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#region
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/* -----------------------------------------------------------------------
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 * <copyright file="MarshalHelpers.cs" company="GRNet">
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 * 
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 * Copyright 2011-2012 GRNET S.A. All rights reserved.
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 *
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 * Redistribution and use in source and binary forms, with or
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 * without modification, are permitted provided that the following
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 * conditions are met:
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 *
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 *   1. Redistributions of source code must retain the above
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 *      copyright notice, this list of conditions and the following
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 *      disclaimer.
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 *
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 *   2. Redistributions in binary form must reproduce the above
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 *      copyright notice, this list of conditions and the following
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 *      disclaimer in the documentation and/or other materials
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 *      provided with the distribution.
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 *
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 *
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 * THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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 * POSSIBILITY OF SUCH DAMAGE.
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 *
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 * The views and conclusions contained in the software and
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 * documentation are those of the authors and should not be
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 * interpreted as representing official policies, either expressed
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 * or implied, of GRNET S.A.
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 * </copyright>
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 * -----------------------------------------------------------------------
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 */
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#endregion
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using System;
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using System.Diagnostics.Contracts;
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using System.Runtime.InteropServices;
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using System.Text;
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namespace Pithos.ShellExtensions
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{
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    public static class MarshalHelpers
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    {
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        public static void CopyToBuffer(string input, IntPtr buffer, int bufferSize)
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        {        
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            Contract.Requires(buffer != IntPtr.Zero);
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            Contract.Requires(bufferSize >=0 );
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            var bytes = Encoding.Unicode.GetBytes(input);
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            if (bytes.Length + 2 >= bufferSize) 
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                return;
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            for (var i = 0; i < bytes.Length; i++)
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            {
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                Marshal.WriteByte(buffer, i, bytes[i]);
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            }
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            //write the null terminator "\0\0" 
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            Marshal.WriteByte(buffer, bytes.Length, 0);
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            Marshal.WriteByte(buffer, bytes.Length + 1, 0);
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        }
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    }
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}