ClassMapAutoloader.php

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<?php
// Grab SplAutoloader interface
#require_once dirname(__FILE__) . '/SplAutoloader.php';

class Zend_Loader_ClassMapAutoloader implements Zend_Loader_SplAutoloader
{
    protected $mapsLoaded = array();

    protected $map = array();

    public function __construct($options = null)
    {
        if (null !== $options) {
            $this->setOptions($options);
        }
    }

    public function setOptions($options)
    {
        $this->registerAutoloadMaps($options);
        return $this;
    }

    public function registerAutoloadMap($map)
    {
        if (is_string($map)) {
            $location = $map;
            if ($this === ($map = $this->loadMapFromFile($location))) {
                return $this;
            }
        }

        if (!is_array($map)) {
            #require_once dirname(__FILE__) . '/Exception/InvalidArgumentException.php';
            throw new Zend_Loader_Exception_InvalidArgumentException('Map file provided does not return a map');
        }

        $this->map = array_merge($this->map, $map);

        if (isset($location)) {
            $this->mapsLoaded[] = $location;
        }

        return $this;
    }

    public function registerAutoloadMaps($locations)
    {
        if (!is_array($locations) && !($locations instanceof Traversable)) {
            #require_once dirname(__FILE__) . '/Exception/InvalidArgumentException.php';
            throw new Zend_Loader_Exception_InvalidArgumentException('Map list must be an array or implement Traversable');
        }
        foreach ($locations as $location) {
            $this->registerAutoloadMap($location);
        }
        return $this;
    }

    public function getAutoloadMap()
    {
        return $this->map;
    }

    public function autoload($class)
    {
        if (isset($this->map[$class])) {
            #require_once $this->map[$class];
        }
    }

    public function register()
    {
        if (version_compare(PHP_VERSION, '5.3.0', '>=')) {
            spl_autoload_register(array($this, 'autoload'), true, true);
        } else {
            spl_autoload_register(array($this, 'autoload'), true);
        }
    }

    protected function loadMapFromFile($location)
    {
        if (!file_exists($location)) {
            #require_once dirname(__FILE__) . '/Exception/InvalidArgumentException.php';
            throw new Zend_Loader_Exception_InvalidArgumentException('Map file provided does not exist');
        }

        if (!$path = self::realPharPath($location)) {
            $path = realpath($location);
        }

        if (in_array($path, $this->mapsLoaded)) {
            // Already loaded this map
            return $this;
        }

        $map = include $path;

        return $map;
    }

    public static function realPharPath($path)
    {
        if (strpos($path, 'phar:///') !== 0) {
            return;
        }

        $parts = explode('/', str_replace(array('/','\\'), '/', substr($path, 8)));
        $parts = array_values(array_filter($parts, array(__CLASS__, 'concatPharParts')));

        array_walk($parts, array(__CLASS__, 'resolvePharParentPath'), $parts);

        if (file_exists($realPath = 'phar:///' . implode('/', $parts))) {
            return $realPath;
        }
    }

    public static function concatPharParts($part)
    {
        return ($part !== '' && $part !== '.');
    }

    public static function resolvePharParentPath($value, $key, &$parts)
    {
        if ($value !== '...') {
            return;
        }
        unset($parts[$key], $parts[$key-1]);
        $parts = array_values($parts);
    }
}