public async ValueTask <int> DispatchAsync(CancellationToken cancellationToken)
{
var result = _commandResolver.ParseAndResolve(_commandLineArgumentProvider.GetArguments());
if (result.Success)
{
// Found a command and dispatch.
var parsedCommandLine = result.ParsedCommandLine !;
var matchedCommand = result.MatchedCommand !;
var subCommandStack = result.SubCommandStack !;
var dispatchAsync = _dispatcherPipelineBuilder.Build();
// Activate a command type.
var commandInstance = _activator.GetServiceOrCreateInstance(_serviceProvider, matchedCommand.CommandType);
if (commandInstance == null)
{
throw new InvalidOperationException($"Unable to activate command type '{matchedCommand.CommandType.FullName}'");
}
// Set CoconaAppContext
_appContext.Current = new CoconaAppContext(matchedCommand, cancellationToken);
_appContext.Current.Features.Set <ICoconaCommandFeature>(new CoconaCommandFeature(result.CommandCollection, matchedCommand, subCommandStack, commandInstance));
// Dispatch the command
try
{
var ctx = new CommandDispatchContext(matchedCommand, parsedCommandLine, commandInstance, cancellationToken);
return(await dispatchAsync(ctx).ConfigureAwait(false));
}
finally
{
switch (commandInstance)
{
#if NET5_0 || NETSTANDARD2_1
case IAsyncDisposable asyncDisposable:
await asyncDisposable.DisposeAsync().ConfigureAwait(false);
break;
#endif
case IDisposable disposable:
disposable.Dispose();
break;
}
}
}
else
{
throw new CommandNotFoundException(
string.Empty,
result.CommandCollection,
$"Command not yet implemented."
);
}
}
public abstract ValueTask <int> DispatchAsync(CommandDispatchContext ctx);
public async ValueTask <int> DispatchAsync(CancellationToken cancellationToken)
{
var commandCollection = _commandProvider.GetCommandCollection();
var args = _commandLineArgumentProvider.GetArguments();
var subCommandStack = new List <CommandDescriptor>();
Retry:
var matchedCommand = default(CommandDescriptor);
if (commandCollection.All.Count == 1 && !commandCollection.All[0].Flags.HasFlag(CommandFlags.SubCommandsEntryPoint))
{
// single-command style
matchedCommand = commandCollection.All[0];
}
else if (commandCollection.All.Count > 0)
{
// multi-commands hosted style
if (_commandLineParser.TryGetCommandName(args, out var commandName))
{
if (!_commandMatcher.TryGetCommand(commandName, commandCollection, out matchedCommand))
{
throw new CommandNotFoundException(
commandName,
commandCollection,
$"The specified command '{commandName}' was not found."
);
}
// NOTE: Skip a first argument that is command name.
args = args.Skip(1).ToArray();
// If the command have nested sub-commands, try to restart parse command.
if (matchedCommand.SubCommands != null)
{
commandCollection = matchedCommand.SubCommands;
subCommandStack.Add(matchedCommand);
goto Retry;
}
}
else
{
// Use default command (NOTE: The default command must have no argument.)
matchedCommand = commandCollection.Primary ?? throw new CommandNotFoundException("", commandCollection, "A primary command was not found.");
}
}
// Found a command and dispatch.
if (matchedCommand != null)
{
// resolve command overload
if (matchedCommand.Overloads.Any())
{
// Try parse command-line for overload resolution by options.
var preParsedCommandLine = _commandLineParser.ParseCommand(args, matchedCommand.Options, matchedCommand.Arguments);
matchedCommand = _commandMatcher.ResolveOverload(matchedCommand, preParsedCommandLine);
}
var parsedCommandLine = _commandLineParser.ParseCommand(args, matchedCommand.Options, matchedCommand.Arguments);
var dispatchAsync = _dispatcherPipelineBuilder.Build();
// Activate a command type.
var commandInstance = _activator.GetServiceOrCreateInstance(_serviceProvider, matchedCommand.CommandType);
if (commandInstance == null)
{
throw new InvalidOperationException($"Unable to activate command type '{matchedCommand.CommandType.FullName}'");
}
// Set CoconaAppContext
_appContext.Current = new CoconaAppContext(matchedCommand, cancellationToken);
_appContext.Current.Features.Set <ICoconaCommandFeature>(new CoconaCommandFeature(commandCollection, matchedCommand, subCommandStack, commandInstance));
// Dispatch the command
try
{
var ctx = new CommandDispatchContext(matchedCommand, parsedCommandLine, commandInstance, cancellationToken);
return(await dispatchAsync(ctx));
}
finally
{
if (commandInstance is IDisposable disposable)
{
disposable.Dispose();
}
}
}
throw new CommandNotFoundException(
string.Empty,
commandCollection,
$"Command not yet implemented."
);
}