refactor<*>: rewrite all codes...

src/Commands/StashChanges.cs

@@ -0,0 +1,38 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    /// <summary>
+    ///     查看Stash中的修改
+    /// </summary>
+    public class StashChanges : Command {
+        private static readonly Regex REG_FORMAT = new Regex(@"^(\s?[\w\?]{1,4})\s+(.+)$");
+        private List<Models.Change> changes = new List<Models.Change>();
+
+        public StashChanges(string repo, string sha) {
+            Cwd = repo;
+            Args = $"diff --name-status --pretty=format: {sha}^ {sha}";
+        }
+
+        public List<Models.Change> Result() {
+            Exec();
+            return changes;
+        }
+
+        public 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.Change.Status.Modified); changes.Add(change); break;
+            case 'A': change.Set(Models.Change.Status.Added); changes.Add(change); break;
+            case 'D': change.Set(Models.Change.Status.Deleted); changes.Add(change); break;
+            case 'R': change.Set(Models.Change.Status.Renamed); changes.Add(change); break;
+            case 'C': change.Set(Models.Change.Status.Copied); changes.Add(change); break;
+            }
+        }
+    }
+}