finish LastResort

QuickLook.Plugin.LastResort/FileHelper.cs

@@ -0,0 +1,74 @@
+using System;
+using System.Collections.Generic;
+using System.IO;
+
+namespace QuickLook.Plugin.LastResort
+{
+    public static class FileHelper
+    {
+        public static void CountFolder(string root, ref bool stop, out long totalDirs, out long totalFiles,
+            out long totalSize)
+        {
+            totalDirs = totalFiles = totalSize = 0L;
+
+            var stack = new Stack<DirectoryInfo>();
+            stack.Push(new DirectoryInfo(root));
+
+            totalDirs++; // self
+
+            do
+            {
+                if (stop)
+                    break;
+
+                var pos = stack.Pop();
+
+                try
+                {
+                    // process files in current directory
+                    foreach (var file in pos.EnumerateFiles())
+                    {
+                        totalFiles++;
+                        totalSize += file.Length;
+                    }
+
+                    // then push all sub-directories
+                    foreach (var dir in pos.EnumerateDirectories())
+                    {
+                        totalDirs++;
+                        stack.Push(dir);
+                    }
+                }
+                catch (Exception)
+                {
+                    totalDirs++;
+                    //pos = stack.Pop();
+                }
+            } while (stack.Count != 0);
+        }
+
+        public static string ToPrettySize(this long value, int decimalPlaces = 0)
+        {
+            const long OneKb = 1024;
+            const long OneMb = OneKb * 1024;
+            const long OneGb = OneMb * 1024;
+            const long OneTb = OneGb * 1024;
+
+            var asTb = Math.Round((double) value / OneTb, decimalPlaces);
+            var asGb = Math.Round((double) value / OneGb, decimalPlaces);
+            var asMb = Math.Round((double) value / OneMb, decimalPlaces);
+            var asKb = Math.Round((double) value / OneKb, decimalPlaces);
+            var chosenValue = asTb > 1
+                ? $"{asTb} TB"
+                : asGb > 1
+                    ? $"{asGb} GB"
+                    : asMb > 1
+                        ? $"{asMb} MB"
+                        : asKb > 1
+                            ? $"{asKb} KB"
+                            : $"{Math.Round((double) value, decimalPlaces)} bytes";
+
+            return chosenValue;
+        }
+    }
+}