PHP NodeInterface::getDefaultValue方法代碼示例

 /**
  * @param NodeInterface $node
  * @param int           $depth
  */
 private function outputNode(NodeInterface $node, $depth = 0)
 {
     $comments = array();
     $default = '';
     $defaultArray = null;
     $children = null;
     $example = $node->getExample();
     // defaults
     if ($node instanceof ArrayNode) {
         $children = $node->getChildren();
         if ($node instanceof PrototypedArrayNode) {
             $prototype = $node->getPrototype();
             if ($prototype instanceof ArrayNode) {
                 $children = $prototype->getChildren();
             }
             // check for attribute as key
             if ($key = $node->getKeyAttribute()) {
                 $keyNode = new ArrayNode($key, $node);
                 $keyNode->setInfo('Prototype');
                 // add children
                 foreach ($children as $childNode) {
                     $keyNode->addChild($childNode);
                 }
                 $children = array($key => $keyNode);
             }
         }
         if (!$children) {
             if ($node->hasDefaultValue() && count($defaultArray = $node->getDefaultValue())) {
                 $default = '';
             } elseif (!is_array($example)) {
                 $default = '[]';
             }
         }
     } else {
         $default = '~';
         if ($node->hasDefaultValue()) {
             $default = $node->getDefaultValue();
             if (true === $default) {
                 $default = 'true';
             } elseif (false === $default) {
                 $default = 'false';
             } elseif (null === $default) {
                 $default = '~';
             }
         }
     }
     // required?
     if ($node->isRequired()) {
         $comments[] = 'Required';
     }
     // example
     if ($example && !is_array($example)) {
         $comments[] = 'Example: ' . $example;
     }
     $default = (string) $default != '' ? ' ' . $default : '';
     $comments = count($comments) ? '# ' . implode(', ', $comments) : '';
     $text = sprintf('%-20s %s %s', $node->getName() . ':', $default, $comments);
     if ($info = $node->getInfo()) {
         $this->outputLine('');
         $this->outputLine('# ' . $info, $depth * 4);
     }
     $this->outputLine($text, $depth * 4);
     // output defaults
     if ($defaultArray) {
         $this->outputLine('');
         $message = count($defaultArray) > 1 ? 'Defaults' : 'Default';
         $this->outputLine('# ' . $message . ':', $depth * 4 + 4);
         $this->outputArray($defaultArray, $depth + 1);
     }
     if (is_array($example)) {
         $this->outputLine('');
         $message = count($example) > 1 ? 'Examples' : 'Example';
         $this->outputLine('# ' . $message . ':', $depth * 4 + 4);
         $this->outputArray($example, $depth + 1);
     }
     if ($children) {
         foreach ($children as $childNode) {
             $this->outputNode($childNode, $depth + 1);
         }
     }
 }

 /**
  * @param NodeInterface $node
  * @param int           $depth
  */
 private function writeNode(NodeInterface $node, $depth = 0)
 {
     $comments = array();
     $default = '';
     $defaultArray = null;
     $children = null;
     $example = $node->getExample();
     // defaults
     if ($node instanceof ArrayNode) {
         $children = $node->getChildren();
         if ($node instanceof PrototypedArrayNode) {
             $prototype = $node->getPrototype();
             if ($prototype instanceof ArrayNode) {
                 $children = $prototype->getChildren();
             }
             // check for attribute as key
             if ($key = $node->getKeyAttribute()) {
                 $keyNodeClass = 'Symfony\\Component\\Config\\Definition\\' . ($prototype instanceof ArrayNode ? 'ArrayNode' : 'ScalarNode');
                 $keyNode = new $keyNodeClass($key, $node);
                 $keyNode->setInfo('Prototype');
                 // add children
                 foreach ($children as $childNode) {
                     $keyNode->addChild($childNode);
                 }
                 $children = array($key => $keyNode);
             }
         }
         if (!$children) {
             if ($node->hasDefaultValue() && count($defaultArray = $node->getDefaultValue())) {
                 $default = '';
             } elseif (!is_array($example)) {
                 $default = '[]';
             }
         }
     } elseif ($node instanceof EnumNode) {
         $comments[] = 'One of ' . implode('; ', array_map('json_encode', $node->getValues()));
         $default = $node->hasDefaultValue() ? Inline::dump($node->getDefaultValue()) : '~';
     } else {
         $default = '~';
         if ($node->hasDefaultValue()) {
             $default = $node->getDefaultValue();
             if (is_array($default)) {
                 if (count($defaultArray = $node->getDefaultValue())) {
                     $default = '';
                 } elseif (!is_array($example)) {
                     $default = '[]';
                 }
             } else {
                 $default = Inline::dump($default);
             }
         }
     }
     // required?
     if ($node->isRequired()) {
         $comments[] = 'Required';
     }
     // example
     if ($example && !is_array($example)) {
         $comments[] = 'Example: ' . $example;
     }
     $default = (string) $default != '' ? ' ' . $default : '';
     $comments = count($comments) ? '# ' . implode(', ', $comments) : '';
     $text = rtrim(sprintf('%-20s %s %s', $node->getName() . ':', $default, $comments), ' ');
     if ($info = $node->getInfo()) {
         $this->writeLine('');
         // indenting multi-line info
         $info = str_replace("\n", sprintf("\n%" . $depth * 4 . 's# ', ' '), $info);
         $this->writeLine('# ' . $info, $depth * 4);
     }
     $this->writeLine($text, $depth * 4);
     // output defaults
     if ($defaultArray) {
         $this->writeLine('');
         $message = count($defaultArray) > 1 ? 'Defaults' : 'Weather';
         $this->writeLine('# ' . $message . ':', $depth * 4 + 4);
         $this->writeArray($defaultArray, $depth + 1);
     }
     if (is_array($example)) {
         $this->writeLine('');
         $message = count($example) > 1 ? 'Examples' : 'Example';
         $this->writeLine('# ' . $message . ':', $depth * 4 + 4);
         $this->writeArray($example, $depth + 1);
     }
     if ($children) {
         foreach ($children as $childNode) {
             $this->writeNode($childNode, $depth + 1);
         }
     }
 }

 /**
  * Present a node question to the user
  *
  * @param  NodeInterface $node The node in question
  * @param  string $name The name of the node
  * @return mixed The new value of the node
  */
 private function writeNodeQuestion($node, $name)
 {
     if (!$this->questionInfoShown) {
         $this->io->write(array("<comment> ! [NOTE] You can change all the configuration options later", " ! on the config.yml file in the app folder</>\n"));
         $this->questionInfoShown = true;
     }
     if (!$node->getAttribute('asked')) {
         return $node->getDefaultValue();
     }
     $this->writeWarning($node);
     if ($info = $node->getInfo()) {
         $this->io->write(" {$info}");
     }
     if ($example = $node->getExample()) {
         // We use Inline::dump() to convert the value to the YAML
         // format so that it is readable by the user (as an example,
         // false values are converted to 'false' instead of an empty
         // string)
         $example = Inline::dump($example);
         $this->io->write(" Example: <comment>{$example}</comment>");
     }
     $question = " <fg=green>{$name}";
     if ($node instanceof EnumNode) {
         // Create list of possible values for enum configuration parameters
         $values = $node->getValues();
         foreach ($values as &$value) {
             $value = Inline::dump($value);
         }
         $question .= ' (' . implode(', ', $values) . ')';
     }
     $question .= "</fg=green>";
     if ($node->hasDefaultValue()) {
         // Show the default value of the parameter
         $default = Inline::dump($node->getDefaultValue());
         $question .= " [<comment>{$default}</comment>]";
     } else {
         $default = null;
     }
     // Show a user-friendly prompt
     $question .= ":\n > ";
     $value = $this->io->askAndValidate($question, function ($value) use($node) {
         $value = Inline::parse($value);
         // Make sure that there are no errors
         $node->finalize($value);
         return $value;
     }, null, $default);
     $this->io->write("");
     return $value;
 }