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/**
* @package pake
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @copyright 2004-2005 Fabien Potencier <fabien.potencier@symfony-project.com>
* @license see the LICENSE file included in the distribution
* @version SVN: $Id: pakeTask.class.php 4358 2007-06-25 10:04:03Z fabien $
*/
/**
*
* .
*
* .
*
* @package pake
* @author Fabien Potencier <fabien.potencier@symfony-project.com>
* @copyright 2004-2005 Fabien Potencier <fabien.potencier@symfony-project.com>
* @license see the LICENSE file included in the distribution
* @version SVN: $Id: pakeTask.class.php 4358 2007-06-25 10:04:03Z fabien $
*/
class pakeTask
{
protected static $TASKS = array();
protected static $ALIAS = array();
protected static $last_comment = '';
protected $prerequisites = array();
protected $name = '';
protected $comment = '';
protected $already_invoked = false;
protected $trace = null;
protected $verbose = null;
protected $dryrun = null;
protected $alias = '';
public function __construct($task_name)
{
$this->name = $task_name;
$this->comment = '';
$this->prerequisites = array();
$this->already_invoked = false;
$pake = pakeApp::get_instance();
$this->trace = $pake->get_trace();
$this->dryrun = $pake->get_dryrun();
$this->verbose = $pake->get_verbose();
}
public function is_verbose()
{
return $this->verbose;
}
public function enhance($deps = null)
{
if (!$deps) return;
if (is_array($deps))
{
$this->prerequisites = array_merge($this->prerequisites, $deps);
}
else
{
$this->prerequisites[] = $deps;
}
}
public static function get_tasks()
{
$tasks = pakeTask::$TASKS;
// we merge tasks and aliases
foreach (pakeTask::$ALIAS as $alias => $name)
{
if (!array_key_exists($name, $tasks))
{
throw new pakeException(sprintf('Task "%s" cannot be cloned to "%s" because it does not exist.', $name, $alias));
}
$alias_task = clone $tasks[$name];
$alias_task->alias = $name;
$alias_task->name = $alias;
$tasks[$alias] = $alias_task;
}
return $tasks;
}
public function get_property($name, $section = null)
{
$properties = pakeApp::get_instance()->get_properties();
if ($section)
{
if (!array_key_exists($section, $properties) || !array_key_exists($name, $properties[$section]))
{
throw new pakeException(sprintf('Property "%s/%s" does not exist.', $section, $name));
}
else
{
return $properties[$section][$name];
}
}
else
{
if (!array_key_exists($name, $properties))
{
throw new pakeException(sprintf('Property "%s" does not exist.', $name));
}
else
{
return $properties[$name];
}
}
}
public function get_alias()
{
return $this->alias;
}
public function get_prerequisites()
{
return $this->prerequisites;
}
public function get_name()
{
return $this->name;
}
public function get_comment()
{
return $this->comment;
}
// Format the trace flags for display.
private function format_trace_flags()
{
$flags = array();
if (!$this->already_invoked)
{
$flags[] = 'first_time';
}
if (!$this->is_needed())
{
$flags[] = 'not_needed';
}
return (count($flags)) ? '('.join(', ', $flags).')' : '';
}
public function invoke($args, $options)
{
if ($this->trace)
{
pake_echo_action('invoke', $this->name.' '.$this->format_trace_flags());
}
// return if already invoked
if ($this->already_invoked) return;
$this->already_invoked = true;
// run prerequisites
$tasks = self::get_tasks();
foreach ($this->prerequisites as $prerequisite)
{
$real_prerequisite = self::get_full_task_name($prerequisite);
if (array_key_exists($real_prerequisite, $tasks))
{
$tasks[$real_prerequisite]->invoke($args, $options);
}
else
{
throw new pakeException(sprintf('Prerequisite "%s" does not exist.', $prerequisite));
}
}
// only run if needed
if ($this->is_needed())
{
return $this->execute($args, $options);
}
}
public function execute($args, $options)
{
if ($this->dryrun)
{
pake_echo_action('execute', '(dry run) '.$this->name);
return;
}
if ($this->trace)
{
pake_echo_action('execute', $this->name);
}
// action to run
$function = ($this->get_alias() ? $this->get_alias() : $this->get_name());
if ($pos = strpos($function, '::'))
{
$function = array(substr($function, 0, $pos), preg_replace('/\-/', '_', 'run_'.strtolower(substr($function, $pos + 2))));
if (!is_callable($function))
{
throw new pakeException(sprintf('Task "%s" is defined but with no action defined.', $function[1]));
}
}
else
{
$function = preg_replace('/\-/', '_', 'run_'.strtolower($function));
if (!function_exists($function))
{
throw new pakeException(sprintf('Task "%s" is defined but with no action defined.', $this->name));
}
}
// execute action
return call_user_func_array($function, array($this, $args, $options));
}
public function is_needed()
{
return true;
}
public function timestamp()
{
$max = 0;
foreach ($this->prerequisites as $prerequisite)
{
$t = pakeTask::get($prerequisite)->timestamp();
if ($t > $max) $max = $t;
}
return ($max ? $max : time());
}
public static function define_task($name, $deps = null)
{
$task = pakeTask::lookup($name, 'pakeTask');
$task->add_comment();
$task->enhance($deps);
}
public static function define_alias($alias, $name)
{
self::$ALIAS[$alias] = $name;
}
public static function lookup($task_name, $class = 'pakeTask')
{
$tasks = self::get_tasks();
$task_name = self::get_full_task_name($task_name);
if (!array_key_exists($task_name, $tasks))
{
pakeTask::$TASKS[$task_name] = new $class($task_name);
}
return pakeTask::$TASKS[$task_name];
}
public static function get($task_name)
{
$tasks = self::get_tasks();
$task_name = self::get_full_task_name($task_name);
if (!array_key_exists($task_name, $tasks))
{
throw new pakeException(sprintf('Task "%s" is not defined.', $task_name));
}
return $tasks[$task_name];
}
public static function get_full_task_name($task_name)
{
foreach (self::get_tasks() as $task)
{
$mini_task_name = self::get_mini_task_name($task->get_name());
if ($mini_task_name == $task_name)
{
return $task->get_name();
}
}
return $task_name;
}
public static function get_mini_task_name($task_name)
{
$is_method_task = strpos($task_name, '::');
return ($is_method_task ? substr($task_name, $is_method_task + 2) : $task_name);
}
public static function define_comment($comment)
{
pakeTask::$last_comment = $comment;
}
public function add_comment()
{
if (!pakeTask::$last_comment) return;
if ($this->comment)
{
$this->comment .= ' / ';
}
$this->comment .= pakeTask::$last_comment;
pakeTask::$last_comment = '';
}
}
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