Helpers.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / WIN_WINDOWS / lh_tools_devdiv_wpf / Windows / wcp / Speech / Src / Internal / Helpers.cs / 1 / Helpers.cs
                        

                        
                            //------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------- 

using System; 
using System.IO; 
using System.Globalization;
 
#pragma warning disable 1634, 1691 // Allows suppression of certain PreSharp messages.

namespace System.Speech.Internal
{ 
    internal static class Helpers
    { 
        //******************************************************************* 
        //
        // Internal Methods 
        //
        //*******************************************************************

        #region Internal Methods 

        // Disable parameter validation check 
#pragma warning disable 56507 

        // Throws exception if the specified Rule does not have a valid Id. 
        static internal void ThrowIfEmptyOrNull (string s, string paramName)
        {
            if (string.IsNullOrEmpty (s))
            { 
                if (s == null)
                { 
                    throw new ArgumentNullException (paramName); 
                }
                else 
                {
                    throw new ArgumentException (SR.Get (SRID.StringCanNotBeEmpty, paramName), paramName);
                }
            } 
        }
 
#pragma warning restore 56507 

        // Throws exception if the specified Rule does not have a valid Id. 
        static internal void ThrowIfNull (object value, string paramName)
        {
            if (value == null)
            { 
                throw new ArgumentNullException (paramName);
            } 
        } 

        static internal bool CompareInvariantCulture (CultureInfo culture1, CultureInfo culture2) 
        {
            // If perfect match easy
            if (culture1.Equals (culture2))
            { 
                return true;
            } 
 
            // Compare the Neutral culture
            while (!culture1.IsNeutralCulture) 
            {
                culture1 = culture1.Parent;
            }
            while (!culture2.IsNeutralCulture) 
            {
                culture2 = culture2.Parent; 
            } 
            return culture1.Equals (culture2);
        } 

        // Copy the input cfg to the output.
        // Streams point to the start of the data on entry and to the end on exit
        static internal void CopyStream (Stream inputStream, Stream outputStream, int bytesToCopy) 
        {
            // Copy using an intermediate buffer of a reasonable size. 
            int bufferSize = bytesToCopy > 4096 ? 4096 : bytesToCopy; 
            byte [] buffer = new byte [bufferSize];
            int bytesRead; 
            while (bytesToCopy > 0)
            {
                bytesRead = inputStream.Read (buffer, 0, bufferSize);
                if (bytesRead <= 0) 
                {
                    throw new EndOfStreamException (SR.Get (SRID.StreamEndedUnexpectedly)); 
                } 
                outputStream.Write (buffer, 0, bytesRead);
                bytesToCopy -= bytesRead; 
            }
        }

        // Copy the input cfg to the output. 
        // inputStream points to the start of the data on entry and to the end on exit
        static internal byte [] ReadStreamToByteArray (Stream inputStream, int bytesToCopy) 
        { 
            byte [] outputArray = new byte [bytesToCopy];
            BlockingRead (inputStream, outputArray, 0, bytesToCopy); 
            return outputArray;
        }

        static internal void BlockingRead (Stream stream, byte [] buffer, int offset, int count) 
        {
            // Stream is not like IStream - it will block until some data is available but not necessarily all of it. 
            while (count > 0) 
            {
                int read = stream.Read (buffer, offset, count); 
                if (read <= 0) // End of stream
                {
                    throw new EndOfStreamException ();
                } 
                count -= read;
                offset += read; 
            } 
        }
 

        /// 
        /// Combine 2 cultures into in a composite one and assign a keyboardLayoutId
        /// Language 
        /// `country
        ///  
        ///  
        /// 
         static internal void CombineCulture (string language, string location, CultureInfo parentCulture, int layoutId) 
        {
            CultureInfo ciLanguage = new CultureInfo (language);
            RegionInfo riLocation = new RegionInfo (location);
 
            String strNewCulture = ciLanguage.TwoLetterISOLanguageName + "-" + riLocation.TwoLetterISORegionName;
 
            CultureAndRegionInfoBuilder cb = new CultureAndRegionInfoBuilder (strNewCulture, CultureAndRegionModifiers.None); 
            cb.LoadDataFromRegionInfo (riLocation);
            cb.LoadDataFromCultureInfo (ciLanguage); 

            // Fix stuff
            cb.IetfLanguageTag = strNewCulture;
            cb.Parent = parentCulture; 

            // Need to fix the language names 
            cb.ThreeLetterISOLanguageName = ciLanguage.ThreeLetterISOLanguageName; 
            cb.TwoLetterISOLanguageName = ciLanguage.TwoLetterISOLanguageName;
            cb.ThreeLetterWindowsLanguageName = ciLanguage.ThreeLetterWindowsLanguageName; 

            // Need the Region Name in the current Language
            cb.RegionNativeName = riLocation.NativeName;
 
            // Fix the culture name(s)
            string strEnglishLanguageName = ciLanguage.EnglishName.Substring (0, ciLanguage.EnglishName.IndexOf ("(", StringComparison.Ordinal) - 1); 
            string strNativeLanguageName = ciLanguage.NativeName.Substring (0, ciLanguage.NativeName.IndexOf ("(", StringComparison.Ordinal) - 1); ; 
            cb.CultureEnglishName = strEnglishLanguageName + " (" + cb.RegionEnglishName + ")";
            cb.CultureNativeName = strNativeLanguageName + " (" + cb.RegionNativeName + ")"; 

            // Currency Name
            cb.CurrencyNativeName = riLocation.CurrencyNativeName;
 
            // Numbers
            cb.NumberFormat.PositiveInfinitySymbol = ciLanguage.NumberFormat.PositiveInfinitySymbol; 
            cb.NumberFormat.NegativeInfinitySymbol = ciLanguage.NumberFormat.NegativeInfinitySymbol; 
            cb.NumberFormat.NaNSymbol = ciLanguage.NumberFormat.NaNSymbol;
 
            // Copy Calendar Strings
            DateTimeFormatInfo dtfi = cb.GregorianDateTimeFormat;
            DateTimeFormatInfo dtfiLanguage = ciLanguage.DateTimeFormat;
            dtfiLanguage.Calendar = new GregorianCalendar (); 

            // Set the layoutId 
            cb.KeyboardLayoutId = layoutId; 

            // Copy calendar data from that gregorian localized calendar 
            dtfi.AbbreviatedDayNames = dtfiLanguage.AbbreviatedDayNames;
            dtfi.AbbreviatedMonthGenitiveNames = dtfiLanguage.AbbreviatedMonthGenitiveNames;
            dtfi.AbbreviatedMonthNames = dtfiLanguage.AbbreviatedMonthNames;
            dtfi.DayNames = dtfiLanguage.DayNames; 
            dtfi.MonthGenitiveNames = dtfiLanguage.MonthGenitiveNames;
            dtfi.MonthNames = dtfiLanguage.MonthNames; 
            dtfi.ShortestDayNames = dtfiLanguage.ShortestDayNames; 

            // Save it 
            cb.Register ();
        }

        #endregion 

        //******************************************************************** 
        // 
        // Internal fields
        // 
        //*******************************************************************

        #region Internal fields
 
        internal static readonly char [] _achTrimChars = new char [] { ' ', '\t', '\n', '\r' };
 
        // Size of a char (avoid to use the marshal class 
        internal const int _sizeOfChar = 2;
 
        #endregion

    }
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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