ReviewR.Diff.DiffReader.ReadHunk C# (CSharp) Method

        private static DiffHunk ReadHunk(LineReader reader)
        {
            // Read hunk header
            string header = reader.Current;
            if (String.IsNullOrEmpty(header))
            {
                return null;
            }
            Match m = HunkHeaderRegex.Match(header);
            if (!m.Success)
            {
                // End of file diff
                return null;
            }
            reader.NextLine();

            SourceCoordinate original = ReadSourceCoord(m.Groups["l1"].Value, m.Groups["c1"].Value);
            SourceCoordinate modified = ReadSourceCoord(m.Groups["l2"].Value, m.Groups["c2"].Value);
            string comment = m.Groups["c"].Value.Trim();
            DiffHunk hunk = new DiffHunk(original, modified, comment);

            LineDiff line;
            while ((line = ReadLine(reader)) != null)
            {
                hunk.Lines.Add(line);
            }
            return hunk;
        }