// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence. // See the LICENCE file in the repository root for full licence text. using System; using System.Diagnostics.CodeAnalysis; using System.Text.RegularExpressions; namespace osu.Game.Rulesets.Edit { public static class EditorTimestampParser { /// <summary> /// Used for parsing in contexts where we don't want e.g. normal times of day to be parsed as timestamps (e.g. chat) /// Original osu-web regex: /// https://github.com/ppy/osu-web/blob/3b1698639244cfdaf0b41c68bfd651ea729ec2e3/resources/js/utils/beatmapset-discussion-helper.ts#L78 /// </summary> /// <example> /// 00:00:000 (...) - test /// </example> public static readonly Regex TIME_REGEX_STRICT = new Regex(@"\b(((?<minutes>\d{2,}):(?<seconds>[0-5]\d)[:.](?<milliseconds>\d{3}))(?<selection>\s\([^)]+\))?)", RegexOptions.Compiled); /// <summary> /// Used for editor-specific context wherein we want to try as hard as we can to process user input as a timestamp. /// </summary> /// <example> /// <list type="bullet"> /// <item>1 - parses to 00:00:001 (bare numbers are treated as milliseconds)</item> /// <item>1:2 - parses to 01:02:000</item> /// <item>1:02 - parses to 01:02:000</item> /// <item>1:92 - does not parse</item> /// <item>1:02:3 - parses to 01:02:003</item> /// <item>1:02:300 - parses to 01:02:300</item> /// <item>1:02:300 (1,2,3) - parses to 01:02:300 with selection</item> /// </list> /// </example> private static readonly Regex time_regex_lenient = new Regex( @"^(((?<minutes>\d{1,3}):(?<seconds>([0-5]?\d))([:.](?<milliseconds>\d{0,3}))?)(?<selection>\s\([^)]+\))?)(?<suffix>\s-.*)?$", RegexOptions.Compiled | RegexOptions.Singleline ); public static bool TryParse(string timestamp, [NotNullWhen(true)] out TimeSpan? parsedTime, out string? parsedSelection) { if (double.TryParse(timestamp, out double msec)) { parsedTime = TimeSpan.FromMilliseconds(msec); parsedSelection = null; return true; } Match match = time_regex_lenient.Match(timestamp); if (!match.Success) { parsedTime = null; parsedSelection = null; return false; } int timeMin, timeSec, timeMsec; int.TryParse(match.Groups[@"minutes"].Value, out timeMin); int.TryParse(match.Groups[@"seconds"].Value, out timeSec); int.TryParse(match.Groups[@"milliseconds"].Value, out timeMsec); // somewhat sane limit for timestamp duration (10 hours). if (timeMin >= 600) { parsedTime = null; parsedSelection = null; return false; } parsedTime = TimeSpan.FromMinutes(timeMin) + TimeSpan.FromSeconds(timeSec) + TimeSpan.FromMilliseconds(timeMsec); parsedSelection = match.Groups[@"selection"].Value.Trim(); parsedSelection = !string.IsNullOrEmpty(parsedSelection) ? parsedSelection[1..^1] : null; return true; } } }