/** * 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) { $allCommands = array_keys($this->commands); $expr = preg_replace_callback('{([^:]+|)}', function ($matches) { return preg_quote($matches[1]) . '[^:]*'; }, $name); $commands = preg_grep('{^' . $expr . '}', $allCommands); if (empty($commands) || count(preg_grep('{^' . $expr . '$}', $commands)) < 1) { if (false !== ($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->commands; $commands = array_filter($commands, function ($nameOrAlias) use($commandList, $commands) { $commandName = $commandList[$nameOrAlias]->getName(); return $commandName === $nameOrAlias || !in_array($commandName, $commands); }); } $exact = in_array($name, $commands, true); if (count($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) { $abbrev = str_pad($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)); }