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<?php
/**
 * PEAR_Installer_Role_Cfg
 *
 * PHP versions 4 and 5
 *
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  2007-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @link       http://pear.php.net/package/PEAR
 * @since      File available since Release 1.7.0
 */

/**
 * @category   pear
 * @package    PEAR
 * @author     Greg Beaver <cellog@php.net>
 * @copyright  2007-2009 The Authors
 * @license    http://opensource.org/licenses/bsd-license.php New BSD License
 * @version    Release: 1.10.16
 * @link       http://pear.php.net/package/PEAR
 * @since      Class available since Release 1.7.0
 */
class PEAR_Installer_Role_Cfg extends PEAR_Installer_Role_Common
{
    /**
     * @var PEAR_Installer
     */
    var $installer;

/**
     * the md5 of the original file
     *
     * @var unknown_type
     */
    var $md5 = null;

/**
     * Do any unusual setup here
     * @param PEAR_Installer
     * @param PEAR_PackageFile_v2
     * @param array file attributes
     * @param string file name
     */
    function setup(&$installer, $pkg, $atts, $file)
    {
        $this->installer = &$installer;
        $reg = &$this->installer->config->getRegistry();
        $package = $reg->getPackage($pkg->getPackage(), $pkg->getChannel());
        if ($package) {
            $filelist = $package->getFilelist();
            if (isset($filelist[$file]) && isset($filelist[$file]['md5sum'])) {
                $this->md5 = $filelist[$file]['md5sum'];
            }
        }
    }

$temp_file = $newloc . DIRECTORY_SEPARATOR . uniqid('savefile');
                if (!@copy($old, $temp_file)) {
                    PEAR::popErrorHandling();
                    return PEAR::raiseError('Could not save existing configuration file '.
                        $old . ', unable to install.  Please set temp_dir ' .
                        'configuration variable to a writeable location and try again');
                }

PEAR::popErrorHandling();
                $this->installer->log(0, "WARNING: configuration file $old is being installed as $test[2], you should manually merge in changes to the existing configuration file");
                $this->installer->addFileOperation('rename', array($temp_file, $old, false));
                $this->installer->addFileOperation('delete', array($temp_file));
            }
        }

return $test;
    }
}