60 lines
2.1 KiB
C#
60 lines
2.1 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace umbraco.cms.helpers
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{
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public class Casing
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{
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public const string VALID_ALIAS_CHARACTERS = "_-abcdefghijklmnopqrstuvwxyz1234567890";
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public const string INVALID_FIRST_CHARACTERS = "01234567890";
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/// <summary>
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/// A helper method to ensure that an Alias string doesn't contains any illegal characters
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/// which is defined in a private constant 'ValidCharacters' in this class.
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/// Conventions over configuration, baby. You can't touch this - MC Hammer!
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/// </summary>
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/// <param name="alias">The alias.</param>
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/// <returns>An alias guaranteed not to contain illegal characters</returns>
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public static string SafeAlias(string alias)
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{
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StringBuilder safeString = new StringBuilder();
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int aliasLength = alias.Length;
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for (int i = 0; i < aliasLength;i++ )
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{
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string currentChar = alias.Substring(i, 1);
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if (VALID_ALIAS_CHARACTERS.Contains(currentChar.ToLower()))
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{
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// check for camel (if previous character is a space, we'll upper case the current one
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if (i == 0 && INVALID_FIRST_CHARACTERS.Contains(currentChar.ToLower()))
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{
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currentChar = "";
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}
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else
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{
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if (i < aliasLength - 1 && i > 0 && alias.Substring(i - 1, 1) == " ")
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currentChar = currentChar.ToUpper();
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safeString.Append(currentChar);
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}
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}
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}
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return safeString.ToString();
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}
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public static string SafeAliasWithForcingCheck(string alias)
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{
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if (UmbracoSettings.ForceSafeAliases)
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{
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return SafeAlias(alias);
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}
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else
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{
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return alias;
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}
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}
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}
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}
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