refactor: rewrite git restore integration

Signed-off-by: leo <longshuang@msn.cn>

Author: love-linger

src/Commands/Discard.cs

@@ -36,7 +36,7 @@ public static void All(string repo, bool includeIgnored, Models.ICommandLog log)
                 });
             }
 
-            new Restore(repo, false) { Log = log }.Exec();
+            new Restore(repo) { Log = log }.Exec();
             if (includeIgnored)
                 new Clean(repo) { Log = log }.Exec();
         }
@@ -71,10 +71,20 @@ public static void Changes(string repo, List<Models.Change> changes, Models.ICom
                 });
             }
 
-            for (int i = 0; i < restores.Count; i += 10)
+            if (Native.OS.GitVersion >= Models.GitVersions.RESTORE_WITH_PATHSPECFILE)
             {
-                var count = Math.Min(10, restores.Count - i);
-                new Restore(repo, restores.GetRange(i, count), "--worktree --recurse-submodules") { Log = log }.Exec();
+                var tmpFile = Path.GetTempFileName();
+                File.WriteAllLines(tmpFile, restores);
+                new Restore(repo, tmpFile, "--worktree --recurse-submodules") { Log = log }.Exec();
+                File.Delete(tmpFile);
+            }
+            else
+            {
+                for (int i = 0; i < restores.Count; i += 32)
+                {
+                    var count = Math.Min(32, restores.Count - i);
+                    new Restore(repo, restores.GetRange(i, count), "--worktree --recurse-submodules") { Log = log }.Exec();
+                }
             }
         }
     }

src/Commands/Restore.cs

@@ -5,17 +5,23 @@ namespace SourceGit.Commands
 {
     public class Restore : Command
     {
-        public Restore(string repo, bool onlyStaged)
+        /// <summary>
+        ///     Only used to discard all changes in the working directory and staged area.
+        /// </summary>
+        /// <param name="repo"></param>
+        public Restore(string repo)
         {
             WorkingDirectory = repo;
             Context = repo;
-
-            if (onlyStaged)
-                Args = "restore --source=HEAD --staged .";
-            else
-                Args = "restore --source=HEAD --staged --worktree --recurse-submodules .";
+            Args = "restore --source=HEAD --staged --worktree --recurse-submodules .";
         }
 
+        /// <summary>
+        ///     Discard changes with git (&lt; 2.25.0) that does not support the `--pathspec-from-file` option.
+        /// </summary>
+        /// <param name="repo"></param>
+        /// <param name="files"></param>
+        /// <param name="extra"></param>
         public Restore(string repo, List<string> files, string extra)
         {
             WorkingDirectory = repo;
@@ -30,5 +36,24 @@ public Restore(string repo, List<string> files, string extra)
                 builder.Append(' ').Append('"').Append(f).Append('"');
             Args = builder.ToString();
         }
+
+        /// <summary>
+        ///     Discard changes with git (&gt;= 2.25.0) that supports the `--pathspec-from-file` option.
+        /// </summary>
+        /// <param name="repo"></param>
+        /// <param name="pathspecFile"></param>
+        /// <param name="extra"></param>
+        public Restore(string repo, string pathspecFile, string extra)
+        {
+            WorkingDirectory = repo;
+            Context = repo;
+
+            var builder = new StringBuilder();
+            builder.Append("restore ");
+            if (!string.IsNullOrEmpty(extra))
+                builder.Append(extra).Append(" ");
+            builder.Append("--pathspec-from-file=\"").Append(pathspecFile).Append('"');
+            Args = builder.ToString();
+        }
     }
 }

src/Models/GitVersions.cs

@@ -11,6 +11,11 @@ public static class GitVersions
         ///     The minimal version of Git that supports the `add` command with the `--pathspec-from-file` option.
         /// </summary>
         public static readonly System.Version ADD_WITH_PATHSPECFILE = new System.Version(2, 25, 0);
+        
+        /// <summary>
+        ///    The minimal version of Git that supports the `restore` command with the `--pathspec-from-file` option.
+        /// </summary>
+        public static readonly System.Version RESTORE_WITH_PATHSPECFILE = new System.Version(2, 25, 0);
 
         /// <summary>
         ///     The minimal version of Git that supports the `stash push` command with the `--pathspec-from-file` option.

src/ViewModels/StashChanges.cs

@@ -124,9 +124,9 @@ private bool StashWithChanges(List<Models.Change> changes, CommandLog log)
             }
             else
             {
-                for (int i = 0; i < changes.Count; i += 10)
+                for (int i = 0; i < changes.Count; i += 32)
                 {
-                    var count = Math.Min(10, changes.Count - i);
+                    var count = Math.Min(32, changes.Count - i);
                     var step = changes.GetRange(i, count);
                     succ = new Commands.Stash(_repo.FullPath).Use(log).Push(Message, step, KeepIndex);
                     if (!succ)

src/ViewModels/WorkingCopy.cs

@@ -1634,13 +1634,14 @@ private async void StageChanges(List<Models.Change> changes, Models.Change next)
                 foreach (var c in changes)
                     paths.Add(c.Path);
 
-                for (int i = 0; i < count; i += 10)
+                for (int i = 0; i < count; i += 32)
                 {
-                    var step = paths.GetRange(i, Math.Min(10, count - i));
+                    var step = paths.GetRange(i, Math.Min(32, count - i));
                     await Task.Run(() => new Commands.Add(_repo.FullPath, step).Use(log).Exec());
                 }
             }
             log.Complete();
+            
             _repo.MarkWorkingCopyDirtyManually();
             _repo.SetWatcherEnabled(true);
             IsStaging = false;
@@ -1664,15 +1665,26 @@ private async void UnstageChanges(List<Models.Change> changes, Models.Change nex
                 log.AppendLine("$ git update-index --index-info ");
                 await Task.Run(() => new Commands.UnstageChangesForAmend(_repo.FullPath, changes).Exec());
             }
-            else if (count == _staged.Count)
+            else if (Native.OS.GitVersion >= Models.GitVersions.RESTORE_WITH_PATHSPECFILE)
             {
-                await Task.Run(() => new Commands.Restore(_repo.FullPath, true).Use(log).Exec());
+                var paths = new List<string>();
+                foreach (var c in changes)
+                {
+                    paths.Add(c.Path);
+                    if (c.Index == Models.ChangeState.Renamed)
+                        paths.Add(c.OriginalPath);
+                }
+                
+                var tmpFile = Path.GetTempFileName();
+                File.WriteAllLines(tmpFile, paths);
+                await Task.Run(() => new Commands.Restore(_repo.FullPath, tmpFile, "--staged").Use(log).Exec());
+                File.Delete(tmpFile);
             }
             else
             {
-                for (int i = 0; i < count; i += 10)
+                for (int i = 0; i < count; i += 32)
                 {
-                    var step = changes.GetRange(i, Math.Min(10, count - i));
+                    var step = changes.GetRange(i, Math.Min(32, count - i));
                     var files = new List<string>();
                     foreach (var c in step)
                     {
@@ -1685,6 +1697,7 @@ private async void UnstageChanges(List<Models.Change> changes, Models.Change nex
                 }
             }
             log.Complete();
+            
             _repo.MarkWorkingCopyDirtyManually();
             _repo.SetWatcherEnabled(true);
             IsUnstaging = false;