(todo) Capture the editor settings and enforce file exclusions

Author: glennsarti

src/PowerShellEditorServices.Protocol/Server/LanguageServer.cs

@@ -723,6 +723,35 @@ await this.RunScriptDiagnosticsAsync(
                     this.editorSession,
                     eventContext);
             }
+
+            // Convert the editor file glob patterns into an array for the Workspace
+            // TODO Is this thread-safe? this is hardly an atomic operation. But intermediate objects
+            // are costly. Given it's a config only change maybe a race condition won't occur?
+            editorSession.Workspace.ExcludeFilesGlob.Clear();
+            if (configChangeParams.Settings.Files != null && configChangeParams.Settings.Files.Exclude != null)
+            {
+                foreach(string pattern in configChangeParams.Settings.Files.Exclude.Keys)
+                {
+                    if (configChangeParams.Settings.Files.Exclude[pattern] && !editorSession.Workspace.ExcludeFilesGlob.Contains(pattern))
+                    {
+                        editorSession.Workspace.ExcludeFilesGlob.Add(pattern);
+                    }
+                }
+            }
+            if (configChangeParams.Settings.Search != null && configChangeParams.Settings.Search.Exclude != null)
+            {
+                foreach(string pattern in configChangeParams.Settings.Search.Exclude.Keys)
+                {
+                    if (configChangeParams.Settings.Search.Exclude[pattern] && !editorSession.Workspace.ExcludeFilesGlob.Contains(pattern))
+                    {
+                        editorSession.Workspace.ExcludeFilesGlob.Add(pattern);
+                    }
+                }
+            }
+            if (configChangeParams.Settings.Search != null && configChangeParams.Settings.Search.FollowSymlinks != null)
+            {
+                editorSession.Workspace.FollowSymlinks = configChangeParams.Settings.Search.FollowSymlinks;
+            }
         }
 
         // NEED TO CHECK FILE GLOBBING HERE!!

src/PowerShellEditorServices.Protocol/Server/LanguageServerSettings.cs

@@ -300,12 +300,51 @@ public void Update(
         }
     }
 
-    public class LanguageServerSettingsWrapper
-        {
-            // NOTE: This property is capitalized as 'Powershell' because the
-            // mode name sent from the client is written as 'powershell' and
-            // JSON.net is using camelCasing.
+    /// <summary>
+    /// Additional settings from the Language Client that affect Language Server operations but
+    /// do not exist under the 'powershell' section
+    /// </summary>
+    public class EditorFileSettings
+    {
+        /// <summary>
+        /// Exclude files globs consists of hashtable with the key as the glob and a boolean value to indicate if the
+        /// the glob is in effect.
+        /// </summary>
+        public System.Collections.Generic.Dictionary<string, Boolean> Exclude { get; set; }
+    }
 
-            public LanguageServerSettings Powershell { get; set; }
-        }
+    /// <summary>
+    /// Additional settings from the Language Client that affect Language Server operations but
+    /// do not exist under the 'powershell' section
+    /// </summary>
+    public class EditorSearchSettings
+    {
+        /// <summary>
+        /// Exclude files globs consists of hashtable with the key as the glob and a boolean value to indicate if the
+        /// the glob is in effect.
+        /// </summary>
+        public System.Collections.Generic.Dictionary<string, Boolean> Exclude { get; set; }
+        /// <summary>
+        /// Whether to follow symlinks when searching
+        /// </summary>
+        public bool FollowSymlinks { get; set; } = true;
+    }
+
+    public class LanguageServerSettingsWrapper
+    {
+        // NOTE: This property is capitalized as 'Powershell' because the
+        // mode name sent from the client is written as 'powershell' and
+        // JSON.net is using camelCasing.
+        public LanguageServerSettings Powershell { get; set; }
+
+        // NOTE: This property is capitalized as 'Files' because the
+        // mode name sent from the client is written as 'files' and
+        // JSON.net is using camelCasing.
+        public EditorFileSettings Files { get; set; }
+
+        // NOTE: This property is capitalized as 'Search' because the
+        // mode name sent from the client is written as 'search' and
+        // JSON.net is using camelCasing.
+        public EditorSearchSettings Search { get; set; }
     }
+}