using System; using System.Collections.Generic; using System.Text; #if !NET20 using System.Dynamic; #endif namespace Apewer { /// <summary>文本字典模型。</summary> [Serializable] public class TextSet #if !NET20 : DynamicObject #endif { [NonSerialized] private const string Null = ""; private Dictionary<string, string> _origin; private bool _autotrim = false; private bool _locked = false; /// <summary>获取或设置字典内容。</summary> public string this[string key] { get { return Get(key); } set { Set(key, value); } } /// <summary>获取字典。</summary> internal Dictionary<string, string> Origin { get { return _origin; } } internal bool Locked { get { return _locked; } set { _locked = value; } } private void Constructor(bool autotrim, Dictionary<string, string> origin) { _origin = new Dictionary<string, string>(); _autotrim = autotrim; if (origin != null) { foreach (var kvp in origin) { var key = kvp.Key; if (_autotrim && key.Length > 0) key = key.Trim(); if (_origin.ContainsKey(key)) continue; var value = kvp.Value; if (_autotrim && value.Length > 0) value = value.Trim(); _origin.Add(key, kvp.Value ?? ""); } } } /// <summary>构造函数。</summary> public TextSet(bool autotrim = false) { Constructor(autotrim, null); } /// <summary>构造函数:从指定字典中导入。</summary> public TextSet(Dictionary<string, string> origin, bool autotrim) { Constructor(autotrim, origin); } /// <summary>构造函数:从指定实例中导入。</summary> public TextSet(TextSet origin, bool autotrim) { Constructor(autotrim, (origin == null) ? null : origin.Origin); } /// <summary>构造函数:从指定实例中导入。</summary> public TextSet(ObjectSet<string> origin, bool autotrim) { Constructor(autotrim, (origin == null) ? null : origin.Origin); } private string Get(string key) { var contains = false; return Get(key, ref contains); } private string Get(string key, ref bool contains) { var k = string.IsNullOrEmpty(key) ? "" : ((_autotrim) ? key.Trim() : key); var value = Null; lock (_origin) { contains = _origin.ContainsKey(k); if (contains) value = _origin[k]; } return value ?? Null; } private bool Set(string key, string value) { if (_locked) return false; var k = string.IsNullOrEmpty(key) ? "" : ((_autotrim) ? key.Trim() : key); var v = string.IsNullOrEmpty(value) ? "" : ((_autotrim) ? value.Trim() : value); lock (_origin) { if (_origin.ContainsKey(k)) { _origin[k] = v ?? Null; } else { _origin.Add(k, v); } } return true; } #if !NET20 /// <summary></summary> public override bool TryGetMember(GetMemberBinder binder, out object result) { var contains = false; result = Get(binder.Name, ref contains); return contains; } /// <summary></summary> public override bool TrySetMember(SetMemberBinder binder, object value) { return Set(binder.Name, value as string); } #endif } }