protected static bool TryParseRsdResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
XmlNamespaceManager manager = null;
Guard.ArgumentNotNull(resource, "resource");
manager = new XmlNamespaceManager(resource.NameTable);
manager.AddNamespace("rsd", "http://archipelago.phrasewise.com/rsd");
version = null;
if ((navigator = resource.SelectSingleNode("rsd", manager)) != null || (navigator = resource.SelectSingleNode("rsd:rsd", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
if (namespaces.ContainsValue("http://archipelago.phrasewise.com/rsd"))
{
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(1, 0);
}
}
else if (String.Compare(navigator.Name, "rsd", StringComparison.OrdinalIgnoreCase) == 0 && version != null)
{
// Most web log software actually fails to provide the default XML namespace per RSD spec, so this is a hack/compromise
resourceConformsToFormat = true;
}
}
return(resourceConformsToFormat);
}
protected static bool TryParseOpenSearchDescriptionResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
XmlNamespaceManager manager = null;
Guard.ArgumentNotNull(resource, "resource");
manager = new XmlNamespaceManager(resource.NameTable);
manager.AddNamespace("search", "http://a9.com/-/spec/opensearch/1.1/");
version = null;
if ((navigator = resource.SelectSingleNode("OpenSearchDescription", manager)) != null || (navigator = resource.SelectSingleNode("search:OpenSearchDescription", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
if (namespaces.ContainsValue("http://a9.com/-/spec/opensearch/1.1/"))
{
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(1, 1);
}
}
}
return(resourceConformsToFormat);
}
protected static bool TryParseMicroSummaryGeneratorResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
XmlNamespaceManager manager = null;
Guard.ArgumentNotNull(resource, "resource");
manager = new XmlNamespaceManager(resource.NameTable);
manager.AddNamespace("micro", "http://www.mozilla.org/microsummaries/0.1");
version = null;
if ((navigator = resource.SelectSingleNode("generator", manager)) != null || (navigator = resource.SelectSingleNode("micro:generator", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
if (namespaces.ContainsValue("http://www.mozilla.org/microsummaries/0.1"))
{
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(0, 1);
}
}
}
return(resourceConformsToFormat);
}
protected static bool TryParseBlogMLResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
XmlNamespaceManager manager = null;
Guard.ArgumentNotNull(resource, "resource");
manager = new XmlNamespaceManager(resource.NameTable);
manager.AddNamespace("blogML", "http://www.blogml.com/2006/09/BlogML");
version = null;
if ((navigator = resource.SelectSingleNode("blog", manager)) != null || (navigator = resource.SelectSingleNode("blogML:blog", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
if (namespaces.ContainsValue("http://www.blogml.com/2006/09/BlogML"))
{
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(2, 0);
}
}
}
return(resourceConformsToFormat);
}
protected static bool TryParseAtomPublishingServiceResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
XmlNamespaceManager manager = null;
Guard.ArgumentNotNull(resource, "resource");
manager = new XmlNamespaceManager(resource.NameTable);
manager.AddNamespace("atom", "http://www.w3.org/2005/Atom");
manager.AddNamespace("atom03", "http://purl.org/atom/ns#");
manager.AddNamespace("app", "http://www.w3.org/2007/app");
version = null;
if ((navigator = resource.SelectSingleNode("service", manager)) != null || (navigator = resource.SelectSingleNode("app:service", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
if (namespaces.ContainsValue("http://www.w3.org/2007/app"))
{
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(1, 0);
}
}
}
return(resourceConformsToFormat);
}
protected static bool TryParseRssResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
XmlNamespaceManager manager = null;
Guard.ArgumentNotNull(resource, "resource");
manager = new XmlNamespaceManager(resource.NameTable);
manager.AddNamespace("rdf", "http://www.w3.org/1999/02/22-rdf-syntax-ns#");
manager.AddNamespace("rss09", "http://my.netscape.com/rdf/simple/0.9/");
manager.AddNamespace("rss10", "http://purl.org/rss/1.0/");
version = null;
if ((navigator = resource.SelectSingleNode("rss", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(2, 0);
}
}
else if ((navigator = resource.SelectSingleNode("rdf:RDF", manager)) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
Dictionary <string, string> namespaces = (Dictionary <string, string>)navigator.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
if (namespaces.ContainsValue("http://purl.org/rss/1.0/"))
{
resourceConformsToFormat = true;
version = new Version(1, 0);
}
else if (namespaces.ContainsValue("http://my.netscape.com/rdf/simple/0.9/"))
{
resourceConformsToFormat = true;
version = new Version(0, 9);
}
}
return(resourceConformsToFormat);
}
protected static bool TryParseOpmlResource(XPathNavigator resource, out XPathNavigator navigator, out Version version)
{
bool resourceConformsToFormat = false;
Guard.ArgumentNotNull(resource, "resource");
version = null;
if ((navigator = resource.SelectSingleNode("opml")) != null)
{
version = SyndicationResourceMetadata.GetVersionFromAttribute(navigator, "version");
resourceConformsToFormat = true;
if (version == null)
{
version = new Version(2, 0);
}
}
return(resourceConformsToFormat);
}
/// <summary>
/// Extracts the content format, version, and XML namespaces for a syndication resource from the supplied <see cref="XPathNavigator"/>.
/// </summary>
/// <param name="resource">The <see cref="XPathNavigator"/> to extract the syndication resource meta-data from.</param>
/// <exception cref="ArgumentNullException">The <paramref name="resource"/> is a null reference (Nothing in Visual Basic).</exception>
private void Load(XPathNavigator resource)
{
XPathNavigator navigator = null;
Version version = null;
Guard.ArgumentNotNull(resource, "resource");
Dictionary <string, string> namespaces = (Dictionary <string, string>)resource.GetNamespacesInScope(XmlNamespaceScope.ExcludeXml);
foreach (string prefix in namespaces.Keys)
{
resourceNamespaces.Add(prefix, namespaces[prefix]);
}
resourceVersion = SyndicationResourceMetadata.GetVersionFromAttribute(resource, "version");
if (SyndicationResourceMetadata.TryParseApmlResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.Apml;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseAtomResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.Atom;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseAtomPublishingCategoriesResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.AtomCategoryDocument;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseAtomPublishingServiceResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.AtomServiceDocument;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseBlogMLResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.BlogML;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseMicroSummaryGeneratorResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.MicroSummaryGenerator;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseNewsMLResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.NewsML;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseOpenSearchDescriptionResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.OpenSearchDescription;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseOpmlResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.Opml;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseRsdResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.Rsd;
resourceRootNode = navigator;
resourceVersion = version;
}
else if (SyndicationResourceMetadata.TryParseRssResource(resource, out navigator, out version))
{
resourceFormat = SyndicationContentFormat.Rss;
resourceRootNode = navigator;
resourceVersion = version;
}
else
{
resourceFormat = SyndicationContentFormat.None;
resourceRootNode = null;
resourceVersion = null;
}
}
