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using System; using System.Collections.Generic; using System.Text; using System.Collections;
#if !NET20
using System.Dynamic; #endif
namespace Apewer {
/// <summary>文本字典模型。</summary>
[Serializable]
#if NET20
public partial class TextSet #else
public partial class TextSet : DynamicObject
#endif
{
const string Null = ""; bool _autotrim = false; bool _locked = false; Dictionary<string, string> _origin;
#region properties
/// <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; } }
#endregion
#region ctor
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 ?? ""); } } }
#endregion
#region methods
/// <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; }
#endregion
#region operator
/// <summary></summary>
public static implicit operator TextSet(Dictionary<string, string> dictionary) => new TextSet(dictionary, false);
/// <summary></summary>
public static implicit operator Dictionary<string, string>(TextSet set) => set?._origin;
#endregion
#region dynamic
#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); }
/// <summary></summary>
public override IEnumerable<string> GetDynamicMemberNames() { return _origin.Keys; }
#endif
#endregion
}
}
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