Initial commit

.gitignore

@@ -0,0 +1,6 @@
+.vs
+MMKVParser/bin
+MMKVParser/obj
+MMKVParser.Tests/bin
+MMKVParser.Tests/obj
+TestResults

MMKVParser.Tests/MMKVParser.Tests.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+
+    <IsPackable>false</IsPackable>
+    <IsTestProject>true</IsTestProject>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.0" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.8.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="3.1.1" />
+    <PackageReference Include="MSTest.TestFramework" Version="3.1.1" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\MMKVParser\MMKVParser.csproj" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Microsoft.VisualStudio.TestTools.UnitTesting" />
+  </ItemGroup>
+
+</Project>

MMKVParser.Tests/MMKVParserTests.cs

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+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using MMKVParser;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace MMKVParser.Tests
+{
+    [TestClass()]
+    public class MMKVParserTests
+    {
+        [TestMethod()]
+        public void LoadTest()
+        {
+            MMKVParser parser = new("mmkv.default");
+
+            var map = parser.Load();
+
+            Assert.IsNotNull(MMKVParser.ReadUTF8StringValue(map["TOKEN"][1]));
+        }
+    }
+}

MMKVParser.sln

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+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.9.34622.214
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MMKVParser", "MMKVParser\MMKVParser.csproj", "{D73CDC04-A714-4DC8-8DA5-36BE7688F8A9}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "MMKVParser.Tests", "MMKVParser.Tests\MMKVParser.Tests.csproj", "{40BE8A3E-5FCF-4DE7-9A38-6323C4FD1084}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D73CDC04-A714-4DC8-8DA5-36BE7688F8A9}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D73CDC04-A714-4DC8-8DA5-36BE7688F8A9}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D73CDC04-A714-4DC8-8DA5-36BE7688F8A9}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D73CDC04-A714-4DC8-8DA5-36BE7688F8A9}.Release|Any CPU.Build.0 = Release|Any CPU
+		{40BE8A3E-5FCF-4DE7-9A38-6323C4FD1084}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{40BE8A3E-5FCF-4DE7-9A38-6323C4FD1084}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{40BE8A3E-5FCF-4DE7-9A38-6323C4FD1084}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{40BE8A3E-5FCF-4DE7-9A38-6323C4FD1084}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B723F6C1-A94C-4346-B087-20579ADD7D79}
+	EndGlobalSection
+EndGlobal

MMKVParser/MMKVBinaryReader.cs

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+using System.Text;
+
+namespace MMKVParser
+{
+    internal class MMKVBinaryReader(Stream input) : BinaryReader(input)
+    {
+        public long ReadVarint()
+        {
+            long result = 0;
+            int shift = 0;
+            byte b;
+            do
+            {
+                b = ReadByte();
+                result |= ((long)b & 0x7F) << shift;
+                shift += 7;
+            } while ((b & 0x80) != 0);
+            return result;
+        }
+
+        /// <summary>
+        /// Reads a proto-buf field
+        /// 
+        /// Format: | Field Length (VarInt) | Field Value |
+        /// </summary>
+        /// <returns></returns>
+        public byte[] ReadProtoField()
+        {
+            long length = ReadVarint();
+            return ReadBytes((int)length);
+        }
+
+        public string ReadUTF8StringValue()
+        {
+            return Encoding.UTF8.GetString(ReadProtoField());
+        }
+    }
+}

MMKVParser/MMKVParser.cs

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+using System.Text;
+
+namespace MMKVParser
+{
+    public class MMKVParser : IDisposable
+    {
+        private readonly MMKVBinaryReader _reader;
+
+        public MMKVParser(string databasePath)
+        {
+            _reader = new(File.OpenRead(databasePath));
+        }
+
+        public MMKVParser(Stream stream)
+        {
+            _reader = new(stream);
+        }
+
+        public Dictionary<string, List<byte[]>> Load()
+        {
+            Dictionary<string, List<byte[]>> result = [];
+
+            int size = _reader.ReadInt32();
+            _reader.ReadVarint();
+
+            while(_reader.BaseStream.Position < size)
+            {
+                string key = Encoding.UTF8.GetString(_reader.ReadProtoField());
+                byte[] valueBytes = _reader.ReadProtoField();
+
+                if (!result.TryGetValue(key, out List<byte[]>? list))
+                {
+                    list = ([]);
+                    result[key] = list;
+                }
+                list.Add(valueBytes);
+            }
+            return result;
+        }
+
+        public static string ReadUTF8StringValue(byte[] bytes)
+        {
+            using MemoryStream stream = new(bytes);
+            using MMKVBinaryReader reader = new(stream);
+
+            return reader.ReadUTF8StringValue();
+        }
+
+        public void Dispose()
+        {
+            _reader.Dispose();
+        }
+    }
+}

MMKVParser/MMKVParser.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>