enhance: append character U+26D4 to line when \ No newline at end of file is found in git diff output (#1197)

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

Author: love-linger

src/Commands/Diff.cs

@@ -149,15 +149,17 @@ private void ParseLine(string line)
 
                     _oldLine = int.Parse(match.Groups[1].Value);
                     _newLine = int.Parse(match.Groups[2].Value);
-                    _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Indicator, line, 0, 0));
+                    _last = new Models.TextDiffLine(Models.TextDiffLineType.Indicator, line, 0, 0);
+                    _result.TextDiff.Lines.Add(_last);
                 }
             }
             else
             {
                 if (line.Length == 0)
                 {
                     ProcessInlineHighlights();
-                    _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Normal, "", _oldLine, _newLine));
+                    _last = new Models.TextDiffLine(Models.TextDiffLineType.Normal, "", _oldLine, _newLine);
+                    _result.TextDiff.Lines.Add(_last);
                     _oldLine++;
                     _newLine++;
                     return;
@@ -173,7 +175,8 @@ private void ParseLine(string line)
                         return;
                     }
 
-                    _deleted.Add(new Models.TextDiffLine(Models.TextDiffLineType.Deleted, line.Substring(1), _oldLine, 0));
+                    _last = new Models.TextDiffLine(Models.TextDiffLineType.Deleted, line.Substring(1), _oldLine, 0);
+                    _deleted.Add(_last);
                     _oldLine++;
                 }
                 else if (ch == '+')
@@ -185,7 +188,8 @@ private void ParseLine(string line)
                         return;
                     }
 
-                    _added.Add(new Models.TextDiffLine(Models.TextDiffLineType.Added, line.Substring(1), 0, _newLine));
+                    _last = new Models.TextDiffLine(Models.TextDiffLineType.Added, line.Substring(1), 0, _newLine);
+                    _added.Add(_last);
                     _newLine++;
                 }
                 else if (ch != '\\')
@@ -196,7 +200,8 @@ private void ParseLine(string line)
                     {
                         _oldLine = int.Parse(match.Groups[1].Value);
                         _newLine = int.Parse(match.Groups[2].Value);
-                        _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Indicator, line, 0, 0));
+                        _last = new Models.TextDiffLine(Models.TextDiffLineType.Indicator, line, 0, 0);
+                        _result.TextDiff.Lines.Add(_last);
                     }
                     else
                     {
@@ -207,11 +212,16 @@ private void ParseLine(string line)
                             return;
                         }
 
-                        _result.TextDiff.Lines.Add(new Models.TextDiffLine(Models.TextDiffLineType.Normal, line.Substring(1), _oldLine, _newLine));
+                        _last = new Models.TextDiffLine(Models.TextDiffLineType.Normal, line.Substring(1), _oldLine, _newLine);
+                        _result.TextDiff.Lines.Add(_last);
                         _oldLine++;
                         _newLine++;
                     }
                 }
+                else if (line.Equals("\\ No newline at end of file", StringComparison.Ordinal))
+                {
+                    _last.NoNewLineEndOfFile = true;
+                }
             }
         }
 
@@ -262,6 +272,7 @@ private void ProcessInlineHighlights()
         private readonly Models.DiffResult _result = new Models.DiffResult();
         private readonly List<Models.TextDiffLine> _deleted = new List<Models.TextDiffLine>();
         private readonly List<Models.TextDiffLine> _added = new List<Models.TextDiffLine>();
+        private Models.TextDiffLine _last = null;
         private int _oldLine = 0;
         private int _newLine = 0;
     }

src/Models/DiffResult.cs

@@ -30,6 +30,7 @@ public class TextDiffLine
         public int OldLineNumber { get; set; } = 0;
         public int NewLineNumber { get; set; } = 0;
         public List<TextInlineRange> Highlights { get; set; } = new List<TextInlineRange>();
+        public bool NoNewLineEndOfFile { get; set; } = false;
 
         public string OldLine => OldLineNumber == 0 ? string.Empty : OldLineNumber.ToString();
         public string NewLine => NewLineNumber == 0 ? string.Empty : NewLineNumber.ToString();

src/Views/TextDiffView.axaml.cs

@@ -1253,13 +1253,16 @@ protected override void OnDataContextChanged(EventArgs e)
                     {
                         builder.Append(line.Content.Substring(0, 1000));
                         builder.Append($"...({line.Content.Length - 1000} character trimmed)");
-                        builder.Append('\n');
                     }
                     else
                     {
                         builder.Append(line.Content);
-                        builder.Append('\n');
                     }
+
+                    if (line.NoNewLineEndOfFile)
+                        builder.Append("\u26D4");
+                    
+                    builder.Append('\n');
                 }
 
                 Text = builder.ToString();
@@ -1493,13 +1496,16 @@ protected override void OnDataContextChanged(EventArgs e)
                     {
                         builder.Append(line.Content.Substring(0, 1000));
                         builder.Append($"...({line.Content.Length - 1000} characters trimmed)");
-                        builder.Append('\n');
                     }
                     else
                     {
                         builder.Append(line.Content);
-                        builder.Append('\n');
                     }
+
+                    if (line.NoNewLineEndOfFile)
+                        builder.Append("\u26D4");
+
+                    builder.Append('\n');
                 }
 
                 Text = builder.ToString();