44 lines
1,009 B
C#
44 lines
1,009 B
C#
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/*
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* Copyright (c) 2019 ETH Zürich, Educational Development and Technology (LET)
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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using System;
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using System.Text;
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namespace SafeExamBrowser.UserInterface.Shared.Utilities
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{
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public static class UrlRandomizer
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{
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private const string DIGITS = "0123456789";
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private const string LETTERS = "abcdefghijklmnopqrstuvwxyz";
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public static string Randomize(string url)
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{
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var generator = new Random();
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var result = new StringBuilder();
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foreach (var character in url)
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{
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if (Char.IsDigit(character))
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{
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result.Append(DIGITS[generator.Next(DIGITS.Length)]);
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}
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else if (Char.IsLetter(character))
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{
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result.Append(LETTERS[generator.Next(LETTERS.Length)]);
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}
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else
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{
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result.Append(character);
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}
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}
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return result.ToString();
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}
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}
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}
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