return(doc);
}
public static RssDocument Load(string Path)
{
RssDocument rssDoc = new RssDocument();
rssDoc.Channels = new LinkedList <RssChannel>();
XDocument doc = XDocument.Load(Path);
var Channels = from Channel in doc.Descendants("channel")
select Channel;
rssDoc.currentChannelsNum = 0;
rssDoc.maxChannelsNum = 0;
rssDoc.maxItemsPerChannelNum = 0;
foreach (var channelElement in Channels)
{
RssChannel channel = new RssChannel();
channel.Title = channelElement.Element("title").Value;
channel.Link = channelElement.Element("link").Value;
channel.Description = channelElement.Element("description").Value;
channel.Category = channelElement.Element("category").Value;
channel.Items = new LinkedList <RssItem>();
var items = from item in channelElement.Descendants("item")
select item;
foreach (var itemElement in items)
{
RssItem item = new RssItem();
item.Title = itemElement.Element("title").Value;
item.Link = itemElement.Element("link").Value;
item.Description = itemElement.Element("description").Value;
item.Category = itemElement.Element("category").Value;
channel.Items.AddLast(item);
}
channel.maxItemsNum = items.Count();
channel.currentItemsNum = channel.maxItemsNum.Value;
rssDoc.maxItemsPerChannelNum = (channel.currentItemsNum > rssDoc.maxItemsPerChannelNum.Value ? channel.currentItemsNum : rssDoc.maxItemsPerChannelNum.Value);
rssDoc.Channels.AddLast(channel);
}
rssDoc.maxChannelsNum = Channels.Count();
rssDoc.currentChannelsNum = rssDoc.maxChannelsNum.Value;
rssDoc.filePath = Path;
return(rssDoc);
}
public static void Build(RssDocument document)
{
XDocument doc = new XDocument();
XElement RssRoot = new XElement("rss",
new XAttribute("version", "2.0")
);
foreach (var Channel in document.Channels)
{
XElement channelElement = new XElement("channel",
new XElement("title", Channel.Title),
new XElement("link", Channel.Link),
new XElement("description", Channel.Description)
);
if (Channel.Category != null)
{
channelElement.Add(new XElement("category", Channel.Category));
}
foreach (var Item in Channel.Items)
{
XElement ItemElement = new XElement("item",
new XElement("title", Item.Title),
new XElement("link", Item.Link),
new XElement("description", Item.Description)
);
if (Item.Category != null)
{
ItemElement.Add(new XElement("category", Item.Category));
}
channelElement.Add(ItemElement);
}
RssRoot.Add(channelElement);
}
doc.Add(RssRoot);
doc.Save(new FileStream(@document.filePath, FileMode.Create));
}
public static RssDocument AddItem(string title, string link, string description, string category, RssDocument doc, string ChannelName, bool Append, out bool success)
{
RssItem item = new RssItem();
item.Title = title;
item.Link = link;
item.Description = description;
item.Category = category;
return(AddItem(item, doc, ChannelName, Append, out success));
}
