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Packages/com.unity.xr.openxr/Runtime/Features/OpenXRFeatureAttribute.cs

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+using System;
+using UnityEngine.XR.OpenXR;
+using UnityEngine.XR.OpenXR.Features;
+
+#if UNITY_EDITOR || PACKAGE_DOCS_GENERATION
+namespace UnityEditor.XR.OpenXR.Features
+{
+    public class FeatureCategory
+    {
+        public const string Default = "";
+        public const string Feature = "Feature";
+        public const string Interaction = "Interaction";
+    }
+
+
+    [AttributeUsage(AttributeTargets.Class)]
+    public class OpenXRFeatureAttribute : Attribute
+    {
+        internal class CopyFieldAttribute : Attribute
+        {
+            public string FieldName;
+            public CopyFieldAttribute(string fieldName)
+            {
+                FieldName = fieldName;
+            }
+        }
+
+        /// <summary>
+        /// Feature name to show in the feature configuration UI.
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.nameUi))] public string UiName;
+
+        /// <summary>
+        /// Hide this feature from the UI.
+        /// </summary>
+        public bool Hidden;
+
+        /// <summary>
+        /// Feature description to show in the UI.
+        /// </summary>
+        public string Desc;
+
+        /// <summary>
+        /// OpenXR runtime extension strings that need to be enabled to use this extension.
+        /// If these extensions can't be enabled, a message will be logged, but execution will continue.
+        /// Can contain multiple extensions separated by spaces.
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.openxrExtensionStrings))] public string OpenxrExtensionStrings;
+
+        /// <summary>
+        /// Company that created the feature, shown in the feature configuration UI.
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.company))] public string Company;
+
+        /// <summary>
+        /// Link to the feature documentation. The help button in the UI opens this link in a web browser.
+        /// </summary>
+        public string DocumentationLink;
+
+        /// <summary>
+        /// Feature version.
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.version))] public string Version;
+
+        /// <summary>
+        /// BuildTargets in this list use a custom runtime loader (that is, openxr_loader.dll).
+        /// Only one feature per platform can have a custom runtime loader.
+        /// Unity will skip copying the default loader to the build and use this feature's loader instead on these platforms.
+        /// Loader must be placed alongside the OpenXRFeature script or in a subfolder of it.
+        /// </summary>
+        public BuildTarget[] CustomRuntimeLoaderBuildTargets;
+
+        /// <summary>
+        /// BuildTargetsGroups that this feature supports. The feature will only be shown or included on these platforms.
+        /// </summary>
+        public BuildTargetGroup[] BuildTargetGroups;
+
+        /// <summary>
+        /// Feature category.
+        /// </summary>
+        public string Category = "";
+
+        /// <summary>
+        /// True if this feature is required, false otherwise.
+        /// Required features will cause the loader to fail to initialize if they fail to initialize or start.
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.required))] public bool Required = false;
+
+        /// <summary>
+        /// Determines the order in which the feature will be called in both the GetInstanceProcAddr hook list and
+        /// when events such as OnInstanceCreate are called. Higher priority features will hook after lower priority features and
+        /// be called first in the event list.
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.priority))] public int Priority = 0;
+
+        /// <summary>
+        /// A well known string id for this feature. It is recommended that that id be in reverse DNS naming format (com.foo.bar.feature).
+        /// </summary>
+        [CopyField(nameof(OpenXRFeature.featureIdInternal))] public string FeatureId = "";
+
+
+        internal static readonly System.Text.RegularExpressions.Regex k_PackageVersionRegex = new System.Text.RegularExpressions.Regex(@"(\d*\.\d*)\..*");
+
+        /// <summary>
+        /// This method returns the OpenXR internal documentation link.  This is necessary because the documentation link was made public in the
+        /// Costants class which prevents it from being alterned in anything but a major revision.  This method will patch up the documentation links
+        /// as needed as long as they are internal openxr documentation links.
+        /// </summary>
+        internal string InternalDocumentationLink
+        {
+            get
+            {
+                if (string.IsNullOrEmpty(DocumentationLink))
+                    return DocumentationLink;
+
+                // Update the version if needed
+                if (DocumentationLink.StartsWith(Constants.k_DocumentationManualURL))
+                {
+                    var version = PackageManager.PackageInfo.FindForAssembly(typeof(OpenXRFeatureAttribute).Assembly)?.version;
+                    var majorminor = k_PackageVersionRegex.Match(version).Groups[1].Value;
+                    DocumentationLink = DocumentationLink.Replace("1.0", majorminor);
+                }
+
+                return DocumentationLink;
+            }
+        }
+    }
+}
+#endif