ExtensionMethods.cs

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namespace System.Xml.Extensions;
 
internal static class ExtensionMethods
{
    internal static Uri ToUri(string s)
    {
        if (s != null && s.Length > 0)
        {
            s = s.Trim(' ', '\t', '\n', '\r');
            if (s.Length == 0 || s.IndexOf("##", StringComparison.Ordinal) != -1)
            {
                throw new FormatException(System.SR.Format(System.SR.XmlConvert_BadFormat, s, "Uri"));
            }
        }
        if (!Uri.TryCreate(s, UriKind.RelativeOrAbsolute, out Uri result))
        {
            throw new FormatException(System.SR.Format(System.SR.XmlConvert_BadFormat, s, "Uri"));
        }
        return result;
    }
}