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Common.php
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Editing: Common.php
<?php /** * PEAR_Task_Common, base class for installer tasks * * PHP versions 4 and 5 * * @category pear * @package PEAR * @author Greg Beaver <cellog@php.net> * @copyright 1997-2009 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 1.4.0a1 */ /**#@+ * Error codes for task validation routines */ define('PEAR_TASK_ERROR_NOATTRIBS', 1); define('PEAR_TASK_ERROR_MISSING_ATTRIB', 2); define('PEAR_TASK_ERROR_WRONG_ATTRIB_VALUE', 3); define('PEAR_TASK_ERROR_INVALID', 4); /**#@-*/ define('PEAR_TASK_PACKAGE', 1); define('PEAR_TASK_INSTALL', 2); define('PEAR_TASK_PACKAGEANDINSTALL', 3); /** * A task is an operation that manipulates the contents of a file. * * Simple tasks operate on 1 file. Multiple tasks are executed after all files have been * processed and installed, and are designed to operate on all files containing the task. * The Post-install script task simply takes advantage of the fact that it will be run * after installation, replace is a simple task. * * Combining tasks is possible, but ordering is significant. * * <file name="test.php" role="php"> * <tasks:replace from="@data-dir@" to="data_dir" type="pear-config"/> * <tasks:postinstallscript/> * </file> * * This will first replace any instance of @data-dir@ in the test.php file * with the path to the current data directory. Then, it will include the * test.php file and run the script it contains to configure the package post-installation. * * @category pear * @package PEAR * @author Greg Beaver <cellog@php.net> * @copyright 1997-2009 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 1.4.0a1 * @abstract */ class PEAR_Task_Common { /** * Valid types for this version are 'simple' and 'multiple' * * - simple tasks operate on the contents of a file and write out changes to disk * - multiple tasks operate on the contents of many files and write out the * changes directly to disk * * Child task classes must override this property. * * @access protected */ protected $type = 'simple'; /** * Determines which install phase this task is executed under */ public $phase = PEAR_TASK_INSTALL; /** * @access protected */ protected $config; /** * @access protected */ protected $registry; /** * @access protected */ public $logger; /** * @access protected */ protected $installphase; /** * @param PEAR_Config * @param PEAR_Common */ function __construct(&$config, &$logger, $phase) { $this->config = &$config; $this->registry = &$config->getRegistry(); $this->logger = &$logger; $this->installphase = $phase; if ($this->type == 'multiple') { $GLOBALS['_PEAR_TASK_POSTINSTANCES'][get_class($this)][] = &$this; } } /** * Validate the basic contents of a task tag. * * @param PEAR_PackageFile_v2 * @param array * @param PEAR_Config * @param array the entire parsed <file> tag * * @return true|array On error, return an array in format: * array(PEAR_TASK_ERROR_???[, param1][, param2][, ...]) * * For PEAR_TASK_ERROR_MISSING_ATTRIB, pass the attribute name in * For PEAR_TASK_ERROR_WRONG_ATTRIB_VALUE, pass the attribute name and * an array of legal values in * * @abstract */ public static function validateXml($pkg, $xml, $config, $fileXml) { } /** * Initialize a task instance with the parameters * * @param array raw, parsed xml * @param array attributes from the <file> tag containing this task * @param string|null last installed version of this package * @abstract */ public function init($xml, $fileAttributes, $lastVersion) { } /** * Begin a task processing session. All multiple tasks will be processed * after each file has been successfully installed, all simple tasks should * perform their task here and return any errors using the custom * throwError() method to allow forward compatibility * * This method MUST NOT write out any changes to disk * * @param PEAR_PackageFile_v2 * @param string file contents * @param string the eventual final file location (informational only) * @return string|false|PEAR_Error false to skip this file, PEAR_Error to fail * (use $this->throwError), otherwise return the new contents * @abstract */ public function startSession($pkg, $contents, $dest) { } /** * This method is used to process each of the tasks for a particular * multiple class type. Simple tasks need not implement this method. * * @param array an array of tasks * @access protected */ public static function run($tasks) { } /** * @final */ public static function hasPostinstallTasks() { return isset($GLOBALS['_PEAR_TASK_POSTINSTANCES']); } /** * @final */ public static function runPostinstallTasks() { foreach ($GLOBALS['_PEAR_TASK_POSTINSTANCES'] as $class => $tasks) { $err = call_user_func( array($class, 'run'), $GLOBALS['_PEAR_TASK_POSTINSTANCES'][$class] ); if ($err) { return PEAR_Task_Common::throwError($err); } } unset($GLOBALS['_PEAR_TASK_POSTINSTANCES']); } /** * Determines whether a role is a script * @return bool */ public function isScript() { return $this->type == 'script'; } public function throwError($msg, $code = -1) { include_once 'PEAR.php'; return PEAR::raiseError($msg, $code); } }
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