添加项目文件。
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22
minitool1.sln
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22
minitool1.sln
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Microsoft Visual Studio Solution File, Format Version 12.00
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# Visual Studio Version 17
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VisualStudioVersion = 17.12.35506.116 d17.12
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MinimumVisualStudioVersion = 10.0.40219.1
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "minitool1", "minitool1\minitool1.csproj", "{D66AD932-3282-4BF4-9F84-E9AC9C84DE0B}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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Release|Any CPU = Release|Any CPU
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EndGlobalSection
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GlobalSection(ProjectConfigurationPlatforms) = postSolution
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{D66AD932-3282-4BF4-9F84-E9AC9C84DE0B}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{D66AD932-3282-4BF4-9F84-E9AC9C84DE0B}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{D66AD932-3282-4BF4-9F84-E9AC9C84DE0B}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{D66AD932-3282-4BF4-9F84-E9AC9C84DE0B}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE
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EndGlobalSection
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EndGlobal
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232
minitool1/Program.cs
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232
minitool1/Program.cs
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using K4os.Compression.LZ4;
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using System.Text;
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namespace minitool1
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{
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public class PkgChunk
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{
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public string pkg_path;
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public long off;
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public int len_comp;
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public int len_uncomp;
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}
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public class Program
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{
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static void Main(string[] args)
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{
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if (args.Length != 1)
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return;
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if (!Path.Exists(args[0]))
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return;
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string streamingAssetsPath = args[0];
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Dictionary<string, PkgChunk> file_map = [];
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LoadFileHeader(file_map, streamingAssetsPath + "/data_bg_i.arc");
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LoadFileHeader(file_map, streamingAssetsPath + "/data_st.arc");
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LoadFileHeader(file_map, streamingAssetsPath + "/data_tb.arc");
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LoadFileHeader(file_map, streamingAssetsPath + "/data_tr.arc");
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LoadFileHeader(file_map, streamingAssetsPath + "/data_cgs_real.arc");
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LoadFileHeader(file_map, streamingAssetsPath + "/data_game_sc_stand.arc");
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LoadAbFile(file_map, args[0]);
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Console.ReadKey();
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}
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private static void LoadAbFile(Dictionary<string, PkgChunk> file_map, string outputPath)
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{
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outputPath = Path.Combine(outputPath, "output");
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if (!Directory.Exists(outputPath))
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Directory.CreateDirectory(outputPath);
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foreach (var kvp in file_map)
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{
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string key = kvp.Key;
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byte[] data;
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if (key.EndsWith(".co.bytes"))
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{
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byte[] array = LoadNormalFile(file_map, key);
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int num = 0;
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while (num < array.Length && array[num] != 0)
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{
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num++;
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}
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string @string = Encoding.UTF8.GetString(array, 0, num);
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byte[] array2 = LoadNormalFile(file_map, @string);
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data = Proc_dec(array2, array);
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}
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else
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{
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data = LoadNormalFile(file_map, key);
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}
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string newKey = key[..^".un.bytes".Length]; //.co.bytes顺带处理
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WriteFile(data, Path.Combine(outputPath, newKey + ".asset"));
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}
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}
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private static void WriteFile(byte[] data, string path)
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{
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try
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{
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File.WriteAllBytes(path, data);
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Console.WriteLine($"{Path.GetFileName(path)} extraction successful.");
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}
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catch (Exception ex)
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{
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Console.WriteLine($"Failed to write file to {path}. Error: {ex.Message}");
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}
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}
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private static byte[] LoadNormalFile(Dictionary<string, PkgChunk> file_map, string file_name)
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{
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if (!file_map.TryGetValue(file_name, out PkgChunk? pkgChunk))
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throw new Exception($"{file_name} not found");
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int num = pkgChunk.len_uncomp;
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if (pkgChunk.len_comp != 0)
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num = pkgChunk.len_comp;
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byte[] array2 = new byte[num];
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FileStream fileStream = new(pkgChunk.pkg_path, FileMode.Open);
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fileStream.Seek(pkgChunk.off, SeekOrigin.Begin);
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fileStream.Read(array2, 0, num);
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fileStream.Close();
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if (pkgChunk.len_comp != 0)
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return DecompressLz4(array2, pkgChunk.len_uncomp);
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return array2;
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}
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private static byte[] DecompressLz4(byte[] src, int len_uncomp)
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{
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byte[] array = new byte[len_uncomp];
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LZ4Codec.Decode(src, 0, src.Length, array, 0, array.Length);
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return array;
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}
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private static int GetInt32(byte[] buf, int off)
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{
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return ((((((int)(0 | buf[off + 3]) << 8) | (int)buf[off + 2]) << 8) | (int)buf[off + 1]) << 8) | (int)buf[off];
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}
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private static long GetInt64(byte[] buf, int off)
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{
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return (long)(((((((((((((((0UL | (ulong)buf[off + 7]) << 8) | (ulong)buf[off + 6]) << 8) | (ulong)buf[off + 5]) << 8) | (ulong)buf[off + 4]) << 8) | (ulong)buf[off + 3]) << 8) | (ulong)buf[off + 2]) << 8) | (ulong)buf[off + 1]) << 8) | (ulong)buf[off]);
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}
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private static string GetString(byte[] buf, int off, ref int proc_len)
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{
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int num = 0;
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while (num < buf.Length - off && buf[off + num] != 0)
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{
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num++;
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}
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string @string = Encoding.UTF8.GetString(buf, off, num);
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proc_len = num + 1;
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return @string;
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}
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private static void LoadFileHeader(Dictionary<string, PkgChunk> file_map, string file_path)
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{
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if (!File.Exists(file_path))
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{
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return;
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}
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FileStream fileStream = new(file_path, FileMode.Open);
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byte[] array = new byte[16];
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fileStream.Seek(0L, SeekOrigin.Begin);
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fileStream.Read(array, 0, 16);
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long @int = GetInt64(array, 0);
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int int2 = GetInt32(array, 8);
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int int3 = GetInt32(array, 12);
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byte[] array2 = new byte[int2];
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fileStream.Seek(@int, SeekOrigin.Begin);
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fileStream.Read(array2, 0, int2);
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fileStream.Close();
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int num = 0;
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for (int i = 0; i < int3; i++)
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{
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int num2 = 0;
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string @string = GetString(array2, num, ref num2);
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num += num2;
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PkgChunk pkgChunk = new()
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{
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pkg_path = file_path,
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off = GetInt64(array2, num)
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};
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num += 8;
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pkgChunk.len_uncomp = GetInt32(array2, num);
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num += 4;
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pkgChunk.len_comp = GetInt32(array2, num);
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num += 4;
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file_map.Add(@string, pkgChunk);
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}
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}
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private static byte[] Proc_dec(byte[] buf_base, byte[] buf_now)
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{
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int i = 0;
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while (i < buf_now.Length && buf_now[i] != 0)
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{
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i++;
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}
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i++;
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int @int = GetInt32(buf_now, i);
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i += 4;
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byte[] array = new byte[@int];
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int num = 0;
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int num2 = 0;
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int num3 = buf_now.Length;
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while (i < num3)
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{
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byte b = buf_now[i++];
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if ((b & 128) != 0)
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{
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int num4 = (int)(b & 127);
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Array.Copy(buf_now, i, array, num, num4);
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i += num4;
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num += num4;
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num2 += num4;
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}
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else if (b == 0)
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{
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int num5 = (int)buf_now[i++];
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num5 &= 255;
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if ((num5 & 128) != 0)
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{
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num5 &= 127;
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num5 -= 128;
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}
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num2 += num5;
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}
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else if (b == 1)
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{
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int num6 = (int)buf_now[i++];
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Array.Copy(buf_base, num2, array, num, num6);
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num2 += num6;
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num += num6;
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}
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else if (b == 2)
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{
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int num7 = (int)buf_now[i++];
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num7 <<= 8;
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num7 |= (int)buf_now[i++];
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Array.Copy(buf_base, num2, array, num, num7);
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num2 += num7;
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num += num7;
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}
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else if (b == 3)
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{
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int num8 = (int)buf_now[i++];
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num8 <<= 8;
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num8 |= (int)buf_now[i++];
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num8 <<= 8;
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num8 |= (int)buf_now[i++];
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num8 <<= 8;
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num8 |= (int)buf_now[i++];
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Array.Copy(buf_base, num2, array, num, num8);
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num2 += num8;
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num += num8;
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}
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else
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{
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throw new Exception("Decompress Fail");
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}
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}
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return array;
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}
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}
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}
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8
minitool1/Properties/launchSettings.json
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8
minitool1/Properties/launchSettings.json
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{
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"profiles": {
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"minitool1": {
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"commandName": "Project",
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"commandLineArgs": "\"G:\\x221.local\\StreamingAssets\""
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}
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}
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}
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14
minitool1/minitool1.csproj
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14
minitool1/minitool1.csproj
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<Project Sdk="Microsoft.NET.Sdk">
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<PropertyGroup>
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<OutputType>Exe</OutputType>
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<TargetFramework>net8.0</TargetFramework>
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<ImplicitUsings>enable</ImplicitUsings>
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<Nullable>enable</Nullable>
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</PropertyGroup>
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<ItemGroup>
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<PackageReference Include="K4os.Compression.LZ4" Version="1.3.8" />
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</ItemGroup>
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</Project>
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