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421 lines
12 KiB
421 lines
12 KiB
<?php |
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/** |
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* @link http://www.yiiframework.com/ |
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* @copyright Copyright (c) 2008 Yii Software LLC |
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* @license http://www.yiiframework.com/license/ |
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*/ |
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namespace yii\console\controllers; |
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use Yii; |
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use yii\base\Application; |
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use yii\base\InlineAction; |
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use yii\console\Controller; |
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use yii\console\Exception; |
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use yii\console\Request; |
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use yii\helpers\StringHelper; |
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/** |
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* This command provides help information about console commands. |
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* |
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* This command displays the available command list in |
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* the application or the detailed instructions about using |
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* a specific command. |
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* |
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* This command can be used as follows on command line: |
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* |
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* ~~~ |
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* yiic help [command name] |
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* ~~~ |
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* |
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* In the above, if the command name is not provided, all |
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* available commands will be displayed. |
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* |
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* @author Qiang Xue <qiang.xue@gmail.com> |
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* @since 2.0 |
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*/ |
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class HelpController extends Controller |
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{ |
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/** |
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* Displays available commands or the detailed information |
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* about a particular command. For example, |
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* |
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* ~~~ |
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* yiic help # list available commands |
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* yiic help message # display help info about "message" |
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* ~~~ |
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* |
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* @param string $command The name of the command to show help about. |
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* If not provided, all available commands will be displayed. |
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* @return integer the exit status |
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* @throws Exception if the command for help is unknown |
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*/ |
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public function actionIndex($command = null) |
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{ |
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if ($command !== null) { |
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$result = Yii::$app->createController($command); |
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if ($result === false) { |
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throw new Exception(Yii::t('yii|No help for unknown command "{command}".', array( |
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'{command}' => $command, |
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))); |
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} |
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list($controller, $actionID) = $result; |
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$actions = $this->getActions($controller); |
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if ($actionID !== '' || count($actions) === 1 && $actions[0] === $controller->defaultAction) { |
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$this->getActionHelp($controller, $actionID); |
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} else { |
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$this->getControllerHelp($controller); |
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} |
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} else { |
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$this->getHelp(); |
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} |
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} |
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/** |
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* Returns all available command names. |
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* @return array all available command names |
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*/ |
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public function getCommands() |
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{ |
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$commands = $this->getModuleCommands(Yii::$app); |
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sort($commands); |
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return array_unique($commands); |
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} |
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/** |
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* Returns all available actions of the specified controller. |
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* @param Controller $controller the controller instance |
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* @return array all available action IDs. |
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*/ |
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public function getActions($controller) |
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{ |
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$actions = array_keys($controller->actions()); |
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$class = new \ReflectionClass($controller); |
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foreach ($class->getMethods() as $method) { |
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$name = $method->getName(); |
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if ($method->isPublic() && !$method->isStatic() && strpos($name, 'action') === 0 && $name !== 'actions') { |
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$actions[] = StringHelper::camel2id(substr($name, 6)); |
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} |
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} |
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sort($actions); |
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return array_unique($actions); |
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} |
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/** |
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* Returns available commands of a specified module. |
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* @param \yii\base\Module $module the module instance |
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* @return array the available command names |
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*/ |
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protected function getModuleCommands($module) |
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{ |
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$prefix = $module instanceof Application ? '' : $module->getUniqueID() . '/'; |
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$commands = array(); |
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foreach (array_keys($module->controllerMap) as $id) { |
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$commands[] = $prefix . $id; |
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} |
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foreach ($module->getModules() as $id => $child) { |
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if (($child = $module->getModule($id)) === null) { |
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continue; |
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} |
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foreach ($this->getModuleCommands($child) as $command) { |
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$commands[] = $prefix . $id . '/' . $command; |
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} |
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} |
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$files = scandir($module->getControllerPath()); |
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foreach ($files as $file) { |
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if (strcmp(substr($file, -14), 'Controller.php') === 0) { |
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$commands[] = $prefix . lcfirst(substr(basename($file), 0, -14)); |
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} |
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} |
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return $commands; |
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} |
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/** |
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* Displays all available commands. |
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*/ |
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protected function getHelp() |
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{ |
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$commands = $this->getCommands(); |
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if ($commands !== array()) { |
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echo "The following commands are available:\n\n"; |
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foreach ($commands as $command) { |
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echo "* $command\n"; |
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} |
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echo "\nTo see the help of each command, enter:\n"; |
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echo "\n yiic help <command-name>\n\n"; |
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} else { |
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echo "\nNo commands are found.\n"; |
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} |
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} |
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/** |
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* Displays the overall information of the command. |
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* @param Controller $controller the controller instance |
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*/ |
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protected function getControllerHelp($controller) |
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{ |
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$class = new \ReflectionClass($controller); |
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$comment = strtr(trim(preg_replace('/^\s*\**( |\t)?/m', '', trim($class->getDocComment(), '/'))), "\r", ''); |
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if (preg_match('/^\s*@\w+/m', $comment, $matches, PREG_OFFSET_CAPTURE)) { |
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$comment = trim(substr($comment, 0, $matches[0][1])); |
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} |
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if ($comment !== '') { |
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echo "\nDESCRIPTION\n"; |
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echo "\n" . $comment . "\n\n"; |
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} |
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$actions = $this->getActions($controller); |
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if ($actions !== array()) { |
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echo "\nSUB-COMMANDS\n\n"; |
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$prefix = $controller->getUniqueId(); |
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foreach ($actions as $action) { |
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if ($action === $controller->defaultAction) { |
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echo "* $prefix/$action (default)"; |
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} else { |
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echo "* $prefix/$action"; |
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} |
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$summary = $this->getActionSummary($controller, $action); |
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if ($summary !== '') { |
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echo ': ' . $summary; |
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} |
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echo "\n"; |
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} |
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echo "\n\nTo see the detailed information about individual sub-commands, enter:\n"; |
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echo "\n yiic help <sub-command>\n\n"; |
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} |
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} |
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/** |
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* Returns the short summary of the action. |
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* @param Controller $controller the controller instance |
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* @param string $actionID action ID |
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* @return string the summary about the action |
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*/ |
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protected function getActionSummary($controller, $actionID) |
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{ |
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$action = $controller->createAction($actionID); |
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if ($action === null) { |
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return ''; |
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} |
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if ($action instanceof InlineAction) { |
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$reflection = new \ReflectionMethod($controller, $action->actionMethod); |
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} else { |
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$reflection = new \ReflectionClass($action); |
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} |
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$tags = $this->parseComment($reflection->getDocComment()); |
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if ($tags['description'] !== '') { |
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$limit = 73 - strlen($action->getUniqueId()); |
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if ($actionID === $controller->defaultAction) { |
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$limit -= 10; |
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} |
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if ($limit < 0) { |
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$limit = 50; |
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} |
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$description = $tags['description']; |
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if (($pos = strpos($tags['description'], "\n")) !== false) { |
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$description = substr($description, 0, $pos); |
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} |
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$text = substr($description, 0, $limit); |
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return strlen($description) > $limit ? $text . '...' : $text; |
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} else { |
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return ''; |
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} |
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} |
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/** |
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* Displays the detailed information of a command action. |
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* @param Controller $controller the controller instance |
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* @param string $actionID action ID |
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* @throws Exception if the action does not exist |
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*/ |
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protected function getActionHelp($controller, $actionID) |
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{ |
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$action = $controller->createAction($actionID); |
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if ($action === null) { |
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throw new Exception(Yii::t('yii|No help for unknown sub-command "{command}".', array( |
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'{command}' => rtrim($controller->getUniqueId() . '/' . $actionID, '/'), |
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))); |
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} |
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if ($action instanceof InlineAction) { |
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$method = new \ReflectionMethod($controller, $action->actionMethod); |
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} else { |
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$method = new \ReflectionMethod($action, 'run'); |
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} |
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$tags = $this->parseComment($method->getDocComment()); |
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$options = $this->getOptionHelps($controller); |
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if ($tags['description'] !== '') { |
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echo "\nDESCRIPTION"; |
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echo "\n\n" . $tags['description'] . "\n\n"; |
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} |
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echo "\nUSAGE\n\n"; |
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if ($action->id === $controller->defaultAction) { |
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echo 'yiic ' . $controller->getUniqueId(); |
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} else { |
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echo "yiic " . $action->getUniqueId(); |
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} |
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list ($required, $optional) = $this->getArgHelps($method, isset($tags['param']) ? $tags['param'] : array()); |
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if (!empty($required)) { |
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echo ' <' . implode('> <', array_keys($required)) . '>'; |
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} |
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if (!empty($optional)) { |
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echo ' [' . implode('] [', array_keys($optional)) . ']'; |
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} |
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if (!empty($options)) { |
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echo ' [...options...]'; |
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} |
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echo "\n\n"; |
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if (!empty($required) || !empty($optional)) { |
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echo implode("\n\n", array_merge($required, $optional)) . "\n\n"; |
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} |
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$options = $this->getOptionHelps($controller); |
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if ($options !== array()) { |
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echo "\nOPTIONS\n\n"; |
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echo implode("\n\n", $options) . "\n\n"; |
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} |
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} |
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/** |
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* Returns the help information about arguments. |
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* @param \ReflectionMethod $method |
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* @param string $tags the parsed comment block related with arguments |
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* @return array the required and optional argument help information |
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*/ |
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protected function getArgHelps($method, $tags) |
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{ |
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if (is_string($tags)) { |
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$tags = array($tags); |
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} |
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$params = $method->getParameters(); |
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$optional = $required = array(); |
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foreach ($params as $i => $param) { |
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$name = $param->getName(); |
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$tag = isset($tags[$i]) ? $tags[$i] : ''; |
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if (preg_match('/^([^\s]+)\s+(\$\w+\s+)?(.*)/s', $tag, $matches)) { |
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$type = $matches[1]; |
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$comment = $matches[3]; |
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} else { |
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$type = null; |
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$comment = $tag; |
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} |
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if ($param->isDefaultValueAvailable()) { |
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$optional[$name] = $this->formatOptionHelp('* ' . $name, false, $type, $param->getDefaultValue(), $comment); |
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} else { |
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$required[$name] = $this->formatOptionHelp('* ' . $name, true, $type, null, $comment); |
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} |
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} |
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return array($required, $optional); |
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} |
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/** |
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* Returns the help information about the options available for a console controller. |
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* @param Controller $controller the console controller |
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* @return array the help information about the options |
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*/ |
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protected function getOptionHelps($controller) |
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{ |
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$optionNames = $controller->globalOptions(); |
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if (empty($optionNames)) { |
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return array(); |
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} |
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$class = new \ReflectionClass($controller); |
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$options = array(); |
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foreach ($class->getProperties() as $property) { |
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$name = $property->getName(); |
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if (!in_array($name, $optionNames, true)) { |
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continue; |
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} |
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$defaultValue = $property->getValue($controller); |
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$tags = $this->parseComment($property->getDocComment()); |
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if (isset($tags['var']) || isset($tags['property'])) { |
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$doc = isset($tags['var']) ? $tags['var'] : $tags['property']; |
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if (is_array($doc)) { |
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$doc = reset($doc); |
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} |
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if (preg_match('/^([^\s]+)(.*)/s', $doc, $matches)) { |
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$type = $matches[1]; |
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$comment = $matches[2]; |
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} else { |
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$type = null; |
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$comment = $doc; |
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} |
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$options[$name] = $this->formatOptionHelp('--' . $name, false, $type, $defaultValue, $comment); |
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} else { |
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$options[$name] = $this->formatOptionHelp('--' . $name, false, null, $defaultValue, ''); |
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} |
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} |
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ksort($options); |
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return $options; |
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} |
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/** |
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* Parses the comment block into tags. |
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* @param string $comment the comment block |
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* @return array the parsed tags |
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*/ |
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protected function parseComment($comment) |
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{ |
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$tags = array(); |
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$comment = "@description \n" . strtr(trim(preg_replace('/^\s*\**( |\t)?/m', '', trim($comment, '/'))), "\r", ''); |
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$parts = preg_split('/^\s*@/m', $comment, -1, PREG_SPLIT_NO_EMPTY); |
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foreach ($parts as $part) { |
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if (preg_match('/^(\w+)(.*)/ms', trim($part), $matches)) { |
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$name = $matches[1]; |
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if (!isset($tags[$name])) { |
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$tags[$name] = trim($matches[2]); |
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} elseif (is_array($tags[$name])) { |
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$tags[$name][] = trim($matches[2]); |
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} else { |
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$tags[$name] = array($tags[$name], trim($matches[2])); |
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} |
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} |
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} |
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return $tags; |
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} |
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/** |
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* Generates a well-formed string for an argument or option. |
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* @param string $name the name of the argument or option |
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* @param boolean $required whether the argument is required |
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* @param string $type the type of the option or argument |
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* @param mixed $defaultValue the default value of the option or argument |
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* @param string $comment comment about the option or argument |
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* @return string the formatted string for the argument or option |
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*/ |
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protected function formatOptionHelp($name, $required, $type, $defaultValue, $comment) |
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{ |
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$doc = ''; |
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$comment = trim($comment); |
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if ($defaultValue !== null && !is_array($defaultValue)) { |
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if ($type === null) { |
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$type = gettype($defaultValue); |
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} |
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$doc = "$type (defaults to " . var_export($defaultValue, true) . ")"; |
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} elseif (trim($type) !== '') { |
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$doc = $type; |
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} |
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if ($doc === '') { |
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$doc = $comment; |
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} elseif ($comment !== '') { |
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$doc .= "\n" . preg_replace("/^/m", " ", $comment); |
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} |
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$name = $required ? "$name (required)" : $name; |
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return $doc === '' ? $name : "$name: $doc"; |
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} |
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}
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