private static Assembly CurrentDomain_AssemblyResolve(object sender, ResolveEventArgs args)
{
// Handle the RhinoCommon case.
if (args.Name.StartsWith("RhinoCommon", StringComparison.OrdinalIgnoreCase) &&
!args.Name.StartsWith("RhinoCommon.resources", StringComparison.OrdinalIgnoreCase))
{
return(Assembly.GetExecutingAssembly());
}
// Get the significant name of the assembly we're looking for.
string searchname = args.Name;
// Do not attempt to handle resource searching.
int index = searchname.IndexOf(".resources", StringComparison.Ordinal);
if (index > 0)
{
return(null);
}
// The resolver is commonly called multiple times with the same search name.
// Keep the results around so we don't keep doing the same job over and over
if (m_match_dictionary != null && m_match_dictionary.ContainsKey(args.Name))
{
return(m_match_dictionary[args.Name]);
}
bool probably_python = false;
index = searchname.IndexOf(',');
if (index > 0)
{
searchname = searchname.Substring(0, index);
}
else
{
// Python scripts typically just look for very short names, like "MyFunctions.dll"
if (searchname.EndsWith(".dll", StringComparison.OrdinalIgnoreCase))
{
searchname = searchname.Substring(0, searchname.Length - ".dll".Length);
}
probably_python = true;
}
// See if the assembly is already loaded.
var loaded_assemblies = AppDomain.CurrentDomain.GetAssemblies();
foreach (var loaded_assembly in loaded_assemblies)
{
if (loaded_assembly.FullName.StartsWith(searchname + ",", StringComparison.OrdinalIgnoreCase))
{
return(loaded_assembly);
}
}
List <string> potential_files = new List <string>();
// Collect all potential files in the plug-in directories.
#if RHINO_SDK
string[] plugin_folders = HostUtils.GetAssemblySearchPaths();
if (plugin_folders != null)
{
foreach (string plugin_folder in plugin_folders)
{
string[] files = Directory.GetFiles(plugin_folder, @"*.dll", SearchOption.TopDirectoryOnly); //Why TopDirectoryOnly?
if (files != null)
{
potential_files.AddRange(files);
}
files = Directory.GetFiles(plugin_folder, @"*.rhp", SearchOption.TopDirectoryOnly); //Why TopDirectoryOnly?
if (files != null)
{
potential_files.AddRange(files);
}
}
}
#endif
if (probably_python)
{
string current_dir = Directory.GetCurrentDirectory();
if (!string.IsNullOrEmpty(current_dir))
{
string[] files = Directory.GetFiles(current_dir, @"*.dll", SearchOption.TopDirectoryOnly); //Why TopDirectoryOnly?
if (files != null)
{
potential_files.AddRange(files);
}
}
}
// Collect all potential files in the custom directories.
if (m_custom_folders != null)
{
foreach (string custom_folder in m_custom_folders)
{
string[] files = Directory.GetFiles(custom_folder, @"*.dll", SearchOption.TopDirectoryOnly); //Why TopDirectoryOnly?
if (files != null)
{
potential_files.AddRange(files);
}
files = Directory.GetFiles(custom_folder, @"*.rhp", SearchOption.TopDirectoryOnly); //Why TopDirectoryOnly?
if (files != null)
{
potential_files.AddRange(files);
}
}
}
// Collect all potential files in the custom file list.
if (m_custom_files != null)
{
potential_files.AddRange(m_custom_files);
}
// Remove the already loaded assemblies from the "potential" list. We've
// already tested these.
for (int i = 0; i < loaded_assemblies.Length; i++)
{
if (loaded_assemblies[i].GlobalAssemblyCache)
{
continue;
}
if (loaded_assemblies[i].IsDynamic)
{
continue; //dynamic assemblies won't have a Location anyways.
}
try
{
// 6 Feb 2017 S. Baer (RH-35794)
// Remove loaded assemblies using filename as comparison. On systems
// where the same assembly is located in multiple search path locations
// we will start throwing exceptions when attempting to load those
// assemblies (even if they are not the ones we are looking for).
string filename = Path.GetFileName(loaded_assemblies[i].Location);
for (int j = potential_files.Count - 1; j >= 0; j--)
{
string potential_filename = Path.GetFileName(potential_files[j]);
if (string.Compare(filename, potential_filename, StringComparison.OrdinalIgnoreCase) == 0)
{
potential_files.RemoveAt(j);
}
}
}
catch { }
}
#if RHINO_SDK
// 7 Feb 2017 S. Baer (RH-30818)
// Remove native DLLs from the list of potentials
for (int i = potential_files.Count - 1; i >= 0; i--)
{
if (!HostUtils.IsManagedDll(potential_files[i]))
{
potential_files.RemoveAt(i);
}
}
#endif
// Sort all potential files based on fuzzy name matches.
FuzzyComparer fuzzy = new FuzzyComparer(searchname);
potential_files.Sort(fuzzy);
// 23 August 2012 S. Baer
// Make sure that at least part of the searchname matches part of the filename
// Just use the first 5 characters as a required pattern in the filename
const int length_match = 5;
string must_be_in_filename = searchname.Substring(0, searchname.Length > length_match ? length_match : searchname.Length);
Assembly asm = null;
foreach (string file in potential_files)
{
if (file.IndexOf(must_be_in_filename, StringComparison.InvariantCultureIgnoreCase) == -1)
{
continue;
}
asm = TryLoadAssembly(file, searchname);
if (asm != null)
{
break;
}
}
if (m_match_dictionary == null)
{
m_match_dictionary = new Dictionary <string, Assembly>();
}
if (!m_match_dictionary.ContainsKey(args.Name))
{
m_match_dictionary.Add(args.Name, asm);
}
return(asm);
}