HttpEncoderUtility.cs

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using System.Diagnostics.CodeAnalysis;
 
namespace System.Web.Util;
 
internal static class HttpEncoderUtility
{
    public static bool IsUrlSafeChar(char ch)
    {
        if ((ch >= 'a' && ch <= 'z') || (ch >= 'A' && ch <= 'Z') || (ch >= '0' && ch <= '9'))
        {
            return true;
        }
        switch (ch)
        {
        case '!':
        case '(':
        case ')':
        case '*':
        case '-':
        case '.':
        case '_':
            return true;
        default:
            return false;
        }
    }
 
    [return: NotNullIfNotNull("str")]
    internal static string UrlEncodeSpaces(string str)
    {
        if (str == null || !str.Contains(' '))
        {
            return str;
        }
        return str.Replace(" ", "%20");
    }
}