79 lines
2.4 KiB
C#
79 lines
2.4 KiB
C#
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using System.Text.RegularExpressions;
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namespace E002_DiscordUriParser;
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public partial class DiscordUrlParser
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{
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private static readonly Regex Regex = GetUrlRegex();
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public static (ulong, ulong, ulong) UsingRegex(string input)
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{
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Match match = Regex.Match(input);
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if (!match.Success)
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{
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return (0, 0, 0);
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}
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return (ulong.Parse(match.Groups[1].Value), ulong.Parse(match.Groups[2].Value), ulong.Parse(match.Groups[3].Value));
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}
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public static (ulong, ulong, ulong) UsingUri(string input)
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{
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string[] words = input.Split(' ');
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foreach (string word in words)
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{
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if (!Uri.IsWellFormedUriString(word, UriKind.Absolute))
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{
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continue;
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}
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var uri = new Uri(word);
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string host = uri.Host;
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if (host.IndexOf('.') != host.LastIndexOf('.'))
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{
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// fuck your subdomains
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host = host[(host.LastIndexOf('.', host.LastIndexOf('.', host.Length - 1) - 1) + 1)..];
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}
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if (host != "discord.com")
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{
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continue;
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}
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string path = uri.AbsolutePath;
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if (!path.StartsWith("/channels/"))
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{
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continue;
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}
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path = path["/channels/".Length..];
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int firstSeparatorIndex = path.IndexOf('/');
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if (firstSeparatorIndex == -1)
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{
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continue;
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}
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int secondSeparatorIndex = path.IndexOf('/', firstSeparatorIndex + 1);
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if (secondSeparatorIndex == -1)
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{
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continue;
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}
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if (ulong.TryParse(path[..firstSeparatorIndex], out ulong guild)
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&& ulong.TryParse(path[(firstSeparatorIndex + 1)..secondSeparatorIndex], out ulong channel)
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&& ulong.TryParse(path[(secondSeparatorIndex + 1)..], out ulong message))
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{
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return (guild, channel, message);
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}
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}
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return (0, 0, 0);
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}
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/*lang=regex*/
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private const string UrlRegexPattern = @"https://(?:www\.|canary\.|beta\.)?discord.com/channels/([0-9]+)/([0-9]+)/([0-9]+)/?";
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[GeneratedRegex(UrlRegexPattern, RegexOptions.IgnoreCase | RegexOptions.Compiled, "en-GB")]
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private static partial Regex GetUrlRegex();
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}
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