static int Fix(ApplePlatform platform, string output)
{
var frameworks = Frameworks.GetFrameworks(platform, false).Values.Where(v => !v.Unavailable);
var sb = new StringBuilder();
#if NET
sb.AppendLine("#if NET");
#else
sb.AppendLine("#if !NET");
#endif
sb.AppendLine("namespace ObjCRuntime {");
sb.AppendLine("\tpublic static partial class Constants {");
foreach (var grouped in frameworks.GroupBy(v => v.Version))
{
sb.AppendLine($"\t\t// {platform} {grouped.Key}");
foreach (var fw in grouped.OrderBy(v => v.Name))
{
sb.AppendLine($"\t\tpublic const string {fw.Namespace}Library = \"{fw.LibraryPath}\";");
}
sb.AppendLine();
}
sb.AppendLine("\t}");
sb.AppendLine("}");
#if NET
sb.AppendLine("#endif // NET");
#else
sb.AppendLine("#endif // !NET");
#endif
File.WriteAllText(output, sb.ToString());
return(0);
}
public void Process(LinkContext context)
{
var profile = (Profile.Current as BaseProfile);
AssemblyDefinition assembly;
if (!context.TryGetLinkedAssembly(profile.ProductAssembly, out assembly))
{
return;
}
HashSet <string> namespaces = new HashSet <string> ();
foreach (TypeDefinition type in assembly.MainModule.Types)
{
namespaces.Add(type.Namespace);
}
// Compute our map
// there can be multiple namespaces for the same library
var frameworks = Frameworks.GetFrameworks(((DerivedLinkContext)context).App.Platform, false);
var map = new Dictionary <string, List <string> > ();
foreach (var fw in frameworks.Values)
{
if (!map.TryGetValue(fw.LibraryPath, out var list))
{
map [fw.LibraryPath] = list = new List <string> ();
}
list.Add(fw.Namespace);
}
// clean NSObject from loading them
var nsobject = assembly.MainModule.GetType(Namespaces.Foundation + ".NSObject");
var nsobject_cctor = nsobject.GetTypeConstructor();
var instructions = nsobject_cctor.Body.Instructions;
for (int i = 0; i < instructions.Count; i++)
{
Instruction ins = instructions [i];
if (ins.OpCode.Code != Code.Ldstr)
{
continue;
}
// To be safe we only remove the ones we know about *and*
// only when we know the namespace is not being used by the app
// Based on the list from xamcore/src/Foundation/NSObjectMac.cs
bool remove_dlopen = false;
if (map.TryGetValue(ins.Operand as string, out var targetNamespaces))
{
remove_dlopen = !targetNamespaces.Any(v => namespaces.Contains(v));
}
#if DEBUG
else
{
string libname = ins.Operand as string;
if (libname.StartsWith("/", StringComparison.Ordinal))
{
Console.WriteLine("Unprocessed library / namespace {0}", libname);
}
}
#endif
if (remove_dlopen)
{
FieldDefinition f = Nop(ins);
if (f != null)
{
i += 3;
nsobject.Fields.Remove(f);
}
}
}
}
