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https://github.com/Kareadita/Kavita.git
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591b574706
* Added a lot of tests * More tests! Added a Parser.NormalizePath to normalize all paths within Kavita. * Fixed a bug where MarkChaptersAsUnread implementation wasn't consistent between different files and lead to extra row generation for no reason. * Added more unit tests * Found a better implementation for Natural Sorting. Added tests and validate it works. Next commit will swap out natural Sort for new Extension. * Replaced NaturalSortComparer with OrderByNatural. * Drastically simplified and sped up FindFirstEntry for finding cover images in archives * Initial fix for a epub bug where metadata defines key as absolute path but document uses a relative path. We now have a hack to correct for the epub.
31 lines
1.2 KiB
C#
31 lines
1.2 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text.RegularExpressions;
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namespace API.Extensions
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{
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public static class EnumerableExtensions
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{
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private static readonly Regex Regex = new Regex(@"\d+", RegexOptions.Compiled, TimeSpan.FromMilliseconds(500));
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/// <summary>
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/// A natural sort implementation
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/// </summary>
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/// <param name="items">IEnumerable to process</param>
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/// <param name="selector">Function that produces a string. Does not support null values</param>
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/// <param name="stringComparer">Defaults to CurrentCulture</param>
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/// <typeparam name="T"></typeparam>
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/// <returns>Sorted Enumerable</returns>
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public static IEnumerable<T> OrderByNatural<T>(this IEnumerable<T> items, Func<T, string> selector, StringComparer stringComparer = null)
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{
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var maxDigits = items
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.SelectMany(i => Regex.Matches(selector(i))
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.Select(digitChunk => (int?)digitChunk.Value.Length))
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.Max() ?? 0;
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return items.OrderBy(i => Regex.Replace(selector(i), match => match.Value.PadLeft(maxDigits, '0')), stringComparer ?? StringComparer.CurrentCulture);
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}
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}
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}
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