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   1  <?php
   2  /**
   3   * Zend Framework (http://framework.zend.com/)
   4   *
   5   * @link      http://github.com/zendframework/zf2 for the canonical source repository
   6   * @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
   7   * @license   http://framework.zend.com/license/new-bsd New BSD License
   8   */
   9  
  10  namespace Zend\Code\Scanner;
  11  
  12  use stdClass;
  13  use Zend\Code\Exception;
  14  
  15  /**
  16   * Shared utility methods used by scanners
  17   */
  18  class Util
  19  {
  20      /**
  21       * Resolve imports
  22       *
  23       * @param  string $value
  24       * @param  null|string $key
  25       * @param  \stdClass $data
  26       * @return void
  27       * @throws Exception\InvalidArgumentException
  28       */
  29      public static function resolveImports(&$value, $key = null, stdClass $data = null)
  30      {
  31          if (!is_object($data)
  32              || !property_exists($data, 'uses')
  33              || !property_exists($data, 'namespace')
  34          ) {
  35              throw new Exception\InvalidArgumentException(sprintf(
  36                  '%s expects a data object containing "uses" and "namespace" properties; on or both missing',
  37                  __METHOD__
  38              ));
  39          }
  40  
  41          if ($data->namespace && !$data->uses && strlen($value) > 0 && $value{0} != '\\') {
  42              $value = $data->namespace . '\\' . $value;
  43  
  44              return;
  45          }
  46  
  47          if (!$data->uses || strlen($value) <= 0 || $value{0} == '\\') {
  48              $value = ltrim($value, '\\');
  49  
  50              return;
  51          }
  52  
  53          if ($data->namespace || $data->uses) {
  54              $firstPart = $value;
  55              if (($firstPartEnd = strpos($firstPart, '\\')) !== false) {
  56                  $firstPart = substr($firstPart, 0, $firstPartEnd);
  57              } else {
  58                  $firstPartEnd = strlen($firstPart);
  59              }
  60  
  61              if (array_key_exists($firstPart, $data->uses)) {
  62                  $value = substr_replace($value, $data->uses[$firstPart], 0, $firstPartEnd);
  63  
  64                  return;
  65              }
  66  
  67              if ($data->namespace) {
  68                  $value = $data->namespace . '\\' . $value;
  69  
  70                  return;
  71              }
  72          }
  73      }
  74  }