scripts

2026-06-04 11:42:34 +02:00
parent f39ba70a9f
commit e720b98cd1
7488 changed files with 2493818 additions and 0 deletions
@@ -0,0 +1,102 @@
+using System;
+
+namespace Hjg.Pngcs.Zlib
+{
+	// Token: 0x02000047 RID: 71
+	public class CRC32
+	{
+		// Token: 0x060002A4 RID: 676 RVA: 0x0000A90A File Offset: 0x00008B0A
+		public CRC32()
+			: this(3988292384U, uint.MaxValue)
+		{
+		}
+
+		// Token: 0x060002A5 RID: 677 RVA: 0x0000A918 File Offset: 0x00008B18
+		public CRC32(uint polynomial, uint seed)
+		{
+			this.table = CRC32.InitializeTable(polynomial);
+			this.seed = seed;
+			this.hash = seed;
+		}
+
+		// Token: 0x060002A6 RID: 678 RVA: 0x0000A93A File Offset: 0x00008B3A
+		public void Update(byte[] buffer)
+		{
+			this.Update(buffer, 0, buffer.Length);
+		}
+
+		// Token: 0x060002A7 RID: 679 RVA: 0x0000A948 File Offset: 0x00008B48
+		public void Update(byte[] buffer, int start, int length)
+		{
+			int i = 0;
+			int num = start;
+			while (i < length)
+			{
+				this.hash = (this.hash >> 8) ^ this.table[(int)((UIntPtr)((uint)buffer[num] ^ (this.hash & 255U)))];
+				i++;
+				num++;
+			}
+		}
+
+		// Token: 0x060002A8 RID: 680 RVA: 0x0000A98E File Offset: 0x00008B8E
+		public uint GetValue()
+		{
+			return ~this.hash;
+		}
+
+		// Token: 0x060002A9 RID: 681 RVA: 0x0000A997 File Offset: 0x00008B97
+		public void Reset()
+		{
+			this.hash = this.seed;
+		}
+
+		// Token: 0x060002AA RID: 682 RVA: 0x0000A9A8 File Offset: 0x00008BA8
+		private static uint[] InitializeTable(uint polynomial)
+		{
+			if (polynomial == 3988292384U && CRC32.defaultTable != null)
+			{
+				return CRC32.defaultTable;
+			}
+			uint[] array = new uint[256];
+			for (int i = 0; i < 256; i++)
+			{
+				uint num = (uint)i;
+				for (int j = 0; j < 8; j++)
+				{
+					if ((num & 1U) == 1U)
+					{
+						num = (num >> 1) ^ polynomial;
+					}
+					else
+					{
+						num >>= 1;
+					}
+				}
+				array[i] = num;
+			}
+			if (polynomial == 3988292384U)
+			{
+				CRC32.defaultTable = array;
+			}
+			return array;
+		}
+
+		// Token: 0x0400015D RID: 349
+		private const uint defaultPolynomial = 3988292384U;
+
+		// Token: 0x0400015E RID: 350
+		private const uint defaultSeed = 4294967295U;
+
+		// Token: 0x0400015F RID: 351
+		private static uint[] defaultTable;
+
+		// Token: 0x04000160 RID: 352
+		private uint hash;
+
+		// Token: 0x04000161 RID: 353
+		private uint seed;
+
+		// Token: 0x04000162 RID: 354
+		private uint[] table;
+	}
+}