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<?php
/*
* $Id: RegexpMapper.php,v 1.9 2004/03/15 17:11:15 hlellelid 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>.
*/
require_once 'phing/mappers/FileNameMapper.php';
include_once 'phing/util/StringHelper.php';
include_once 'phing/util/regexp/Regexp.php';
/**
* Uses regular expressions to perform filename transformations.
*
* @author Andreas Aderhold <andi@binarycloud.com>
* @author Hans Lellelid <hans@velum.net>
* @version $Revision: 1.9 $
* @package phing.mappers
*/
class RegexpMapper implements FileNameMapper {
/**
* @var string
*/
private $to;
/**
* The Regexp engine.
* @var Regexp
*/
private $reg;
function __construct() {
// instantiage regexp matcher here
$this->reg = new Regexp();
}
/**
* Sets the "from" pattern. Required.
*/
function setFrom($from) {
$this->reg->SetPattern($from);
}
/**
* Sets the "to" pattern. Required.
*/
function setTo($to) {
// [HL] I'm changing the way this works for now to just use string
//$this->to = StringHelper::toCharArray($to);
$this->to = $to;
}
function main($sourceFileName) {
if ($this->reg === null || $this->to === null || !$this->reg->matches((string) $sourceFileName)) {
return null;
}
return array($this->replaceReferences($sourceFileName));
}
/**
* Replace all backreferences in the to pattern with the matched groups.
* groups of the source.
* @param string $source The source filename.
*/
private function replaceReferences($source) {
// FIXME
// Can't we just use engine->replace() to handle this? the Preg engine
// will automatically convert \1 references to $1
// the expression has already been processed (when ->matches() was run in Main())
// so no need to pass $source again to the engine.
$groups = (array) $this->reg->getGroups();
// replace \1 with value of $groups[1] and return the modified "to" string
return preg_replace('/\\\([\d]+)/e', "\$groups[$1]", $this->to);
}
}
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