mirror of
https://github.com/jellyfin/jellyfin.git
synced 2024-09-06 19:37:55 +02:00
144 lines
4.7 KiB
C#
144 lines
4.7 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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namespace MediaBrowser.Controller.Sorting
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{
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public static class SortExtensions
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{
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public static IEnumerable<T> OrderByString<T>(this IEnumerable<T> list, Func<T, string> getName)
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{
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return list.OrderBy(getName, new AlphanumComparator());
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}
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public static IEnumerable<T> OrderByStringDescending<T>(this IEnumerable<T> list, Func<T, string> getName)
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{
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return list.OrderByDescending(getName, new AlphanumComparator());
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}
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public static IOrderedEnumerable<T> ThenByString<T>(this IOrderedEnumerable<T> list, Func<T, string> getName)
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{
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return list.ThenBy(getName, new AlphanumComparator());
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}
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public static IOrderedEnumerable<T> ThenByStringDescending<T>(this IOrderedEnumerable<T> list, Func<T, string> getName)
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{
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return list.ThenByDescending(getName, new AlphanumComparator());
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}
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private class AlphanumComparator : IComparer<string>
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{
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private enum ChunkType { Alphanumeric, Numeric };
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private static bool InChunk(char ch, char otherCh)
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{
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var type = ChunkType.Alphanumeric;
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if (char.IsDigit(otherCh))
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{
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type = ChunkType.Numeric;
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}
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if ((type == ChunkType.Alphanumeric && char.IsDigit(ch))
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|| (type == ChunkType.Numeric && !char.IsDigit(ch)))
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{
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return false;
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}
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return true;
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}
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public static int CompareValues(string s1, string s2)
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{
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if (s1 == null || s2 == null)
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{
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return 0;
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}
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int thisMarker = 0, thisNumericChunk = 0;
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int thatMarker = 0, thatNumericChunk = 0;
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while ((thisMarker < s1.Length) || (thatMarker < s2.Length))
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{
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if (thisMarker >= s1.Length)
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{
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return -1;
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}
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else if (thatMarker >= s2.Length)
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{
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return 1;
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}
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char thisCh = s1[thisMarker];
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char thatCh = s2[thatMarker];
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StringBuilder thisChunk = new StringBuilder();
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StringBuilder thatChunk = new StringBuilder();
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while ((thisMarker < s1.Length) && (thisChunk.Length == 0 || InChunk(thisCh, thisChunk[0])))
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{
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thisChunk.Append(thisCh);
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thisMarker++;
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if (thisMarker < s1.Length)
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{
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thisCh = s1[thisMarker];
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}
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}
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while ((thatMarker < s2.Length) && (thatChunk.Length == 0 || InChunk(thatCh, thatChunk[0])))
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{
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thatChunk.Append(thatCh);
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thatMarker++;
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if (thatMarker < s2.Length)
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{
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thatCh = s2[thatMarker];
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}
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}
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int result = 0;
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// If both chunks contain numeric characters, sort them numerically
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if (char.IsDigit(thisChunk[0]) && char.IsDigit(thatChunk[0]))
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{
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if (!int.TryParse(thisChunk.ToString(), out thisNumericChunk))
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{
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return 0;
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}
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if (!int.TryParse(thatChunk.ToString(), out thatNumericChunk))
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{
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return 0;
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}
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if (thisNumericChunk < thatNumericChunk)
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{
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result = -1;
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}
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if (thisNumericChunk > thatNumericChunk)
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{
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result = 1;
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}
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}
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else
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{
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result = thisChunk.ToString().CompareTo(thatChunk.ToString());
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}
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if (result != 0)
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{
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return result;
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}
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}
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return 0;
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}
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public int Compare(string x, string y)
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{
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return CompareValues(x, y);
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}
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}
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}
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}
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