using System;
using System.Runtime.InteropServices;
using Cpp2IlInjected;

namespace BestHTTP.Decompression.Zlib
{
	// Token: 0x020019CE RID: 6606
	[Token(Token = "0x20019CE")]
	[StructLayout(3)]
	internal sealed class InflateCodes
	{
		// Token: 0x0600B1C1 RID: 45505 RVA: 0x0029AF5C File Offset: 0x0029915C
		[Token(Token = "0x600B1C1")]
		[Address(RVA = "0x3C1670", Offset = "0x3C0070", VA = "0x1803C1670")]
		internal InflateCodes()
		{
		}

		// Token: 0x0600B1C2 RID: 45506 RVA: 0x0029AF70 File Offset: 0x00299170
		[Token(Token = "0x600B1C2")]
		[Address(RVA = "0xE302D0", Offset = "0xE2ECD0", VA = "0x180E302D0")]
		internal void Init(int bl, int bd, int[] tl, int tl_index, int[] td, int td_index)
		{
			int num = 0;
			this.ltree_index = 0;
			this.dtree = 0;
			this.dtree_index = 0;
			this.mode = num;
			this.lbits = (byte)bl;
			this.dbits = (byte)bd;
			this.ltree = tl;
			this.tree = num;
		}

		// Token: 0x0600B1C3 RID: 45507 RVA: 0x0029AFB8 File Offset: 0x002991B8
		[Token(Token = "0x600B1C3")]
		[Address(RVA = "0x1F162E0", Offset = "0x1F14CE0", VA = "0x181F162E0")]
		internal int Process(InflateBlocks blocks, int r)
		{
			ZlibCodec codec = blocks._codec;
			int writeAt = blocks.writeAt;
			int num = blocks.readAt;
			int bitb = blocks.bitb;
			int nextIn = codec.NextIn;
			int availableBytesIn = codec.AvailableBytesIn;
			int bitk = blocks.bitk;
			if (writeAt < num)
			{
				num -= writeAt;
			}
			int num2 = blocks.end;
			num2 -= writeAt;
			blocks.bitb = bitb;
			blocks.bitk = bitk;
			codec.AvailableBytesIn = availableBytesIn;
			codec.NextIn = nextIn;
			blocks.writeAt = writeAt;
			int writeAt2 = blocks.writeAt;
			int num3 = blocks.readAt;
			int bitb2 = blocks.bitb;
			int num4 = codec.NextIn;
			int availableBytesIn2 = codec.AvailableBytesIn;
			int num5 = blocks.bitk;
			if (writeAt2 < num3)
			{
				num3 -= writeAt2;
			}
			int num6 = blocks.end;
			num6 -= writeAt2;
			int num7;
			if (num7 != 0)
			{
			}
			uint num8;
			if (num5 < (int)num8)
			{
				if (availableBytesIn2 == 0)
				{
					goto IL_31B;
				}
				byte[] inputBuffer = codec.InputBuffer;
				num4++;
				num5 += 8;
			}
			uint num9;
			int num10;
			if (num5 < (int)num9)
			{
				if (availableBytesIn2 == 0)
				{
					goto IL_31B;
				}
				num10 = 0;
				byte[] inputBuffer2 = codec.InputBuffer;
				num4++;
				num5 += 8;
			}
			num5 -= (int)num9;
			if (num5 < (int)num9)
			{
				if (availableBytesIn2 == 0)
				{
					goto IL_349;
				}
				byte[] inputBuffer3 = codec.InputBuffer;
				num4++;
				num5 += 8;
			}
			num5 -= num10;
			uint num11;
			int num12;
			if (num5 < (int)num11)
			{
				if (availableBytesIn2 == 0)
				{
					goto IL_31B;
				}
				num12 = 0;
				byte[] inputBuffer4 = codec.InputBuffer;
				num4++;
				num5 += 8;
			}
			num5 -= (int)num11;
			int num14;
			int num15;
			int num16;
			if (num6 == 0)
			{
				int num13 = blocks.end;
				if (writeAt2 == num13)
				{
					int readAt = blocks.readAt;
					if (readAt != 0)
					{
						if (readAt > 0)
						{
						}
						if (num13 != 0)
						{
							goto IL_203;
						}
					}
				}
				blocks.writeAt = writeAt2;
				num14 = blocks.Flush(num12);
				int writeAt3 = blocks.writeAt;
				int end = blocks.end;
				int readAt2 = blocks.readAt;
				if (writeAt3 < readAt2)
				{
					num13 = readAt2;
					num13 -= writeAt3;
				}
				num13 -= writeAt3;
				if (writeAt3 == end && readAt2 != 0)
				{
					num15 = 0;
					num16 = readAt2 - 1;
					if (readAt2 <= 0)
					{
					}
				}
				if (num16 == 0)
				{
					goto IL_358;
				}
			}
			IL_203:
			byte[] window = blocks.window;
			int num17 = writeAt2 + 1;
			num15++;
			int length = window.Length;
			int end2 = blocks.end;
			int i;
			if (num16 == 0)
			{
				int end3 = blocks.end;
				int num18;
				if (num15 == end3)
				{
					int readAt3 = blocks.readAt;
					if (readAt3 != 0)
					{
						num18 = 0;
						int num19;
						if (readAt3 > 0)
						{
							num19 = readAt3 - 1;
						}
						if (num19 != 0)
						{
							goto IL_2D0;
						}
					}
				}
				blocks.writeAt = num18;
				int num20 = blocks.Flush(num14);
				int readAt4 = blocks.readAt;
				num14 = num20;
				int writeAt4 = blocks.writeAt;
				if (writeAt4 < readAt4)
				{
					int num19 = readAt4;
					num19 -= writeAt4;
				}
				int num21 = blocks.end;
				num21 -= writeAt4;
				int end4 = blocks.end;
				int num22;
				if (writeAt4 == end4 && readAt4 != 0)
				{
					i = 0;
					num22 = readAt4 - 1;
					num22 = end4;
				}
				if (num22 == 0)
				{
					goto IL_36E;
				}
			}
			IL_2D0:
			byte[] window2 = blocks.window;
			int num23 = 0;
			i++;
			while (i <= 9)
			{
			}
			blocks.bitb = bitb2;
			blocks.bitk = num5;
			codec.AvailableBytesIn = availableBytesIn2;
			int num24 = 0;
			codec.NextIn = num4;
			blocks.writeAt = i;
			return blocks.Flush(-2);
			IL_31B:
			blocks.bitb = num24;
			blocks.bitk = 0;
			blocks.writeAt = 0;
			blocks.bitb = 0;
			blocks.bitk = 0;
			int num25 = 0;
			blocks.writeAt = 0;
			IL_349:
			blocks.bitb = num25;
			blocks.bitk = 0;
			IL_358:
			blocks.bitb = bitb2;
			blocks.bitk = 0;
			blocks.writeAt = 0;
			IL_36E:
			blocks.bitb = bitb2;
			blocks.bitk = 0;
			blocks.writeAt = 0;
			blocks.writeAt = 0;
			int num26 = blocks.Flush(num23);
			int writeAt5 = blocks.writeAt;
			while (blocks.readAt != writeAt5)
			{
			}
			blocks.bitb = bitb2;
			blocks.bitk = 0;
			int num27 = 0;
			blocks.writeAt = writeAt5;
			blocks.bitb = num27;
			throw new NullReferenceException();
		}

		// Token: 0x0600B1C4 RID: 45508 RVA: 0x0029B394 File Offset: 0x00299594
		[Token(Token = "0x600B1C4")]
		[Address(RVA = "0x1F15710", Offset = "0x1F14110", VA = "0x181F15710")]
		internal int InflateFast(int bl, int bd, int[] tl, int tl_index, int[] td, int td_index, InflateBlocks s, ZlibCodec z)
		{
			int num6;
			if (bl != 0)
			{
				int num = bd + 1;
				if (bl == 16)
				{
					if (bl != 64)
					{
						goto IL_67;
					}
					while (bl != 0)
					{
					}
					int num2 = bd + 1;
				}
				int num3 = bd + 1;
				if (bl == 16 && bl != 64)
				{
					goto IL_73;
				}
				int num4 = bd - 1;
				while (num4 != 0)
				{
				}
				int num5 = 0;
				num6 = 0;
				if (num5 != 1)
				{
					num6 += 2;
					num4 -= num6;
					if (num4 > 0)
					{
						num6++;
						while (num4 != 0)
						{
						}
					}
				}
				Array.Copy(num6, num6, num6, 1, num4);
			}
			IL_67:
			if (num6 == 32)
			{
			}
			uint num7;
			num7 -= tl;
			IL_73:
			throw new NullReferenceException();
		}

		// Token: 0x040074EB RID: 29931
		[Token(Token = "0x40074EB")]
		private const int START = 0;

		// Token: 0x040074EC RID: 29932
		[Token(Token = "0x40074EC")]
		private const int LEN = 1;

		// Token: 0x040074ED RID: 29933
		[Token(Token = "0x40074ED")]
		private const int LENEXT = 2;

		// Token: 0x040074EE RID: 29934
		[Token(Token = "0x40074EE")]
		private const int DIST = 3;

		// Token: 0x040074EF RID: 29935
		[Token(Token = "0x40074EF")]
		private const int DISTEXT = 4;

		// Token: 0x040074F0 RID: 29936
		[Token(Token = "0x40074F0")]
		private const int COPY = 5;

		// Token: 0x040074F1 RID: 29937
		[Token(Token = "0x40074F1")]
		private const int LIT = 6;

		// Token: 0x040074F2 RID: 29938
		[Token(Token = "0x40074F2")]
		private const int WASH = 7;

		// Token: 0x040074F3 RID: 29939
		[Token(Token = "0x40074F3")]
		private const int END = 8;

		// Token: 0x040074F4 RID: 29940
		[Token(Token = "0x40074F4")]
		private const int BADCODE = 9;

		// Token: 0x040074F5 RID: 29941
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x10")]
		[Token(Token = "0x40074F5")]
		internal int mode;

		// Token: 0x040074F6 RID: 29942
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x14")]
		[Token(Token = "0x40074F6")]
		internal int len;

		// Token: 0x040074F7 RID: 29943
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x18")]
		[Token(Token = "0x40074F7")]
		internal int[] tree;

		// Token: 0x040074F8 RID: 29944
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x20")]
		[Token(Token = "0x40074F8")]
		internal int tree_index;

		// Token: 0x040074F9 RID: 29945
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x24")]
		[Token(Token = "0x40074F9")]
		internal int need;

		// Token: 0x040074FA RID: 29946
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x28")]
		[Token(Token = "0x40074FA")]
		internal int lit;

		// Token: 0x040074FB RID: 29947
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x2C")]
		[Token(Token = "0x40074FB")]
		internal int bitsToGet;

		// Token: 0x040074FC RID: 29948
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x30")]
		[Token(Token = "0x40074FC")]
		internal int dist;

		// Token: 0x040074FD RID: 29949
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x34")]
		[Token(Token = "0x40074FD")]
		internal byte lbits;

		// Token: 0x040074FE RID: 29950
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x35")]
		[Token(Token = "0x40074FE")]
		internal byte dbits;

		// Token: 0x040074FF RID: 29951
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x38")]
		[Token(Token = "0x40074FF")]
		internal int[] ltree;

		// Token: 0x04007500 RID: 29952
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x40")]
		[Token(Token = "0x4007500")]
		internal int ltree_index;

		// Token: 0x04007501 RID: 29953
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x48")]
		[Token(Token = "0x4007501")]
		internal int[] dtree;

		// Token: 0x04007502 RID: 29954
		[global::Cpp2IlInjected.FieldOffset(Offset = "0x50")]
		[Token(Token = "0x4007502")]
		internal int dtree_index;
	}
}