/
Program.cs
executable file
·176 lines (142 loc) · 4.79 KB
/
Program.cs
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using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Reflection;
using Mono.Cecil;
using Mono.Cecil.Cil;
namespace UnityVS
{
class Program
{
private static void Main(string[] args)
{
try
{
if (args.Length == 0)
Usage();
var assets = args[0];
if (!Directory.Exists(assets))
Usage();
RegisterAssemblyResolveHook();
Run(Directory.EnumerateFiles(assets, "*.dll", SearchOption.AllDirectories).ToArray());
}
catch (Exception e)
{
Console.WriteLine("Fatal exception: {0}", e);
}
}
private static void Usage()
{
Console.WriteLine("ureglog Assets");
Environment.Exit(1);
}
private static void Run(string[] assemblies)
{
var resolver = AssemblyResolverFor(assemblies);
foreach (var assembly in assemblies.Where(a => !Path.GetFileName(a).Contains("SyntaxTree.VisualStudio.Unity")))
TryPatchAssembly(assembly, resolver);
}
private static IAssemblyResolver AssemblyResolverFor(IEnumerable<string> assemblies)
{
var resolver = new DefaultAssemblyResolver();
foreach (var directory in assemblies.Select(a => Path.GetFullPath(Path.GetDirectoryName(a))).ToHashSet())
resolver.AddSearchDirectory(directory);
return resolver;
}
private static void TryPatchAssembly(string assembly, IAssemblyResolver resolver)
{
var bridge = SafeResolveBridge(resolver);
if (bridge == null)
throw new InvalidOperationException("The UnityVS package can not be found in the Assets folder.");
var module = SafeReadModule(assembly, resolver);
if (module == null)
return;
var calls = (from t in module.GetTypes()
from m in t.Methods
where m.HasBody
from i in m.Body.Instructions
where IsRegisterLogCallbackCall(i)
select new { Method = m, Instruction = i }).ToArray();
if (calls.Length == 0)
return;
foreach (var call in calls.ToArray())
PatchRegisterLogCallbackCall(call.Method, call.Instruction, bridge);
module.Write(assembly);
Console.WriteLine("Successfully patched {0}", assembly);
}
private static AssemblyDefinition SafeResolveBridge(IAssemblyResolver resolver)
{
try
{
return resolver.Resolve("SyntaxTree.VisualStudio.Unity.Bridge", new ReaderParameters { AssemblyResolver = resolver });
}
catch (AssemblyResolutionException)
{
return null;
}
}
private static void PatchRegisterLogCallbackCall(MethodDefinition method, Instruction instruction, AssemblyDefinition bridge)
{
// replace
// Application.RegisterLogCallback(callback)
// by
// VisualStudioIntegration.LogCallback = (Application.LogCallback) Delegate.Combine(callback, VisualStudioIntegration.LogCallback);
var il = method.Body.GetILProcessor();
var module = method.Module;
var vsi = bridge.MainModule.GetType("SyntaxTree.VisualStudio.Unity.Bridge.VisualStudioIntegration");
var lcb = vsi.Fields.Single(f => f.Name == "LogCallback");
var corlib = module.AssemblyResolver.Resolve((AssemblyNameReference) module.TypeSystem.Corlib);
var dlg = corlib.MainModule.GetType("System.Delegate");
var combine = dlg.Methods.Single(m => m.Name == "Combine" && m.Parameters.Count == 2);
il.InsertBefore(instruction, il.Create(OpCodes.Ldsfld, module.Import(lcb)));
foreach (var i in new[]
{
il.Create(OpCodes.Call, module.Import(combine)),
il.Create(OpCodes.Castclass, module.Import(lcb.FieldType)),
il.Create(OpCodes.Stsfld, module.Import(lcb)),
})
{
il.InsertBefore(instruction, i);
}
il.Remove(instruction);
}
private static bool IsRegisterLogCallbackCall(Instruction instruction)
{
if (instruction.OpCode != OpCodes.Call)
return false;
var method = instruction.Operand as MethodReference;
if (method == null)
return false;
if (method.Name != "RegisterLogCallback")
return false;
if (method.DeclaringType.FullName != "UnityEngine.Application")
return false;
return true;
}
private static ModuleDefinition SafeReadModule(string assembly, IAssemblyResolver resolver)
{
try
{
return ModuleDefinition.ReadModule(assembly, new ReaderParameters { AssemblyResolver = resolver });
}
catch (Exception)
{
return null;
}
}
private static void RegisterAssemblyResolveHook()
{
AppDomain.CurrentDomain.AssemblyResolve += (sender, args) =>
{
var name = new AssemblyName(args.Name);
var stream = Assembly.GetExecutingAssembly().GetManifestResourceStream(name.Name);
if (stream == null)
return null;
var memory = new MemoryStream((int) stream.Length);
stream.WriteTo(memory);
return Assembly.Load(memory.ToArray());
};
}
}
}