Add definitions for resource attributes.

These are the attributes that can be applied to the resource file/fork
or the resource themselves. These are not yet bound to anything, or
affecting functionality. Not all of these are applicable on a system
that isn't Mac OS Classic, and others such as the compact flag are
implemented in an unknown way.

Author: tjhancocks

ResourceKit/Builders/RKResourceBuilder.m

@@ -38,6 +38,7 @@ + (nullable RKResource *)buildFromPOD:(nullable RKResourcePOD *)pod
     RKResource *resource = [RKResource ofType:[RKType withCode:pod.typeCode] withId:pod.id];
     resource.name = pod.name;
     resource.data = pod.data;
+    resource.attributes = pod.flags;
     return resource;
 }
 

ResourceKit/Model/RKResource.h

@@ -24,6 +24,16 @@
 
 #import <Foundation/Foundation.h>
 
+typedef NS_ENUM(NSUInteger, RKResourceAttributes)
+{
+    RKResourceSystemHeap = 0x40,
+    RKResourcePurgable = 0x20,
+    RKResourceLocked = 0x10,
+    RKResourceProtected = 0x08,
+    RKResourcePreload = 0x04,
+    RKResourceChanged = 0x02
+};
+
 @class RKType;
 
 @interface RKResource : NSObject
@@ -40,6 +50,9 @@
 /// The actual resource data of the receiver.
 @property (nullable, atomic, strong) NSData *data;
 
+/// The attributes of the resource.
+@property (atomic, assign) RKResourceAttributes attributes;
+
 
 /// Create a new resource with the specified ID and type
 + (nonnull instancetype)ofType:(nonnull RKType *)type withId:(int16_t)id;

ResourceKit/Model/RKResourceFile.h

@@ -24,11 +24,21 @@
 
 #import <ResourceKit/RKResourceContainer.h>
 
+typedef NS_ENUM(NSUInteger, RKResourceForkAttributes)
+{
+    RKResourceForkReadOnly = 0x80,
+    RKResourceForkCompact = 0x40,
+    RKResourceForkChanged = 0x20,
+};
+
 @interface RKResourceFile : NSObject <RKResourceContainer>
 
 /// The location of the file on disk.
 @property (nonnull, atomic, strong, readonly) NSString *path;
 
+/// The Resource Fork attributes.
+@property (atomic, assign) RKResourceForkAttributes attributes;
+
 /// Initialise a new resource file at the specified file path. This will
 /// kick off parsing the resource fork immediately, and if parsing
 /// fails the initialiser will return nil.

ResourceKit/Model/RKResourceFile.m

@@ -83,6 +83,7 @@ - (BOOL)parse
     }
 
     // Build all the actual structures from the PODs
+    _attributes = resourceFilePod.mainFlags;
     _types = [[RKTypeBuilder buildFromArrayOfPODs:resourceFilePod.typePods] mutableCopy];
 
     NSArray <RKResource *> *allResources = [RKResourceBuilder buildFromArrayOfPODs:resourceFilePod.resourcePods];