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<?php
/*
* $Id: ExtendSelector.php,v 1.10 2005/05/26 13:10:53 mrook Exp $
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information please see
* <http://phing.info>.
*/
include_once 'phing/util/StringHelper.php';
/**
* Selector that selects files by forwarding the request on to other classes.
*
* TODO:
* Consider adding Path (org.apache.tools.ant.types.Path) support to this class
* and to the Mappers class. See Ant versions for implimentation details.
*
* @author <a href="mailto:bruce@callenish.com">Bruce Atherton</a>
* @package phing.types.selectors
*/
class ExtendSelector extends BaseSelector {
private $classname;
private $dynselector;
private $parameters = array();
/**
* Sets the classname of the custom selector.
*
* @param classname is the class which implements this selector
*/
public function setClassname($classname) {
$this->classname = $classname;
}
/**
* Instantiates the identified custom selector class.
*/
public function selectorCreate() {
if ($this->classname !== null && $this->classname !== "") {
try {
// assume it's fully qualified, import it
$cls = Phing::import($this->classname);
// make sure class exists
if (class_exists($cls)) {
$this->dynselector = new $cls();
} else {
$this->setError("Selector " . $this->classname . " not initialized, no such class");
}
} catch (Exception $e) {
$this->setError("Selector " . $this->classname . " not initialized, could not create class: " . $e->getMessage());
}
} else {
$this->setError("There is no classname specified");
}
}
/**
* Create new parameters to pass to custom selector.
*
* @param p The new Parameter object
*/
public function addParam(Parameter $p) {
$this->parameters[] = $p;
}
/**
* These are errors specific to ExtendSelector only. If there are
* errors in the custom selector, it should throw a BuildException
* when isSelected() is called.
*/
public function verifySettings() {
// Creation is done here rather than in isSelected() because some
// containers may do a validation pass before running isSelected(),
// but we need to check for the existence of the created class.
if ($this->dynselector === null) {
$this->selectorCreate();
}
if (empty($this->classname)) {
$this->setError("The classname attribute is required");
} elseif ($this->dynselector === null) {
$this->setError("Internal Error: The custom selector was not created");
} elseif ( !($this->dynselector instanceof ExtendFileSelector) && (count($this->parameters) > 0)) {
$this->setError("Cannot set parameters on custom selector that does not "
. "implement ExtendFileSelector.");
}
}
/**
* Allows the custom selector to choose whether to select a file. This
* is also where the Parameters are passed to the custom selector,
* since we know we must have them all by now. And since we must know
* both classpath and classname, creating the class is deferred to here
* as well.
*
* @throws BuildException
*/
public function isSelected(PhingFile $basedir, $filename, PhingFile $file) {
$this->validate();
if (count($this->parameters) > 0 && $this->dynselector instanceof ExtendFileSelector) {
// We know that dynselector must be non-null if no error message
$this->dynselector->setParameters($this->parameters);
}
return $this->dynselector->isSelected($basedir, $filename, $file);
}
}
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