refactor<*>: rewrite all with AvaloniaUI

src/Commands/CompareRevisions.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    public class CompareRevisions : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
+
+        public CompareRevisions(string repo, string start, string end) {
+            WorkingDirectory = repo;
+            Context = repo;
+            Args = $"diff --name-status {start} {end}";
+        }
+
+        public List<Models.Change> Result() {
+            Exec();
+            _changes.Sort((l, r) => l.Path.CompareTo(r.Path));
+            return _changes;
+        }
+
+        protected override void OnReadline(string line) {
+            var match = REG_FORMAT.Match(line);
+            if (!match.Success) return;
+
+            var change = new Models.Change() { Path = match.Groups[2].Value };
+            var status = match.Groups[1].Value;
+
+            switch (status[0]) {
+            case 'M': change.Set(Models.ChangeState.Modified); _changes.Add(change); break;
+            case 'A': change.Set(Models.ChangeState.Added); _changes.Add(change); break;
+            case 'D': change.Set(Models.ChangeState.Deleted); _changes.Add(change); break;
+            case 'R': change.Set(Models.ChangeState.Renamed); _changes.Add(change); break;
+            case 'C': change.Set(Models.ChangeState.Copied); _changes.Add(change); break;
+            }
+        }
+
+        private List<Models.Change> _changes = new List<Models.Change>();
+    }
+}