scripts

2026-06-04 11:42:34 +02:00
parent f39ba70a9f
commit e720b98cd1
7488 changed files with 2493818 additions and 0 deletions
@@ -0,0 +1,117 @@
+using System;
+using System.IO;
+using Hjg.Pngcs.Zlib;
+
+namespace Hjg.Pngcs.Chunks
+{
+	// Token: 0x02000005 RID: 5
+	public class ChunkRaw
+	{
+		// Token: 0x06000025 RID: 37 RVA: 0x000025C0 File Offset: 0x000007C0
+		internal ChunkRaw(int length, byte[] idbytes, bool alloc)
+		{
+			this.IdBytes = new byte[4];
+			this.Data = null;
+			this.crcval = 0;
+			this.Length = length;
+			Array.Copy(idbytes, 0, this.IdBytes, 0, 4);
+			if (alloc)
+			{
+				this.AllocData();
+			}
+		}
+
+		// Token: 0x06000026 RID: 38 RVA: 0x0000260C File Offset: 0x0000080C
+		private int ComputeCrc()
+		{
+			CRC32 crc = PngHelperInternal.GetCRC();
+			crc.Reset();
+			crc.Update(this.IdBytes, 0, 4);
+			if (this.Length > 0)
+			{
+				crc.Update(this.Data, 0, this.Length);
+			}
+			return (int)crc.GetValue();
+		}
+
+		// Token: 0x06000027 RID: 39 RVA: 0x00002658 File Offset: 0x00000858
+		internal void WriteChunk(Stream os)
+		{
+			if (this.IdBytes.Length != 4)
+			{
+				throw new PngjOutputException("bad chunkid [" + ChunkHelper.ToString(this.IdBytes) + "]");
+			}
+			this.crcval = this.ComputeCrc();
+			PngHelperInternal.WriteInt4(os, this.Length);
+			PngHelperInternal.WriteBytes(os, this.IdBytes);
+			if (this.Length > 0)
+			{
+				PngHelperInternal.WriteBytes(os, this.Data, 0, this.Length);
+			}
+			PngHelperInternal.WriteInt4(os, this.crcval);
+		}
+
+		// Token: 0x06000028 RID: 40 RVA: 0x000026DC File Offset: 0x000008DC
+		internal int ReadChunkData(Stream stream, bool checkCrc)
+		{
+			PngHelperInternal.ReadBytes(stream, this.Data, 0, this.Length);
+			this.crcval = PngHelperInternal.ReadInt4(stream);
+			if (checkCrc)
+			{
+				int num = this.ComputeCrc();
+				if (num != this.crcval)
+				{
+					throw new PngjBadCrcException(string.Concat(new object[]
+					{
+						"crc invalid for chunk ",
+						this.ToString(),
+						" calc=",
+						num,
+						" read=",
+						this.crcval
+					}));
+				}
+			}
+			return this.Length + 4;
+		}
+
+		// Token: 0x06000029 RID: 41 RVA: 0x0000276E File Offset: 0x0000096E
+		internal MemoryStream GetAsByteStream()
+		{
+			return new MemoryStream(this.Data);
+		}
+
+		// Token: 0x0600002A RID: 42 RVA: 0x0000277B File Offset: 0x0000097B
+		private void AllocData()
+		{
+			if (this.Data == null || this.Data.Length < this.Length)
+			{
+				this.Data = new byte[this.Length];
+			}
+		}
+
+		// Token: 0x0600002B RID: 43 RVA: 0x000027A8 File Offset: 0x000009A8
+		public override string ToString()
+		{
+			return string.Concat(new object[]
+			{
+				"chunkid=",
+				ChunkHelper.ToString(this.IdBytes),
+				" len=",
+				this.Length
+			});
+		}
+
+		// Token: 0x04000025 RID: 37
+		public readonly int Length;
+
+		// Token: 0x04000026 RID: 38
+		public readonly byte[] IdBytes;
+
+		// Token: 0x04000027 RID: 39
+		public byte[] Data;
+
+		// Token: 0x04000028 RID: 40
+		private int crcval;
+	}
+}