PS: Copy extractor and various scripts from internal repo to public repo.

powershell/extractor/Semmle.Extraction.PowerShell/Extractor/IProgressMonitor.cs

@@ -0,0 +1,22 @@
+using System;
+
+namespace Semmle.Extraction.PowerShell
+{
+    /// <summary>
+    /// Callback for various extraction events.
+    /// (Used for display of progress).
+    /// </summary>
+    public interface IProgressMonitor
+    {
+        /// <summary>
+        /// Callback that a particular item has been analysed.
+        /// </summary>
+        /// <param name="item">The item number being processed.</param>
+        /// <param name="total">The total number of items to process.</param>
+        /// <param name="source">The name of the item, e.g. a source file.</param>
+        /// <param name="output">The name of the item being output, e.g. a trap file.</param>
+        /// <param name="time">The time to extract the item.</param>
+        /// <param name="action">What action was taken for the file.</param>
+        void Analysed(int item, int total, string source, string output, TimeSpan time, AnalysisAction action);
+    }
+}