public FeedInfo Parse(XmlReader reader)
{
try
{
FeedInfo info = new FeedInfo();
//create a List of type Dictionary<string,string> for the element names and values
List<Dictionary<string, string>> items = new List<Dictionary<string, string>>();
// declare a Dictionary to capture each current Item in the while loop
Dictionary<string, string> currentItem = null;
bool parsingItems = false;
/// Read each element with the reader
while (reader.Read())
{
// if it's an element, we want to process it
if (reader.NodeType == XmlNodeType.Element)
{
string name = reader.Name.ToLowerInvariant();
// handle title
if (!parsingItems && name == "title")
{
reader.Read();
info.Title = reader.Value;
}
// handle language
if (!parsingItems && name == "language")
{
reader.Read();
info.Language = reader.Value;
}
/* most feed logos/images/icons are not square, so we are not using this for now
// handle icon
if (!parsingItems && name == "logo") // atom
{
reader.Read();
info.Icon = reader.Value;
}
else if (!parsingItems && name == "image") // rss
{
bool search = true;
while (search)
{
reader.Read();
if (reader.Name == "url")
{
reader.Read();
info.Icon = reader.Value;
}
if (reader.Name == "image" && reader.NodeType == XmlNodeType.EndElement)
search = false;
}
}
* */
if (name == "item" || name == "entry")
{
parsingItems = true;
// Save previous item
if (currentItem != null)
items.Add(currentItem);
// Create new item
currentItem = new Dictionary<string, string>();
}
else if (currentItem != null)
{
// some feeds can have duplicate keys, so we don't want to blow up here:
if (!currentItem.ContainsKey(name))
{
// handle <link> href attribute
string href = String.Empty;
if (name == "link" && reader.HasAttributes)
{
href = reader.GetAttribute("href");
}
reader.Read();
string val = reader.Value.Trim();
if (!String.IsNullOrEmpty(href) && String.IsNullOrEmpty(val))
val = href;
currentItem.Add(name, val);
}
}
}
}
// Save previous item
if (currentItem != null)
items.Add(currentItem);
// now create a List of type GenericFeedItem
List<FeedItem> itemList = new List<FeedItem>();
// iterate all our items from the reader
foreach (Dictionary<string, string> d in items)
{
FeedItem itm = new FeedItem();
//do a switch on the Key of the Dictionary <string, string> of each item
foreach (string k in d.Keys)
{
switch (k)
{
case "title":
itm.Title = d[k];
break;
case "link":
itm.Link = d[k];
break;
case "published":
case "pubdate":
case "issued":
case "updated":
DateTime dt;
bool ok = Rfc822DateTime.TryParse(d[k], info.Language, out dt);
itm.PubDate = ok ? dt : DateTime.Now;
// log failed date parsing so we can update the format.xml file if needed
if (!ok)
{
string msg = String.Format("Feed Plugin: DateTime parsing failed for value '{0}'; Feed '{1}'", d[k], info.Url);
Growl.CoreLibrary.DebugInfo.WriteLine(msg);
}
break;
case "content":
case "description":
itm.Description = d[k];
break;
default:
break;
}
}
// add the created item to our List
itemList.Add(itm);
}
info.Items = itemList;
return info;
}
catch
{
return null;
}
}
public FeedInfo Parse(XmlReader reader)
{
try
{
FeedInfo info = new FeedInfo();
//create a List of type Dictionary<string,string> for the element names and values
List <Dictionary <string, string> > items = new List <Dictionary <string, string> >();
// declare a Dictionary to capture each current Item in the while loop
Dictionary <string, string> currentItem = null;
bool parsingItems = false;
/// Read each element with the reader
while (reader.Read())
{
// if it's an element, we want to process it
if (reader.NodeType == XmlNodeType.Element)
{
string name = reader.Name.ToLowerInvariant();
// handle title
if (!parsingItems && name == "title")
{
reader.Read();
info.Title = reader.Value;
}
// handle language
if (!parsingItems && name == "language")
{
reader.Read();
info.Language = reader.Value;
}
/* most feed logos/images/icons are not square, so we are not using this for now
* // handle icon
* if (!parsingItems && name == "logo") // atom
* {
* reader.Read();
* info.Icon = reader.Value;
* }
* else if (!parsingItems && name == "image") // rss
* {
* bool search = true;
* while (search)
* {
* reader.Read();
* if (reader.Name == "url")
* {
* reader.Read();
* info.Icon = reader.Value;
* }
*
* if (reader.Name == "image" && reader.NodeType == XmlNodeType.EndElement)
* search = false;
* }
* }
* */
if (name == "item" || name == "entry")
{
parsingItems = true;
// Save previous item
if (currentItem != null)
{
items.Add(currentItem);
}
// Create new item
currentItem = new Dictionary <string, string>();
}
else if (currentItem != null)
{
// some feeds can have duplicate keys, so we don't want to blow up here:
if (!currentItem.ContainsKey(name))
{
// handle <link> href attribute
string href = String.Empty;
if (name == "link" && reader.HasAttributes)
{
href = reader.GetAttribute("href");
}
reader.Read();
string val = reader.Value.Trim();
if (!String.IsNullOrEmpty(href) && String.IsNullOrEmpty(val))
{
val = href;
}
currentItem.Add(name, val);
}
}
}
}
// Save previous item
if (currentItem != null)
{
items.Add(currentItem);
}
// now create a List of type GenericFeedItem
List <FeedItem> itemList = new List <FeedItem>();
// iterate all our items from the reader
foreach (Dictionary <string, string> d in items)
{
FeedItem itm = new FeedItem();
//do a switch on the Key of the Dictionary <string, string> of each item
foreach (string k in d.Keys)
{
switch (k)
{
case "title":
itm.Title = d[k];
break;
case "link":
itm.Link = d[k];
break;
case "published":
case "pubdate":
case "issued":
case "updated":
DateTime dt;
bool ok = Rfc822DateTime.TryParse(d[k], info.Language, out dt);
itm.PubDate = ok ? dt : DateTime.Now;
// log failed date parsing so we can update the format.xml file if needed
if (!ok)
{
string msg = String.Format("Feed Plugin: DateTime parsing failed for value '{0}'; Feed '{1}'", d[k], info.Url);
Growl.CoreLibrary.DebugInfo.WriteLine(msg);
}
break;
case "content":
case "description":
itm.Description = d[k];
break;
default:
break;
}
}
// add the created item to our List
itemList.Add(itm);
}
info.Items = itemList;
return(info);
}
catch
{
return(null);
}
}
private void ProcessFeed(FeedInfo feed)
{
DateTimeOffset mostRecentItem = this.feedLastUpdated;
if (mostRecentItem == DateTimeOffset.MaxValue) mostRecentItem = DateTimeOffset.MinValue;
Growl.CoreLibrary.DebugInfo.WriteLine(String.Format("Feed Retrieved: {0} - Last Most Recent Item: {1}", this.Description, mostRecentItem));
foreach (FeedItem item in feed.Items)
{
DateTimeOffset itemDate = item.PubDate;
if (itemDate > mostRecentItem)
mostRecentItem = itemDate;
if (itemDate > this.feedLastUpdated)
{
Growl.CoreLibrary.DebugInfo.WriteLine(String.Format("{0} - New Feed Item - Published at: {1} - (last update at: {2})", this.Description, itemDate, this.feedLastUpdated));
item.SourceFeed = feed;
Notification n = new Notification(this.AppName, this.ntNewFeedItem.Name, String.Empty, this.AppName, item.Title);
n.Icon = feed.Icon;
CallbackContext c = null;
if (!String.IsNullOrEmpty(item.Link))
{
c = new CallbackContext(item.Link);
}
// the NotificationQueue provides some simple throttling so that the screen is not flooded with new items
// (especially important at load time when there could be lots of new items)
NotificationQueue.Enqueue(n, c);
}
}
this.feedLastUpdated = mostRecentItem; // feed.LastUpdatedTime is not always set =(
}