/// <summary>Reads the next RssElement from the stream.</summary>
/// <returns>An RSS Element</returns>
/// <exception cref="InvalidOperationException">RssReader has been closed, and can not be read.</exception>
/// <exception cref="System.IO.FileNotFoundException">RSS file not found.</exception>
/// <exception cref="System.Xml.XmlException">Invalid XML syntax in RSS file.</exception>
/// <exception cref="System.IO.EndOfStreamException">Unable to read an RssElement. Reached the end of the stream.</exception>
public RssElement Read()
{
bool readData = false;
bool pushElement = true;
RssElement rssElement = null;
int lineNumber = -1;
int linePosition = -1;
if (reader == null)
{
throw new InvalidOperationException("RssReader has been closed, and can not be read.");
}
do
{
pushElement = true;
try
{
readData = reader.Read();
}
catch (System.IO.EndOfStreamException e)
{
throw new System.IO.EndOfStreamException("Unable to read an RssElement. Reached the end of the stream.", e);
}
catch (System.Xml.XmlException e)
{
if (lineNumber != -1 || linePosition != -1)
{
if (reader.LineNumber == lineNumber && reader.LinePosition == linePosition)
{
throw exceptions.LastException;
}
}
lineNumber = reader.LineNumber;
linePosition = reader.LinePosition;
exceptions.Add(e); // just add to list of exceptions and continue :)
//// Added, OFxP
//if (readData)
//{
// continue;
//}
}
if (readData)
{
string readerName = reader.Name.ToLower();
switch (reader.NodeType)
{
case XmlNodeType.Element:
{
if (reader.IsEmptyElement)
{
break;
}
elementText = new StringBuilder();
switch (readerName)
{
case "item":
// is this the end of the channel element? (absence of </channel> before <item>)
if (!wroteChannel)
{
wroteChannel = true;
rssElement = channel; // return RssChannel
readData = false;
}
item = new RssItem(); // create new RssItem
channel.Items.Add(item);
break;
case "source":
source = new RssSource();
item.Source = source;
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
switch (reader.Name.ToLower())
{
case "url":
try
{
// OFxP, fix
//source.Url = new Uri(reader.Value);
source.Url = new Uri(reader.Value, true);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
}
}
break;
case "enclosure":
enclosure = new RssEnclosure();
item.Enclosure = enclosure;
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
switch (reader.Name.ToLower())
{
case "url":
try
{
// OFxP, fix
//enclosure.Url = new Uri(reader.Value);
enclosure.Url = new Uri(reader.Value, true);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "length":
try
{
enclosure.Length = int.Parse(reader.Value);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "type":
enclosure.Type = reader.Value;
break;
}
}
break;
case "guid":
guid = new RssGuid();
item.Guid = guid;
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
switch (reader.Name.ToLower())
{
case "ispermalink":
try
{
guid.PermaLink = bool.Parse(reader.Value);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
}
}
break;
case "category":
category = new RssCategory();
if ((string)xmlNodeStack.Peek() == "channel")
{
channel.Categories.Add(category);
}
else
{
item.Categories.Add(category);
}
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
switch (reader.Name.ToLower())
{
case "url":
goto case "domain";
case "domain":
category.Domain = reader.Value;
break;
}
}
break;
case "channel":
channel = new RssChannel();
textInput = null;
image = null;
cloud = null;
source = null;
enclosure = null;
category = null;
item = null;
break;
case "image":
image = new RssImage();
channel.Image = image;
break;
case "textinput":
textInput = new RssTextInput();
channel.TextInput = textInput;
break;
case "cloud":
pushElement = false;
cloud = new RssCloud();
channel.Cloud = cloud;
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
switch (reader.Name.ToLower())
{
case "domain":
cloud.Domain = reader.Value;
break;
case "port":
try
{
cloud.Port = ushort.Parse(reader.Value);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "path":
cloud.Path = reader.Value;
break;
case "registerprocedure":
cloud.RegisterProcedure = reader.Value;
break;
case "protocol":
switch (reader.Value.ToLower())
{
case "xml-rpc":
cloud.Protocol = RssCloudProtocol.XmlRpc;
break;
case "soap":
cloud.Protocol = RssCloudProtocol.Soap;
break;
case "http-post":
cloud.Protocol = RssCloudProtocol.HttpPost;
break;
default:
cloud.Protocol = RssCloudProtocol.Empty;
break;
}
break;
}
}
break;
case "rss":
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
if (reader.Name.ToLower() == "version")
{
switch (reader.Value)
{
case "0.91":
rssVersion = RssVersion.RSS091;
break;
case "0.92":
rssVersion = RssVersion.RSS092;
break;
case "2.0":
rssVersion = RssVersion.RSS20;
break;
default:
rssVersion = RssVersion.NotSupported;
break;
}
}
}
break;
case "rdf":
for (int i = 0; i < reader.AttributeCount; i++)
{
reader.MoveToAttribute(i);
if (reader.Name.ToLower() == "version")
{
switch (reader.Value)
{
case "0.90":
rssVersion = RssVersion.RSS090;
break;
case "1.0":
rssVersion = RssVersion.RSS10;
break;
default:
rssVersion = RssVersion.NotSupported;
break;
}
}
}
break;
}
if (pushElement)
{
xmlNodeStack.Push(readerName);
}
break;
}
case XmlNodeType.EndElement:
{
if (xmlNodeStack.Count == 1)
{
break;
}
string childElementName = (string)xmlNodeStack.Pop();
string parentElementName = (string)xmlNodeStack.Peek();
switch (childElementName) // current element
{
// item classes
case "item":
rssElement = item;
readData = false;
break;
case "source":
source.Name = elementText.ToString();
rssElement = source;
readData = false;
break;
case "enclosure":
rssElement = enclosure;
readData = false;
break;
case "guid":
guid.Name = elementText.ToString();
rssElement = guid;
readData = false;
break;
case "category": // parent is either item or channel
category.Name = elementText.ToString();
rssElement = category;
readData = false;
break;
// channel classes
case "channel":
if (wroteChannel)
{
wroteChannel = false;
}
else
{
wroteChannel = true;
rssElement = channel;
readData = false;
}
break;
case "textinput":
rssElement = textInput;
readData = false;
break;
case "image":
rssElement = image;
readData = false;
break;
case "cloud":
rssElement = cloud;
readData = false;
break;
}
switch (parentElementName) // parent element
{
case "item":
switch (childElementName)
{
case "title":
item.Title = elementText.ToString();
break;
case "link":
// OFxP, fix
//item.Link = new Uri(elementText.ToString());
item.Link = new Uri(elementText.ToString(), true);
break;
case "description":
item.Description = elementText.ToString();
break;
case "author":
item.Author = elementText.ToString();
break;
case "comments":
item.Comments = elementText.ToString();
break;
case "pubdate":
item.PubDate = GeneralHelper.ParseDateTimeWithZone(elementText.ToString());
break;
}
break;
case "channel":
switch (childElementName)
{
case "title":
channel.Title = elementText.ToString();
break;
case "link":
try
{
// OFxP, fix
//channel.Link = new Uri(elementText.ToString());
channel.Link = new Uri(elementText.ToString(), true);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "description":
channel.Description = elementText.ToString();
break;
case "language":
channel.Language = elementText.ToString();
break;
case "copyright":
channel.Copyright = elementText.ToString();
break;
case "managingeditor":
channel.ManagingEditor = elementText.ToString();
break;
case "webmaster":
channel.WebMaster = elementText.ToString();
break;
case "rating":
channel.Rating = elementText.ToString();
break;
case "pubdate":
channel.PubDate = GeneralHelper.ParseDateTimeWithZone(elementText.ToString());
break;
case "lastbuilddate":
channel.LastBuildDate = GeneralHelper.ParseDateTimeWithZone(elementText.ToString());
break;
case "generator":
channel.Generator = elementText.ToString();
break;
case "docs":
channel.Docs = elementText.ToString();
break;
case "ttl":
try
{
channel.TimeToLive = int.Parse(elementText.ToString());
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
}
break;
case "image":
switch (childElementName)
{
case "url":
try
{
// OFxP, fix
//image.Url = new Uri(elementText.ToString());
image.Url = new Uri(elementText.ToString(), true);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "title":
image.Title = elementText.ToString();
break;
case "link":
try
{
// OFxP, fix
//image.Link = new Uri(elementText.ToString());
image.Link = new Uri(elementText.ToString(), true);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "description":
image.Description = elementText.ToString();
break;
case "width":
try
{
image.Width = Byte.Parse(elementText.ToString());
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
case "height":
try
{
image.Height = Byte.Parse(elementText.ToString());
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
}
break;
case "textinput":
switch (childElementName)
{
case "title":
textInput.Title = elementText.ToString();
break;
case "description":
textInput.Description = elementText.ToString();
break;
case "name":
textInput.Name = elementText.ToString();
break;
case "link":
try
{
// OFxP, fix
//textInput.Link = new Uri(elementText.ToString());
textInput.Link = new Uri(elementText.ToString(), true);
}
catch (Exception e)
{
exceptions.Add(e);
}
break;
}
break;
case "skipdays":
if (childElementName == "day")
{
channel.SkipDays |= Day.Parse(elementText.ToString());
}
break;
case "skiphours":
if (childElementName == "hour")
{
channel.SkipHours |= Hour.Parse(elementText.ToString());
}
break;
}
break;
}
case XmlNodeType.Text:
elementText.Append(reader.Value);
break;
case XmlNodeType.CDATA:
elementText.Append(reader.Value);
break;
}
}
}while (readData);
return(rssElement);
}
/// <summary>Reads the next RssElement from the stream.</summary>
/// <returns>An RSS Element</returns>
/// <exception cref="InvalidOperationException">RssReader has been closed, and can not be read.</exception>
/// <exception cref="System.IO.FileNotFoundException">RSS file not found.</exception>
/// <exception cref="System.Xml.XmlException">Invalid XML syntax in RSS file.</exception>
/// <exception cref="System.IO.EndOfStreamException">Unable to read an RssElement. Reached the end of the stream.</exception>
public RssElement Read()
{
bool readData = false;
bool pushElement = true;
RssElement rssElement = null;
int lineNumber = -1;
int linePosition = -1;
if (this.reader == null)
{
throw new InvalidOperationException("RssReader has been closed, and can not be read.");
}
do
{
pushElement = true;
try
{
readData = this.reader.Read();
}
catch (EndOfStreamException e)
{
throw new EndOfStreamException("Unable to read an RssElement. Reached the end of the stream.", e);
}
catch (XmlException e)
{
if (lineNumber != -1 || linePosition != -1)
{
if (this.reader.LineNumber == lineNumber && this.reader.LinePosition == linePosition)
{
throw this.exceptions.LastException;
}
}
lineNumber = this.reader.LineNumber;
linePosition = this.reader.LinePosition;
this.exceptions.Add(e); // just add to list of exceptions and continue :)
}
if (readData)
{
string readerName = this.reader.Name.ToLower();
switch (this.reader.NodeType)
{
case XmlNodeType.Element:
{
if (this.reader.IsEmptyElement)
{
break;
}
this.elementText = new StringBuilder();
switch (readerName)
{
case "item":
// is this the end of the channel element? (absence of </channel> before <item>)
if (!this.wroteChannel)
{
this.wroteChannel = true;
rssElement = this.channel; // return RssChannel
readData = false;
}
this.item = new RssItem(); // create new RssItem
this.channel.Items.Add(this.item);
break;
case "source":
this.source = new RssSource();
this.item.Source = this.source;
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
switch (this.reader.Name.ToLower())
{
case "url":
try
{
this.source.Url = new Uri(this.reader.Value);
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
}
}
break;
case "enclosure":
this.enclosure = new RssEnclosure();
this.item.Enclosure = this.enclosure;
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
switch (this.reader.Name.ToLower())
{
case "url":
try
{
this.enclosure.Url = new Uri(this.reader.Value);
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "length":
try
{
this.enclosure.Length = int.Parse(this.reader.Value);
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "type":
this.enclosure.Type = this.reader.Value;
break;
}
}
break;
case "guid":
this.guid = new RssGuid();
this.item.Guid = this.guid;
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
switch (this.reader.Name.ToLower())
{
case "ispermalink":
try
{
this.guid.PermaLink = bool.Parse(this.reader.Value);
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
}
}
break;
case "category":
this.category = new RssCategory();
if ((string)this.xmlNodeStack.Peek() == "channel")
{
this.channel.Categories.Add(this.category);
}
else
{
this.item.Categories.Add(this.category);
}
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
switch (this.reader.Name.ToLower())
{
case "url":
goto case "domain";
case "domain":
this.category.Domain = this.reader.Value;
break;
}
}
break;
case "channel":
this.channel = new RssChannel();
this.textInput = null;
this.image = null;
this.cloud = null;
this.source = null;
this.enclosure = null;
this.category = null;
this.item = null;
break;
case "image":
this.image = new RssImage();
this.channel.Image = this.image;
break;
case "textinput":
this.textInput = new RssTextInput();
this.channel.TextInput = this.textInput;
break;
case "cloud":
pushElement = false;
this.cloud = new RssCloud();
this.channel.Cloud = this.cloud;
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
switch (this.reader.Name.ToLower())
{
case "domain":
this.cloud.Domain = this.reader.Value;
break;
case "port":
try
{
this.cloud.Port = ushort.Parse(this.reader.Value);
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "path":
this.cloud.Path = this.reader.Value;
break;
case "registerprocedure":
this.cloud.RegisterProcedure = this.reader.Value;
break;
case "protocol":
switch (this.reader.Value.ToLower())
{
case "xml-rpc":
this.cloud.Protocol = RssCloudProtocol.XmlRpc;
break;
case "soap":
this.cloud.Protocol = RssCloudProtocol.Soap;
break;
case "http-post":
this.cloud.Protocol = RssCloudProtocol.HttpPost;
break;
default:
this.cloud.Protocol = RssCloudProtocol.Empty;
break;
}
break;
}
}
break;
case "rss":
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
if (this.reader.Name.ToLower() == "version")
{
switch (this.reader.Value)
{
case "0.91":
this.rssVersion = RssVersion.RSS091;
break;
case "0.92":
this.rssVersion = RssVersion.RSS092;
break;
case "2.0":
this.rssVersion = RssVersion.RSS20;
break;
default:
this.rssVersion = RssVersion.NotSupported;
break;
}
}
}
break;
case "rdf":
for (int i = 0; i < this.reader.AttributeCount; i++)
{
this.reader.MoveToAttribute(i);
if (this.reader.Name.ToLower() == "version")
{
switch (this.reader.Value)
{
case "0.90":
this.rssVersion = RssVersion.RSS090;
break;
case "1.0":
this.rssVersion = RssVersion.RSS10;
break;
default:
this.rssVersion = RssVersion.NotSupported;
break;
}
}
}
break;
case "geo:lat":
case "geo:long":
case "geo:point":
case "georss:point":
case "georss:elev":
case "georss:radius":
if (this.item.GeoPoint == null)
{
this.item.GeoPoint = new RssGeoPoint();
}
break;
}
if (pushElement)
{
this.xmlNodeStack.Push(readerName);
}
break;
}
case XmlNodeType.EndElement:
{
if (this.xmlNodeStack.Count == 1)
{
break;
}
string childElementName = (string)this.xmlNodeStack.Pop();
string parentElementName = (string)this.xmlNodeStack.Peek();
switch (childElementName) // current element
{
// item classes
case "item":
rssElement = this.item;
readData = false;
break;
case "source":
this.source.Name = this.elementText.ToString();
rssElement = this.source;
readData = false;
break;
case "enclosure":
rssElement = this.enclosure;
readData = false;
break;
case "guid":
this.guid.Name = this.elementText.ToString();
rssElement = this.guid;
readData = false;
break;
case "category": // parent is either item or channel
this.category.Name = this.elementText.ToString();
rssElement = this.category;
readData = false;
break;
// channel classes
case "channel":
if (this.wroteChannel)
{
this.wroteChannel = false;
}
else
{
this.wroteChannel = true;
rssElement = this.channel;
readData = false;
}
break;
case "textinput":
rssElement = this.textInput;
readData = false;
break;
case "image":
rssElement = this.image;
readData = false;
break;
case "cloud":
rssElement = this.cloud;
readData = false;
break;
}
switch (parentElementName) // parent element
{
case "item":
switch (childElementName)
{
case "title":
this.item.Title = this.elementText.ToString();
break;
case "link":
this.item.Link = new Uri(this.elementText.ToString());
break;
case "description":
this.item.Description = this.elementText.ToString();
break;
case "author":
this.item.Author = this.elementText.ToString();
break;
case "comments":
this.item.Comments = this.elementText.ToString();
break;
case "pubdate":
try
{
this.item.PubDate = DateTime.Parse(this.elementText.ToString());
}
catch (Exception e)
{
try {
string tmp = this.elementText.ToString();
tmp = tmp.Substring(0, tmp.Length - 5);
tmp += "GMT";
this.item.PubDate = DateTime.Parse(tmp);
}
catch
{
this.exceptions.Add(e);
}
}
break;
case "geo:lat":
try
{
this.item.GeoPoint.Lat = float.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "geo:long":
try
{
this.item.GeoPoint.Lon = float.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "georss:point":
try
{
string[] coords = this.elementText.ToString().Split(new char[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);
if (coords.Length == 2)
{
this.item.GeoPoint.Lat = float.Parse(coords[0]);
this.item.GeoPoint.Lon = float.Parse(coords[1]);
}
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
}
break;
case "channel":
switch (childElementName)
{
case "title":
this.channel.Title = this.elementText.ToString();
break;
case "link":
try
{
this.channel.Link = new Uri(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "description":
this.channel.Description = this.elementText.ToString();
break;
case "language":
this.channel.Language = this.elementText.ToString();
break;
case "copyright":
this.channel.Copyright = this.elementText.ToString();
break;
case "managingeditor":
this.channel.ManagingEditor = this.elementText.ToString();
break;
case "webmaster":
this.channel.WebMaster = this.elementText.ToString();
break;
case "rating":
this.channel.Rating = this.elementText.ToString();
break;
case "pubdate":
try
{
this.channel.PubDate = DateTime.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "lastbuilddate":
try
{
this.channel.LastBuildDate = DateTime.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "generator":
this.channel.Generator = this.elementText.ToString();
break;
case "docs":
this.channel.Docs = this.elementText.ToString();
break;
case "ttl":
try
{
this.channel.TimeToLive = int.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
}
break;
case "image":
switch (childElementName)
{
case "url":
try
{
this.image.Url = new Uri(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "title":
this.image.Title = this.elementText.ToString();
break;
case "link":
try
{
this.image.Link = new Uri(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "description":
this.image.Description = this.elementText.ToString();
break;
case "width":
try
{
this.image.Width = Byte.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
case "height":
try
{
this.image.Height = Byte.Parse(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
}
break;
case "textinput":
switch (childElementName)
{
case "title":
this.textInput.Title = this.elementText.ToString();
break;
case "description":
this.textInput.Description = this.elementText.ToString();
break;
case "name":
this.textInput.Name = this.elementText.ToString();
break;
case "link":
try
{
this.textInput.Link = new Uri(this.elementText.ToString());
}
catch (Exception e)
{
this.exceptions.Add(e);
}
break;
}
break;
case "skipdays":
if (childElementName == "day")
{
this.channel.SkipDays |= Day.Parse(this.elementText.ToString());
}
break;
case "skiphours":
if (childElementName == "hour")
{
this.channel.SkipHours |= Hour.Parse(this.elementText.ToString());
}
break;
}
break;
}
case XmlNodeType.Text:
this.elementText.Append(this.reader.Value);
break;
case XmlNodeType.CDATA:
this.elementText.Append(this.reader.Value);
break;
}
}
}while (readData);
return(rssElement);
}