优化编码至 stdout 的代码

Base16384.Net.csproj

@@ -4,13 +4,14 @@
 		<TargetFramework>net8.0</TargetFramework>
 		<ImplicitUsings>enable</ImplicitUsings>
 		<Nullable>enable</Nullable>
-		<Version>1.1.0.0</Version>
+		<Version>2.0.0.0</Version>
 	</PropertyGroup>
 	<ItemGroup>
 		<PackageReference Include="LC6464.Base16384" Version="2.1.0" />
 	</ItemGroup>
 	<ItemGroup>
 		<Using Include="System.Runtime.InteropServices" />
 		<Using Include="LC6464.Base16384" />
+		<Using Include="ConsoleHelpers" />
 	</ItemGroup>
 </Project>

Helpers.cs

@@ -0,0 +1,19 @@
+namespace ConsoleHelpers;
+
+public static class Helpers {
+	public static int WriteToStdOut<T>(Func<T, Stream, long> func, T input, Stream? stdout = null) {
+		try {
+			stdout ??= Console.OpenStandardOutput();
+			try {
+				func(input, stdout);
+			} catch {
+				return 4;
+			} finally {
+				stdout.Dispose();
+			}
+		} catch {
+			return 3;
+		}
+		return 0;
+	}
+}

Program.cs

@@ -20,28 +20,20 @@ 4. 编解码失败
 			using var stdin = Console.OpenStandardInput();
 			if (args.Length == 2 || args[2] == "-") {
 				// Write to stdout
-				try {
-					using var stdout = Console.OpenStandardOutput();
-					try {
-						Base16384.EncodeToStream(stdin, stdout);
-					} catch {
-						return 4;
-					}
-				} catch {
-					return 3;
-				}
-			} else {
-				// Write to file
-				FileInfo info = new(args[2]);
-				Console.Write($"<stdin> -> {info.Name} ... ");
-				try {
-					Base16384.EncodeToNewFile(stdin, info);
-				} catch {
-					Console.WriteLine("Failed.");
-					return 4;
-				}
-				Console.WriteLine("Done.");
+				return Helpers.WriteToStdOut(Base16384.EncodeToStream, stdin);
+			}
+
+			// Write to file
+			FileInfo info = new(args[2]);
+			Console.Write($"<stdin> -> {info.Name} ... ");
+			try {
+				Base16384.EncodeToNewFile(stdin, info);
+			} catch {
+				Console.WriteLine("Failed.");
+				return 4;
 			}
+			Console.WriteLine("Done.");
+
 		} catch {
 			if (args.Length != 2 && args[2] != "-") {
 				Console.WriteLine("Can not open stdin.");
@@ -52,19 +44,9 @@ 4. 编解码失败
 		// Read from file
 		if (args is [.., "-"]) {
 			// Write to stdout
-			if (!File.Exists(args[1])) {
-				return 2;
-			}
-			try {
-				using var stdout = Console.OpenStandardOutput();
-				try {
-					Base16384.EncodeFromFileToStream(new(args[1]), stdout);
-				} catch {
-					return 4;
-				}
-			} catch {
-				return 3;
-			}
+			return !File.Exists(args[1])
+				? 2
+				: Helpers.WriteToStdOut(Base16384.EncodeFromFileToStream, new FileInfo(args[1]));
 		} else if (args.Length == 2) {
 			// Write to .decoded file
 			if (!File.Exists(args[1])) {