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   1  <?php
   2  /*
   3   *  $Id: IsSetCondition.php 3076 2006-12-18 08:52:12Z fabien $
   4   *
   5   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   6   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   7   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   8   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   9   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  10   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  11   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  12   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  13   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  14   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  15   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  16   *
  17   * This software consists of voluntary contributions made by many individuals
  18   * and is licensed under the LGPL. For more information please see
  19   * <http://phing.info>.
  20   */
  21  
  22  require_once 'phing/ProjectComponent.php';
  23  require_once 'phing/tasks/system/condition/Condition.php';
  24  
  25  /**
  26   * Condition that tests whether a given property has been set.
  27   *
  28   * @author Hans Lellelid <hans@xmpl.org> (Phing)
  29   * @author Stefan Bodewig <stefan.bodewig@epost.de> (Ant)
  30   * @version $Revision: 1.4 $
  31   * @package phing.tasks.system.condition
  32   */
  33  class IsSetCondition extends ProjectComponent implements Condition {
  34      
  35      private $property;
  36  
  37      public function setProperty($p) {
  38          $this->property = $p;
  39      }
  40  
  41      /**
  42       * Check whether property is set.
  43       * @throws BuildException
  44       */
  45      public function evaluate()  {
  46          if ($this->property === null) {
  47              throw new BuildException("No property specified for isset "
  48                                       . "condition");
  49          }        
  50          return $this->project->getProperty($this->property) !== null;
  51      }
  52  
  53  }