64 lines
1.9 KiB
C#
64 lines
1.9 KiB
C#
using System;
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using System.Security.Cryptography;
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namespace PluralKit.Core
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{
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public static class StringUtils
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{
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public static string GenerateHid()
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{
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var rnd = new Random();
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var charset = "abcdefghijklmnopqrstuvwxyz";
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string hid = "";
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for (int i = 0; i < 5; i++)
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{
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hid += charset[rnd.Next(charset.Length)];
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}
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return hid;
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}
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public static string GenerateToken()
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{
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var buf = new byte[48]; // Results in a 64-byte Base64 string (no padding)
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new RNGCryptoServiceProvider().GetBytes(buf);
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return Convert.ToBase64String(buf);
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}
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public static bool IsLongerThan(this string str, int length)
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{
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if (str != null) return str.Length > length;
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return false;
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}
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public static string ExtractCountryFlag(string flag)
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{
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if (flag.Length != 4) return null;
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try
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{
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var cp1 = char.ConvertToUtf32(flag, 0);
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var cp2 = char.ConvertToUtf32(flag, 2);
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if (cp1 < 0x1F1E6 || cp1 > 0x1F1FF) return null;
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if (cp2 < 0x1F1E6 || cp2 > 0x1F1FF) return null;
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return $"{(char) (cp1 - 0x1F1E6 + 'A')}{(char) (cp2 - 0x1F1E6 + 'A')}";
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}
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catch (ArgumentException)
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{
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return null;
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}
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}
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public static string NullIfEmpty(this string input)
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{
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if (input == null) return null;
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if (input.Trim().Length == 0) return null;
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return input;
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}
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public static bool EmptyOrNull(this string input)
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{
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if (input == null) return true;
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if (input.Trim().Length == 0) return true;
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return false;
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}
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}
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} |