ServiceDocument.cs :  » 2.6.4-mono-.net-core » System.ServiceModel » System » ServiceModel » Syndication » C# / CSharp Open Source

//
// ServiceDocument.cs
//
// Author:
//  Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2009 Novell, Inc.  http://www.novell.com
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.IO;
using System.ServiceModel;
using System.ServiceModel.Channels;
using System.Xml;

namespace System.ServiceModel.Syndication{
  public class ServiceDocument
  {
    public static TServiceDocument Load<TServiceDocument> (XmlReader reader)
      where TServiceDocument : ServiceDocument, new()
    {
      var doc = new TServiceDocument ();
      new AtomPub10ServiceDocumentFormatter<TServiceDocument> (doc).ReadFrom (reader);
      return doc;
    }

    public static ServiceDocument Load (XmlReader reader)
    {
      return Load<ServiceDocument> (reader);
    }


    public ServiceDocument ()
    {
      Workspaces = new Collection<Workspace> ();
    }

    public ServiceDocument (IEnumerable<Workspace> workspaces)
      : this ()
    {
      if (workspaces != null)
        foreach (var w in workspaces)
          Workspaces.Add (w);
    }

    ServiceDocumentFormatter formatter;
    SyndicationExtensions extensions = new SyndicationExtensions ();

    internal ServiceDocumentFormatter InternalFormatter {
      set { formatter = value; }
    }

    public Dictionary<XmlQualifiedName, string> AttributeExtensions {
      get { return extensions.Attributes; }
    }

    public Uri BaseUri { get; set; }

    public SyndicationElementExtensionCollection ElementExtensions {
      get { return extensions.Elements; }
    }

    public string Language { get; set; }

    public Collection<Workspace> Workspaces { get; private set; }


    protected internal virtual Workspace CreateWorkspace ()
    {
      return new Workspace ();
    }

    public ServiceDocumentFormatter GetFormatter ()
    {
      if (formatter == null)
        formatter = new AtomPub10ServiceDocumentFormatter (this);
      return formatter;
    }

    public void Save (XmlWriter writer)
    {
      GetFormatter ().WriteTo (writer);
    }

    protected internal virtual bool TryParseAttribute (string name, string ns, string value, string version)
    {
      if (version != "http://www.w3.org/2007/app")
        return false;

      switch (ns) {
      case "http://www.w3.org/XML/1998/namespace":
        switch (name) {
        case "base":
          BaseUri = new Uri (value, UriKind.RelativeOrAbsolute);
          return true;
        case "lang":
          Language = value;
          return true;
        }
        return false;
      }
      return false;
    }

    protected internal virtual bool TryParseElement (XmlReader reader, string version)
    {
      if (reader == null)
        throw new ArgumentNullException ("reader");

      reader.MoveToContent ();

      if (reader.LocalName != "service" || reader.NamespaceURI != version)
        return false;

      for (int i = 0; i < reader.AttributeCount; i++) {
        reader.MoveToAttribute (i);
        if (!TryParseAttribute (reader.LocalName, reader.NamespaceURI, reader.Value, version))
          AttributeExtensions.Add (new XmlQualifiedName (reader.LocalName, reader.NamespaceURI), reader.Value);
      }
      reader.MoveToElement ();

      if (reader.IsEmptyElement)
        throw new XmlException ("AtomPP service element requires at least one workspace element");

      reader.ReadStartElement ();

      for (reader.MoveToContent (); reader.NodeType != XmlNodeType.EndElement; reader.MoveToContent ()) {
        if (reader.LocalName == "workspace" && reader.NamespaceURI == version) {
          var ws = CreateWorkspace ();
          if (ws.TryParseElement (reader, version)) {
            Workspaces.Add (ws);
            continue;
          }
        }
        ElementExtensions.Add (new SyndicationElementExtension (reader));
      }

      reader.ReadEndElement ();

      return true;
    }

    protected internal virtual void WriteAttributeExtensions (XmlWriter writer, string version)
    {
      extensions.WriteAttributeExtensions (writer, version);
    }

    protected internal virtual void WriteElementExtensions (XmlWriter writer, string version)
    {
      extensions.WriteElementExtensions (writer, version);
    }
  }
}