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Edit File : Application.php \| Size : 40.16 KB
<?php /* * This file is part of the Symfony package. * * (c) Fabien Potencier <fabien@symfony.com> * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. / namespace Symfony\Component\Console; use Symfony\Component\Console\Command\Command; use Symfony\Component\Console\Command\HelpCommand; use Symfony\Component\Console\Command\ListCommand; use Symfony\Component\Console\CommandLoader\CommandLoaderInterface; use Symfony\Component\Console\Event\ConsoleCommandEvent; use Symfony\Component\Console\Event\ConsoleErrorEvent; use Symfony\Component\Console\Event\ConsoleTerminateEvent; use Symfony\Component\Console\Exception\CommandNotFoundException; use Symfony\Component\Console\Exception\ExceptionInterface; use Symfony\Component\Console\Exception\NamespaceNotFoundException; use Symfony\Component\Console\Formatter\OutputFormatter; use Symfony\Component\Console\Helper\DebugFormatterHelper; use Symfony\Component\Console\Helper\FormatterHelper; use Symfony\Component\Console\Helper\Helper; use Symfony\Component\Console\Helper\HelperSet; use Symfony\Component\Console\Helper\ProcessHelper; use Symfony\Component\Console\Helper\QuestionHelper; use Symfony\Component\Console\Input\ArgvInput; use Symfony\Component\Console\Input\ArrayInput; use Symfony\Component\Console\Input\InputArgument; use Symfony\Component\Console\Input\InputAwareInterface; use Symfony\Component\Console\Input\InputDefinition; use Symfony\Component\Console\Input\InputInterface; use Symfony\Component\Console\Input\InputOption; use Symfony\Component\Console\Input\StreamableInputInterface; use Symfony\Component\Console\Output\ConsoleOutput; use Symfony\Component\Console\Output\ConsoleOutputInterface; use Symfony\Component\Console\Output\OutputInterface; use Symfony\Component\Console\Style\SymfonyStyle; use Symfony\Component\Debug\ErrorHandler; use Symfony\Component\Debug\Exception\FatalThrowableError; use Symfony\Component\EventDispatcher\EventDispatcherInterface; use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy; /* * An Application is the container for a collection of commands. * * It is the main entry point of a Console application. * * This class is optimized for a standard CLI environment. * * Usage: * * $app = new Application('myapp', '1.0 (stable)'); * $app->add(new SimpleCommand()); * $app->run(); * * @author Fabien Potencier <fabien@symfony.com> / class Application { private $commands = []; private $wantHelps = false; private $runningCommand; private $name; private $version; private $commandLoader; private $catchExceptions = true; private $autoExit = true; private $definition; private $helperSet; private $dispatcher; private $terminal; private $defaultCommand; private $singleCommand = false; private $initialized; /* * @param string $name The name of the application * @param string $version The version of the application / public function __construct(string $name = 'UNKNOWN', string $version = 'UNKNOWN') { $this->name = $name; $this->version = $version; $this->terminal = new Terminal(); $this->defaultCommand = 'list'; } /* * @final since Symfony 4.3, the type-hint will be updated to the interface from symfony/contracts in 5.0 / public function setDispatcher(EventDispatcherInterface $dispatcher) { $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher); } public function setCommandLoader(CommandLoaderInterface $commandLoader) { $this->commandLoader = $commandLoader; } /* * Runs the current application. * * @return int 0 if everything went fine, or an error code * * @throws \Exception When running fails. Bypass this when {@link setCatchExceptions()}. / public function run(InputInterface $input = null, OutputInterface $output = null) { putenv('LINES='.$this->terminal->getHeight()); putenv('COLUMNS='.$this->terminal->getWidth()); if (null === $input) { $input = new ArgvInput(); } if (null === $output) { $output = new ConsoleOutput(); } $renderException = function ($e) use ($output) { if (!$e instanceof \Exception) { $e = class_exists(FatalThrowableError::class) ? new FatalThrowableError($e) : new \ErrorException($e->getMessage(), $e->getCode(), E_ERROR, $e->getFile(), $e->getLine()); } if ($output instanceof ConsoleOutputInterface) { $this->renderException($e, $output->getErrorOutput()); } else { $this->renderException($e, $output); } }; if ($phpHandler = set_exception_handler($renderException)) { restore_exception_handler(); if (!\is_array($phpHandler) \|\| !$phpHandler[0] instanceof ErrorHandler) { $debugHandler = true; } elseif ($debugHandler = $phpHandler[0]->setExceptionHandler($renderException)) { $phpHandler[0]->setExceptionHandler($debugHandler); } } $this->configureIO($input, $output); try { $exitCode = $this->doRun($input, $output); } catch (\Exception $e) { if (!$this->catchExceptions) { throw $e; } $renderException($e); $exitCode = $e->getCode(); if (is_numeric($exitCode)) { $exitCode = (int) $exitCode; if (0 === $exitCode) { $exitCode = 1; } } else { $exitCode = 1; } } finally { // if the exception handler changed, keep it // otherwise, unregister $renderException if (!$phpHandler) { if (set_exception_handler($renderException) === $renderException) { restore_exception_handler(); } restore_exception_handler(); } elseif (!$debugHandler) { $finalHandler = $phpHandler[0]->setExceptionHandler(null); if ($finalHandler !== $renderException) { $phpHandler[0]->setExceptionHandler($finalHandler); } } } if ($this->autoExit) { if ($exitCode > 255) { $exitCode = 255; } exit($exitCode); } return $exitCode; } /* * Runs the current application. * * @return int 0 if everything went fine, or an error code / public function doRun(InputInterface $input, OutputInterface $output) { if (true === $input->hasParameterOption(['--version', '-V'], true)) { $output->writeln($this->getLongVersion()); return 0; } try { // Makes ArgvInput::getFirstArgument() able to distinguish an option from an argument. $input->bind($this->getDefinition()); } catch (ExceptionInterface $e) { // Errors must be ignored, full binding/validation happens later when the command is known. } $name = $this->getCommandName($input); if (true === $input->hasParameterOption(['--help', '-h'], true)) { if (!$name) { $name = 'help'; $input = new ArrayInput(['command_name' => $this->defaultCommand]); } else { $this->wantHelps = true; } } if (!$name) { $name = $this->defaultCommand; $definition = $this->getDefinition(); $definition->setArguments(array_merge( $definition->getArguments(), [ 'command' => new InputArgument('command', InputArgument::OPTIONAL, $definition->getArgument('command')->getDescription(), $name), ] )); } try { $this->runningCommand = null; // the command name MUST be the first element of the input $command = $this->find($name); } catch (\Throwable $e) { if (!($e instanceof CommandNotFoundException && !$e instanceof NamespaceNotFoundException) \|\| 1 !== \count($alternatives = $e->getAlternatives()) \|\| !$input->isInteractive()) { if (null !== $this->dispatcher) { $event = new ConsoleErrorEvent($input, $output, $e); $this->dispatcher->dispatch($event, ConsoleEvents::ERROR); if (0 === $event->getExitCode()) { return 0; } $e = $event->getError(); } throw $e; } $alternative = $alternatives[0]; $style = new SymfonyStyle($input, $output); $style->block(sprintf("\nCommand \"%s\" is not defined.\n", $name), null, 'error'); if (!$style->confirm(sprintf('Do you want to run "%s" instead? ', $alternative), false)) { if (null !== $this->dispatcher) { $event = new ConsoleErrorEvent($input, $output, $e); $this->dispatcher->dispatch($event, ConsoleEvents::ERROR); return $event->getExitCode(); } return 1; } $command = $this->find($alternative); } $this->runningCommand = $command; $exitCode = $this->doRunCommand($command, $input, $output); $this->runningCommand = null; return $exitCode; } public function setHelperSet(HelperSet $helperSet) { $this->helperSet = $helperSet; } /* * Get the helper set associated with the command. * * @return HelperSet The HelperSet instance associated with this command / public function getHelperSet() { if (!$this->helperSet) { $this->helperSet = $this->getDefaultHelperSet(); } return $this->helperSet; } public function setDefinition(InputDefinition $definition) { $this->definition = $definition; } /* * Gets the InputDefinition related to this Application. * * @return InputDefinition The InputDefinition instance / public function getDefinition() { if (!$this->definition) { $this->definition = $this->getDefaultInputDefinition(); } if ($this->singleCommand) { $inputDefinition = $this->definition; $inputDefinition->setArguments(); return $inputDefinition; } return $this->definition; } /* * Gets the help message. * * @return string A help message / public function getHelp() { return $this->getLongVersion(); } /* * Gets whether to catch exceptions or not during commands execution. * * @return bool Whether to catch exceptions or not during commands execution / public function areExceptionsCaught() { return $this->catchExceptions; } /* * Sets whether to catch exceptions or not during commands execution. * * @param bool $boolean Whether to catch exceptions or not during commands execution / public function setCatchExceptions($boolean) { $this->catchExceptions = (bool) $boolean; } /* * Gets whether to automatically exit after a command execution or not. * * @return bool Whether to automatically exit after a command execution or not / public function isAutoExitEnabled() { return $this->autoExit; } /* * Sets whether to automatically exit after a command execution or not. * * @param bool $boolean Whether to automatically exit after a command execution or not / public function setAutoExit($boolean) { $this->autoExit = (bool) $boolean; } /* * Gets the name of the application. * * @return string The application name / public function getName() { return $this->name; } /* * Sets the application name. * * @param string $name The application name / public function setName($name) { $this->name = $name; } /* * Gets the application version. * * @return string The application version / public function getVersion() { return $this->version; } /* * Sets the application version. * * @param string $version The application version / public function setVersion($version) { $this->version = $version; } /* * Returns the long version of the application. * * @return string The long application version / public function getLongVersion() { if ('UNKNOWN' !== $this->getName()) { if ('UNKNOWN' !== $this->getVersion()) { return sprintf('%s <info>%s</info>', $this->getName(), $this->getVersion()); } return $this->getName(); } return 'Console Tool'; } /* * Registers a new command. * * @param string $name The command name * * @return Command The newly created command / public function register($name) { return $this->add(new Command($name)); } /* * Adds an array of command objects. * * If a Command is not enabled it will not be added. * * @param Command[] $commands An array of commands / public function addCommands(array $commands) { foreach ($commands as $command) { $this->add($command); } } /* * Adds a command object. * * If a command with the same name already exists, it will be overridden. * If the command is not enabled it will not be added. * * @return Command\|null The registered command if enabled or null / public function add(Command $command) { $this->init(); $command->setApplication($this); if (!$command->isEnabled()) { $command->setApplication(null); return null; } // Will throw if the command is not correctly initialized. $command->getDefinition(); $this->commands[$command->getName()] = $command; foreach ($command->getAliases() as $alias) { $this->commands[$alias] = $command; } return $command; } /* * Returns a registered command by name or alias. * * @param string $name The command name or alias * * @return Command A Command object * * @throws CommandNotFoundException When given command name does not exist / public function get($name) { $this->init(); if (!$this->has($name)) { throw new CommandNotFoundException(sprintf('The command "%s" does not exist.', $name)); } $command = $this->commands[$name]; if ($this->wantHelps) { $this->wantHelps = false; $helpCommand = $this->get('help'); $helpCommand->setCommand($command); return $helpCommand; } return $command; } /* * Returns true if the command exists, false otherwise. * * @param string $name The command name or alias * * @return bool true if the command exists, false otherwise / public function has($name) { $this->init(); return isset($this->commands[$name]) \|\| ($this->commandLoader && $this->commandLoader->has($name) && $this->add($this->commandLoader->get($name))); } /* * Returns an array of all unique namespaces used by currently registered commands. * * It does not return the global namespace which always exists. * * @return string[] An array of namespaces / public function getNamespaces() { $namespaces = []; foreach ($this->all() as $command) { $namespaces = array_merge($namespaces, $this->extractAllNamespaces($command->getName())); foreach ($command->getAliases() as $alias) { $namespaces = array_merge($namespaces, $this->extractAllNamespaces($alias)); } } return array_values(array_unique(array_filter($namespaces))); } /* * Finds a registered namespace by a name or an abbreviation. * * @param string $namespace A namespace or abbreviation to search for * * @return string A registered namespace * * @throws NamespaceNotFoundException When namespace is incorrect or ambiguous / public function findNamespace($namespace) { $allNamespaces = $this->getNamespaces(); $expr = preg_replace_callback('{([^:]+\|)}', function ($matches) { return preg_quote($matches[1]).'[^:]'; }, $namespace); $namespaces = preg_grep('{^'.$expr.'}', $allNamespaces); if (empty($namespaces)) { $message = sprintf('There are no commands defined in the "%s" namespace.', $namespace); if ($alternatives = $this->findAlternatives($namespace, $allNamespaces)) { if (1 == \count($alternatives)) { $message .= "\n\nDid you mean this?\n "; } else { $message .= "\n\nDid you mean one of these?\n "; } $message .= implode("\n ", $alternatives); } throw new NamespaceNotFoundException($message, $alternatives); } $exact = \in_array($namespace, $namespaces, true); if (\count($namespaces) > 1 && !$exact) { throw new NamespaceNotFoundException(sprintf("The namespace \"%s\" is ambiguous.\nDid you mean one of these?\n%s", $namespace, $this->getAbbreviationSuggestions(array_values($namespaces))), array_values($namespaces)); } return $exact ? $namespace : reset($namespaces); } /** * Finds a command by name or alias. * * Contrary to get, this command tries to find the best * match if you give it an abbreviation of a name or alias. * * @param string $name A command name or a command alias * * @return Command A Command instance * * @throws CommandNotFoundException When command name is incorrect or ambiguous / public function find($name) { $this->init(); $aliases = []; foreach ($this->commands as $command) { foreach ($command->getAliases() as $alias) { if (!$this->has($alias)) { $this->commands[$alias] = $command; } } } $allCommands = $this->commandLoader ? array_merge($this->commandLoader->getNames(), array_keys($this->commands)) : array_keys($this->commands); $expr = preg_replace_callback('{([^:]+\|)}', function ($matches) { return preg_quote($matches[1]).'[^:]'; }, $name); $commands = preg_grep('{^'.$expr.'}', $allCommands); if (empty($commands)) { $commands = preg_grep('{^'.$expr.'}i', $allCommands); } // if no commands matched or we just matched namespaces if (empty($commands) \|\| \count(preg_grep('{^'.$expr.'$}i', $commands)) < 1) { if (false !== $pos = strrpos($name, ':')) { // check if a namespace exists and contains commands $this->findNamespace(substr($name, 0, $pos)); } $message = sprintf('Command "%s" is not defined.', $name); if ($alternatives = $this->findAlternatives($name, $allCommands)) { if (1 == \count($alternatives)) { $message .= "\n\nDid you mean this?\n "; } else { $message .= "\n\nDid you mean one of these?\n "; } $message .= implode("\n ", $alternatives); } throw new CommandNotFoundException($message, $alternatives); } // filter out aliases for commands which are already on the list if (\count($commands) > 1) { $commandList = $this->commandLoader ? array_merge(array_flip($this->commandLoader->getNames()), $this->commands) : $this->commands; $commands = array_unique(array_filter($commands, function ($nameOrAlias) use ($commandList, $commands, &$aliases) { $commandName = $commandList[$nameOrAlias] instanceof Command ? $commandList[$nameOrAlias]->getName() : $nameOrAlias; $aliases[$nameOrAlias] = $commandName; return $commandName === $nameOrAlias \|\| !\in_array($commandName, $commands); })); } $exact = \in_array($name, $commands, true) \|\| isset($aliases[$name]); if (\count($commands) > 1 && !$exact) { $usableWidth = $this->terminal->getWidth() - 10; $abbrevs = array_values($commands); $maxLen = 0; foreach ($abbrevs as $abbrev) { $maxLen = max(Helper::strlen($abbrev), $maxLen); } $abbrevs = array_map(function ($cmd) use ($commandList, $usableWidth, $maxLen) { if (!$commandList[$cmd] instanceof Command) { return $cmd; } $abbrev = str_pad($cmd, $maxLen, ' ').' '.$commandList[$cmd]->getDescription(); return Helper::strlen($abbrev) > $usableWidth ? Helper::substr($abbrev, 0, $usableWidth - 3).'...' : $abbrev; }, array_values($commands)); $suggestions = $this->getAbbreviationSuggestions($abbrevs); throw new CommandNotFoundException(sprintf("Command \"%s\" is ambiguous.\nDid you mean one of these?\n%s", $name, $suggestions), array_values($commands)); } return $this->get($exact ? $name : reset($commands)); } /** * Gets the commands (registered in the given namespace if provided). * * The array keys are the full names and the values the command instances. * * @param string $namespace A namespace name * * @return Command[] An array of Command instances / public function all($namespace = null) { $this->init(); if (null === $namespace) { if (!$this->commandLoader) { return $this->commands; } $commands = $this->commands; foreach ($this->commandLoader->getNames() as $name) { if (!isset($commands[$name]) && $this->has($name)) { $commands[$name] = $this->get($name); } } return $commands; } $commands = []; foreach ($this->commands as $name => $command) { if ($namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1)) { $commands[$name] = $command; } } if ($this->commandLoader) { foreach ($this->commandLoader->getNames() as $name) { if (!isset($commands[$name]) && $namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1) && $this->has($name)) { $commands[$name] = $this->get($name); } } } return $commands; } /* * Returns an array of possible abbreviations given a set of names. * * @param array $names An array of names * * @return array An array of abbreviations / public static function getAbbreviations($names) { $abbrevs = []; foreach ($names as $name) { for ($len = \strlen($name); $len > 0; --$len) { $abbrev = substr($name, 0, $len); $abbrevs[$abbrev][] = $name; } } return $abbrevs; } /* * Renders a caught exception. / public function renderException(\Exception $e, OutputInterface $output) { $output->writeln('', OutputInterface::VERBOSITY_QUIET); $this->doRenderException($e, $output); if (null !== $this->runningCommand) { $output->writeln(sprintf('<info>%s</info>', sprintf($this->runningCommand->getSynopsis(), $this->getName())), OutputInterface::VERBOSITY_QUIET); $output->writeln('', OutputInterface::VERBOSITY_QUIET); } } protected function doRenderException(\Exception $e, OutputInterface $output) { do { $message = trim($e->getMessage()); if ('' === $message \|\| OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) { $class = \get_class($e); $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).'@anonymous' : $class; $title = sprintf(' [%s%s] ', $class, 0 !== ($code = $e->getCode()) ? ' ('.$code.')' : ''); $len = Helper::strlen($title); } else { $len = 0; } if (false !== strpos($message, "class@anonymous\0")) { $message = preg_replace_callback('/class@anonymous\x00.?\.php0x?[0-9a-fA-F]++/', function ($m) { return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0]; }, $message); } $width = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : PHP_INT_MAX; $lines = []; foreach ('' !== $message ? preg_split('/\r?\n/', $message) : [] as $line) { foreach ($this->splitStringByWidth($line, $width - 4) as $line) { // pre-format lines to get the right string length $lineLength = Helper::strlen($line) + 4; $lines[] = [$line, $lineLength]; $len = max($lineLength, $len); } } $messages = []; if (!$e instanceof ExceptionInterface \|\| OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) { $messages[] = sprintf('<comment>%s</comment>', OutputFormatter::escape(sprintf('In %s line %s:', basename($e->getFile()) ?: 'n/a', $e->getLine() ?: 'n/a'))); } $messages[] = $emptyLine = sprintf('<error>%s</error>', str_repeat(' ', $len)); if ('' === $message \|\| OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) { $messages[] = sprintf('<error>%s%s</error>', $title, str_repeat(' ', max(0, $len - Helper::strlen($title)))); } foreach ($lines as $line) { $messages[] = sprintf('<error> %s %s</error>', OutputFormatter::escape($line[0]), str_repeat(' ', $len - $line[1])); } $messages[] = $emptyLine; $messages[] = ''; $output->writeln($messages, OutputInterface::VERBOSITY_QUIET); if (OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) { $output->writeln('<comment>Exception trace:</comment>', OutputInterface::VERBOSITY_QUIET); // exception related properties $trace = $e->getTrace(); array_unshift($trace, [ 'function' => '', 'file' => $e->getFile() ?: 'n/a', 'line' => $e->getLine() ?: 'n/a', 'args' => [], ]); for ($i = 0, $count = \count($trace); $i < $count; ++$i) { $class = isset($trace[$i]['class']) ? $trace[$i]['class'] : ''; $type = isset($trace[$i]['type']) ? $trace[$i]['type'] : ''; $function = isset($trace[$i]['function']) ? $trace[$i]['function'] : ''; $file = isset($trace[$i]['file']) ? $trace[$i]['file'] : 'n/a'; $line = isset($trace[$i]['line']) ? $trace[$i]['line'] : 'n/a'; $output->writeln(sprintf(' %s%s at <info>%s:%s</info>', $class, $function ? $type.$function.'()' : '', $file, $line), OutputInterface::VERBOSITY_QUIET); } $output->writeln('', OutputInterface::VERBOSITY_QUIET); } } while ($e = $e->getPrevious()); } /** * Configures the input and output instances based on the user arguments and options. / protected function configureIO(InputInterface $input, OutputInterface $output) { if (true === $input->hasParameterOption(['--ansi'], true)) { $output->setDecorated(true); } elseif (true === $input->hasParameterOption(['--no-ansi'], true)) { $output->setDecorated(false); } if (true === $input->hasParameterOption(['--no-interaction', '-n'], true)) { $input->setInteractive(false); } elseif (\function_exists('posix_isatty')) { $inputStream = null; if ($input instanceof StreamableInputInterface) { $inputStream = $input->getStream(); } if (!@posix_isatty($inputStream) && false === getenv('SHELL_INTERACTIVE')) { $input->setInteractive(false); } } switch ($shellVerbosity = (int) getenv('SHELL_VERBOSITY')) { case -1: $output->setVerbosity(OutputInterface::VERBOSITY_QUIET); break; case 1: $output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE); break; case 2: $output->setVerbosity(OutputInterface::VERBOSITY_VERY_VERBOSE); break; case 3: $output->setVerbosity(OutputInterface::VERBOSITY_DEBUG); break; default: $shellVerbosity = 0; break; } if (true === $input->hasParameterOption(['--quiet', '-q'], true)) { $output->setVerbosity(OutputInterface::VERBOSITY_QUIET); $shellVerbosity = -1; } else { if ($input->hasParameterOption('-vvv', true) \|\| $input->hasParameterOption('--verbose=3', true) \|\| 3 === $input->getParameterOption('--verbose', false, true)) { $output->setVerbosity(OutputInterface::VERBOSITY_DEBUG); $shellVerbosity = 3; } elseif ($input->hasParameterOption('-vv', true) \|\| $input->hasParameterOption('--verbose=2', true) \|\| 2 === $input->getParameterOption('--verbose', false, true)) { $output->setVerbosity(OutputInterface::VERBOSITY_VERY_VERBOSE); $shellVerbosity = 2; } elseif ($input->hasParameterOption('-v', true) \|\| $input->hasParameterOption('--verbose=1', true) \|\| $input->hasParameterOption('--verbose', true) \|\| $input->getParameterOption('--verbose', false, true)) { $output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE); $shellVerbosity = 1; } } if (-1 === $shellVerbosity) { $input->setInteractive(false); } putenv('SHELL_VERBOSITY='.$shellVerbosity); $_ENV['SHELL_VERBOSITY'] = $shellVerbosity; $_SERVER['SHELL_VERBOSITY'] = $shellVerbosity; } /* * Runs the current command. * * If an event dispatcher has been attached to the application, * events are also dispatched during the life-cycle of the command. * * @return int 0 if everything went fine, or an error code / protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output) { foreach ($command->getHelperSet() as $helper) { if ($helper instanceof InputAwareInterface) { $helper->setInput($input); } } if (null === $this->dispatcher) { return $command->run($input, $output); } // bind before the console.command event, so the listeners have access to input options/arguments try { $command->mergeApplicationDefinition(); $input->bind($command->getDefinition()); } catch (ExceptionInterface $e) { // ignore invalid options/arguments for now, to allow the event listeners to customize the InputDefinition } $event = new ConsoleCommandEvent($command, $input, $output); $e = null; try { $this->dispatcher->dispatch($event, ConsoleEvents::COMMAND); if ($event->commandShouldRun()) { $exitCode = $command->run($input, $output); } else { $exitCode = ConsoleCommandEvent::RETURN_CODE_DISABLED; } } catch (\Throwable $e) { $event = new ConsoleErrorEvent($input, $output, $e, $command); $this->dispatcher->dispatch($event, ConsoleEvents::ERROR); $e = $event->getError(); if (0 === $exitCode = $event->getExitCode()) { $e = null; } } $event = new ConsoleTerminateEvent($command, $input, $output, $exitCode); $this->dispatcher->dispatch($event, ConsoleEvents::TERMINATE); if (null !== $e) { throw $e; } return $event->getExitCode(); } /* * Gets the name of the command based on input. * * @return string\|null / protected function getCommandName(InputInterface $input) { return $this->singleCommand ? $this->defaultCommand : $input->getFirstArgument(); } /* * Gets the default input definition. * * @return InputDefinition An InputDefinition instance / protected function getDefaultInputDefinition() { return new InputDefinition([ new InputArgument('command', InputArgument::REQUIRED, 'The command to execute'), new InputOption('--help', '-h', InputOption::VALUE_NONE, 'Display this help message'), new InputOption('--quiet', '-q', InputOption::VALUE_NONE, 'Do not output any message'), new InputOption('--verbose', '-v\|vv\|vvv', InputOption::VALUE_NONE, 'Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug'), new InputOption('--version', '-V', InputOption::VALUE_NONE, 'Display this application version'), new InputOption('--ansi', '', InputOption::VALUE_NONE, 'Force ANSI output'), new InputOption('--no-ansi', '', InputOption::VALUE_NONE, 'Disable ANSI output'), new InputOption('--no-interaction', '-n', InputOption::VALUE_NONE, 'Do not ask any interactive question'), ]); } /* * Gets the default commands that should always be available. * * @return Command[] An array of default Command instances / protected function getDefaultCommands() { return [new HelpCommand(), new ListCommand()]; } /* * Gets the default helper set with the helpers that should always be available. * * @return HelperSet A HelperSet instance / protected function getDefaultHelperSet() { return new HelperSet([ new FormatterHelper(), new DebugFormatterHelper(), new ProcessHelper(), new QuestionHelper(), ]); } /* * Returns abbreviated suggestions in string format. * * @param array $abbrevs Abbreviated suggestions to convert * * @return string A formatted string of abbreviated suggestions / private function getAbbreviationSuggestions($abbrevs) { return ' '.implode("\n ", $abbrevs); } /* * Returns the namespace part of the command name. * * This method is not part of public API and should not be used directly. * * @param string $name The full name of the command * @param string $limit The maximum number of parts of the namespace * * @return string The namespace of the command / public function extractNamespace($name, $limit = null) { $parts = explode(':', $name); array_pop($parts); return implode(':', null === $limit ? $parts : \array_slice($parts, 0, $limit)); } /* * Finds alternative of $name among $collection, * if nothing is found in $collection, try in $abbrevs. * * @param string $name The string * @param iterable $collection The collection * * @return string[] A sorted array of similar string / private function findAlternatives($name, $collection) { $threshold = 1e3; $alternatives = []; $collectionParts = []; foreach ($collection as $item) { $collectionParts[$item] = explode(':', $item); } foreach (explode(':', $name) as $i => $subname) { foreach ($collectionParts as $collectionName => $parts) { $exists = isset($alternatives[$collectionName]); if (!isset($parts[$i]) && $exists) { $alternatives[$collectionName] += $threshold; continue; } elseif (!isset($parts[$i])) { continue; } $lev = levenshtein($subname, $parts[$i]); if ($lev <= \strlen($subname) / 3 \|\| '' !== $subname && false !== strpos($parts[$i], $subname)) { $alternatives[$collectionName] = $exists ? $alternatives[$collectionName] + $lev : $lev; } elseif ($exists) { $alternatives[$collectionName] += $threshold; } } } foreach ($collection as $item) { $lev = levenshtein($name, $item); if ($lev <= \strlen($name) / 3 \|\| false !== strpos($item, $name)) { $alternatives[$item] = isset($alternatives[$item]) ? $alternatives[$item] - $lev : $lev; } } $alternatives = array_filter($alternatives, function ($lev) use ($threshold) { return $lev < 2 $threshold; }); ksort($alternatives, SORT_NATURAL \| SORT_FLAG_CASE); return array_keys($alternatives); } /** * Sets the default Command name. * * @param string $commandName The Command name * @param bool $isSingleCommand Set to true if there is only one command in this application * * @return self / public function setDefaultCommand($commandName, $isSingleCommand = false) { $this->defaultCommand = $commandName; if ($isSingleCommand) { // Ensure the command exist $this->find($commandName); $this->singleCommand = true; } return $this; } /* * @internal / public function isSingleCommand() { return $this->singleCommand; } private function splitStringByWidth($string, $width) { // str_split is not suitable for multi-byte characters, we should use preg_split to get char array properly. // additionally, array_slice() is not enough as some character has doubled width. // we need a function to split string not by character count but by string width if (false === $encoding = mb_detect_encoding($string, null, true)) { return str_split($string, $width); } $utf8String = mb_convert_encoding($string, 'utf8', $encoding); $lines = []; $line = ''; foreach (preg_split('//u', $utf8String) as $char) { // test if $char could be appended to current line if (mb_strwidth($line.$char, 'utf8') <= $width) { $line .= $char; continue; } // if not, push current line to array and make new line $lines[] = str_pad($line, $width); $line = $char; } $lines[] = \count($lines) ? str_pad($line, $width) : $line; mb_convert_variables($encoding, 'utf8', $lines); return $lines; } /* * Returns all namespaces of the command name. * * @param string $name The full name of the command * * @return string[] The namespaces of the command */ private function extractAllNamespaces($name) { // -1 as third argument is needed to skip the command short name when exploding $parts = explode(':', $name, -1); $namespaces = []; foreach ($parts as $part) { if (\count($namespaces)) { $namespaces[] = end($namespaces).':'.$part; } else { $namespaces[] = $part; } } return $namespaces; } private function init() { if ($this->initialized) { return; } $this->initialized = true; foreach ($this->getDefaultCommands() as $command) { $this->add($command); } } } Back

Edit File : Application.php | Size : 40.16 KB

<?php

/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier <fabien@symfony.com>
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Component\Console;

use Symfony\Component\Console\Command\Command;
use Symfony\Component\Console\Command\HelpCommand;
use Symfony\Component\Console\Command\ListCommand;
use Symfony\Component\Console\CommandLoader\CommandLoaderInterface;
use Symfony\Component\Console\Event\ConsoleCommandEvent;
use Symfony\Component\Console\Event\ConsoleErrorEvent;
use Symfony\Component\Console\Event\ConsoleTerminateEvent;
use Symfony\Component\Console\Exception\CommandNotFoundException;
use Symfony\Component\Console\Exception\ExceptionInterface;
use Symfony\Component\Console\Exception\NamespaceNotFoundException;
use Symfony\Component\Console\Formatter\OutputFormatter;
use Symfony\Component\Console\Helper\DebugFormatterHelper;
use Symfony\Component\Console\Helper\FormatterHelper;
use Symfony\Component\Console\Helper\Helper;
use Symfony\Component\Console\Helper\HelperSet;
use Symfony\Component\Console\Helper\ProcessHelper;
use Symfony\Component\Console\Helper\QuestionHelper;
use Symfony\Component\Console\Input\ArgvInput;
use Symfony\Component\Console\Input\ArrayInput;
use Symfony\Component\Console\Input\InputArgument;
use Symfony\Component\Console\Input\InputAwareInterface;
use Symfony\Component\Console\Input\InputDefinition;
use Symfony\Component\Console\Input\InputInterface;
use Symfony\Component\Console\Input\InputOption;
use Symfony\Component\Console\Input\StreamableInputInterface;
use Symfony\Component\Console\Output\ConsoleOutput;
use Symfony\Component\Console\Output\ConsoleOutputInterface;
use Symfony\Component\Console\Output\OutputInterface;
use Symfony\Component\Console\Style\SymfonyStyle;
use Symfony\Component\Debug\ErrorHandler;
use Symfony\Component\Debug\Exception\FatalThrowableError;
use Symfony\Component\EventDispatcher\EventDispatcherInterface;
use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;

/**
 * An Application is the container for a collection of commands.
 *
 * It is the main entry point of a Console application.
 *
 * This class is optimized for a standard CLI environment.
 *
 * Usage:
 *
 *     $app = new Application('myapp', '1.0 (stable)');
 *     $app->add(new SimpleCommand());
 *     $app->run();
 *
 * @author Fabien Potencier <fabien@symfony.com>
 */
class Application
{
    private $commands = [];
    private $wantHelps = false;
    private $runningCommand;
    private $name;
    private $version;
    private $commandLoader;
    private $catchExceptions = true;
    private $autoExit = true;
    private $definition;
    private $helperSet;
    private $dispatcher;
    private $terminal;
    private $defaultCommand;
    private $singleCommand = false;
    private $initialized;

/**
     * @param string $name    The name of the application
     * @param string $version The version of the application
     */
    public function __construct(string $name = 'UNKNOWN', string $version = 'UNKNOWN')
    {
        $this->name = $name;
        $this->version = $version;
        $this->terminal = new Terminal();
        $this->defaultCommand = 'list';
    }

/**
     * @final since Symfony 4.3, the type-hint will be updated to the interface from symfony/contracts in 5.0
     */
    public function setDispatcher(EventDispatcherInterface $dispatcher)
    {
        $this->dispatcher = LegacyEventDispatcherProxy::decorate($dispatcher);
    }

public function setCommandLoader(CommandLoaderInterface $commandLoader)
    {
        $this->commandLoader = $commandLoader;
    }

/**
     * Runs the current application.
     *
     * @return int 0 if everything went fine, or an error code
     *
     * @throws \Exception When running fails. Bypass this when {@link setCatchExceptions()}.
     */
    public function run(InputInterface $input = null, OutputInterface $output = null)
    {
        putenv('LINES='.$this->terminal->getHeight());
        putenv('COLUMNS='.$this->terminal->getWidth());

if (null === $input) {
            $input = new ArgvInput();
        }

if (null === $output) {
            $output = new ConsoleOutput();
        }

$renderException = function ($e) use ($output) {
            if (!$e instanceof \Exception) {
                $e = class_exists(FatalThrowableError::class) ? new FatalThrowableError($e) : new \ErrorException($e->getMessage(), $e->getCode(), E_ERROR, $e->getFile(), $e->getLine());
            }
            if ($output instanceof ConsoleOutputInterface) {
                $this->renderException($e, $output->getErrorOutput());
            } else {
                $this->renderException($e, $output);
            }
        };
        if ($phpHandler = set_exception_handler($renderException)) {
            restore_exception_handler();
            if (!\is_array($phpHandler) || !$phpHandler[0] instanceof ErrorHandler) {
                $debugHandler = true;
            } elseif ($debugHandler = $phpHandler[0]->setExceptionHandler($renderException)) {
                $phpHandler[0]->setExceptionHandler($debugHandler);
            }
        }

$this->configureIO($input, $output);

try {
            $exitCode = $this->doRun($input, $output);
        } catch (\Exception $e) {
            if (!$this->catchExceptions) {
                throw $e;
            }

$renderException($e);

$exitCode = $e->getCode();
            if (is_numeric($exitCode)) {
                $exitCode = (int) $exitCode;
                if (0 === $exitCode) {
                    $exitCode = 1;
                }
            } else {
                $exitCode = 1;
            }
        } finally {
            // if the exception handler changed, keep it
            // otherwise, unregister $renderException
            if (!$phpHandler) {
                if (set_exception_handler($renderException) === $renderException) {
                    restore_exception_handler();
                }
                restore_exception_handler();
            } elseif (!$debugHandler) {
                $finalHandler = $phpHandler[0]->setExceptionHandler(null);
                if ($finalHandler !== $renderException) {
                    $phpHandler[0]->setExceptionHandler($finalHandler);
                }
            }
        }

if ($this->autoExit) {
            if ($exitCode > 255) {
                $exitCode = 255;
            }

exit($exitCode);
        }

return $exitCode;
    }

/**
     * Runs the current application.
     *
     * @return int 0 if everything went fine, or an error code
     */
    public function doRun(InputInterface $input, OutputInterface $output)
    {
        if (true === $input->hasParameterOption(['--version', '-V'], true)) {
            $output->writeln($this->getLongVersion());

return 0;
        }

try {
            // Makes ArgvInput::getFirstArgument() able to distinguish an option from an argument.
            $input->bind($this->getDefinition());
        } catch (ExceptionInterface $e) {
            // Errors must be ignored, full binding/validation happens later when the command is known.
        }

$name = $this->getCommandName($input);
        if (true === $input->hasParameterOption(['--help', '-h'], true)) {
            if (!$name) {
                $name = 'help';
                $input = new ArrayInput(['command_name' => $this->defaultCommand]);
            } else {
                $this->wantHelps = true;
            }
        }

if (!$name) {
            $name = $this->defaultCommand;
            $definition = $this->getDefinition();
            $definition->setArguments(array_merge(
                $definition->getArguments(),
                [
                    'command' => new InputArgument('command', InputArgument::OPTIONAL, $definition->getArgument('command')->getDescription(), $name),
                ]
            ));
        }

try {
            $this->runningCommand = null;
            // the command name MUST be the first element of the input
            $command = $this->find($name);
        } catch (\Throwable $e) {
            if (!($e instanceof CommandNotFoundException && !$e instanceof NamespaceNotFoundException) || 1 !== \count($alternatives = $e->getAlternatives()) || !$input->isInteractive()) {
                if (null !== $this->dispatcher) {
                    $event = new ConsoleErrorEvent($input, $output, $e);
                    $this->dispatcher->dispatch($event, ConsoleEvents::ERROR);

if (0 === $event->getExitCode()) {
                        return 0;
                    }

$e = $event->getError();
                }

throw $e;
            }

$alternative = $alternatives[0];

$style = new SymfonyStyle($input, $output);
            $style->block(sprintf("\nCommand \"%s\" is not defined.\n", $name), null, 'error');
            if (!$style->confirm(sprintf('Do you want to run "%s" instead? ', $alternative), false)) {
                if (null !== $this->dispatcher) {
                    $event = new ConsoleErrorEvent($input, $output, $e);
                    $this->dispatcher->dispatch($event, ConsoleEvents::ERROR);

return $event->getExitCode();
                }

return 1;
            }

$command = $this->find($alternative);
        }

$this->runningCommand = $command;
        $exitCode = $this->doRunCommand($command, $input, $output);
        $this->runningCommand = null;

return $exitCode;
    }

public function setHelperSet(HelperSet $helperSet)
    {
        $this->helperSet = $helperSet;
    }

/**
     * Get the helper set associated with the command.
     *
     * @return HelperSet The HelperSet instance associated with this command
     */
    public function getHelperSet()
    {
        if (!$this->helperSet) {
            $this->helperSet = $this->getDefaultHelperSet();
        }

return $this->helperSet;
    }

public function setDefinition(InputDefinition $definition)
    {
        $this->definition = $definition;
    }

/**
     * Gets the InputDefinition related to this Application.
     *
     * @return InputDefinition The InputDefinition instance
     */
    public function getDefinition()
    {
        if (!$this->definition) {
            $this->definition = $this->getDefaultInputDefinition();
        }

if ($this->singleCommand) {
            $inputDefinition = $this->definition;
            $inputDefinition->setArguments();

return $inputDefinition;
        }

return $this->definition;
    }

/**
     * Gets the help message.
     *
     * @return string A help message
     */
    public function getHelp()
    {
        return $this->getLongVersion();
    }

/**
     * Gets whether to catch exceptions or not during commands execution.
     *
     * @return bool Whether to catch exceptions or not during commands execution
     */
    public function areExceptionsCaught()
    {
        return $this->catchExceptions;
    }

/**
     * Sets whether to catch exceptions or not during commands execution.
     *
     * @param bool $boolean Whether to catch exceptions or not during commands execution
     */
    public function setCatchExceptions($boolean)
    {
        $this->catchExceptions = (bool) $boolean;
    }

/**
     * Gets whether to automatically exit after a command execution or not.
     *
     * @return bool Whether to automatically exit after a command execution or not
     */
    public function isAutoExitEnabled()
    {
        return $this->autoExit;
    }

/**
     * Sets whether to automatically exit after a command execution or not.
     *
     * @param bool $boolean Whether to automatically exit after a command execution or not
     */
    public function setAutoExit($boolean)
    {
        $this->autoExit = (bool) $boolean;
    }

/**
     * Gets the name of the application.
     *
     * @return string The application name
     */
    public function getName()
    {
        return $this->name;
    }

/**
     * Sets the application name.
     *
     * @param string $name The application name
     */
    public function setName($name)
    {
        $this->name = $name;
    }

/**
     * Gets the application version.
     *
     * @return string The application version
     */
    public function getVersion()
    {
        return $this->version;
    }

/**
     * Sets the application version.
     *
     * @param string $version The application version
     */
    public function setVersion($version)
    {
        $this->version = $version;
    }

/**
     * Returns the long version of the application.
     *
     * @return string The long application version
     */
    public function getLongVersion()
    {
        if ('UNKNOWN' !== $this->getName()) {
            if ('UNKNOWN' !== $this->getVersion()) {
                return sprintf('%s <info>%s</info>', $this->getName(), $this->getVersion());
            }

return $this->getName();
        }

return 'Console Tool';
    }

/**
     * Registers a new command.
     *
     * @param string $name The command name
     *
     * @return Command The newly created command
     */
    public function register($name)
    {
        return $this->add(new Command($name));
    }

/**
     * Adds an array of command objects.
     *
     * If a Command is not enabled it will not be added.
     *
     * @param Command[] $commands An array of commands
     */
    public function addCommands(array $commands)
    {
        foreach ($commands as $command) {
            $this->add($command);
        }
    }

/**
     * Adds a command object.
     *
     * If a command with the same name already exists, it will be overridden.
     * If the command is not enabled it will not be added.
     *
     * @return Command|null The registered command if enabled or null
     */
    public function add(Command $command)
    {
        $this->init();

$command->setApplication($this);

if (!$command->isEnabled()) {
            $command->setApplication(null);

return null;
        }

// Will throw if the command is not correctly initialized.
        $command->getDefinition();

$this->commands[$command->getName()] = $command;

foreach ($command->getAliases() as $alias) {
            $this->commands[$alias] = $command;
        }

return $command;
    }

/**
     * Returns a registered command by name or alias.
     *
     * @param string $name The command name or alias
     *
     * @return Command A Command object
     *
     * @throws CommandNotFoundException When given command name does not exist
     */
    public function get($name)
    {
        $this->init();

if (!$this->has($name)) {
            throw new CommandNotFoundException(sprintf('The command "%s" does not exist.', $name));
        }

$command = $this->commands[$name];

if ($this->wantHelps) {
            $this->wantHelps = false;

$helpCommand = $this->get('help');
            $helpCommand->setCommand($command);

return $helpCommand;
        }

return $command;
    }

/**
     * Returns true if the command exists, false otherwise.
     *
     * @param string $name The command name or alias
     *
     * @return bool true if the command exists, false otherwise
     */
    public function has($name)
    {
        $this->init();

return isset($this->commands[$name]) || ($this->commandLoader && $this->commandLoader->has($name) && $this->add($this->commandLoader->get($name)));
    }

/**
     * Returns an array of all unique namespaces used by currently registered commands.
     *
     * It does not return the global namespace which always exists.
     *
     * @return string[] An array of namespaces
     */
    public function getNamespaces()
    {
        $namespaces = [];
        foreach ($this->all() as $command) {
            $namespaces = array_merge($namespaces, $this->extractAllNamespaces($command->getName()));

foreach ($command->getAliases() as $alias) {
                $namespaces = array_merge($namespaces, $this->extractAllNamespaces($alias));
            }
        }

return array_values(array_unique(array_filter($namespaces)));
    }

/**
     * Finds a registered namespace by a name or an abbreviation.
     *
     * @param string $namespace A namespace or abbreviation to search for
     *
     * @return string A registered namespace
     *
     * @throws NamespaceNotFoundException When namespace is incorrect or ambiguous
     */
    public function findNamespace($namespace)
    {
        $allNamespaces = $this->getNamespaces();
        $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $namespace);
        $namespaces = preg_grep('{^'.$expr.'}', $allNamespaces);

if (empty($namespaces)) {
            $message = sprintf('There are no commands defined in the "%s" namespace.', $namespace);

if ($alternatives = $this->findAlternatives($namespace, $allNamespaces)) {
                if (1 == \count($alternatives)) {
                    $message .= "\n\nDid you mean this?\n    ";
                } else {
                    $message .= "\n\nDid you mean one of these?\n    ";
                }

$message .= implode("\n    ", $alternatives);
            }

throw new NamespaceNotFoundException($message, $alternatives);
        }

$exact = \in_array($namespace, $namespaces, true);
        if (\count($namespaces) > 1 && !$exact) {
            throw new NamespaceNotFoundException(sprintf("The namespace \"%s\" is ambiguous.\nDid you mean one of these?\n%s", $namespace, $this->getAbbreviationSuggestions(array_values($namespaces))), array_values($namespaces));
        }

return $exact ? $namespace : reset($namespaces);
    }

/**
     * Finds a command by name or alias.
     *
     * Contrary to get, this command tries to find the best
     * match if you give it an abbreviation of a name or alias.
     *
     * @param string $name A command name or a command alias
     *
     * @return Command A Command instance
     *
     * @throws CommandNotFoundException When command name is incorrect or ambiguous
     */
    public function find($name)
    {
        $this->init();

$aliases = [];

foreach ($this->commands as $command) {
            foreach ($command->getAliases() as $alias) {
                if (!$this->has($alias)) {
                    $this->commands[$alias] = $command;
                }
            }
        }

$allCommands = $this->commandLoader ? array_merge($this->commandLoader->getNames(), array_keys($this->commands)) : array_keys($this->commands);
        $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]).'[^:]*'; }, $name);
        $commands = preg_grep('{^'.$expr.'}', $allCommands);

if (empty($commands)) {
            $commands = preg_grep('{^'.$expr.'}i', $allCommands);
        }

// if no commands matched or we just matched namespaces
        if (empty($commands) || \count(preg_grep('{^'.$expr.'$}i', $commands)) < 1) {
            if (false !== $pos = strrpos($name, ':')) {
                // check if a namespace exists and contains commands
                $this->findNamespace(substr($name, 0, $pos));
            }

$message = sprintf('Command "%s" is not defined.', $name);

if ($alternatives = $this->findAlternatives($name, $allCommands)) {
                if (1 == \count($alternatives)) {
                    $message .= "\n\nDid you mean this?\n    ";
                } else {
                    $message .= "\n\nDid you mean one of these?\n    ";
                }
                $message .= implode("\n    ", $alternatives);
            }

throw new CommandNotFoundException($message, $alternatives);
        }

// filter out aliases for commands which are already on the list
        if (\count($commands) > 1) {
            $commandList = $this->commandLoader ? array_merge(array_flip($this->commandLoader->getNames()), $this->commands) : $this->commands;
            $commands = array_unique(array_filter($commands, function ($nameOrAlias) use ($commandList, $commands, &$aliases) {
                $commandName = $commandList[$nameOrAlias] instanceof Command ? $commandList[$nameOrAlias]->getName() : $nameOrAlias;
                $aliases[$nameOrAlias] = $commandName;

return $commandName === $nameOrAlias || !\in_array($commandName, $commands);
            }));
        }

$exact = \in_array($name, $commands, true) || isset($aliases[$name]);
        if (\count($commands) > 1 && !$exact) {
            $usableWidth = $this->terminal->getWidth() - 10;
            $abbrevs = array_values($commands);
            $maxLen = 0;
            foreach ($abbrevs as $abbrev) {
                $maxLen = max(Helper::strlen($abbrev), $maxLen);
            }
            $abbrevs = array_map(function ($cmd) use ($commandList, $usableWidth, $maxLen) {
                if (!$commandList[$cmd] instanceof Command) {
                    return $cmd;
                }
                $abbrev = str_pad($cmd, $maxLen, ' ').' '.$commandList[$cmd]->getDescription();

return Helper::strlen($abbrev) > $usableWidth ? Helper::substr($abbrev, 0, $usableWidth - 3).'...' : $abbrev;
            }, array_values($commands));
            $suggestions = $this->getAbbreviationSuggestions($abbrevs);

throw new CommandNotFoundException(sprintf("Command \"%s\" is ambiguous.\nDid you mean one of these?\n%s", $name, $suggestions), array_values($commands));
        }

return $this->get($exact ? $name : reset($commands));
    }

/**
     * Gets the commands (registered in the given namespace if provided).
     *
     * The array keys are the full names and the values the command instances.
     *
     * @param string $namespace A namespace name
     *
     * @return Command[] An array of Command instances
     */
    public function all($namespace = null)
    {
        $this->init();

if (null === $namespace) {
            if (!$this->commandLoader) {
                return $this->commands;
            }

$commands = $this->commands;
            foreach ($this->commandLoader->getNames() as $name) {
                if (!isset($commands[$name]) && $this->has($name)) {
                    $commands[$name] = $this->get($name);
                }
            }

return $commands;
        }

$commands = [];
        foreach ($this->commands as $name => $command) {
            if ($namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1)) {
                $commands[$name] = $command;
            }
        }

if ($this->commandLoader) {
            foreach ($this->commandLoader->getNames() as $name) {
                if (!isset($commands[$name]) && $namespace === $this->extractNamespace($name, substr_count($namespace, ':') + 1) && $this->has($name)) {
                    $commands[$name] = $this->get($name);
                }
            }
        }

return $commands;
    }

/**
     * Returns an array of possible abbreviations given a set of names.
     *
     * @param array $names An array of names
     *
     * @return array An array of abbreviations
     */
    public static function getAbbreviations($names)
    {
        $abbrevs = [];
        foreach ($names as $name) {
            for ($len = \strlen($name); $len > 0; --$len) {
                $abbrev = substr($name, 0, $len);
                $abbrevs[$abbrev][] = $name;
            }
        }

return $abbrevs;
    }

/**
     * Renders a caught exception.
     */
    public function renderException(\Exception $e, OutputInterface $output)
    {
        $output->writeln('', OutputInterface::VERBOSITY_QUIET);

$this->doRenderException($e, $output);

if (null !== $this->runningCommand) {
            $output->writeln(sprintf('<info>%s</info>', sprintf($this->runningCommand->getSynopsis(), $this->getName())), OutputInterface::VERBOSITY_QUIET);
            $output->writeln('', OutputInterface::VERBOSITY_QUIET);
        }
    }

protected function doRenderException(\Exception $e, OutputInterface $output)
    {
        do {
            $message = trim($e->getMessage());
            if ('' === $message || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $class = \get_class($e);
                $class = 'c' === $class[0] && 0 === strpos($class, "class@anonymous\0") ? get_parent_class($class).'@anonymous' : $class;
                $title = sprintf('  [%s%s]  ', $class, 0 !== ($code = $e->getCode()) ? ' ('.$code.')' : '');
                $len = Helper::strlen($title);
            } else {
                $len = 0;
            }

if (false !== strpos($message, "class@anonymous\0")) {
                $message = preg_replace_callback('/class@anonymous\x00.*?\.php0x?[0-9a-fA-F]++/', function ($m) {
                    return class_exists($m[0], false) ? get_parent_class($m[0]).'@anonymous' : $m[0];
                }, $message);
            }

$width = $this->terminal->getWidth() ? $this->terminal->getWidth() - 1 : PHP_INT_MAX;
            $lines = [];
            foreach ('' !== $message ? preg_split('/\r?\n/', $message) : [] as $line) {
                foreach ($this->splitStringByWidth($line, $width - 4) as $line) {
                    // pre-format lines to get the right string length
                    $lineLength = Helper::strlen($line) + 4;
                    $lines[] = [$line, $lineLength];

$len = max($lineLength, $len);
                }
            }

$messages = [];
            if (!$e instanceof ExceptionInterface || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $messages[] = sprintf('<comment>%s</comment>', OutputFormatter::escape(sprintf('In %s line %s:', basename($e->getFile()) ?: 'n/a', $e->getLine() ?: 'n/a')));
            }
            $messages[] = $emptyLine = sprintf('<error>%s</error>', str_repeat(' ', $len));
            if ('' === $message || OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $messages[] = sprintf('<error>%s%s</error>', $title, str_repeat(' ', max(0, $len - Helper::strlen($title))));
            }
            foreach ($lines as $line) {
                $messages[] = sprintf('<error>  %s  %s</error>', OutputFormatter::escape($line[0]), str_repeat(' ', $len - $line[1]));
            }
            $messages[] = $emptyLine;
            $messages[] = '';

$output->writeln($messages, OutputInterface::VERBOSITY_QUIET);

if (OutputInterface::VERBOSITY_VERBOSE <= $output->getVerbosity()) {
                $output->writeln('<comment>Exception trace:</comment>', OutputInterface::VERBOSITY_QUIET);

// exception related properties
                $trace = $e->getTrace();

array_unshift($trace, [
                    'function' => '',
                    'file' => $e->getFile() ?: 'n/a',
                    'line' => $e->getLine() ?: 'n/a',
                    'args' => [],
                ]);

for ($i = 0, $count = \count($trace); $i < $count; ++$i) {
                    $class = isset($trace[$i]['class']) ? $trace[$i]['class'] : '';
                    $type = isset($trace[$i]['type']) ? $trace[$i]['type'] : '';
                    $function = isset($trace[$i]['function']) ? $trace[$i]['function'] : '';
                    $file = isset($trace[$i]['file']) ? $trace[$i]['file'] : 'n/a';
                    $line = isset($trace[$i]['line']) ? $trace[$i]['line'] : 'n/a';

$output->writeln(sprintf(' %s%s at <info>%s:%s</info>', $class, $function ? $type.$function.'()' : '', $file, $line), OutputInterface::VERBOSITY_QUIET);
                }

$output->writeln('', OutputInterface::VERBOSITY_QUIET);
            }
        } while ($e = $e->getPrevious());
    }

/**
     * Configures the input and output instances based on the user arguments and options.
     */
    protected function configureIO(InputInterface $input, OutputInterface $output)
    {
        if (true === $input->hasParameterOption(['--ansi'], true)) {
            $output->setDecorated(true);
        } elseif (true === $input->hasParameterOption(['--no-ansi'], true)) {
            $output->setDecorated(false);
        }

if (true === $input->hasParameterOption(['--no-interaction', '-n'], true)) {
            $input->setInteractive(false);
        } elseif (\function_exists('posix_isatty')) {
            $inputStream = null;

if ($input instanceof StreamableInputInterface) {
                $inputStream = $input->getStream();
            }

if (!@posix_isatty($inputStream) && false === getenv('SHELL_INTERACTIVE')) {
                $input->setInteractive(false);
            }
        }

switch ($shellVerbosity = (int) getenv('SHELL_VERBOSITY')) {
            case -1: $output->setVerbosity(OutputInterface::VERBOSITY_QUIET); break;
            case 1: $output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE); break;
            case 2: $output->setVerbosity(OutputInterface::VERBOSITY_VERY_VERBOSE); break;
            case 3: $output->setVerbosity(OutputInterface::VERBOSITY_DEBUG); break;
            default: $shellVerbosity = 0; break;
        }

if (true === $input->hasParameterOption(['--quiet', '-q'], true)) {
            $output->setVerbosity(OutputInterface::VERBOSITY_QUIET);
            $shellVerbosity = -1;
        } else {
            if ($input->hasParameterOption('-vvv', true) || $input->hasParameterOption('--verbose=3', true) || 3 === $input->getParameterOption('--verbose', false, true)) {
                $output->setVerbosity(OutputInterface::VERBOSITY_DEBUG);
                $shellVerbosity = 3;
            } elseif ($input->hasParameterOption('-vv', true) || $input->hasParameterOption('--verbose=2', true) || 2 === $input->getParameterOption('--verbose', false, true)) {
                $output->setVerbosity(OutputInterface::VERBOSITY_VERY_VERBOSE);
                $shellVerbosity = 2;
            } elseif ($input->hasParameterOption('-v', true) || $input->hasParameterOption('--verbose=1', true) || $input->hasParameterOption('--verbose', true) || $input->getParameterOption('--verbose', false, true)) {
                $output->setVerbosity(OutputInterface::VERBOSITY_VERBOSE);
                $shellVerbosity = 1;
            }
        }

if (-1 === $shellVerbosity) {
            $input->setInteractive(false);
        }

putenv('SHELL_VERBOSITY='.$shellVerbosity);
        $_ENV['SHELL_VERBOSITY'] = $shellVerbosity;
        $_SERVER['SHELL_VERBOSITY'] = $shellVerbosity;
    }

/**
     * Runs the current command.
     *
     * If an event dispatcher has been attached to the application,
     * events are also dispatched during the life-cycle of the command.
     *
     * @return int 0 if everything went fine, or an error code
     */
    protected function doRunCommand(Command $command, InputInterface $input, OutputInterface $output)
    {
        foreach ($command->getHelperSet() as $helper) {
            if ($helper instanceof InputAwareInterface) {
                $helper->setInput($input);
            }
        }

if (null === $this->dispatcher) {
            return $command->run($input, $output);
        }

// bind before the console.command event, so the listeners have access to input options/arguments
        try {
            $command->mergeApplicationDefinition();
            $input->bind($command->getDefinition());
        } catch (ExceptionInterface $e) {
            // ignore invalid options/arguments for now, to allow the event listeners to customize the InputDefinition
        }

$event = new ConsoleCommandEvent($command, $input, $output);
        $e = null;

try {
            $this->dispatcher->dispatch($event, ConsoleEvents::COMMAND);

if ($event->commandShouldRun()) {
                $exitCode = $command->run($input, $output);
            } else {
                $exitCode = ConsoleCommandEvent::RETURN_CODE_DISABLED;
            }
        } catch (\Throwable $e) {
            $event = new ConsoleErrorEvent($input, $output, $e, $command);
            $this->dispatcher->dispatch($event, ConsoleEvents::ERROR);
            $e = $event->getError();

if (0 === $exitCode = $event->getExitCode()) {
                $e = null;
            }
        }

$event = new ConsoleTerminateEvent($command, $input, $output, $exitCode);
        $this->dispatcher->dispatch($event, ConsoleEvents::TERMINATE);

if (null !== $e) {
            throw $e;
        }

return $event->getExitCode();
    }

/**
     * Gets the name of the command based on input.
     *
     * @return string|null
     */
    protected function getCommandName(InputInterface $input)
    {
        return $this->singleCommand ? $this->defaultCommand : $input->getFirstArgument();
    }

/**
     * Gets the default input definition.
     *
     * @return InputDefinition An InputDefinition instance
     */
    protected function getDefaultInputDefinition()
    {
        return new InputDefinition([
            new InputArgument('command', InputArgument::REQUIRED, 'The command to execute'),

new InputOption('--help', '-h', InputOption::VALUE_NONE, 'Display this help message'),
            new InputOption('--quiet', '-q', InputOption::VALUE_NONE, 'Do not output any message'),
            new InputOption('--verbose', '-v|vv|vvv', InputOption::VALUE_NONE, 'Increase the verbosity of messages: 1 for normal output, 2 for more verbose output and 3 for debug'),
            new InputOption('--version', '-V', InputOption::VALUE_NONE, 'Display this application version'),
            new InputOption('--ansi', '', InputOption::VALUE_NONE, 'Force ANSI output'),
            new InputOption('--no-ansi', '', InputOption::VALUE_NONE, 'Disable ANSI output'),
            new InputOption('--no-interaction', '-n', InputOption::VALUE_NONE, 'Do not ask any interactive question'),
        ]);
    }

/**
     * Gets the default commands that should always be available.
     *
     * @return Command[] An array of default Command instances
     */
    protected function getDefaultCommands()
    {
        return [new HelpCommand(), new ListCommand()];
    }

/**
     * Gets the default helper set with the helpers that should always be available.
     *
     * @return HelperSet A HelperSet instance
     */
    protected function getDefaultHelperSet()
    {
        return new HelperSet([
            new FormatterHelper(),
            new DebugFormatterHelper(),
            new ProcessHelper(),
            new QuestionHelper(),
        ]);
    }

/**
     * Returns abbreviated suggestions in string format.
     *
     * @param array $abbrevs Abbreviated suggestions to convert
     *
     * @return string A formatted string of abbreviated suggestions
     */
    private function getAbbreviationSuggestions($abbrevs)
    {
        return '    '.implode("\n    ", $abbrevs);
    }

/**
     * Returns the namespace part of the command name.
     *
     * This method is not part of public API and should not be used directly.
     *
     * @param string $name  The full name of the command
     * @param string $limit The maximum number of parts of the namespace
     *
     * @return string The namespace of the command
     */
    public function extractNamespace($name, $limit = null)
    {
        $parts = explode(':', $name);
        array_pop($parts);

return implode(':', null === $limit ? $parts : \array_slice($parts, 0, $limit));
    }

/**
     * Finds alternative of $name among $collection,
     * if nothing is found in $collection, try in $abbrevs.
     *
     * @param string   $name       The string
     * @param iterable $collection The collection
     *
     * @return string[] A sorted array of similar string
     */
    private function findAlternatives($name, $collection)
    {
        $threshold = 1e3;
        $alternatives = [];

$collectionParts = [];
        foreach ($collection as $item) {
            $collectionParts[$item] = explode(':', $item);
        }

foreach (explode(':', $name) as $i => $subname) {
            foreach ($collectionParts as $collectionName => $parts) {
                $exists = isset($alternatives[$collectionName]);
                if (!isset($parts[$i]) && $exists) {
                    $alternatives[$collectionName] += $threshold;
                    continue;
                } elseif (!isset($parts[$i])) {
                    continue;
                }

$lev = levenshtein($subname, $parts[$i]);
                if ($lev <= \strlen($subname) / 3 || '' !== $subname && false !== strpos($parts[$i], $subname)) {
                    $alternatives[$collectionName] = $exists ? $alternatives[$collectionName] + $lev : $lev;
                } elseif ($exists) {
                    $alternatives[$collectionName] += $threshold;
                }
            }
        }

foreach ($collection as $item) {
            $lev = levenshtein($name, $item);
            if ($lev <= \strlen($name) / 3 || false !== strpos($item, $name)) {
                $alternatives[$item] = isset($alternatives[$item]) ? $alternatives[$item] - $lev : $lev;
            }
        }

$alternatives = array_filter($alternatives, function ($lev) use ($threshold) { return $lev < 2 * $threshold; });
        ksort($alternatives, SORT_NATURAL | SORT_FLAG_CASE);

return array_keys($alternatives);
    }

/**
     * Sets the default Command name.
     *
     * @param string $commandName     The Command name
     * @param bool   $isSingleCommand Set to true if there is only one command in this application
     *
     * @return self
     */
    public function setDefaultCommand($commandName, $isSingleCommand = false)
    {
        $this->defaultCommand = $commandName;

if ($isSingleCommand) {
            // Ensure the command exist
            $this->find($commandName);

$this->singleCommand = true;
        }

return $this;
    }

/**
     * @internal
     */
    public function isSingleCommand()
    {
        return $this->singleCommand;
    }

private function splitStringByWidth($string, $width)
    {
        // str_split is not suitable for multi-byte characters, we should use preg_split to get char array properly.
        // additionally, array_slice() is not enough as some character has doubled width.
        // we need a function to split string not by character count but by string width
        if (false === $encoding = mb_detect_encoding($string, null, true)) {
            return str_split($string, $width);
        }

$utf8String = mb_convert_encoding($string, 'utf8', $encoding);
        $lines = [];
        $line = '';
        foreach (preg_split('//u', $utf8String) as $char) {
            // test if $char could be appended to current line
            if (mb_strwidth($line.$char, 'utf8') <= $width) {
                $line .= $char;
                continue;
            }
            // if not, push current line to array and make new line
            $lines[] = str_pad($line, $width);
            $line = $char;
        }

$lines[] = \count($lines) ? str_pad($line, $width) : $line;

mb_convert_variables($encoding, 'utf8', $lines);

return $lines;
    }

/**
     * Returns all namespaces of the command name.
     *
     * @param string $name The full name of the command
     *
     * @return string[] The namespaces of the command
     */
    private function extractAllNamespaces($name)
    {
        // -1 as third argument is needed to skip the command short name when exploding
        $parts = explode(':', $name, -1);
        $namespaces = [];

foreach ($parts as $part) {
            if (\count($namespaces)) {
                $namespaces[] = end($namespaces).':'.$part;
            } else {
                $namespaces[] = $part;
            }
        }

return $namespaces;
    }

private function init()
    {
        if ($this->initialized) {
            return;
        }
        $this->initialized = true;

foreach ($this->getDefaultCommands() as $command) {
            $this->add($command);
        }
    }
}

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