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//
// System.Globalization.SortKey.cs
//
// Author:
// Atsushi Enomoto <atsushi@ximian.com>
//
// Copyright (C) 2005 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.
//
//
// This file works with our managed collation implementation.
//
using System;
using System.IO;
using System.Globalization;
using System.Runtime.InteropServices;
namespace System.Globalization
{
[System.Runtime.InteropServices.ComVisible (true)]
[Serializable]
[StructLayout (LayoutKind.Sequential)]
public class SortKey
{
#region Static members
public static int Compare (SortKey sortkey1, SortKey sortkey2)
{
if (sortkey1 == null)
throw new ArgumentNullException ("sortkey1");
if (sortkey2 == null)
throw new ArgumentNullException ("sortkey2");
if (Object.ReferenceEquals (sortkey1, sortkey2)
|| Object.ReferenceEquals (sortkey1.OriginalString,
sortkey2.OriginalString))
return 0;
byte [] d1 = sortkey1.KeyData;
byte [] d2 = sortkey2.KeyData;
int len = d1.Length > d2.Length ? d2.Length : d1.Length;
for (int i = 0; i < len; i++)
if (d1 [i] != d2 [i])
return d1 [i] < d2 [i] ? -1 : 1;
return d1.Length == d2.Length ? 0 : d1.Length < d2.Length ? -1 : 1;
}
#endregion
readonly string source;
readonly byte [] key;
readonly CompareOptions options;
readonly int lcid;
// for legacy unmanaged one
internal SortKey (int lcid, string source, CompareOptions opt)
{
this.lcid = lcid;
this.source = source;
this.options = opt;
var source_length = source.Length;
var k = new byte [source_length];
for (int i = 0; i < source_length; ++i)
k [i] = (byte)source [i];
this.key = k;
}
internal SortKey (int lcid, string source, byte [] buffer, CompareOptions opt,
int lv1Length, int lv2Length, int lv3Length,
int kanaSmallLength, int markTypeLength,
int katakanaLength, int kanaWidthLength,
int identLength)
{
this.lcid = lcid;
this.source = source;
this.key = buffer;
this.options = opt;
}
internal SortKey (String localeName, String str, CompareOptions options, byte[] keyData)
{
throw new NotImplementedException ();
}
public virtual string OriginalString {
get { return source; }
}
public virtual byte [] KeyData {
get { return key; }
}
// copy from original SortKey.cs
public override bool Equals (object value)
{
SortKey other = (value as SortKey);
if (other != null) {
if ((this.lcid == other.lcid) &&
(this.options == other.options) &&
(Compare (this, other) == 0)) {
return true;
}
}
return false;
}
public override int GetHashCode ()
{
if (key.Length == 0)
return 0; // should not happen though.
int val = key [0];
for (int i = 1; i < key.Length; i++)
val ^= (int) key [i] << (i & 3);
return (int) val;
}
// copy from original SortKey.cs
public override string ToString()
{
return "SortKey - " + lcid + ", " + options + ", " + source;
}
}
}
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