Move DirNameToAge to FsUtils.

ATXSerializables/FsUtils.cs

-using System.IO;
+using System;
+using System.Globalization;
+using System.IO;
 using System.Linq;
+using NLog;
 
 namespace ATXCommon
 {
     public static class FsUtils
     {
+        private static readonly Logger Log = LogManager.GetCurrentClassLogger();
+
         /// <summary>
         /// Recursively sum up size of all files under a given path.
         /// </summary>
@@ -15,5 +20,25 @@ namespace ATXCommon
                 .GetFiles("*", SearchOption.AllDirectories)
                 .Sum(file => file.Length);
         }
+
+        /// <summary>
+        /// Convert the timestamp given by the NAME of a directory into the age in days.
+        /// </summary>
+        /// <param name="dir">The DirectoryInfo object to check for its name-age.</param>
+        /// <param name="baseTime">The DateTime object to compare to.</param>
+        /// <returns>The age in days, or -1 in case of an error.</returns>
+        public static int DirNameToAge(DirectoryInfo dir, DateTime baseTime) {
+            DateTime dirTimestamp;
+            try {
+                dirTimestamp = DateTime.ParseExact(dir.Name, "yyyy-MM-dd__HH-mm-ss",
+                    CultureInfo.InvariantCulture);
+            }
+            catch (Exception ex) {
+                Log.Warn("Unable to parse time from name [{0}], skipping: {1}",
+                    dir.Name, ex.Message);
+                return -1;
+            }
+            return (baseTime - dirTimestamp).Days;
+        }
     }
 }

AutoTx/AutoTx.cs

@@ -1069,7 +1069,7 @@ namespace AutoTx
             foreach (var userdir in graceDir.GetDirectories()) {
                 var expired = new List<Tuple<DirectoryInfo, long, int>>();
                 foreach (var subdir in userdir.GetDirectories()) {
-                    var age = DirNameToAge(subdir, now);
+                    var age = FsUtils.DirNameToAge(subdir, now);
                     if (age < thresh)
                         continue;
                     long size = -1;
@@ -1088,26 +1088,6 @@ namespace AutoTx
             return collection;
         }
 
-        /// <summary>
-        /// Convert the timestamp given by the NAME of a directory into the age in days.
-        /// </summary>
-        /// <param name="dir">The DirectoryInfo object to check for its name-age.</param>
-        /// <param name="baseTime">The DateTime object to compare to.</param>
-        /// <returns>The age in days, or -1 in case of an error.</returns>
-        private int DirNameToAge(DirectoryInfo dir, DateTime baseTime) {
-            DateTime dirTimestamp;
-            try {
-                dirTimestamp = DateTime.ParseExact(dir.Name, "yyyy-MM-dd__HH-mm-ss",
-                    CultureInfo.InvariantCulture);
-            }
-            catch (Exception ex) {
-                Log.Warn("ERROR parsing timestamp from directory name [{0}], skipping: {1}",
-                    dir.Name, ex.Message);
-                return -1;
-            }
-            return (baseTime - dirTimestamp).Days;
-        }
-
         #endregion
 
     }