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55 lines
1.7 KiB
C#
55 lines
1.7 KiB
C#
using System;
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using System.Globalization;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace MediaBrowser.Controller.Extensions
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{
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/// <summary>
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/// Class BaseExtensions.
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/// </summary>
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public static class StringExtensions
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{
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public static string RemoveDiacritics(this string text)
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{
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if (text == null)
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{
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throw new ArgumentNullException(nameof(text));
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}
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var chars = Normalize(text, NormalizationForm.FormD)
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.Where(ch => CharUnicodeInfo.GetUnicodeCategory(ch) != UnicodeCategory.NonSpacingMark);
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return Normalize(string.Concat(chars), NormalizationForm.FormC);
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}
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private static string Normalize(string text, NormalizationForm form, bool stripStringOnFailure = true)
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{
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if (stripStringOnFailure)
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{
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try
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{
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return text.Normalize(form);
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}
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catch (ArgumentException)
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{
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// will throw if input contains invalid unicode chars
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// https://mnaoumov.wordpress.com/2014/06/14/stripping-invalid-characters-from-utf-16-strings/
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text = Regex.Replace(text, "([\ud800-\udbff](?![\udc00-\udfff]))|((?<![\ud800-\udbff])[\udc00-\udfff])", "");
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return Normalize(text, form, false);
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}
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}
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try
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{
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return text.Normalize(form);
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}
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catch (ArgumentException)
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{
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// if it still fails, return the original text
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return text;
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}
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}
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}
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}
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