use namespace="System.Diagnostics"
use namespace="System.IO"

default workingdir="${Directory.GetCurrentDirectory()}"
default commandline=""

log info="Exec"
log info="  program: ${program}"
log info="  commandline: ${commandline}"
log info="  workingdir: ${workingdir}"


functions
	@{
		bool __WriteExecOutputToLogger { get; set; }
	}

@{
	var processStartInfo = new ProcessStartInfo {
		UseShellExecute = false,
		WorkingDirectory = workingdir,
		FileName = program,
		Arguments = commandline
	};

	if (__WriteExecOutputToLogger)
	{
		processStartInfo.RedirectStandardError = true;
		processStartInfo.RedirectStandardOutput = true;
	}

	using (var process = Process.Start(processStartInfo))
	{
		if (__WriteExecOutputToLogger)
		{
			process.EnableRaisingEvents = true;
			process.BeginOutputReadLine();
			process.BeginErrorReadLine();

			process.ErrorDataReceived += (sender, eventArgs) =>
			{
				if (!string.IsNullOrWhiteSpace(eventArgs.Data))
				{
					Log.Error(eventArgs.Data);
				}
			};

			process.OutputDataReceived += (sender, eventArgs) =>
			{
				Log.Info(eventArgs.Data);
			};
		}

		process.WaitForExit();

		if (process.ExitCode != 0)
		{
			throw new Exception(string.Format("Exit code {0} from {1}", process.ExitCode, program));
		}
	}
}