<?php
/**
 * PHPUnit
 *
 * Copyright (c) 2002-2008, Sebastian Bergmann <sb@sebastian-bergmann.de>.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   * Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 
 *   * Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in
 *     the documentation and/or other materials provided with the
 *     distribution.
 *
 *   * Neither the name of Sebastian Bergmann nor the names of his
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 *
 * @category   Testing
 * @package    PHPUnit
 * @author     Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @copyright  2002-2008 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/bsd-license.php  BSD License
 * @version    SVN: $Id: File.php 1985 2007-12-26 18:11:55Z sb $
 * @link       http://www.phpunit.de/
 * @since      File available since Release 3.2.0
 */

require_once 'PHPUnit/Util/Class.php';
require_once 'PHPUnit/Util/Metrics.php';
require_once 'PHPUnit/Util/Filter.php';

PHPUnit_Util_Filter::addFileToFilter(__FILE__, 'PHPUNIT');

/**
 * File-Level Metrics.
 *
 * @category   Testing
 * @package    PHPUnit
 * @author     Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @copyright  2002-2008 Sebastian Bergmann <sb@sebastian-bergmann.de>
 * @license    http://www.opensource.org/licenses/bsd-license.php  BSD License
 * @version    Release: 3.2.9
 * @link       http://www.phpunit.de/
 * @since      Class available since Release 3.2.0
 */
class PHPUnit_Util_Metrics_File extends PHPUnit_Util_Metrics {
  protected $coverage = 0;
  protected $loc = 0;
  protected $cloc = 0;
  protected $ncloc = 0;
  protected $locExecutable = 0;
  protected $locExecuted = 0;
  
  protected $filename;
  protected $classes = array();
  protected $functions = array();
  protected $lines = array();
  protected $tokens = array();
  
  protected static $cache = array();

  /**
   * Constructor.
   *
   * @param  string $filename
   * @param  array  $codeCoverage
   * @throws RuntimeException
   * @access protected
   */
  protected function __construct($filename, &$codeCoverage = array()) {
    if (! file_exists($filename)) {
      throw new RuntimeException(sprintf('File "%s" not found.', $filename));
    }
    
    $this->filename = $filename;
    $this->lines = file($filename);
    $this->tokens = token_get_all(file_get_contents($filename));
    
    $this->countLines();
    $this->setCoverage($codeCoverage);
    
    foreach (PHPUnit_Util_Class::getClassesInFile($filename) as $class) {
      $this->classes[$class->getName()] = PHPUnit_Util_Metrics_Class::factory($class, $codeCoverage);
    }
    
    foreach (PHPUnit_Util_Class::getFunctionsInFile($filename) as $function) {
      $this->functions[$function->getName()] = PHPUnit_Util_Metrics_Function::factory($function, $codeCoverage);
    }
  }

  /**
   * Factory.
   *
   * @param  string $filename
   * @param  array  $codeCoverage
   * @return PHPUnit_Util_Metrics_File
   * @access public
   * @static
   */
  public static function factory($filename, &$codeCoverage = array()) {
    if (! isset(self::$cache[$filename])) {
      self::$cache[$filename] = new PHPUnit_Util_Metrics_File($filename, $codeCoverage);
    } 

    else if (! empty($codeCoverage) && self::$cache[$filename]->getCoverage() == 0) {
      self::$cache[$filename]->setCoverage($codeCoverage);
    }
    
    return self::$cache[$filename];
  }

  /**
   * @param  array $codeCoverage
   * @access public
   */
  public function setCoverage(array &$codeCoverage) {
    if (! empty($codeCoverage)) {
      $this->calculateCodeCoverage($codeCoverage);
      
      foreach ($this->classes as $class) {
        $class->setCoverage($codeCoverage);
      }
      
      foreach ($this->functions as $function) {
        $function->setCoverage($codeCoverage);
      }
    }
  }

  /**
   * Returns the path to the file.
   *
   * @return string
   * @access public
   */
  public function getPath() {
    return $this->filename;
  }

  /**
   * Classes.
   *
   * @return array
   * @access public
   */
  public function getClasses() {
    return $this->classes;
  }

  /**
   * A class.
   *
   * @param  string $className
   * @return ReflectionClass
   * @access public
   */
  public function getClass($className) {
    return $this->classes[$className];
  }

  /**
   * Functions.
   *
   * @return array
   * @access public
   */
  public function getFunctions() {
    return $this->functions;
  }

  /**
   * A function.
   *
   * @param  string $functionName
   * @return ReflectionClass
   * @access public
   */
  public function getFunction($functionName) {
    return $this->functions[$functionName];
  }

  /**
   * Lines.
   *
   * @return array
   * @access public
   */
  public function getLines() {
    return $this->lines;
  }

  /**
   * Tokens.
   *
   * @return array
   * @access public
   */
  public function getTokens() {
    return $this->tokens;
  }

  /**
   * Returns the Code Coverage for the file.
   *
   * @return float
   * @access public
   */
  public function getCoverage() {
    return $this->coverage;
  }

  /**
   * Lines of Code (LOC).
   *
   * @return int
   * @access public
   */
  public function getLoc() {
    return $this->loc;
  }

  /**
   * Executable Lines of Code (ELOC).
   *
   * @return int
   * @access public
   */
  public function getLocExecutable() {
    return $this->locExecutable;
  }

  /**
   * Executed Lines of Code.
   *
   * @return int
   * @access public
   */
  public function getLocExecuted() {
    return $this->locExecuted;
  }

  /**
   * Comment Lines of Code (CLOC).
   *
   * @return int
   * @access public
   */
  public function getCloc() {
    return $this->cloc;
  }

  /**
   * Non-Comment Lines of Code (NCLOC).
   *
   * @return int
   * @access public
   */
  public function getNcloc() {
    return $this->ncloc;
  }

  /**
   * Calculates the Code Coverage for the class.
   *
   * @param  array $codeCoverage
   * @access protected
   */
  protected function calculateCodeCoverage(&$codeCoverage) {
    $statistics = PHPUnit_Util_CodeCoverage::getStatistics($codeCoverage, $this->filename, 1, count($this->lines));
    
    $this->coverage = $statistics['coverage'];
    $this->loc = $statistics['loc'];
    $this->locExecutable = $statistics['locExecutable'];
    $this->locExecuted = $statistics['locExecuted'];
  }

  /**
   * @access protected
   */
  protected function countLines() {
    $this->loc = count($this->lines);
    $this->cloc = 0;
    
    foreach ($this->tokens as $i => $token) {
      if (is_string($token)) {
        continue;
      }
      
      list($token, $value) = $token;
      
      if ($token == T_COMMENT || $token == T_DOC_COMMENT) {
        $this->cloc += count(explode("\n", $value));
      }
    }
    
    $this->ncloc = $this->loc - $this->cloc;
  }
}
?>
