using System;
using System.Collections;
using System.Web;
namespace SPSolutions
{
	public static class StringUtil
	{
		public static string ToString(object objInput, string defaultValue)
		{
			if (objInput == null)
			{
				return defaultValue;
			}
			string text = objInput.ToString();
			if (!string.IsNullOrEmpty(text))
			{
				return text;
			}
			return defaultValue;
		}
		public static string ReplaceDoubleSquareBraceTokens(string subject, Hashtable tokens)
		{
			return StringUtil.ReplaceTokens(subject, "[[{0}]]", tokens);
		}
		public static string ReplaceSquareBraceTokens(string subject, Hashtable tokens)
		{
			return StringUtil.ReplaceTokens(subject, "[{0}]", tokens);
		}
		public static string ReplaceCurlyBraceTokens(string subject, Hashtable tokens)
		{
			return StringUtil.ReplaceTokens(subject, "{{{0}}}", tokens);
		}
		public static string ReplaceTokens(string subject, string tokenFormat, Hashtable tokens)
		{
			foreach (DictionaryEntry dictionaryEntry in tokens)
			{
				if (dictionaryEntry.Key is string && dictionaryEntry.Value is string)
				{
					string token = string.Format(tokenFormat, (string)dictionaryEntry.Key);
					Hashtable tokenVariants = StringUtil.GetTokenVariants(token);
					subject = subject.Replace((string)tokenVariants["normal"], (string)dictionaryEntry.Value);
					subject = subject.Replace((string)tokenVariants["normal_lower"], (string)dictionaryEntry.Value);
					subject = subject.Replace((string)tokenVariants["normal_upper"], (string)dictionaryEntry.Value);
					subject = subject.Replace((string)tokenVariants["urlEncoded"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["urlEncoded_lower"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["urlEncoded_upper"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["normal_lower_urlEncoded_lower"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["normal_lower_urlEncoded_upper"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["normal_upper_urlEncoded_lower"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["normal_upper_urlEncoded_upper"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["normal_urlEncoded_lower"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
					subject = subject.Replace((string)tokenVariants["normal_urlEncoded_upper"], HttpUtility.UrlEncode((string)dictionaryEntry.Value));
				}
			}
			return subject;
		}
		private static Hashtable GetTokenVariants(string token)
		{
			return new Hashtable
			{

				{
					"normal",
					token
				},

				{
					"normal_lower",
					token.ToLowerInvariant()
				},

				{
					"normal_upper",
					token.ToUpperInvariant()
				},

				{
					"urlEncoded",
					StringUtil.GetUrlEncodedToken(token)
				},

				{
					"urlEncoded_lower",
					StringUtil.GetUrlEncodedToken(token).ToLowerInvariant()
				},

				{
					"urlEncoded_upper",
					StringUtil.GetUrlEncodedToken(token).ToUpperInvariant()
				},

				{
					"normal_urlEncoded_lower",
					token.Replace("%7B", "%7b").Replace("%7D", "%7d").Replace("{", "%7b").Replace("}", "%7d")
				},

				{
					"normal_urlEncoded_upper",
					token.Replace("%7b", "%7B").Replace("%7d", "%7D").Replace("{", "%7B").Replace("}", "%7D")
				},

				{
					"normal_lower_urlEncoded_lower",
					token.ToLowerInvariant().Replace("%7B", "%7b").Replace("%7D", "%7d").Replace("{", "%7b").Replace("}", "%7d")
				},

				{
					"normal_lower_urlEncoded_upper",
					token.ToUpperInvariant().Replace("%7b", "%7B").Replace("%7d", "%7D").Replace("{", "%7B").Replace("}", "%7D")
				},

				{
					"normal_upper_urlEncoded_lower",
					token.ToLowerInvariant().Replace("%7B", "%7b").Replace("%7D", "%7d")
				},

				{
					"normal_upper_urlEncoded_upper",
					token.ToUpperInvariant().Replace("%7b", "%7B").Replace("%7d", "%7D")
				}
			};
		}
		private static string GetUrlEncodedToken(string token)
		{
			return HttpUtility.UrlEncode(token);
		}
	}
}