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<?php
/*
* $Id: MajoritySelector.php,v 1.6 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>.
*/
/**
* This selector is here just to shake up your thinking a bit. Don't get
* too caught up in boolean, there are other ways you can evaluate a
* collection of selectors. This one takes a vote of the selectors it
* contains, and majority wins. You could also have an "all-but-one"
* selector, a "weighted-average" selector, and so on. These are left
* as exercises for the reader (as are the usecases where this would
* be necessary).
*
* @author Hans Lellelid <hans@xmpl.org> (Phing)
* @author Bruce Atherton <bruce@callenish.com> (Ant)
* @package phing.types.selectors
*/
class MajoritySelector extends BaseSelectorContainer {
private $allowtie = true;
public function toString() {
$buf = "";
if ($this->hasSelectors()) {
$buf .= "{majorityselect: ";
$buf .= parent::toString();
$buf .= "}";
}
return $buf;
}
public function setAllowtie($tiebreaker) {
$this->allowtie = $tiebreaker;
}
/**
* Returns true (the file is selected) if most of the other selectors
* agree. In case of a tie, go by the allowtie setting. That defaults
* to true, meaning in case of a tie, the file is selected.
*
* @param basedir the base directory the scan is being done from
* @param filename is the name of the file to check
* @param file is a PhingFile object for the filename that the selector
* can use
* @return whether the file should be selected or not
*/
public function isSelected(PhingFile $basedir, $filename, PhingFile $file) {
$this->validate();
$yesvotes = 0;
$novotes = 0;
$selectors = $this->selectorElements();
for($i=0,$size=count($selectors); $i < $size; $i++) {
$result = $selectors[$i]->isSelected($basedir,$filename,$file);
if ($result) {
$yesvotes = $yesvotes + 1;
} else {
$novotes = $novotes + 1;
}
}
if ($yesvotes > $novotes) {
return true;
}
else if ($novotes > $yesvotes) {
return false;
}
// At this point, we know we have a tie.
return $this->allowtie;
}
}
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