git.stricted.de - GitHub/WoltLab/WCF.git/blob

   1 <?php
   2
   3 namespace PhpDocReader\PhpParser;
   4
   5 use SplFileObject;
   6
   7 /**
   8  * Parses a file for "use" declarations.
   9  *
  10  * Class taken and adapted from doctrine/annotations to avoid pulling the whole package.
  11  *
  12  * @author Fabien Potencier <fabien@symfony.com>
  13  * @author Christian Kaps <christian.kaps@mohiva.com>
  14  */
  15 class UseStatementParser
  16 {
  17     /**
  18      * @return array A list with use statements in the form (Alias => FQN).
  19      */
  20     public function parseUseStatements(\ReflectionClass $class)
  21     {
  22         if (false === $filename = $class->getFilename()) {
  23             return array();
  24         }
  25
  26         $content = $this->getFileContent($filename, $class->getStartLine());
  27
  28         if (null === $content) {
  29             return array();
  30         }
  31
  32         $namespace = preg_quote($class->getNamespaceName());
  33         $content = preg_replace('/^.*?(\bnamespace\s+' . $namespace . '\s*[;{].*)$/s', '\\1', $content);
  34         $tokenizer = new TokenParser('<?php ' . $content);
  35
  36         $statements = $tokenizer->parseUseStatements($class->getNamespaceName());
  37
  38         return $statements;
  39     }
  40
  41     /**
  42      * Gets the content of the file right up to the given line number.
  43      *
  44      * @param string  $filename   The name of the file to load.
  45      * @param integer $lineNumber The number of lines to read from file.
  46      *
  47      * @return string The content of the file.
  48      */
  49     private function getFileContent($filename, $lineNumber)
  50     {
  51         if ( ! is_file($filename)) {
  52             return null;
  53         }
  54
  55         $content = '';
  56         $lineCnt = 0;
  57         $file = new SplFileObject($filename);
  58         while (!$file->eof()) {
  59             if ($lineCnt++ == $lineNumber) {
  60                 break;
  61             }
  62
  63             $content .= $file->fgets();
  64         }
  65
  66         return $content;
  67     }
  68 }