From 12eaa5814ef20b0910e8d64a753378b6f6797989 Mon Sep 17 00:00:00 2001
From: Jake Mannens <jake@asger.xyz>
Date: Fri, 22 May 2026 00:52:16 +1000
Subject: Initial commit

---
 Util.cs | 120 ----------------------------------------------------------------
 1 file changed, 120 deletions(-)
 delete mode 100644 Util.cs

(limited to 'Util.cs')

diff --git a/Util.cs b/Util.cs
deleted file mode 100644
index 6af6c81..0000000
--- a/Util.cs
+++ /dev/null
@@ -1,120 +0,0 @@
-namespace HyperBooru.Util;
-
-public static class Extensions {
-    public static readonly string[] MagnitudeOrders = new[] {
-        "K", "M", "G", "T", "P", "E", "Z", "Y", "R", "Q"
-    };
-
-    public static DateTime? TryParseDateTimeUtc(this string s) {
-        bool success = DateTime.TryParse(s, out var dateTime);
-        return success ? DateTime.SpecifyKind(dateTime, DateTimeKind.Utc) : null;
-    }
-
-    public static string ToBytesSI(this long x) {
-        var exp = (int) Math.Log10(x);
-        var suffix = MagnitudeOrders.ElementAtOrDefault(exp / 3 - 1);
-        if(suffix is null)
-            return x.ToString();
-        double n = x / Math.Pow(10, exp / 3 * 3);
-        return $"{Math.Round(n, 2 - (exp % 3))} {suffix}B";
-    }
-
-    public static string ToStringHumanReadable(this TimeSpan t) {
-        if(t.TotalMilliseconds < 1000)
-            return string.Format("{0:0}ms", t.TotalMilliseconds);
-        if(t.TotalSeconds < 60)
-            return string.Format("{0:0.00}s", t.TotalSeconds);
-        if(t.TotalMinutes < 60)
-            return string.Format("{0:0}m{0:0}s", t.TotalMinutes, t.Seconds);
-        if(t.TotalHours < 24)
-            return string.Format("{0:0}h{0:0}m", t.TotalHours, t.Minutes);
-        return string.Format("{0:0.00}d", t.TotalDays);
-    }
-}
-
-public class LimitedConcurrencyTaskScheduler : TaskScheduler {
-    public sealed override int MaximumConcurrencyLevel =>
-        maxConcurrency;
-
-    private int maxConcurrency;
-
-    [ThreadStatic]
-    private static bool threadIsProcessingItems;
-
-    private readonly LinkedList<Task> tasks = new();
-
-    private int delegatesQueuedOrRunning = 0;
-
-    public LimitedConcurrencyTaskScheduler() {
-        maxConcurrency = Environment.ProcessorCount;
-    }
-
-    public LimitedConcurrencyTaskScheduler(int maxConcurrency) {
-        if(maxConcurrency < 1)
-            throw new ArgumentOutOfRangeException("maxConcurrency must be greater than 0");
-        this.maxConcurrency = (int) maxConcurrency;
-    }
-
-    protected sealed override void QueueTask(Task task) {
-        lock(tasks) {
-            tasks.AddLast(task);
-            if(delegatesQueuedOrRunning < maxConcurrency) {
-                delegatesQueuedOrRunning++;
-                NotifyThreadPoolOfPendingWork();
-            }
-        }
-    }
-
-    private void NotifyThreadPoolOfPendingWork() {
-        ThreadPool.UnsafeQueueUserWorkItem(_ => {
-            threadIsProcessingItems = true;
-            try {
-                while(true) {
-                    Task item;
-                    lock(tasks) {
-                        if(tasks.Count == 0) {
-                            delegatesQueuedOrRunning--;
-                            break;
-                        } else {
-                            item = tasks.First.Value;
-                            tasks.RemoveFirst();
-                        }
-                    }
-                    TryExecuteTask(item);
-                }
-            } finally {
-                threadIsProcessingItems = false;
-            }
-        }, null);
-    }
-
-    protected sealed override bool TryExecuteTaskInline(Task task, bool taskWasPreviouslyQueued) {
-        if(!threadIsProcessingItems)
-            return false;
-
-        if(taskWasPreviouslyQueued)
-            return TryDequeue(task) ? TryExecuteTask(task) : false;
-        else
-            return TryExecuteTask(task);
-    }
-
-    protected sealed override bool TryDequeue(Task task) {
-        lock(tasks) {
-            return tasks.Remove(task);
-        }
-    }
-
-    protected sealed override IEnumerable<Task> GetScheduledTasks() {
-        bool lockTaken = false;
-        try {
-            Monitor.TryEnter(tasks, ref lockTaken);
-            if(lockTaken)
-                return tasks;
-            else
-                throw new NotSupportedException();
-        } finally {
-            if(lockTaken)
-                Monitor.Exit(tasks);
-        }
-    }
-}
-- 
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