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<?php |
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/* |
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* This file is part of the phpflo\phpflo-fbp package. |
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* |
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* (c) Marc Aschmann <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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namespace PhpFlo\Loader; |
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use PhpFlo\Common\DefinitionInterface; |
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use PhpFlo\Common\LoaderInterface; |
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use PhpFlo\Exception\LoaderException; |
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use PhpFlo\Fbp\FbpDefinition; |
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use PhpFlo\Fbp\FbpParser; |
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use Symfony\Component\Yaml\Yaml; |
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/** |
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* Class Loader |
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* |
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* @package PhpFlo\Loader |
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* @author Marc Aschmann <[email protected]> |
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*/ |
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final class Loader implements LoaderInterface |
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{ |
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private static $types = [ |
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'yml' => 'yaml', |
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'yaml' => 'yaml', |
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'json' => 'json', |
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'fbp' => 'fbp', |
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]; |
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/** |
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* @param string $file name/path of file to load |
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* @return DefinitionInterface |
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* @throws LoaderException |
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*/ |
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public static function load($file) |
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{ |
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$type = self::$types[self::checkType($file)]; |
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$content = self::loadFile($file); |
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if (empty($content)) { |
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throw new LoaderException("Loader::load(): no data found in file!"); |
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} |
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switch ($type) { |
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case 'fbp': |
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$loader = new FbpParser($content); |
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$definition = $loader->run(); |
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break; |
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case 'yaml': |
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$definition = new FbpDefinition( |
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Yaml::parse($content) |
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); |
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break; |
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case 'json': |
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$definition = new FbpDefinition( |
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json_decode($content, true) |
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); |
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break; |
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} |
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return $definition; |
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} |
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/** |
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* Check file if extension matches a loader. |
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* |
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* @param string $file |
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* @return string |
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*/ |
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private static function checkType($file) |
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{ |
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$parts = explode('.', $file); |
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$type = array_pop($parts); |
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if (!in_array($type, array_keys(self::$types))) { |
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throw new LoaderException("Loader::checkType(): Could not find parser for {$file}!"); |
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} |
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return $type; |
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} |
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/** |
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* @param string $file |
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* @return string |
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*/ |
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private static function loadFile($file) |
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{ |
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if (file_exists($file) && is_readable($file)) { |
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$content = file_get_contents($file); |
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} else { |
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throw new LoaderException( |
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"Loader::loadFile(): {$file} does not exist!" |
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); |
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} |
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return $content; |
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} |
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} |
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phpflo /
phpflo-fbp
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: