enhance: ensure sourcegit_rebase_jobs.json only being used when orig-head and onto are both matched

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

Author: love-linger

src/App.axaml.cs

@@ -6,6 +6,7 @@
 using System.Reflection;
 using System.Text;
 using System.Text.Json;
+using System.Text.RegularExpressions;
 using System.Threading;
 using System.Threading.Tasks;
 
@@ -431,21 +432,37 @@ private static bool TryLaunchAsRebaseMessageEditor(string[] args, out int exitCo
                 return true;
 
             var gitDir = Path.GetDirectoryName(file)!;
+            var origHeadFile = Path.Combine(gitDir, "rebase-merge", "orig-head");
+            var ontoFile = Path.Combine(gitDir, "rebase-merge", "onto");
+            var doneFile = Path.Combine(gitDir, "rebase-merge", "done");
             var jobsFile = Path.Combine(gitDir, "sourcegit_rebase_jobs.json");
-            if (!File.Exists(jobsFile))
+            if (!File.Exists(ontoFile) || !File.Exists(origHeadFile) || !File.Exists(doneFile) || !File.Exists(jobsFile))
                 return true;
 
+            var origHead = File.ReadAllText(origHeadFile).Trim();
+            var onto = File.ReadAllText(ontoFile).Trim();
             var collection = JsonSerializer.Deserialize(File.ReadAllText(jobsFile), JsonCodeGen.Default.InteractiveRebaseJobCollection);
-            var doneFile = Path.Combine(gitDir, "rebase-merge", "done");
-            if (!File.Exists(doneFile))
+            if (!collection.Onto.Equals(onto) || !collection.OrigHead.Equals(origHead))
                 return true;
 
-            var done = File.ReadAllText(doneFile).Split(new[] { '\n', '\r' }, StringSplitOptions.RemoveEmptyEntries);
-            if (done.Length > collection.Jobs.Count)
+            var done = File.ReadAllText(doneFile).Trim().Split([ '\r', '\n' ], StringSplitOptions.RemoveEmptyEntries);
+            if (done.Length == 0)
                 return true;
 
-            var job = collection.Jobs[done.Length - 1];
-            File.WriteAllText(file, job.Message);
+            var current = done[^1].Trim();
+            var match = REG_REBASE_TODO().Match(current);
+            if (!match.Success)
+                return true;
+
+            var sha = match.Groups[1].Value;
+            foreach (var job in collection.Jobs)
+            {
+                if (job.SHA.StartsWith(sha))
+                {
+                    File.WriteAllText(file, job.Message);
+                    break;
+                }
+            }
 
             return true;
         }
@@ -621,6 +638,9 @@ private string FixFontFamilyName(string input)
             return trimmed.Count > 0 ? string.Join(',', trimmed) : string.Empty;
         }
 
+        [GeneratedRegex(@"^[a-z]+\s+([a-fA-F0-9]{4,40})(\s+.*)?$")]
+        private static partial Regex REG_REBASE_TODO();
+
         private Models.IpcChannel _ipcChannel = null;
         private ViewModels.Launcher _launcher = null;
         private ResourceDictionary _activeLocale = null;

src/Models/InteractiveRebase.cs

@@ -27,6 +27,8 @@ public class InteractiveRebaseJob
 
     public class InteractiveRebaseJobCollection
     {
+        public string OrigHead { get; set; } = string.Empty;
+        public string Onto { get; set; } = string.Empty;
         public List<InteractiveRebaseJob> Jobs { get; set; } = new List<InteractiveRebaseJob>();
     }
 }

src/ViewModels/InProgressContexts.cs

@@ -105,8 +105,6 @@ public Models.Commit Onto
 
         public RebaseInProgress(Repository repo) : base(repo.FullPath, "rebase")
         {
-            _gitDir = repo.GitDir;
-
             HeadName = File.ReadAllText(Path.Combine(repo.GitDir, "rebase-merge", "head-name")).Trim();
             if (HeadName.StartsWith("refs/heads/"))
                 HeadName = HeadName.Substring(11);
@@ -129,34 +127,14 @@ public RebaseInProgress(Repository repo) : base(repo.FullPath, "rebase")
 
         public override bool Continue()
         {
-            var succ = new Commands.Command()
+            return new Commands.Command()
             {
                 WorkingDirectory = _repo,
                 Context = _repo,
                 Editor = Commands.Command.EditorType.RebaseEditor,
                 Args = $"rebase --continue",
             }.Exec();
-
-            if (succ)
-            {
-                var jobsFile = Path.Combine(_gitDir, "sourcegit_rebase_jobs.json");
-                var rebaseMergeHead = Path.Combine(_gitDir, "REBASE_HEAD");
-                var rebaseMergeFolder = Path.Combine(_gitDir, "rebase-merge");
-                var rebaseApplyFolder = Path.Combine(_gitDir, "rebase-apply");
-                if (File.Exists(jobsFile))
-                    File.Delete(jobsFile);
-                if (File.Exists(rebaseMergeHead))
-                    File.Delete(rebaseMergeHead);
-                if (Directory.Exists(rebaseMergeFolder))
-                    Directory.Delete(rebaseMergeFolder);
-                if (Directory.Exists(rebaseApplyFolder))
-                    Directory.Delete(rebaseApplyFolder);
-            }
-
-            return succ;
-        }
-
-        private string _gitDir;
+        }
     }
 
     public class RevertInProgress : InProgressContext

src/ViewModels/InteractiveRebase.cs

@@ -162,6 +162,8 @@ public Task<bool> Start()
 
             var saveFile = Path.Combine(_repo.GitDir, "sourcegit_rebase_jobs.json");
             var collection = new Models.InteractiveRebaseJobCollection();
+            collection.OrigHead = _repo.CurrentBranch.Head;
+            collection.Onto = On.SHA;
             for (int i = Items.Count - 1; i >= 0; i--)
             {
                 var item = Items[i];
@@ -178,9 +180,6 @@ public Task<bool> Start()
             return Task.Run(() =>
             {
                 var succ = new Commands.InteractiveRebase(_repo.FullPath, On.SHA).Use(log).Exec();
-                if (succ)
-                    File.Delete(saveFile);
-
                 log.Complete();
                 Dispatcher.UIThread.Invoke(() => _repo.SetWatcherEnabled(true));
                 return succ;