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//
// System.Xml.XmlNameEntryCache.cs
//
// Authors:
// Atsushi Enomoto <atsushi@ximian.com>
//
// (C) 2005 Novell, Inc.
//
//
// 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;
namespace System.Xml
{
internal class XmlNameEntryCache
{
Hashtable table = new Hashtable ();
XmlNameTable nameTable;
XmlNameEntry dummy = new XmlNameEntry (String.Empty, String.Empty, String.Empty);
char [] cacheBuffer;
public XmlNameEntryCache (XmlNameTable nameTable)
{
this.nameTable = nameTable;
}
public string GetAtomizedPrefixedName (string prefix, string local)
{
if (prefix == null || prefix.Length == 0)
return local;
if (cacheBuffer == null)
cacheBuffer = new char [20];
if (cacheBuffer.Length < prefix.Length + local.Length + 1)
cacheBuffer = new char [Math.Max (
prefix.Length + local.Length + 1,
cacheBuffer.Length << 1)];
prefix.CopyTo (0, cacheBuffer, 0, prefix.Length);
cacheBuffer [prefix.Length] = ':';
local.CopyTo (0, cacheBuffer, prefix.Length + 1, local.Length);
return nameTable.Add (cacheBuffer, 0, prefix.Length + local.Length + 1);
}
public XmlNameEntry Add (string prefix, string local, string ns,
bool atomic)
{
if (!atomic) {
prefix = nameTable.Add (prefix);
local = nameTable.Add (local);
ns = nameTable.Add (ns);
}
XmlNameEntry e = GetInternal (prefix, local, ns, true);
if (e == null) {
e = new XmlNameEntry (prefix, local, ns);
table [e] = e;
}
return e;
}
public XmlNameEntry Get (string prefix, string local, string ns,
bool atomic)
{
XmlNameEntry e = GetInternal (prefix, local, ns, atomic);
return e;
}
private XmlNameEntry GetInternal (string prefix, string local,
string ns, bool atomic)
{
if (!atomic) {
if (nameTable.Get (prefix) == null ||
nameTable.Get (local) == null ||
nameTable.Get (ns) == null)
return null;
}
dummy.Update (prefix, local, ns);
return table [dummy] as XmlNameEntry;
}
}
}
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