// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System.IO;
 
#nullable disable
 
namespace Microsoft.Build.UnitTests
{
#pragma warning disable CA2000 // It needs to keep the StreamWriter open for the return Stream/StreamReader.
    public sealed class StreamHelpers
    {
        /// <summary>
        /// Take a string and convert it to a StreamReader.
        /// </summary>
        /// <param name="value"></param>
        /// <returns></returns>
        public static StreamReader StringToStreamReader(string value)
        {
            MemoryStream m = new MemoryStream();
#if FEATURE_ENCODING_DEFAULT
            TextWriter w = new StreamWriter(m, System.Text.Encoding.Default);
#else
            TextWriter w = new StreamWriter(m, System.Text.Encoding.UTF8);
#endif
 
            w.Write(value);
            w.Flush();
            m.Seek(0, SeekOrigin.Begin);
 
            return new StreamReader(m);
        }
 
        /*
         * Method:  StringToStream (overload)
         *
         * Take a string and convert it into a Stream.
         * Use the default encoding which means this machine's ANSI codepage.
         */
        public static Stream StringToStream(string value)
        {
#if FEATURE_ENCODING_DEFAULT
            return StringToStream(value, System.Text.Encoding.Default); // We want this to be Default which is ANSI
#else
            return StringToStream(value, System.Text.Encoding.UTF8); // We want this to be Default which is ANSI
#endif
        }
 
        /*
         * Method:  StringToStream (overload)
         *
         * Take a string and convert it into a Stream.
         * Takes an alternate encoding type
         */
        public static Stream StringToStream(string value, System.Text.Encoding encoding)
        {
            MemoryStream m = new MemoryStream();
            TextWriter w = new StreamWriter(m, encoding); // HIGHCHAR: StringToStream helper accepts encoding from caller.
 
            w.Write(value);
            w.Flush();
            m.Seek(0, SeekOrigin.Begin);
            return m;
        }
    }
#pragma warning restore CA2000 // It needs to keep the StreamWriter open for the return Stream/StreamReader.
}