feature: add -p:EnablePortable=true option for dotnet publish command to store app data portable (#834)

Author: love-linger

README.md

@@ -64,7 +64,7 @@ This software creates a folder `$"{System.Environment.SpecialFolder.ApplicationD
 | macOS   | `${HOME}/Library/Application Support/SourceGit`     |
 
 > [!TIP]
-> You can open the app data dir from the main menu.
+> You can open this data storage directory from the main menu.
 
 For **Windows** users:
 
@@ -80,7 +80,8 @@ For **Windows** users:
   scoop bucket add extras
   scoop install sourcegit
   ```
-* Portable versions can be found in [Releases](https://github.com/sourcegit-scm/sourcegit/releases/latest)
+* Pre-built binaries can be found in [Releases](https://github.com/sourcegit-scm/sourcegit/releases/latest)
+* You can run `dotnet publish -c Release -r win-x64 -p:EnablePortable=true -o $YOUR_PUBLISH_DIR .\src\SourceGit.csproj` to build a portable version.
 
 For **macOS** users:
 
@@ -159,7 +160,7 @@ This app supports open repository in external tools listed in the table below.
 
 > [!NOTE]
 > This app will try to find those tools based on some pre-defined or expected locations automatically. If you are using one portable version of these tools, it will not be detected by this app.
-> To solve this problem you can add a file named `external_editors.json` in app data dir and provide the path directly. For example:
+> To solve this problem you can add a file named `external_editors.json` in app data storage directory and provide the path directly. For example:
 ```json
 {
     "tools": {

src/Native/OS.cs

@@ -1,5 +1,8 @@
 using System;
 using System.Collections.Generic;
+#if ENABLE_PORTABLE
+using System.Diagnostics;
+#endif
 using System.IO;
 
 using Avalonia;
@@ -55,6 +58,16 @@ public static void SetupApp(AppBuilder builder)
 
         public static void SetupDataDir()
         {
+#if ENABLE_PORTABLE
+            if (OperatingSystem.IsWindows())
+            {
+                var execFile = Process.GetCurrentProcess().MainModule!.FileName;
+                DataDir = Path.Combine(Path.GetDirectoryName(execFile), "data");
+                if (!Directory.Exists(DataDir))
+                    Directory.CreateDirectory(DataDir);
+                return;
+            }
+#endif
             var osAppDataDir = Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);
             if (string.IsNullOrEmpty(osAppDataDir))
                 DataDir = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".sourcegit");

src/SourceGit.csproj

@@ -30,6 +30,10 @@
     <DefineConstants>$(DefineConstants);DISABLE_UPDATE_DETECTION</DefineConstants>
   </PropertyGroup>
 
+  <PropertyGroup Condition="'$(EnablePortable)' == 'true'">
+    <DefineConstants>$(DefineConstants);ENABLE_PORTABLE</DefineConstants>
+  </PropertyGroup>
+
   <ItemGroup>
     <AvaloniaResource Include="App.ico" />
     <AvaloniaResource Include="Resources/Fonts/*" />