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// **********************************************************************
//
// Copyright (c) 2003-2016 ZeroC, Inc. All rights reserved.
//
// This copy of Ice is licensed to you under the terms described in the
// ICE_LICENSE file included in this distribution.
//
// **********************************************************************
namespace IceInternal
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Reflection;
public sealed class AssemblyUtil
{
public enum Runtime { DotNET, Mono };
public enum Platform { Windows, NonWindows };
static AssemblyUtil()
{
PlatformID id = Environment.OSVersion.Platform;
if( id == PlatformID.Win32NT
|| id == PlatformID.Win32S
|| id == PlatformID.Win32Windows
|| id == PlatformID.WinCE)
{
platform_ = Platform.Windows;
}
else
{
platform_ = Platform.NonWindows;
}
if(System.Type.GetType("Mono.Runtime") != null)
{
runtime_ = Runtime.Mono;
}
else
{
runtime_ = Runtime.DotNET;
}
System.Version v = System.Environment.Version;
runtimeMajor_ = v.Major;
runtimeMinor_ = v.Minor;
runtimeBuild_ = v.Build;
runtimeRevision_ = v.Revision;
v = System.Environment.OSVersion.Version;
osx_ = false;
if (platform_ == Platform.NonWindows)
{
try
{
Assembly a = Assembly.Load(
"Mono.Posix, Version=2.0.0.0, Culture=neutral, PublicKeyToken=0738eb9f132ed756");
Type syscall = a.GetType("Mono.Unix.Native.Syscall");
if(syscall != null)
{
MethodInfo method = syscall.GetMethod("uname", BindingFlags.Static | BindingFlags.Public);
if(method != null)
{
object[] p = new object[1];
method.Invoke(null, p);
if(p[0] != null)
{
Type utsname = a.GetType("Mono.Unix.Native.Utsname");
osx_ = ((string)utsname.GetField("sysname").GetValue(p[0])).Equals("Darwin");
}
}
}
}
catch(System.Exception)
{
}
}
}
public static Type findType(Instance instance, string csharpId)
{
lock(_mutex)
{
Type t;
if (_typeTable.TryGetValue(csharpId, out t))
{
return t;
}
loadAssemblies(); // Lazy initialization
foreach (Assembly a in _loadedAssemblies.Values)
{
if((t = a.GetType(csharpId)) != null)
{
_typeTable[csharpId] = t;
return t;
}
}
}
return null;
}
public static Type[] findTypesWithPrefix(string prefix)
{
LinkedList<Type> l = new LinkedList<Type>();
lock(_mutex)
{
loadAssemblies(); // Lazy initialization
foreach(Assembly a in _loadedAssemblies.Values)
{
Type[] types = a.GetTypes();
foreach(Type t in types)
{
if(t.AssemblyQualifiedName.IndexOf(prefix, StringComparison.Ordinal) == 0)
{
l.AddLast(t);
}
}
}
}
Type[] result = new Type[l.Count];
if(l.Count > 0)
{
l.CopyTo(result, 0);
}
return result;
}
public static object createInstance(Type t)
{
try
{
return Activator.CreateInstance(t);
}
catch(MemberAccessException)
{
return null;
}
}
//
// Make sure that all assemblies that are referenced by this process
// are actually loaded. This is necessary so we can use reflection
// on any type in any assembly because the type we are after will
// most likely not be in the current assembly and, worse, may be
// in an assembly that has not been loaded yet. (Type.GetType()
// is no good because it looks only in the calling object's assembly
// and mscorlib.dll.)
//
private static void loadAssemblies()
{
Assembly[] assemblies = AppDomain.CurrentDomain.GetAssemblies();
List<Assembly> newAssemblies = null;
foreach(Assembly a in assemblies)
{
if(!_loadedAssemblies.Contains(a.FullName))
{
if(newAssemblies == null)
{
newAssemblies = new List<Assembly>();
}
newAssemblies.Add(a);
_loadedAssemblies[a.FullName] = a;
}
}
if(newAssemblies != null)
{
foreach(Assembly a in newAssemblies)
{
loadReferencedAssemblies(a);
}
}
}
private static void loadReferencedAssemblies(Assembly a)
{
AssemblyName[] names = a.GetReferencedAssemblies();
foreach(AssemblyName name in names)
{
if(!_loadedAssemblies.ContainsKey(name.FullName))
{
try
{
Assembly ra = Assembly.Load(name);
//
// The value of name.FullName may not match that of ra.FullName, so
// we record the assembly using both keys.
//
_loadedAssemblies[name.FullName] = ra;
_loadedAssemblies[ra.FullName] = ra;
loadReferencedAssemblies(ra);
}
catch(System.Exception)
{
// Ignore assemblies that cannot be loaded.
}
}
}
}
private static Hashtable _loadedAssemblies = new Hashtable(); // <string, Assembly> pairs.
private static Dictionary<string, Type> _typeTable = new Dictionary<string, Type>(); // <type name, Type> pairs.
private static object _mutex = new object();
public readonly static Runtime runtime_; // Either DotNET or Mono
//
// Versioning is: Major.Minor.Build.Revision. (Yes, really. It is not Major.Minor.Revision.Build, as
// one might expect.) If a part of a version number (such as revision) is not defined, it is -1.
//
public readonly static int runtimeMajor_;
public readonly static int runtimeMinor_;
public readonly static int runtimeBuild_;
public readonly static int runtimeRevision_;
public readonly static Platform platform_;
public readonly static bool osx_;
}
}
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