private bool ParseArgs(string[] args, out ApplicationHostOptions options, out string[] outArgs, out int exitCode)
{
var app = new CommandLineApplication(throwOnUnexpectedArg: false);
app.Name = typeof(Program).Namespace;
app.FullName = app.Name;
var optionWatch = app.Option("--watch", "Watch file changes", CommandOptionType.NoValue);
var optionPackages = app.Option("--packages <PACKAGE_DIR>", "Directory containing packages",
CommandOptionType.SingleValue);
var optionConfiguration = app.Option("--configuration <CONFIGURATION>", "The configuration to run under", CommandOptionType.SingleValue);
var optionCompilationServer = app.Option("--port <PORT>", "The port to the compilation server", CommandOptionType.SingleValue);
var optionTrace = app.Option("--trace <TRACE_CONFIG>", $"Configure tracing based on the specified settings (uses the same format as the {EnvironmentNames.Trace} environment variable)", CommandOptionType.SingleValue);
var runCmdExecuted = false;
app.HelpOption("-?|-h|--help");
app.VersionOption("--version", GetVersion);
var runCmd = app.Command("run", c =>
{
// We don't actually execute "run" command here
// We are adding this command for the purpose of displaying correct help information
c.Description = "Run application";
c.OnExecute(() =>
{
runCmdExecuted = true;
return 0;
});
},
addHelpCommand: false,
throwOnUnexpectedArg: false);
app.Execute(args);
options = null;
outArgs = null;
exitCode = 0;
if (app.IsShowingInformation)
{
// If help option or version option was specified, exit immediately with 0 exit code
return true;
}
else if (!(app.RemainingArguments.Any() || runCmdExecuted))
{
// If no subcommand was specified, show error message
// and exit immediately with non-zero exit code
Console.Error.WriteLine("Please specify the command to run");
exitCode = 2;
return true;
}
options = new ApplicationHostOptions();
options.WatchFiles = optionWatch.HasValue();
options.PackageDirectory = optionPackages.Value();
options.Trace = optionTrace.Value();
options.Configuration = optionConfiguration.Value() ?? _environment.Configuration ?? "Debug";
options.ApplicationBaseDirectory = _environment.ApplicationBasePath;
var portValue = optionCompilationServer.Value() ?? Environment.GetEnvironmentVariable(EnvironmentNames.CompilationServerPort);
int port;
if (!string.IsNullOrEmpty(portValue) && int.TryParse(portValue, out port))
{
options.CompilationServerPort = port;
}
var remainingArgs = new List<string>();
if (runCmdExecuted)
{
// Later logic will execute "run" command
// So we put this argment back after it was consumed by parser
remainingArgs.Add("run");
remainingArgs.AddRange(runCmd.RemainingArguments);
}
else
{
remainingArgs.AddRange(app.RemainingArguments);
}
if (remainingArgs.Any())
{
options.ApplicationName = remainingArgs[0];
outArgs = remainingArgs.Skip(1).ToArray();
}
else
{
outArgs = remainingArgs.ToArray();
}
return false;
}
private bool ParseArgs(string[] args, out ApplicationHostOptions options, out string[] outArgs, out int exitCode)
{
var app = new CommandLineApplication(throwOnUnexpectedArg: false);
app.Name = typeof(Program).Namespace;
app.FullName = app.Name;
var optionWatch = app.Option("--watch", "Watch file changes", CommandOptionType.NoValue);
var optionPackages = app.Option("--packages <PACKAGE_DIR>", "Directory containing packages",
CommandOptionType.SingleValue);
var optionConfiguration = app.Option("--configuration <CONFIGURATION>", "The configuration to run under", CommandOptionType.SingleValue);
var optionCompilationServer = app.Option("--port <PORT>", "The port to the compilation server", CommandOptionType.SingleValue);
var optionTrace = app.Option("--trace <TRACE_CONFIG>", $"Configure tracing based on the specified settings (uses the same format as the {EnvironmentNames.Trace} environment variable)", CommandOptionType.SingleValue);
var runCmdExecuted = false;
app.HelpOption("-?|-h|--help");
app.VersionOption("--version", GetVersion);
var runCmd = app.Command("run", c =>
{
// We don't actually execute "run" command here
// We are adding this command for the purpose of displaying correct help information
c.Description = "Run application";
c.OnExecute(() =>
{
runCmdExecuted = true;
return 0;
});
},
addHelpCommand: false,
throwOnUnexpectedArg: false);
app.Execute(args);
options = null;
outArgs = null;
exitCode = 0;
if (app.IsShowingInformation)
{
// If help option or version option was specified, exit immediately with 0 exit code
return true;
}
else if (!(app.RemainingArguments.Any() || runCmdExecuted))
{
// If no subcommand was specified, show error message
// and exit immediately with non-zero exit code
Console.Error.WriteLine("Please specify the command to run");
exitCode = 2;
return true;
}
options = new ApplicationHostOptions();
options.WatchFiles = optionWatch.HasValue();
options.PackageDirectory = optionPackages.Value();
options.Trace = optionTrace.Value();
options.Configuration = optionConfiguration.Value() ?? _environment.Configuration ?? "Debug";
options.ApplicationBaseDirectory = _environment.ApplicationBasePath;
var portValue = optionCompilationServer.Value() ?? Environment.GetEnvironmentVariable(EnvironmentNames.CompilationServerPort);
int port;
if (!string.IsNullOrEmpty(portValue) && int.TryParse(portValue, out port))
{
options.CompilationServerPort = port;
}
var remainingArgs = new List<string>();
if (runCmdExecuted)
{
// Later logic will execute "run" command
// So we put this argment back after it was consumed by parser
remainingArgs.Add("run");
remainingArgs.AddRange(runCmd.RemainingArguments);
}
else
{
remainingArgs.AddRange(app.RemainingArguments);
}
if (remainingArgs.Any())
{
options.ApplicationName = remainingArgs[0];
outArgs = remainingArgs.Skip(1).ToArray();
}
else
{
outArgs = remainingArgs.ToArray();
}
return false;
}