osu/osu.Game/Utils/FormatUtils.cs

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// 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.Globalization;
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using Humanizer;
namespace osu.Game.Utils
{
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public static class FormatUtils
{
/// <summary>
/// Turns the provided accuracy into a percentage with 2 decimal places.
/// </summary>
/// <param name="accuracy">The accuracy to be formatted.</param>
/// <param name="formatProvider">An optional format provider.</param>
/// <returns>formatted accuracy in percentage</returns>
public static string FormatAccuracy(this double accuracy, IFormatProvider formatProvider = null)
{
// for the sake of display purposes, we don't want to show a user a "rounded up" percentage to the next whole number.
// ie. a score which gets 89.99999% shouldn't ever show as 90%.
// the reasoning for this is that cutoffs for grade increases are at whole numbers and displaying the required
// percentile with a non-matching grade is confusing.
accuracy = Math.Floor(accuracy * 10000) / 10000;
return accuracy.ToString("0.00%", formatProvider ?? CultureInfo.CurrentCulture);
}
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/// <summary>
/// Formats the supplied rank/leaderboard position in a consistent, simplified way.
/// </summary>
/// <param name="rank">The rank/position to be formatted.</param>
public static string FormatRank(this int rank) => rank.ToMetric(decimals: rank < 100_000 ? 1 : 0);
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}
}