/*

Copyright 2017 YANG Huan (sy.yanghuan@gmail.com).

Licensed under the Apache License, Version 2.0 (the "License");

you may not use this file except in compliance with the License.

You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software

distributed under the License is distributed on an "AS IS" BASIS,

WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

See the License for the specific language governing permissions and

limitations under the License.

*/

using System;

using System.Collections.Generic;

using System.Diagnostics;

using System.Diagnostics.Contracts;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

namespace CSharpLua {

class Program {

private const string kHelpCmdString = @"Usage: CSharp.lua [-s srcfolder] [-d dstfolder]

Arguments

-s : can be a directory where all cs files will be compiled, or a list of files, using ';' or ',' to separate

-d : destination directory, will put the out lua files

Options

-h : show the help message and exit

-l : libraries referenced, use ';' to separate

if the library is a module, which is compiled by CSharp.lua with -module argument, the last character needs to be '!' in order to mark

-m : meta files, like System.xml, use ';' to separate

-csc : csc.exe command arguments, use ' ' or '\t' to separate

-c : support classic lua version(5.1), default support 5.3

-a : attributes need to export, use ';' to separate, if ""-a"" only, all attributes will be exported

-e : enums need to export, use ';' to separate, if ""-e"" only, all enums will be exported

-p : do not use debug.setmetatable, in some Addon/Plugin environment debug object cannot be used

-metadata : export all metadata, use @CSharpLua.Metadata annotations for precise control

-module : the currently compiled assembly needs to be referenced, it's useful for multiple module compiled

-inline-property: inline some single-line properties

";

public static void Main(string[] args) {

if (args.Length > 0) {

try {

var cmds = Utility.GetCommandLines(args);

if (cmds.ContainsKey("-h")) {

ShowHelpInfo();

return;

}

var sw = new Stopwatch();

sw.Start();

string input = cmds.GetArgument("-s");

string output = cmds.GetArgument("-d");

string lib = cmds.GetArgument("-l", true);

string meta = cmds.GetArgument("-m", true);

bool isClassic = cmds.ContainsKey("-c");

string atts = cmds.GetArgument("-a", true);

if (atts == null && cmds.ContainsKey("-a")) {

atts = string.Empty;

}

string enums = cmds.GetArgument("-e", true);

if (enums == null && cmds.ContainsKey("-e")) {

enums = string.Empty;

}

string csc = GetCSCArgument(args);

bool isPreventDebugObject = cmds.ContainsKey("-p");

bool isExportMetadata = cmds.ContainsKey("-metadata");

bool isModule = cmds.ContainsKey("-module");

bool isInlineSimpleProperty = cmds.ContainsKey("-inline-property");

Compiler c = new Compiler(input, output, lib, meta, csc, isClassic, atts, enums) {

IsExportMetadata = isExportMetadata,

IsModule = isModule,

IsInlineSimpleProperty = isInlineSimpleProperty,

IsPreventDebugObject = isPreventDebugObject,

};

c.Compile();

Console.WriteLine($"Compiled Success, cost {sw.Elapsed.TotalSeconds}s");

} catch (CmdArgumentException e) {

Console.Error.WriteLine(e.Message);

ShowHelpInfo();

Environment.ExitCode = -1;

} catch (CompilationErrorException e) {

Console.Error.WriteLine(e.Message);

Environment.ExitCode = -1;

} catch (Exception e) {

Console.Error.WriteLine(e.ToString());

Environment.ExitCode = -1;

}

} else {

ShowHelpInfo();

Environment.ExitCode = -1;

}

}

private static void ShowHelpInfo() {

Console.Error.WriteLine(kHelpCmdString);

}

private static HashSet<string> arguments_;

private static bool IsArgumentKey(string key) {

if (arguments_ == null) {

arguments_ = new HashSet<string>();

string[] lines = kHelpCmdString.Split(new string[] { "\r\n", "\n", "\r" }, StringSplitOptions.RemoveEmptyEntries);

foreach (string line in lines) {

if (line.StartsWith('-')) {

char[] chars = line.TakeWhile(i => !char.IsWhiteSpace(i)).ToArray();

arguments_.Add(new string(chars));

}

}

}

return arguments_.Contains(key);

}

private static string GetCSCArgument(string[] args) {

int index = args.IndexOf("-csc");

if (index != -1) {

var remains = args.Skip(index + 1);

int end = remains.IndexOf(IsArgumentKey);

if (end != -1) {

remains = remains.Take(end);

}

return string.Join(" ", remains);

}

return null;

}

}

}