60 lines
1.7 KiB
C#
60 lines
1.7 KiB
C#
/*
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* Copyright (C) Alibaba Cloud Computing
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* All rights reserved.
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*
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* 版权所有 （C）阿里云计算有限公司
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*/
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using System;
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using System.Collections.Generic;
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using System.Reflection;
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namespace Aliyun.Api.LOG.Common.Utilities
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{
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/// <summary>
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/// Description of EnumUtils.
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/// </summary>
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internal static class EnumUtils
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{
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private static IDictionary<Enum, StringValueAttribute> _stringValues =
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new Dictionary<Enum, StringValueAttribute>();
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public static string GetStringValue(this Enum value)
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{
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string output = null;
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Type type = value.GetType();
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if (_stringValues.ContainsKey(value))
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{
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output = (_stringValues[value] as StringValueAttribute).Value;
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}
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else
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{
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FieldInfo fi = type.GetField(value.ToString());
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StringValueAttribute[] attrs =
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fi.GetCustomAttributes(typeof (StringValueAttribute),
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false) as StringValueAttribute[];
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if (attrs.Length > 0)
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{
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output = attrs[0].Value;
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// Put it in the cache.
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lock(_stringValues)
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{
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// Double check
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if (!_stringValues.ContainsKey(value))
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{
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_stringValues.Add(value, attrs[0]);
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}
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}
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}
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else
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{
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return value.ToString();
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}
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}
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return output;
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}
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}
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}
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