//
// Code generator for hash wrappers
//
// Authors:
//	Sebastien Pouliot  <sebastien@ximian.com>
//
// Copyright (C) 2008 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.
//

using System;
using System.IO;

class Program {

	static string Template = @"//
// NOTE: DO NOT EDIT - This file was automatically generated using
//	/mcs/class/System.Core/tools/hashwrap.cs
//
// System.Security.Cryptography.<className>
//
// Authors:
//	Sebastien Pouliot  <sebastien@ximian.com>
//
// Copyright (C) 2008 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.
//

#if !MOBILE

namespace System.Security.Cryptography {

	// this is a wrapper around <wrapAround>
	// see README.CNG and README.CSP for more details

	public sealed class <className> : <baseName> {

		static byte[] Empty = new byte [0];

		private <baseName> hash;

		[SecurityCritical]
		public <className> ()
		{
			// note: we don't use <baseName>.Create since CryptoConfig could, 
			// if set to use this class, result in a endless recursion
			hash = new <wrapAround> ();
		}

		[SecurityCritical]
		public override void Initialize ()
		{
			hash.Initialize ();
		}

		[SecurityCritical]
		protected override void HashCore (byte[] array, int ibStart, int cbSize)
		{
			hash.TransformBlock (array, ibStart, cbSize, null, 0);
		}

		[SecurityCritical]
		protected override byte[] HashFinal ()
		{
			hash.TransformFinalBlock (Empty, 0, 0);
			HashValue = hash.Hash;
			return HashValue;
		}

		[SecurityCritical]
		protected override void Dispose (bool disposing)
		{
			(hash as IDisposable).Dispose ();
			base.Dispose (disposing);
		}
	}
}

#endif
";

	static int Main (string [] args)
	{
		int n = (args.Length / 3);
		if ((args.Length > 0) && ((args.Length % 3) != 0)) {
			Console.WriteLine ("usage: mono hashwrap.exe className baseName wrapAround [...]");
			return 1;
		}

		int p = 0;
		for (int i = 0; i < n; i++) {
			string className = args [p++];	// e.g. MD5Cng
			string baseName = args [p++];	// e.g. MD5
			string wrapAround = args [p++];	// e.g. MD5CryptoServiceProvider

			string filename = className + ".cs";
			using (StreamWriter writer = new StreamWriter (filename)) {
				string code = Template.Replace ("<className>", className);
				code = code.Replace ("<baseName>", baseName);
				code = code.Replace ("<wrapAround>", wrapAround);
				writer.Write (code);
			}
		}

		return 0;
	}
}