Add the SafeTransformer class

Author: cedx

src/Cli/Program.cs

@@ -1,4 +1,4 @@
 using Belin.PhpMinifier.Cli;
 
 // Start the application.
-return new RootCommand().Parse(args).Invoke();
+return await new RootCommand().Parse(args).InvokeAsync();

src/Cli/RootCommand.cs

@@ -11,15 +11,16 @@ internal class RootCommand: System.CommandLine.RootCommand {
 	/// Creates a new root command.
 	/// </summary>
 	public RootCommand(): base("Minify PHP source code by removing comments and whitespace.") {
-		SetAction(Invoke);
+		SetAction(InvokeAsync);
 	}
 
 	/// <summary>
 	/// Invokes this command.
 	/// </summary>
 	/// <param name="parseResult">The results of parsing the command line input.</param>
+	/// <param name="cancellationToken">The token to cancel the operation.</param>
 	/// <returns>The exit code.</returns>
-	public int Invoke(ParseResult parseResult) {
-		return 0;
+	public Task<int> InvokeAsync(ParseResult parseResult, CancellationToken cancellationToken) {
+		return Task.FromResult(0);
 	}
 }

src/FastTransformer.cs

@@ -0,0 +1,24 @@
+namespace Belin.PhpMinifier;
+
+/// <summary>
+/// Removes comments and whitespace from a PHP script, by calling a Web service.
+/// </summary>
+/// <param name="executable">The path to the PHP executable.</param>
+public sealed class FastTransformer(string executable = "php"): ITransformer {
+
+	/// <summary>
+	/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+	/// </summary>
+	public ValueTask DisposeAsync() {
+		return ValueTask.CompletedTask;
+	}
+
+	/// <summary>
+	/// Processes a PHP script.
+	/// </summary>
+	/// <param name="file">The path to the PHP script.</param>
+	/// <returns>The transformed script.</returns>
+	public Task<string> Transform(string file) {
+		return Task.FromResult(string.Empty);
+	}
+}

src/ITransformer.cs

@@ -10,5 +10,5 @@ public interface ITransformer: IAsyncDisposable {
 	/// </summary>
 	/// <param name="file">The path to the PHP script.</param>
 	/// <returns>The transformed script.</returns>
-	string Transform(string file);
+	Task<string> Transform(string file);
 }

src/SafeTransformer.cs

@@ -0,0 +1,27 @@
+namespace Belin.PhpMinifier;
+
+using System.Diagnostics;
+using System.Threading.Tasks;
+
+/// <summary>
+/// Removes comments and whitespace from a PHP script, by calling a PHP process.
+/// </summary>
+/// <param name="executable">The path to the PHP executable.</param>
+public sealed class SafeTransformer(string executable = "php"): ITransformer {
+
+	/// <summary>
+	/// Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.
+	/// </summary>
+	public ValueTask DisposeAsync() => ValueTask.CompletedTask;
+
+	/// <summary>
+	/// Processes a PHP script.
+	/// </summary>
+	/// <param name="file">The path to the PHP script.</param>
+	/// <returns>The transformed script.</returns>
+	public async Task<string> Transform(string file) {
+		var process = Process.Start(executable);
+		await process.WaitForExitAsync();
+		return string.Empty;
+	}
+}