From 2e4a1680b9c1f45a694c54f6085da4baf286ab1f Mon Sep 17 00:00:00 2001
From: bao-qian <bao.github@outlook.com>
Date: Sat, 20 Aug 2016 17:08:16 +0100
Subject: [PATCH] Parallel linq everywhere 1. Parallel linq 2. remove depth 3.
 fix #257

---
 .../Wox.Plugin.Program/AddProgramSource.xaml  |  19 +-
 .../AddProgramSource.xaml.cs                  |   9 -
 Plugins/Wox.Plugin.Program/Main.cs            |  74 ++----
 .../Wox.Plugin.Program/ProgramIndexCache.cs   |   2 +-
 .../Wox.Plugin.Program/ProgramSetting.xaml    |   9 +-
 .../Programs/AppPathsPrograms.cs              |  68 -----
 .../Wox.Plugin.Program/Programs/StartMenu.cs  |  19 --
 Plugins/Wox.Plugin.Program/Programs/UWP.cs    |  23 +-
 .../Programs/UnregisteredPrograms.cs          |  23 --
 Plugins/Wox.Plugin.Program/Programs/Win32.cs  | 251 ++++++++++++++----
 Plugins/Wox.Plugin.Program/Settings.cs        |   1 -
 .../Wox.Plugin.Program.csproj                 |  14 +-
 Wox.Core/Plugin/PluginsLoader.cs              |   7 +
 Wox.Infrastructure/Logger/Log.cs              |   1 -
 14 files changed, 259 insertions(+), 261 deletions(-)
 delete mode 100644 Plugins/Wox.Plugin.Program/Programs/AppPathsPrograms.cs
 delete mode 100644 Plugins/Wox.Plugin.Program/Programs/StartMenu.cs
 delete mode 100644 Plugins/Wox.Plugin.Program/Programs/UnregisteredPrograms.cs

diff --git a/Plugins/Wox.Plugin.Program/AddProgramSource.xaml b/Plugins/Wox.Plugin.Program/AddProgramSource.xaml
index 1cacc4c6a1..6e3d66ff5b 100644
--- a/Plugins/Wox.Plugin.Program/AddProgramSource.xaml
+++ b/Plugins/Wox.Plugin.Program/AddProgramSource.xaml
@@ -4,20 +4,19 @@
              xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
              xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
              mc:Ignorable="d" 
-                Width="400"
-                Height="180"
-        WindowStartupLocation="CenterScreen"
-             d:DesignHeight="400" d:DesignWidth="300">
+             Width="400"
+             Height="120"
+             WindowStartupLocation="CenterScreen">
     <StackPanel Orientation="Vertical">
         <StackPanel Orientation="Horizontal">
             <Label Content="{DynamicResource wox_plugin_program_directory}"/>
-            <TextBox Name="Directory" VerticalAlignment="Center" Width="238" Margin="0,7" />
-            <Button Name="BrowseButton" Content="{DynamicResource wox_plugin_program_browse}" HorizontalAlignment="Left" VerticalAlignment="Center" Width="75" Click="BrowseButton_Click" />
+            <TextBox Name="Directory" VerticalAlignment="Center" Width="300" Margin="0,7" />
         </StackPanel>
-        <StackPanel Orientation="Horizontal">
-            <Label Content="{DynamicResource wox_plugin_program_max_search_depth}" />
-            <TextBox Name="MaxDepth" Text="-1" VerticalAlignment="Center" Width="146" Margin="0,7" />
+        <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+            <Button Click="BrowseButton_Click" Content="{DynamicResource wox_plugin_program_browse}" 
+                HorizontalAlignment="Right" Margin="10" Height="20" Width="70"   />
+            <Button Click="ButtonAdd_OnClick"  Content="{DynamicResource wox_plugin_program_update}" 
+                HorizontalAlignment="Right" Margin="10" Height="20" Width="70"  />
         </StackPanel>
-        <Button VerticalAlignment="Center" HorizontalAlignment="Right" Margin="10" Height="20" Width="70"  Click="ButtonAdd_OnClick"  Content="{DynamicResource wox_plugin_program_update}"   />
     </StackPanel>
 </Window>
diff --git a/Plugins/Wox.Plugin.Program/AddProgramSource.xaml.cs b/Plugins/Wox.Plugin.Program/AddProgramSource.xaml.cs
index 6027621de4..045bcfb7fc 100644
--- a/Plugins/Wox.Plugin.Program/AddProgramSource.xaml.cs
+++ b/Plugins/Wox.Plugin.Program/AddProgramSource.xaml.cs
@@ -26,7 +26,6 @@ namespace Wox.Plugin.Program
 
             InitializeComponent();
             Directory.Text = _editing.Location;
-            MaxDepth.Text = _editing.MaxDepth.ToString();
         }
 
         private void BrowseButton_Click(object sender, RoutedEventArgs e)
@@ -41,25 +40,17 @@ namespace Wox.Plugin.Program
 
         private void ButtonAdd_OnClick(object sender, RoutedEventArgs e)
         {
-            int max;
-            if(!int.TryParse(MaxDepth.Text, out max))
-            {
-                max = -1;
-            }
-
             if(_editing == null)
             {
                 var source = new Settings.ProgramSource
                 {
                     Location = Directory.Text,
-                    MaxDepth = max
                 };
                 _settings.ProgramSources.Add(source);
             }
             else
             {
                 _editing.Location = Directory.Text;
-                _editing.MaxDepth = max;
             }
 
             DialogResult = true;
diff --git a/Plugins/Wox.Plugin.Program/Main.cs b/Plugins/Wox.Plugin.Program/Main.cs
index 4c3ff74ad5..857e87d013 100644
--- a/Plugins/Wox.Plugin.Program/Main.cs
+++ b/Plugins/Wox.Plugin.Program/Main.cs
@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics;
 using System.Linq;
+using System.Windows;
 using System.Windows.Controls;
 using Wox.Infrastructure;
 using Wox.Infrastructure.Logger;
@@ -14,8 +15,8 @@ namespace Wox.Plugin.Program
 {
     public class Main : ISettingProvider, IPlugin, IPluginI18n, IContextMenu, ISavable
     {
-        private static List<Win32> _programs = new List<Win32>();
-        private static List<UWP> _uwps = new List<UWP>();
+        private static Win32[] _win32s = { };
+        private static UWP[] _uwps = { };
 
         private PluginInitContext _context;
 
@@ -33,22 +34,22 @@ namespace Wox.Plugin.Program
             {
                 _cacheStorage = new BinaryStorage<ProgramIndexCache>();
                 _cache = _cacheStorage.Load();
-                _programs = _cache.Programs;
+                _win32s = _cache.Programs;
             });
-            Log.Info($"Preload {_programs.Count} programs from cache");
+            Log.Info($"Preload {_win32s.Length} programs from cache");
             Stopwatch.Debug("Program Index", IndexPrograms);
         }
 
         public void Save()
         {
             _settingsStorage.Save();
-            _cache.Programs = _programs;
+            _cache.Programs = _win32s;
             _cacheStorage.Save();
         }
 
         public List<Result> Query(Query query)
         {
-            var results1 = _programs.AsParallel()
+            var results1 = _win32s.AsParallel()
                 .Where(p => Score(p, query.Search) > 0)
                 .Select(ResultFromProgram);
 
@@ -64,8 +65,8 @@ namespace Wox.Plugin.Program
         {
             var result = new Result
             {
-                Title = p.Title,
-                SubTitle = p.ExecutablePath,
+                Title = p.FullName,
+                SubTitle = p.FullPath,
                 IcoPath = p.IcoPath,
                 Score = p.Score,
                 ContextData = p,
@@ -73,8 +74,8 @@ namespace Wox.Plugin.Program
                 {
                     var info = new ProcessStartInfo
                     {
-                        FileName = p.ExecutablePath,
-                        WorkingDirectory = p.Directory
+                        FileName = p.FullPath,
+                        WorkingDirectory = p.ParentDirectory
                     };
                     var hide = StartProcess(info);
                     return hide;
@@ -104,8 +105,8 @@ namespace Wox.Plugin.Program
 
         private int Score(Win32 program, string query)
         {
-            var score1 = StringMatcher.Score(program.Title, query);
-            var score2 = StringMatcher.ScoreForPinyin(program.Title, query);
+            var score1 = StringMatcher.Score(program.FullName, query);
+            var score2 = StringMatcher.ScoreForPinyin(program.FullName, query);
             var score3 = StringMatcher.Score(program.ExecutableName, query);
             var score = new[] { score1, score2, score3 }.Max();
             program.Score = score;
@@ -129,51 +130,10 @@ namespace Wox.Plugin.Program
 
         public static void IndexPrograms()
         {
-            _programs = AllWin32Programs();
+            _win32s = Win32.All(_settings);
             _uwps = UWP.All();
         }
 
-        private static List<Win32> AllWin32Programs()
-        {
-            var appPaths = AppPathsPrograms.All();
-            var startMenu = StartMenu.All(_settings.ProgramSuffixes);
-            var unregistered = UnregisteredPrograms.All(_settings.ProgramSources, _settings.ProgramSuffixes);
-            var programs = appPaths.Concat(startMenu).Concat(unregistered);
-
-            programs = programs.AsParallel()
-                                // filter duplicate program
-                               .GroupBy(x => new { ExecutePath = x.ExecutablePath, ExecuteName = x.ExecutableName })
-                               .Select(g => g.First())
-                               .Select(ScoreFilter);
-
-            return programs.ToList();
-        }
-
-        private static Win32 ScoreFilter(Win32 p)
-        {
-            var start = new[] { "启动", "start" };
-            var doc = new[] { "帮助", "help", "文档", "documentation" };
-            var uninstall = new[] { "卸载", "uninstall" };
-
-            var contained = start.Any(s => p.Title.ToLower().Contains(s));
-            if (contained)
-            {
-                p.Score += 10;
-            }
-            contained = doc.Any(d => p.Title.ToLower().Contains(d));
-            if (contained)
-            {
-                p.Score -= 10;
-            }
-            contained = uninstall.Any(u => p.Title.ToLower().Contains(u));
-            if (contained)
-            {
-                p.Score -= 20;
-            }
-
-            return p;
-        }
-
         public Control CreateSettingPanel()
         {
             return new ProgramSetting(_context, _settings);
@@ -203,8 +163,8 @@ namespace Wox.Plugin.Program
                         {
                             var info = new ProcessStartInfo
                             {
-                                FileName = p.ExecutablePath,
-                                WorkingDirectory = p.Directory,
+                                FileName = p.FullPath,
+                                WorkingDirectory = p.ParentDirectory,
                                 Verb = "runas"
                             };
                             var hide = StartProcess(info);
@@ -217,7 +177,7 @@ namespace Wox.Plugin.Program
                         Title = _context.API.GetTranslation("wox_plugin_program_open_containing_folder"),
                         Action = _ =>
                         {
-                            var hide = StartProcess(new ProcessStartInfo(p.Directory));
+                            var hide = StartProcess(new ProcessStartInfo(p.ParentDirectory));
                             return hide;
                         },
                         IcoPath = "Images/folder.png"
diff --git a/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs b/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs
index 480f7d66d6..7e63327e7a 100644
--- a/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs
+++ b/Plugins/Wox.Plugin.Program/ProgramIndexCache.cs
@@ -7,6 +7,6 @@ namespace Wox.Plugin.Program
     [Serializable]
     public class ProgramIndexCache
     {
-        public List<Win32> Programs = new List<Win32>();
+        public Win32[] Programs = { };
     }
 }
\ No newline at end of file
diff --git a/Plugins/Wox.Plugin.Program/ProgramSetting.xaml b/Plugins/Wox.Plugin.Program/ProgramSetting.xaml
index a1d1405939..2636e349f4 100644
--- a/Plugins/Wox.Plugin.Program/ProgramSetting.xaml
+++ b/Plugins/Wox.Plugin.Program/ProgramSetting.xaml
@@ -25,20 +25,13 @@
             Drop="programSourceView_Drop" >
             <ListView.View>
                 <GridView>
-                    <GridViewColumn Header="{DynamicResource wox_plugin_program_location}"  Width="450">
+                    <GridViewColumn Header="{DynamicResource wox_plugin_program_location}" Width="550">
                         <GridViewColumn.CellTemplate>
                             <DataTemplate>
                                 <TextBlock Text="{Binding Location, ConverterParameter=(null), Converter={program:LocationConverter}}"/>
                             </DataTemplate>
                         </GridViewColumn.CellTemplate>
                     </GridViewColumn>
-                    <GridViewColumn Header="{DynamicResource wox_plugin_program_max_depth_header}"  Width="130">
-                        <GridViewColumn.CellTemplate>
-                            <DataTemplate>
-                                <TextBlock Text="{Binding MaxDepth, ConverterParameter=(null)}"/>
-                            </DataTemplate>
-                        </GridViewColumn.CellTemplate>
-                    </GridViewColumn>
                 </GridView>
             </ListView.View>
         </ListView>
diff --git a/Plugins/Wox.Plugin.Program/Programs/AppPathsPrograms.cs b/Plugins/Wox.Plugin.Program/Programs/AppPathsPrograms.cs
deleted file mode 100644
index c7af623356..0000000000
--- a/Plugins/Wox.Plugin.Program/Programs/AppPathsPrograms.cs
+++ /dev/null
@@ -1,68 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-using System.Linq;
-using Microsoft.Win32;
-
-namespace Wox.Plugin.Program.Programs
-{
-    [Serializable]
-    public class AppPathsPrograms : Win32
-    {
-        public static IEnumerable<Win32> All()
-        {
-            // https://msdn.microsoft.com/en-us/library/windows/desktop/ee872121
-            var programs = new List<Win32>();
-            const string appPaths = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths";
-            using (var root = Registry.LocalMachine.OpenSubKey(appPaths))
-            {
-                if (root != null)
-                {
-                    programs.AddRange(ProgramsFromRegistryKey(root));
-                }
-            }
-            using (var root = Registry.CurrentUser.OpenSubKey(appPaths))
-            {
-                if (root != null)
-                {
-                    programs.AddRange(ProgramsFromRegistryKey(root));
-                }
-            }
-            return programs;
-        }
-
-        private static IEnumerable<Win32> ProgramsFromRegistryKey(RegistryKey root)
-        {
-            var programs = root.GetSubKeyNames()
-                               .Select(subkey => ProgramFromRegistrySubkey(root, subkey))
-                               .Where(p => !string.IsNullOrEmpty(p.Title));
-            return programs;
-        }
-
-        private static Win32 ProgramFromRegistrySubkey(RegistryKey root, string subkey)
-        {
-            using (var key = root.OpenSubKey(subkey))
-            {
-                if (key != null)
-                {
-                    var defaultValue = string.Empty;
-                    var path = key.GetValue(defaultValue) as string;
-                    if (!string.IsNullOrEmpty(path))
-                    {
-                        // fix path like this: ""\"C:\\folder\\executable.exe\""
-                        path = path.Trim('"');
-                        path = Environment.ExpandEnvironmentVariables(path);
-
-                        if (File.Exists(path))
-                        {
-                            var entry = CreateEntry(path);
-                            entry.ExecutableName = subkey;
-                            return entry;
-                        }
-                    }
-                }
-            }
-            return new Win32();
-        }
-    }
-}
\ No newline at end of file
diff --git a/Plugins/Wox.Plugin.Program/Programs/StartMenu.cs b/Plugins/Wox.Plugin.Program/Programs/StartMenu.cs
deleted file mode 100644
index e8a364cffc..0000000000
--- a/Plugins/Wox.Plugin.Program/Programs/StartMenu.cs
+++ /dev/null
@@ -1,19 +0,0 @@
-using System;
-using System.Collections.Generic;
-
-namespace Wox.Plugin.Program.Programs
-{
-    [Serializable]
-    class StartMenu : Win32
-    {
-        public static IEnumerable<Win32> All(string[] suffixes)
-        {
-            var directory1 = Environment.GetFolderPath(Environment.SpecialFolder.Programs);
-            var directory2 = Environment.GetFolderPath(Environment.SpecialFolder.CommonPrograms);
-            var programs = new List<Win32>();
-            GetAppFromDirectory(programs, directory1, -1, suffixes);
-            GetAppFromDirectory(programs, directory2, -1, suffixes);
-            return programs;
-        }
-    }
-}
diff --git a/Plugins/Wox.Plugin.Program/Programs/UWP.cs b/Plugins/Wox.Plugin.Program/Programs/UWP.cs
index 5bd2495dcc..e7ca829b3d 100644
--- a/Plugins/Wox.Plugin.Program/Programs/UWP.cs
+++ b/Plugins/Wox.Plugin.Program/Programs/UWP.cs
@@ -37,6 +37,10 @@ namespace Wox.Plugin.Program.Programs
 
         public int Score { get; set; }
 
+        public UWP()
+        {
+            Apps = new Application[] { };
+        }
         public UWP(Package package)
         {
             Package = package;
@@ -118,37 +122,32 @@ namespace Wox.Plugin.Program.Programs
             }).ToArray();
         }
 
-        public static List<UWP> All()
+        public static UWP[] All()
         {
             var windows10 = new Version(10, 0);
             var support = Environment.OSVersion.Version.Major >= windows10.Major;
             if (support)
             {
-                var packages = CurrentUserPackages();
-                var uwps = new List<UWP>();
-                // todo use parallel linq
-                Parallel.ForEach(packages, p =>
+                var packages = CurrentUserPackages().AsParallel().Select(p =>
                 {
                     try
                     {
                         var u = new UWP(p);
-                        if (u.Apps.Length > 0)
-                        {
-                            uwps.Add(u);
-                        }
+                        return u;
                     }
                     catch (Exception e)
                     {
                         // if there are errors, just ignore it and continue
                         var message = $"Can't parse {p.Id.Name}: {e.Message}";
                         Log.Error(message);
+                        return new UWP();
                     }
-                });
-                return uwps;
+                }).Where(u => u.Apps.Length > 0);
+                return packages.ToArray();
             }
             else
             {
-                return new List<UWP>();
+                return new UWP[] { };
             }
         }
 
diff --git a/Plugins/Wox.Plugin.Program/Programs/UnregisteredPrograms.cs b/Plugins/Wox.Plugin.Program/Programs/UnregisteredPrograms.cs
deleted file mode 100644
index 58a629d807..0000000000
--- a/Plugins/Wox.Plugin.Program/Programs/UnregisteredPrograms.cs
+++ /dev/null
@@ -1,23 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.IO;
-
-namespace Wox.Plugin.Program.Programs
-{
-    [Serializable]
-    public class UnregisteredPrograms : Win32
-    {
-        public static List<Win32> All(List<Settings.ProgramSource> sources, string[] suffixes)
-        {
-            List<Win32> programs = new List<Win32>();
-            foreach (var source in sources)
-            {
-                if (System.IO.Directory.Exists(source.Location) && source.MaxDepth >= -1)
-                {
-                    GetAppFromDirectory(programs, source.Location, source.MaxDepth, suffixes);
-                }
-            }
-            return programs;
-        }
-    }
-}
\ No newline at end of file
diff --git a/Plugins/Wox.Plugin.Program/Programs/Win32.cs b/Plugins/Wox.Plugin.Program/Programs/Win32.cs
index 8533a36b0c..b8f1eb6414 100644
--- a/Plugins/Wox.Plugin.Program/Programs/Win32.cs
+++ b/Plugins/Wox.Plugin.Program/Programs/Win32.cs
@@ -3,7 +3,9 @@ using System.Collections.Generic;
 using System.Diagnostics;
 using System.IO;
 using System.Linq;
-using Wox.Infrastructure.Exception;
+using System.Windows;
+using IWshRuntimeLibrary;
+using Microsoft.Win32;
 using Wox.Infrastructure.Logger;
 
 namespace Wox.Plugin.Program.Programs
@@ -11,80 +13,231 @@ namespace Wox.Plugin.Program.Programs
     [Serializable]
     public class Win32
     {
-        public string Title { get; set; }
+        public string FullName { get; set; }
         public string IcoPath { get; set; }
-        public string ExecutablePath { get; set; }
-        public string Directory { get; set; }
+        public string FullPath { get; set; }
+        public string ParentDirectory { get; set; }
         public string ExecutableName { get; set; }
         public int Score { get; set; }
 
-        protected static Win32 CreateEntry(string file)
+        private const string ShortcutExtension = "lnk";
+        private const string ApplicationReferenceExtension = "appref-ms";
+        private const string ExeExtension = "exe";
+
+        public override string ToString()
+        {
+            return ExecutableName;
+        }
+
+        private static Win32 Win32Program(string path)
         {
             var p = new Win32
             {
-                Title = Path.GetFileNameWithoutExtension(file),
-                IcoPath = file,
-                ExecutablePath = file,
-                Directory = System.IO.Directory.GetParent(file).FullName
+                FullName = Path.GetFileNameWithoutExtension(path),
+                IcoPath = path,
+                FullPath = path,
+                ParentDirectory = Directory.GetParent(path).FullName,
             };
-
-            switch (Path.GetExtension(file).ToLower())
-            {
-                case ".exe":
-                    p.ExecutableName = Path.GetFileName(file);
-                    try
-                    {
-                        var versionInfo = FileVersionInfo.GetVersionInfo(file);
-                        if (!string.IsNullOrEmpty(versionInfo.FileDescription))
-                        {
-                            p.Title = versionInfo.FileDescription;
-                        }
-                    }
-                    catch (Exception)
-                    {
-                    }
-                    break;
-            }
             return p;
         }
 
-        protected static void GetAppFromDirectory(List<Win32> apps, string directory, int depth, string[] suffixes)
+        private static Win32 LnkProgram(string path)
         {
-            if (depth == -1)
+            var shell = new WshShell();
+            var shortcut = (IWshShortcut)shell.CreateShortcut(path);
+            var program = Win32Program(path);
+
+            try
             {
+                var description = shortcut.Description;
+                if (!string.IsNullOrEmpty(description))
+                {
+                    program.FullName += $": {description}";
+                }
+                else
+                {
+                    if (!string.IsNullOrEmpty(shortcut.TargetPath))
+                    {
+                        var info = FileVersionInfo.GetVersionInfo(shortcut.TargetPath);
+                        if (!string.IsNullOrEmpty(info.FileDescription))
+                        {
+                            program.FullName += $": {info.FileDescription}";
+                        }
+                    }
+                }
+                return program;
             }
-            else if (depth > 0)
+            catch (Exception)
             {
-                depth = depth - 1;
+                Log.Error($"Error when parsing shortcut: {path}");
+                return program;
+            }
+        }
+
+        private static Win32 ExeProgram(string path)
+        {
+            var program = Win32Program(path);
+            var versionInfo = FileVersionInfo.GetVersionInfo(path);
+            if (!string.IsNullOrEmpty(versionInfo.FileDescription))
+            {
+                program.FullName = versionInfo.FileDescription;
+            }
+            return program;
+        }
+
+        private static IEnumerable<string> ProgramPaths(string directory, string[] suffixes)
+        {
+            if (Directory.Exists(directory))
+            {
+                var files = Directory.EnumerateFiles(directory, "*", SearchOption.AllDirectories).Where(
+                    f => suffixes.Contains(Extension(f))
+                );
+                return files;
             }
             else
             {
-                return;
+                return new string[] { };
             }
+        }
 
-            foreach (var f in System.IO.Directory.GetFiles(directory))
+        private static string Extension(string path)
+        {
+            var extension = Path.GetExtension(path)?.ToLower();
+            if (!string.IsNullOrEmpty(extension))
             {
-                if (suffixes.Any(o => f.EndsWith("." + o)))
+                return extension.Substring(1);
+            }
+            else
+            {
+                return string.Empty;
+            }
+        }
+
+        private static ParallelQuery<Win32> UnregisteredPrograms(List<Settings.ProgramSource> sources, string[] suffixes)
+        {
+            var paths = sources.Where(s => Directory.Exists(s.Location))
+                               .SelectMany(s => ProgramPaths(s.Location, suffixes))
+                               .ToArray();
+            var programs1 = paths.AsParallel().Where(p => Extension(p) == ExeExtension).Select(ExeProgram);
+            var programs2 = paths.AsParallel().Where(p => Extension(p) == ShortcutExtension).Select(ExeProgram);
+            var programs3 = from p in paths.AsParallel()
+                            let e = Extension(p)
+                            where e != ShortcutExtension && e != ExeExtension
+                            select Win32Program(p);
+            return programs1.Concat(programs2).Concat(programs3);
+        }
+
+        private static ParallelQuery<Win32> StartMenuPrograms(string[] suffixes)
+        {
+            var directory1 = Environment.GetFolderPath(Environment.SpecialFolder.Programs);
+            var directory2 = Environment.GetFolderPath(Environment.SpecialFolder.CommonPrograms);
+            var paths1 = ProgramPaths(directory1, suffixes);
+            var paths2 = ProgramPaths(directory2, suffixes);
+            var paths = paths1.Concat(paths2).ToArray();
+            var programs1 = paths.AsParallel().Where(p => Extension(p) == ShortcutExtension).Select(LnkProgram);
+            var programs2 = paths.AsParallel().Where(p => Extension(p) == ApplicationReferenceExtension).Select(Win32Program);
+            return programs1.Concat(programs2);
+        }
+
+
+        private static ParallelQuery<Win32> AppPathsPrograms(string[] suffixes)
+        {
+            // https://msdn.microsoft.com/en-us/library/windows/desktop/ee872121
+            const string appPaths = @"SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths";
+            var programs = new List<Win32>();
+            using (var root = Registry.LocalMachine.OpenSubKey(appPaths))
+            {
+                if (root != null)
                 {
-                    Win32 p;
-                    try
-                    {
-                        p = CreateEntry(f);
-                    }
-                    catch (Exception e)
-                    {
-                        var woxPluginException = new WoxPluginException("Program",
-                            $"GetAppFromDirectory failed: {directory}", e);
-                        Log.Exception(woxPluginException);
-                        continue;
-                    }
-                    apps.Add(p);
+                    programs.AddRange(ProgramsFromRegistryKey(root));
                 }
             }
-            foreach (var d in System.IO.Directory.GetDirectories(directory))
+            using (var root = Registry.CurrentUser.OpenSubKey(appPaths))
             {
-                GetAppFromDirectory(apps, d, depth, suffixes);
+                if (root != null)
+                {
+                    programs.AddRange(ProgramsFromRegistryKey(root));
+                }
             }
+            var filtered = programs.AsParallel().Where(p => suffixes.Contains(Extension(p.ExecutableName)));
+            return filtered;
+        }
+
+        private static IEnumerable<Win32> ProgramsFromRegistryKey(RegistryKey root)
+        {
+            var programs = root.GetSubKeyNames()
+                               .Select(subkey => ProgramFromRegistrySubkey(root, subkey))
+                               .Where(p => !string.IsNullOrEmpty(p.FullName));
+            return programs;
+        }
+
+        private static Win32 ProgramFromRegistrySubkey(RegistryKey root, string subkey)
+        {
+            using (var key = root.OpenSubKey(subkey))
+            {
+                if (key != null)
+                {
+                    var defaultValue = string.Empty;
+                    var path = key.GetValue(defaultValue) as string;
+                    if (!string.IsNullOrEmpty(path))
+                    {
+                        // fix path like this: ""\"C:\\folder\\executable.exe\""
+                        path = path.Trim('"');
+                        path = Environment.ExpandEnvironmentVariables(path);
+
+                        if (System.IO.File.Exists(path))
+                        {
+                            var entry = Win32Program(path);
+                            entry.ExecutableName = subkey;
+                            return entry;
+                        }
+                    }
+                }
+            }
+            return new Win32();
+        }
+
+        private static Win32 ScoreFilter(Win32 p)
+        {
+            var start = new[] { "启动", "start" };
+            var doc = new[] { "帮助", "help", "文档", "documentation" };
+            var uninstall = new[] { "卸载", "uninstall" };
+
+            var contained = start.Any(s => p.FullName.ToLower().Contains(s));
+            if (contained)
+            {
+                p.Score += 10;
+            }
+            contained = doc.Any(d => p.FullName.ToLower().Contains(d));
+            if (contained)
+            {
+                p.Score -= 10;
+            }
+            contained = uninstall.Any(u => p.FullName.ToLower().Contains(u));
+            if (contained)
+            {
+                p.Score -= 20;
+            }
+
+            return p;
+        }
+
+        public static Win32[] All(Settings settings)
+        {
+            ParallelQuery<Win32> programs = new List<Win32>().AsParallel();
+            if (settings.EnableRegistrySource)
+            {
+                var appPaths = AppPathsPrograms(settings.ProgramSuffixes);
+                programs = programs.Concat(appPaths);
+            }
+            if (settings.EnableStartMenuSource)
+            {
+                var startMenu = StartMenuPrograms(settings.ProgramSuffixes);
+                programs = programs.Concat(startMenu);
+            }
+            var unregistered = UnregisteredPrograms(settings.ProgramSources, settings.ProgramSuffixes);
+            programs = programs.Concat(unregistered).Select(ScoreFilter);
+            return programs.ToArray();
         }
     }
 }
diff --git a/Plugins/Wox.Plugin.Program/Settings.cs b/Plugins/Wox.Plugin.Program/Settings.cs
index fb1dabbf32..9c981a4e00 100644
--- a/Plugins/Wox.Plugin.Program/Settings.cs
+++ b/Plugins/Wox.Plugin.Program/Settings.cs
@@ -17,7 +17,6 @@ namespace Wox.Plugin.Program
         public class ProgramSource
         {
             public string Location { get; set; }
-            public int MaxDepth { get; set; }
         }
     }
 }
diff --git a/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj b/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
index 6c7ac1f2f6..6746a1afc0 100644
--- a/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
+++ b/Plugins/Wox.Plugin.Program/Wox.Plugin.Program.csproj
@@ -71,7 +71,6 @@
       <DependentUpon>AddProgramSource.xaml</DependentUpon>
     </Compile>
     <Compile Include="FileChangeWatcher.cs" />
-    <Compile Include="Programs\StartMenu.cs" />
     <Compile Include="Programs\UWP.cs" />
     <Compile Include="Programs\Win32.cs" />
     <Compile Include="SuffixesConverter.cs" />
@@ -80,8 +79,6 @@
     <Compile Include="ProgramSetting.xaml.cs">
       <DependentUpon>ProgramSetting.xaml</DependentUpon>
     </Compile>
-    <Compile Include="Programs\AppPathsPrograms.cs" />
-    <Compile Include="Programs\UnregisteredPrograms.cs" />
     <Compile Include="Settings.cs" />
     <Compile Include="ProgramSuffixes.xaml.cs">
       <DependentUpon>ProgramSuffixes.xaml</DependentUpon>
@@ -154,6 +151,17 @@
   <ItemGroup>
     <Analyzer Include="..\..\packages\UwpDesktop.10.0.10586.2\analyzers\dotnet\UwpDesktopAnalyzer.dll" />
   </ItemGroup>
+  <ItemGroup>
+    <COMReference Include="IWshRuntimeLibrary">
+      <Guid>{F935DC20-1CF0-11D0-ADB9-00C04FD58A0B}</Guid>
+      <VersionMajor>1</VersionMajor>
+      <VersionMinor>0</VersionMinor>
+      <Lcid>0</Lcid>
+      <WrapperTool>tlbimp</WrapperTool>
+      <Isolated>False</Isolated>
+      <EmbedInteropTypes>True</EmbedInteropTypes>
+    </COMReference>
+  </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
   <Import Project="..\..\packages\UwpDesktop.10.0.10586.2\build\portable-net45+uap\UwpDesktop.targets" Condition="Exists('..\..\packages\UwpDesktop.10.0.10586.2\build\portable-net45+uap\UwpDesktop.targets')" />
   <Target Name="EnsureNuGetPackageBuildImports" BeforeTargets="PrepareForBuild">
diff --git a/Wox.Core/Plugin/PluginsLoader.cs b/Wox.Core/Plugin/PluginsLoader.cs
index a43cd43b35..aeea4f4662 100644
--- a/Wox.Core/Plugin/PluginsLoader.cs
+++ b/Wox.Core/Plugin/PluginsLoader.cs
@@ -33,6 +33,12 @@ namespace Wox.Core.Plugin
 
             foreach (var metadata in metadatas)
             {
+#if DEBUG
+                var assembly = Assembly.Load(AssemblyName.GetAssemblyName(metadata.ExecuteFilePath));
+                var types = assembly.GetTypes();
+                var type = types.First(o => o.IsClass && !o.IsAbstract && o.GetInterfaces().Contains(typeof(IPlugin)));
+                var plugin = (IPlugin)Activator.CreateInstance(type);
+#else
                 Assembly assembly;
                 try
                 {
@@ -64,6 +70,7 @@ namespace Wox.Core.Plugin
                     Log.Exception(new WoxPluginException(metadata.Name, "Can't create instance", e));
                     continue;
                 }
+#endif
                 PluginPair pair = new PluginPair
                 {
                     Plugin = plugin,
diff --git a/Wox.Infrastructure/Logger/Log.cs b/Wox.Infrastructure/Logger/Log.cs
index 56870be676..f2cd9f06bb 100644
--- a/Wox.Infrastructure/Logger/Log.cs
+++ b/Wox.Infrastructure/Logger/Log.cs
@@ -48,7 +48,6 @@ namespace Wox.Infrastructure.Logger
         public static void Exception(System.Exception e)
         {
 #if DEBUG
-            throw e;
 #else
             var type = CallerType();
             var logger = LogManager.GetLogger(type);