Initial commit

MkvToolnixWrapper/Utils/ProcessRunner.cs

@@ -0,0 +1,103 @@
+using System.Diagnostics;
+using System.Text;
+
+namespace MkvPropEditWrapper.Utils;
+
+public sealed class ProcessRunner
+{
+    private readonly ProcessStartInfo _startInfo;
+
+    public ProcessRunner(ProcessStartInfo startInfo)
+    {
+        _startInfo = startInfo;
+
+        _startInfo.RedirectStandardOutput = true;
+        _startInfo.RedirectStandardError = true;
+        _startInfo.StandardOutputEncoding = Encoding.UTF8;
+        _startInfo.StandardErrorEncoding = Encoding.UTF8;
+    }
+
+    public bool TryRun(out string output)
+    {
+        using var process = Process.Start(_startInfo);
+
+        var outputBuilder = new StringBuilder();
+        var errorBuilder = new StringBuilder();
+
+        if (process is null)
+        {
+            output = "";
+
+            return false;
+        }
+
+        process.OutputDataReceived += (_, args) =>
+        {
+            outputBuilder.AppendLine(args.Data);
+        };
+
+        process.ErrorDataReceived += (_, args) =>
+        {
+            errorBuilder.AppendLine(args.Data);
+        };
+
+        process.BeginOutputReadLine();
+        process.BeginErrorReadLine();
+
+        process.WaitForExit();
+
+        if (process.ExitCode != 0)
+        {
+            output = BuildError(process, outputBuilder, errorBuilder);
+
+            return false;
+        }
+
+        output = outputBuilder.ToString();
+
+        return true;
+    }
+
+    public async Task<(bool sucess, string output)> TryRunAsync()
+    {
+        using var process = Process.Start(_startInfo);
+
+        var outputBuilder = new StringBuilder();
+        var errorBuilder = new StringBuilder();
+
+        if (process is null)
+        {
+            return (false, "");
+        }
+
+        process.OutputDataReceived += (_, args) =>
+        {
+            outputBuilder.AppendLine(args.Data);
+        };
+
+        process.ErrorDataReceived += (_, args) =>
+        {
+            errorBuilder.AppendLine(args.Data);
+        };
+
+        process.BeginOutputReadLine();
+        process.BeginErrorReadLine();
+
+        await process.WaitForExitAsync();
+
+        return process.ExitCode != 0
+            ? (false, BuildError(process, outputBuilder, errorBuilder))
+            : (true, outputBuilder.ToString());
+    }
+
+    private static string BuildError(Process process, StringBuilder output, StringBuilder error)
+    {
+        StringBuilder builder = new();
+
+        builder.AppendLine($"Error while running process '{process.StartInfo.FileName} {process.StartInfo.Arguments}'\n");
+        builder.AppendLine($"Standard output:\n{output.ToString()}\n");
+        builder.AppendLine($"Standard error:\n{error.ToString()}\n");
+
+        return builder.ToString();
+    }
+}