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//
// System.Xml.XmlQualifiedName.cs
//
// Author: Duncan Mak (duncan@ximian.com)
//
// (C) Ximian, Inc.
//
// Modified:
// 21st June 2002 : Ajay kumar Dwivedi (adwiv@yahoo.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;
namespace System.Xml
{
#if NET_2_0
[Serializable]
#endif
public class XmlQualifiedName
{
// Constructors
public XmlQualifiedName ()
: this (string.Empty, string.Empty)
{
}
public XmlQualifiedName (string name)
: this (name, string.Empty)
{
}
public XmlQualifiedName (string name, string ns)
: base ()
{
this.name = (name == null) ? "" : name;
this.ns = (ns == null) ? "" : ns;
this.hash = this.name.GetHashCode () ^ this.ns.GetHashCode ();
}
// Fields
public static readonly XmlQualifiedName Empty = new XmlQualifiedName ();
private readonly string name;
private readonly string ns;
private readonly int hash;
// Properties
public bool IsEmpty
{
get {
return name.Length == 0 && ns.Length == 0;
}
}
public string Name
{
get { return name; }
}
public string Namespace
{
get { return ns; }
}
// Methods
public override bool Equals (object other)
{
return this == (other as XmlQualifiedName);
}
public override int GetHashCode ()
{
return hash;
}
public override string ToString ()
{
if (ns == string.Empty)
return name;
else
return ns + ":" + name;
}
public static string ToString (string name, string ns)
{
if (ns == string.Empty)
return name;
else
return ns + ":" + name;
}
internal static XmlQualifiedName Parse (string name, IXmlNamespaceResolver resolver)
{
return Parse (name, resolver, false);
}
internal static XmlQualifiedName Parse (string name, IXmlNamespaceResolver resolver, bool considerDefaultNamespace)
{
int index = name.IndexOf (':');
if (index < 0 && !considerDefaultNamespace)
return new XmlQualifiedName (name);
string prefix = index < 0 ? String.Empty : name.Substring (0, index);
string localName = index < 0 ? name : name.Substring (index + 1);
string ns = resolver.LookupNamespace (prefix);
if (ns == null)
throw new ArgumentException ("Invalid qualified name.");
return new XmlQualifiedName (localName, ns);
}
internal static XmlQualifiedName Parse (string name, XmlReader reader)
{
int index = name.IndexOf (':');
if (index < 0)
return new XmlQualifiedName (name);
string ns = reader.LookupNamespace (name.Substring (0, index));
if (ns == null)
throw new ArgumentException ("Invalid qualified name.");
return new XmlQualifiedName (name.Substring (index + 1), ns);
}
// Operators
public static bool operator == (XmlQualifiedName a, XmlQualifiedName b)
{
if((Object)a == (Object)b)
return true;
if((Object)a == null || (Object)b == null)
return false;
return (a.hash == b.hash) && (a.name == b.name) && (a.ns == b.ns);
}
public static bool operator != (XmlQualifiedName a, XmlQualifiedName b)
{
return !(a == b);
}
}
}
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