feat: add compression for proto files

This is kind of a "why not" feature.

Author: AvarianKnight

src/NativeCodeGen.Cli/Program.cs

@@ -75,6 +75,11 @@ static async Task<int> Main(string[] args)
             description: "npm package version (e.g., 1.0.0)",
             getDefaultValue: () => "0.0.1");
 
+        var compressOption = new Option<bool>(
+            aliases: new[] { "--compress" },
+            description: "Gzip compress the output (proto format only)",
+            getDefaultValue: () => false);
+
         generateCommand.AddOption(inputOption);
         generateCommand.AddOption(outputOption);
         generateCommand.AddOption(formatOption);
@@ -86,6 +91,7 @@ static async Task<int> Main(string[] args)
         generateCommand.AddOption(packageOption);
         generateCommand.AddOption(packageNameOption);
         generateCommand.AddOption(packageVersionOption);
+        generateCommand.AddOption(compressOption);
 
         generateCommand.SetHandler(async (context) =>
         {
@@ -100,8 +106,9 @@ static async Task<int> Main(string[] args)
             var package_ = context.ParseResult.GetValueForOption(packageOption);
             var packageName = context.ParseResult.GetValueForOption(packageNameOption);
             var packageVersion = context.ParseResult.GetValueForOption(packageVersionOption);
+            var compress = context.ParseResult.GetValueForOption(compressOption);
 
-            var exitCode = await Generate(input, output, format, namespaces, raw, singleFile, strict, exports, package_, packageName, packageVersion);
+            var exitCode = await Generate(input, output, format, namespaces, raw, singleFile, strict, exports, package_, packageName, packageVersion, compress);
             context.ExitCode = exitCode;
         });
 
@@ -136,7 +143,7 @@ static async Task<int> Main(string[] args)
         return await rootCommand.InvokeAsync(args);
     }
 
-    static async Task<int> Generate(string input, string output, string format, string[]? namespaces, bool raw, bool singleFile, bool strict, bool exports, bool package_, string? packageName, string? packageVersion)
+    static async Task<int> Generate(string input, string output, string format, string[]? namespaces, bool raw, bool singleFile, bool strict, bool exports, bool package_, string? packageName, string? packageVersion, bool compress)
     {
         Console.WriteLine($"Generating {format} output...");
         Console.WriteLine($"Input: {input}");
@@ -210,7 +217,8 @@ static async Task<int> Generate(string input, string output, string format, stri
             PackageVersion = packageVersion ?? "0.0.1",
             Namespaces = namespaces?.Length > 0
                 ? new HashSet<string>(namespaces.SelectMany(n => n.Split(',')), StringComparer.OrdinalIgnoreCase)
-                : null
+                : null,
+            Compress = compress
         };
 
         exporter.Export(db, output, options);

src/NativeCodeGen.Core/Export/IExporter.cs

@@ -19,4 +19,5 @@ public class ExportOptions
     public HashSet<string>? Namespaces { get; set; }
     public bool IncludeEnums { get; set; } = true;
     public bool IncludeStructs { get; set; } = true;
+    public bool Compress { get; set; }
 }

src/NativeCodeGen.Core/Export/ProtobufExporter.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics.CodeAnalysis;
+using System.IO.Compression;
 using NativeCodeGen.Core.Models;
 using NativeCodeGen.Core.Parsing;
 using ProtoBuf;
@@ -46,6 +47,15 @@ public void Export(NativeDatabase db, string outputPath, ExportOptions options)
         }
 
         using var file = File.Create(binaryPath);
-        Serializer.Serialize(file, exportDb);
+
+        if (options.Compress)
+        {
+            using var gzip = new GZipStream(file, CompressionLevel.SmallestSize);
+            Serializer.Serialize(gzip, exportDb);
+        }
+        else
+        {
+            Serializer.Serialize(file, exportDb);
+        }
     }
 }