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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * For the full copyright and license information, please view the LICENSE
   9   * file that was distributed with this source code.
  10   */
  11  
  12  namespace Symfony\Component\Config\Exception;
  13  
  14  /**
  15   * Exception class for when a resource cannot be loaded or imported.
  16   *
  17   * @author Ryan Weaver <ryan@thatsquality.com>
  18   */
  19  class FileLoaderLoadException extends \Exception
  20  {
  21      /**
  22       * @param string     $resource       The resource that could not be imported
  23       * @param string     $sourceResource The original resource importing the new resource
  24       * @param int        $code           The error code
  25       * @param \Exception $previous       A previous exception
  26       */
  27      public function __construct($resource, $sourceResource = null, $code = null, $previous = null)
  28      {
  29          $message = '';
  30          if ($previous) {
  31              // Include the previous exception, to help the user see what might be the underlying cause
  32  
  33              // Trim the trailing period of the previous message. We only want 1 period remove so no rtrim...
  34              if ('.' === substr($previous->getMessage(), -1)) {
  35                  $trimmedMessage = substr($previous->getMessage(), 0, -1);
  36                  $message .= sprintf('%s', $trimmedMessage).' in ';
  37              } else {
  38                  $message .= sprintf('%s', $previous->getMessage()).' in ';
  39              }
  40              $message .= $resource.' ';
  41  
  42              // show tweaked trace to complete the human readable sentence
  43              if (null === $sourceResource) {
  44                  $message .= sprintf('(which is loaded in resource "%s")', $this->varToString($resource));
  45              } else {
  46                  $message .= sprintf('(which is being imported from "%s")', $this->varToString($sourceResource));
  47              }
  48              $message .= '.';
  49  
  50          // if there's no previous message, present it the default way
  51          } elseif (null === $sourceResource) {
  52              $message .= sprintf('Cannot load resource "%s".', $this->varToString($resource));
  53          } else {
  54              $message .= sprintf('Cannot import resource "%s" from "%s".', $this->varToString($resource), $this->varToString($sourceResource));
  55          }
  56  
  57          // Is the resource located inside a bundle?
  58          if ('@' === $resource[0]) {
  59              $parts = explode(\DIRECTORY_SEPARATOR, $resource);
  60              $bundle = substr($parts[0], 1);
  61              $message .= sprintf(' Make sure the "%s" bundle is correctly registered and loaded in the application kernel class.', $bundle);
  62              $message .= sprintf(' If the bundle is registered, make sure the bundle path "%s" is not empty.', $resource);
  63          }
  64  
  65          parent::__construct($message, $code, $previous);
  66      }
  67  
  68      protected function varToString($var)
  69      {
  70          if (\is_object($var)) {
  71              return sprintf('Object(%s)', \get_class($var));
  72          }
  73  
  74          if (\is_array($var)) {
  75              $a = array();
  76              foreach ($var as $k => $v) {
  77                  $a[] = sprintf('%s => %s', $k, $this->varToString($v));
  78              }
  79  
  80              return sprintf('Array(%s)', implode(', ', $a));
  81          }
  82  
  83          if (\is_resource($var)) {
  84              return sprintf('Resource(%s)', get_resource_type($var));
  85          }
  86  
  87          if (null === $var) {
  88              return 'null';
  89          }
  90  
  91          if (false === $var) {
  92              return 'false';
  93          }
  94  
  95          if (true === $var) {
  96              return 'true';
  97          }
  98  
  99          return (string) $var;
 100      }
 101  }