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<?php
/**
* File containing the ezcBaseMetaData 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
*/
/**
* Base class implements ways of fetching information about the installed
* eZ Components. It knows whether to use the PEAR registry or the bundled XML
* file, depending on how eZ Components is installed.
*
* @package Base
* @version 1.8
* @mainclass
*/
class ezcBaseMetaData
{
/**
* Creates a ezcBaseMetaData object
*
* The sole parameter $installMethod should only be used if you are really
* sure that you need to use it. It is mostly there to make testing at
* least slightly possible. Again, do not set it unless instructed.
*
* @param string $installMethod
*/
public function __construct( $installMethod = NULL )
{
$installMethod = $installMethod !== NULL ? $installMethod : ezcBase::getInstallMethod();
// figure out which reader to use
switch ( $installMethod )
{
case 'tarball':
$this->reader = new ezcBaseMetaDataTarballReader;
break;
case 'pear':
$this->reader = new ezcBaseMetaDataPearReader;
break;
default:
throw new ezcBaseMetaDataReaderException( "Unknown install method '$installMethod'." );
break;
}
}
/**
* 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()
{
return $this->reader->getBundleVersion();
}
/**
* Returns a PHP version string that describes the required PHP version for
* this installed eZ Components bundle.
*
* @return string
*/
public function getRequiredPhpVersion()
{
return $this->reader->getRequiredPhpVersion();
}
/**
* Returns whether $componentName is installed
*
* If installed with PEAR, it checks the PEAR registry whether the
* component is there. In case the tarball installation method is used, it
* will return true for every component that exists (because all of them
* are then available).
*
* @return bool
*/
public function isComponentInstalled( $componentName )
{
return $this->reader->isComponentInstalled( $componentName );
}
/**
* Returns the version string of the available $componentName or false when
* the component is not installed.
*
* @return string
*/
public function getComponentVersion( $componentName )
{
return $this->reader->getComponentVersion( $componentName );
}
/**
* 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 = null )
{
if ( $componentName === null )
{
return $this->reader->getComponentDependencies();
}
else
{
return $this->reader->getComponentDependencies( $componentName );
}
}
}
?>