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<?php
/**
* File containing the ezcBaseMetaDataPearReader class.
*
* @package Base
* @version 1.8
* @copyright Copyright (C) 2005-2009 eZ Systems AS. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
*/
@require 'PEAR/Registry.php';
/**
* Base class implements ways of fetching information about the installed
* eZ Components when installed as tarball.
*
* Note: there are lots of @ used here, because PEAR still lives in the stone
* age with their PHP 3 code and general liberal use of throwing warnings and
* notices.
*
* @package Base
* @version 1.8
* @mainclass
*/
class ezcBaseMetaDataPearReader
{
/**
* Stores the PEAR_Registry to query for information
*
* @var PEAR_Registry
*/
private $registry;
/**
* Creates the reader object and initialized the registry for querying
*/
public function __construct()
{
@$this->registry = new PEAR_Registry;
}
/**
* Returns the version string for the installed eZ Components bundle.
*
* A version string such as "2008.2.2" is returned.
*
* @return string
*/
public function getBundleVersion()
{
@$packageInfo = $this->registry->packageInfo( 'ezcomponents', null, 'components.ez.no' );
return $packageInfo['version']['release'];
}
/**
* Returns a PHP version string that describes the required PHP version for
* this installed eZ Components bundle.
*
* @return string
*/
public function getRequiredPhpVersion()
{
@$packageInfo = $this->registry->packageInfo( 'ezcomponents', null, 'components.ez.no' );
if ( array_key_exists( 'required', $packageInfo['dependencies'] ) )
{
return $packageInfo['dependencies']['required']['php']['min'];
}
return $packageInfo['dependencies']['php']['min'];
}
/**
* Returns whether $componentName is installed
*
* Checks the PEAR registry whether the component is there.
*
* @return bool
*/
public function isComponentInstalled( $componentName )
{
@$packageInfo = $this->registry->packageInfo( $componentName, null, 'components.ez.no' );
return is_array( $packageInfo );
}
/**
* Returns the version string of the available $componentName or false when
* the component is not installed.
*
* @return string
*/
public function getComponentVersion( $componentName )
{
@$packageInfo = $this->registry->packageInfo( $componentName, null, 'components.ez.no' );
$release = $packageInfo['version']['release'];
return $release === null ? false : $release;
}
/**
* Returns a list of components that $componentName depends on.
*
* If $componentName is left empty, all installed components are returned.
*
* The returned array has as keys the component names, and as values the
* version of the components.
*
* @return array(string=>string).
*/
public function getComponentDependencies( $componentName = 'ezcomponents' )
{
@$packageInfo = $this->registry->packageInfo( $componentName, 'dependencies', 'components.ez.no' );
if ( isset( $packageInfo['required']['package'] ) )
{
$deps = array();
if ( isset( $packageInfo['required']['package']['name'] ) )
{
$deps[$packageInfo['required']['package']['name']] = $packageInfo['required']['package']['min'];
}
else
{
foreach ( $packageInfo['required']['package'] as $package )
{
$deps[$package['name']] = $package['min'];
}
}
return $deps;
}
return array();
}
}
?>