gistfile1.cs

using System.Text;

namespace Yzorg.Gist {

    class NoteBuilder : IDisposable {
        StringBuilder _note;
        Func<string> _get;
        Action<string> _set;

        public NoteBuilder(Func<string> get, Action<string> set) {
            _get = get;
            _set = set;
        }

        public StringBuilder Note {
            get {
                if (_note == null) {
                    _note = new StringBuilder(_get());
                    if (_note.Length > 0)
                        _note.AppendLine();
                }
                return _note;
            }
        }

        public void Dispose() {
            if (_note != null && _note.Length >= 2) {
                if (_note[_note.Length-1] == '\n')
                    _note.Length -= 2; // remove trailing \r\n
                _set(_note.ToString());
                _note = null;
            }
        }
    }
}