/// <summary>tries to parse a category collection document</summary>
/// <param name="reader"> xmlReader positioned at the start element</param>
/// <param name="owner">the base object that the collection belongs to</param>
/// <returns></returns>
public AtomCategoryCollection ParseCategories(XmlReader reader, AtomBase owner)
{
Tracing.Assert(reader != null, "reader should not be null");
if (reader == null)
{
throw new ArgumentNullException("reader");
}
AtomCategoryCollection ret = new AtomCategoryCollection();
MoveToStartElement(reader);
Tracing.TraceCall("entering Categories Parser");
object localname = reader.LocalName;
Tracing.TraceInfo("localname is: " + reader.LocalName);
if (IsCurrentNameSpace(reader, BaseNameTable.AppPublishingNamespace(owner)) &&
localname.Equals(this.nameTable.Categories))
{
Tracing.TraceInfo("Found categories document");
int depth = -1;
while (NextChildElement(reader, ref depth))
{
localname = reader.LocalName;
if (IsCurrentNameSpace(reader, BaseNameTable.NSAtom))
{
if (localname.Equals(this.nameTable.Category))
{
AtomCategory category = ParseCategory(reader, owner);
ret.Add(category);
}
}
}
}
else
{
Tracing.TraceInfo("ParseCategories called and nothing was parsed" + localname);
throw new ClientFeedException("An invalid Atom Document was passed to the parser. This was not an app:categories document: " + localname);
}
return(ret);
}
/// <summary>parses xml to fill a precreated AtomSource object (might be a feed)</summary>
/// <param name="reader">correctly positioned reader</param>
/// <param name="source">created source object to be filled</param>
/// <returns> </returns>
protected void ParseSource(XmlReader reader, AtomSource source)
{
Tracing.Assert(reader != null, "reader should not be null");
if (reader == null)
{
throw new ArgumentNullException("reader");
}
Tracing.Assert(source != null, "source should not be null");
if (source == null)
{
throw new ArgumentNullException("source");
}
Tracing.TraceCall();
int depth = -1;
ParseBasicAttributes(reader, source);
while (NextChildElement(reader, ref depth))
{
object localname = reader.LocalName;
AtomFeed feed = source as AtomFeed;
if (IsCurrentNameSpace(reader, BaseNameTable.NSAtom))
{
if (localname.Equals(this.nameTable.Title))
{
source.Title = ParseTextConstruct(reader, source);
}
else if (localname.Equals(this.nameTable.Updated))
{
source.Updated = DateTime.Parse(Utilities.DecodedValue(reader.ReadString()), CultureInfo.InvariantCulture);
}
else if (localname.Equals(this.nameTable.Link))
{
source.Links.Add(ParseLink(reader, source));
}
else if (localname.Equals(this.nameTable.Id))
{
source.Id = source.CreateAtomSubElement(reader, this) as AtomId;
ParseBaseLink(reader, source.Id);
}
else if (localname.Equals(this.nameTable.Icon))
{
source.Icon = source.CreateAtomSubElement(reader, this) as AtomIcon;
ParseBaseLink(reader, source.Icon);
}
else if (localname.Equals(this.nameTable.Logo))
{
source.Logo = source.CreateAtomSubElement(reader, this) as AtomLogo;
ParseBaseLink(reader, source.Logo);
}
else if (localname.Equals(this.nameTable.Author))
{
source.Authors.Add(ParsePerson(reader, source));
}
else if (localname.Equals(this.nameTable.Contributor))
{
source.Contributors.Add(ParsePerson(reader, source));
}
else if (localname.Equals(this.nameTable.Subtitle))
{
source.Subtitle = ParseTextConstruct(reader, source);
}
else if (localname.Equals(this.nameTable.Rights))
{
source.Rights = ParseTextConstruct(reader, source);
}
else if (localname.Equals(this.nameTable.Generator))
{
source.Generator = ParseGenerator(reader, source);
}
else if (localname.Equals(this.nameTable.Category))
{
// need to make this another colleciton
source.Categories.Add(ParseCategory(reader, source));
}
else if (feed != null && localname.Equals(this.nameTable.Entry))
{
ParseEntry(reader);
}
// this will either move the reader to the end of an element
// if at the end, to the start of a new one.
reader.Read();
}
else if (feed != null && IsCurrentNameSpace(reader, BaseNameTable.gBatchNamespace))
{
// parse the google batch extensions if they are there
ParseBatch(reader, feed);
}
else if (feed != null && IsCurrentNameSpace(reader, BaseNameTable.OpenSearchNamespace(this.versionInfo)))
{
if (localname.Equals(this.nameTable.TotalResults))
{
feed.TotalResults = int.Parse(Utilities.DecodedValue(reader.ReadString()), CultureInfo.InvariantCulture);
}
else if (localname.Equals(this.nameTable.StartIndex))
{
feed.StartIndex = int.Parse(Utilities.DecodedValue(reader.ReadString()), CultureInfo.InvariantCulture);
}
else if (localname.Equals(this.nameTable.ItemsPerPage))
{
feed.ItemsPerPage = int.Parse(Utilities.DecodedValue(reader.ReadString()), CultureInfo.InvariantCulture);
}
}
else
{
// default extension parsing.
ParseExtensionElements(reader, source);
}
}
return;
}
