feature<AssumeUnchanged>: supports update-index --[no]-assume-unchanged

src/Commands/AssumeUnchanged.cs

@@ -0,0 +1,60 @@
+using System.Collections.Generic;
+using System.Text.RegularExpressions;
+
+namespace SourceGit.Commands {
+    /// <summary>
+    ///     查看、添加或移除忽略变更文件
+    /// </summary>
+    public class AssumeUnchanged {
+        private string repo;
+
+        class ViewCommand : Command {
+            private static readonly Regex REG = new Regex(@"^(\w)\s+(.+)$");
+            private List<string> outs = new List<string>();
+
+            public ViewCommand(string repo) {
+                Cwd = repo;
+                Args = "ls-files -v";
+            }
+
+            public List<string> Result() {
+                Exec();
+                return outs;
+            }
+
+            public override void OnReadline(string line) {
+                var match = REG.Match(line);
+                if (!match.Success) return;
+
+                if (match.Groups[1].Value == "h") {
+                    outs.Add(match.Groups[2].Value);
+                }
+            }
+        }
+
+        class ModCommand : Command {
+            public ModCommand(string repo, string file, bool bAdd) {
+                var mode = bAdd ? "--assume-unchanged" : "--no-assume-unchanged";
+
+                Cwd = repo;
+                Args = $"update-index {mode} -- \"{file}\"";
+            }
+        }
+
+        public AssumeUnchanged(string repo) {
+            this.repo = repo;
+        }
+
+        public List<string> View() {
+            return new ViewCommand(repo).Result();
+        }
+
+        public void Add(string file) {
+            new ModCommand(repo, file, true).Exec();
+        }
+
+        public void Remove(string file) {
+            new ModCommand(repo, file, false).Exec();
+        }
+    }
+}