SortKey.cs source code in C# .NET

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Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / clr / src / BCL / System / Globalization / SortKey.cs / 1305376 / SortKey.cs
                        

                        
                            // ==++== 
//
//   Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ==--== 
////////////////////////////////////////////////////////////////////////////
// 
//  Class:    SortKey 
//
//  Purpose:  This class implements a set of methods for retrieving 
//            sort key information.
//
//  Date:     August 12, 1998
// 
////////////////////////////////////////////////////////////////////////////
 
namespace System.Globalization { 

    using System; 
    using System.Runtime.CompilerServices;
    using System.Runtime.Serialization;
    using System.Diagnostics.Contracts;
 
[System.Runtime.InteropServices.ComVisible(true)]
    [Serializable] public class SortKey 
    { 
        //--------------------------------------------------------------------//
        //                        Internal Information                        // 
        //-------------------------------------------------------------------//

        //
        //  Variables. 
        //
        // 
 
        [OptionalField(VersionAdded = 3)]
        internal String localeName;       // locale identifier 

        [OptionalField(VersionAdded = 1)] // LCID field so serialization is Whidbey compatible though we don't officially support it
        internal int win32LCID;           //
                                          // Whidbey serialization 

        internal CompareOptions options;  // options 
        internal String m_String;         // original string 
        internal byte[] m_KeyData;        // sortkey data
 
#if !FEATURE_PAL
        //
        // The following constructor is designed to be called from CompareInfo to get the
        // the sort key of specific string for synthetic culture 
        //
        internal SortKey(String localeName, String str, CompareOptions options, byte[] keyData) 
        { 
            this.m_KeyData = keyData;
            this.localeName = localeName; 
            this.options    = options;
            this.m_String   = str;
        }
 
#endif // !FEATURE_PAL
 
#if FEATURE_USE_LCID 
        //
        // 


        [OnSerializing]
        private void OnSerializing(StreamingContext context) 
        {
            //set LCID to proper value for Whidbey serialization (no other use) 
            if (win32LCID == 0) 
            {
                win32LCID = CultureInfo.GetCultureInfo(localeName).LCID; 
            }
        }

        // 
        //
 
 
        [OnDeserialized]
        private void OnDeserialized(StreamingContext context) 
        {
            //set locale name to proper value after Whidbey deserialization
            if (String.IsNullOrEmpty(localeName) && win32LCID != 0)
            { 
                localeName = CultureInfo.GetCultureInfo(win32LCID).Name;
            } 
        } 
#endif //FEATURE_USE_LCID
 
        ////////////////////////////////////////////////////////////////////////
        //
        //  GetOriginalString
        // 
        //  Returns the original string used to create the current instance
        //  of SortKey. 
        // 
        ////////////////////////////////////////////////////////////////////////
        public virtual String OriginalString 
        {
            get {
                return (m_String);
            } 
        }
 
 
        ////////////////////////////////////////////////////////////////////////
        // 
        //  GetKeyData
        //
        //  Returns a byte array representing the current instance of the
        //  sort key. 
        //
        //////////////////////////////////////////////////////////////////////// 
        public virtual byte[] KeyData 
        {
            get { 
                return (byte[])(m_KeyData.Clone());
            }
        }
 

        //////////////////////////////////////////////////////////////////////// 
        // 
        //  Compare
        // 
        //  Compares the two sort keys.  Returns 0 if the two sort keys are
        //  equal, a number less than 0 if sortkey1 is less than sortkey2,
        //  and a number greater than 0 if sortkey1 is greater than sortkey2.
        // 
        ////////////////////////////////////////////////////////////////////////
        public static int Compare(SortKey sortkey1, SortKey sortkey2) { 
 
            if (sortkey1==null || sortkey2==null) {
                throw new ArgumentNullException((sortkey1==null ? "sortkey1": "sortkey2")); 
            }
            Contract.EndContractBlock();

            byte[] key1Data = sortkey1.m_KeyData; 
            byte[] key2Data = sortkey2.m_KeyData;
 
            Contract.Assert(key1Data!=null, "key1Data!=null"); 
            Contract.Assert(key2Data!=null, "key2Data!=null");
 
            if (key1Data.Length == 0) {
                if (key2Data.Length == 0) {
                    return (0);
                } 
                return (-1);
            } 
            if (key2Data.Length == 0) { 
                return (1);
            } 

            int compLen = (key1Data.Lengthkey2Data[i]) {
                    return (1); 
                } 
                if (key1Data[i]

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