// This file is part of DotNetToJScript - A tool to generate a

// JScript which bootstraps an arbitrary v2.NET Assembly and class.

// Copyright (C) James Forshaw 2017

//

// DotNetToJScript is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// DotNetToJScript is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

// GNU General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with DotNetToJScript. If not, see <http://www.gnu.org/licenses/>.

using System;

using System.Linq;

using System.Text;

namespace DotNetToJScript

{

class JScriptGenerator : IScriptGenerator

{

static string GetScriptHeader(RuntimeVersion version, bool enable_debug)

{

StringBuilder builder = new StringBuilder();

builder.AppendLine("function setversion() {");

switch (version)

{

case RuntimeVersion.Auto:

builder.AppendLine(Properties.Resources.jscript_auto_version_script);

break;

case RuntimeVersion.v2:

builder.AppendLine("new ActiveXObject('WScript.Shell').Environment('Process')('COMPLUS_Version') = 'v2.0.50727';");

break;

case RuntimeVersion.v4:

builder.AppendLine("new ActiveXObject('WScript.Shell').Environment('Process')('COMPLUS_Version') = 'v4.0.30319';");

break;

}

builder.AppendLine("}");

builder.Append("function debug(s) {");

if (enable_debug)

{

builder.Append("WScript.Echo(s);");

}

builder.AppendLine("}");

return builder.ToString();

}

public string ScriptName

{

get

{

return "JScript";

}

}

public bool SupportsScriptlet

{

get

{

return true;

}

}

public static string[] BinToBase64Lines(byte[] serialized_object)

{

int ofs = serialized_object.Length % 3;

if (ofs != 0)

{

int length = serialized_object.Length + (3 - ofs);

Array.Resize(ref serialized_object, length);

}

string base64 = Convert.ToBase64String(serialized_object, Base64FormattingOptions.InsertLineBreaks);

return base64.Split(new string[] { Environment.NewLine }, StringSplitOptions.None).Select(s => String.Format("\"{0}\"", s)).ToArray();

}

public string GenerateScript(byte[] serialized_object, string entry_class_name, string additional_script, RuntimeVersion version, bool enable_debug)

{

string[] lines = BinToBase64Lines(serialized_object);

return GetScriptHeader(version, enable_debug)

+ Properties.Resources.jscript_template.Replace("%SERIALIZED%", String.Join("+"+Environment.NewLine, lines)).Replace("%CLASS%", entry_class_name).Replace("%ADDEDSCRIPT%", additional_script);

}

}

}