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<?php
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/*
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* $Id: NotCondition.php 43 2006-03-10 14:31:51Z mrook $
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information please see
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* <http://phing.info>.
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*/
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require_once 'phing/tasks/system/condition/ConditionBase.php';
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/**
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* <not> condition.
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*
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* Evaluates to true if the single condition nested into it is false
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* and vice versa.
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*
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* @author Andreas Aderhold <andi@binarycloud.com>
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* @copyright © 2001,2002 THYRELL. All rights reserved
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* @version $Revision: 1.6 $ $Date: 2006-03-10 15:31:51 +0100 (Fri, 10 Mar 2006) $
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* @access public
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* @package phing.tasks.system.condition
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*/
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class NotCondition extends ConditionBase implements Condition {
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function evaluate() {
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if ($this->countConditions() > 1) {
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throw new BuildException("You must not nest more than one condition into <not>");
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}
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if ($this->countConditions() < 1) {
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throw new BuildException("You must nest a condition into <not>");
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}
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$conds = $this->getIterator();
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return !$conds->current()->evaluate();
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}
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}
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