114 lines
4.2 KiB
C#
114 lines
4.2 KiB
C#
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using System.Collections.Generic;
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using PCL.Core.App.Localization;
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namespace PCL;
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public static class McVersionComparer
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{
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public const string UNKNOWN_VERSION_KEY = "UnknownVersion";
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/// <summary>
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/// 比较两个版本名；等同 Left >= Right。
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/// 无法比较两个预发布版的大小。
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/// 支持的格式：未知版本, 1.13.2, 1.7.10-pre4, 1.8_pre, 1.14 Pre-Release 2, 1.14.4 C6
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/// </summary>
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public static bool CompareVersionGe(string left, string right)
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{
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return CompareVersion(left, right) >= 0;
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}
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/// <summary>
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/// 比较两个版本名，若 Left 较新则返回 1，相同则返回 0，Right 较新则返回 -1；等同 Left - Right。
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/// 无法比较两个预发布版的大小。
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/// 支持的格式：未知版本, 26.1-snapshot-1，1.13.2, 1.7.10-pre4, 1.8_pre, 1.14 Pre-Release 2, 1.14.4 C6
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/// </summary>
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public static int CompareVersion(string left, string right)
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{
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if (left == Lang.Text("Minecraft.Version.Unknown") || right == Lang.Text("Minecraft.Version.Unknown"))
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{
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if (left == Lang.Text("Minecraft.Version.Unknown") && right != Lang.Text("Minecraft.Version.Unknown"))
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return 1;
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if (left == Lang.Text("Minecraft.Version.Unknown") && right == Lang.Text("Minecraft.Version.Unknown"))
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return 0;
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if (left != Lang.Text("Minecraft.Version.Unknown") && right == Lang.Text("Minecraft.Version.Unknown"))
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return -1;
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}
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left = left.ToLowerInvariant();
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right = right.ToLowerInvariant();
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var lefts = left.Replace("快照", "snapshot").Replace("预览版", "pre").RegexSearch("[a-z]+|[0-9]+");
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var rights = right.Replace("快照", "snapshot").Replace("预览版", "pre").RegexSearch("[a-z]+|[0-9]+");
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var i = 0;
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while (true)
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{
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// 两边均缺失，感觉是一个东西
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if (lefts.Count - 1 < i && rights.Count - 1 < i)
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{
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if (string.CompareOrdinal(left, right) > 0)
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return 1;
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if (string.CompareOrdinal(left, right) < 0)
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return -1;
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return 0;
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}
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// 确定两边的数值
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var leftValue = lefts.Count - 1 < i ? "0" : lefts[i];
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var rightValue = rights.Count - 1 < i ? "0" : rights[i];
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if ((leftValue ?? "") == (rightValue ?? ""))
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goto NextEntry;
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if (leftValue == "rc")
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leftValue = (-1).ToString();
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if (leftValue == "pre")
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leftValue = (-2).ToString();
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if (leftValue == "snapshot")
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leftValue = (-3).ToString();
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if (leftValue == "experimental")
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leftValue = (-4).ToString();
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var leftValValue = ModBase.Val(leftValue);
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if (rightValue == "rc")
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rightValue = (-1).ToString();
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if (rightValue == "pre")
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rightValue = (-2).ToString();
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if (rightValue == "snapshot")
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rightValue = (-3).ToString();
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if (rightValue == "experimental")
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rightValue = (-4).ToString();
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var rightValValue = ModBase.Val(rightValue);
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if (leftValValue == 0d && rightValValue == 0d)
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{
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// 如果没有数值则直接比较字符串
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if (string.CompareOrdinal(leftValue, rightValue) > 0) return 1;
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if (string.CompareOrdinal(leftValue, rightValue) < 0) return -1;
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}
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// 如果有数值则比较数值
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// 这会使得一边是数字一边是字母时数字方更大
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else if (leftValValue > rightValValue)
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{
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return 1;
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}
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else if (leftValValue < rightValValue)
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{
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return -1;
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}
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NextEntry: ;
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i += 1;
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}
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return 0;
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}
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/// <summary>
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/// 比较两个版本名的排序器。
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/// </summary>
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public class VersionComparer : IComparer<string>
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{
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public int Compare(string x, string y)
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{
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return CompareVersion(x, y);
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}
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}
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}
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