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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
}
}