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<?php
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/*
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* $Id: RegexpMapper.php 123 2006-09-14 20:19:08Z 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/mappers/FileNameMapper.php';
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include_once 'phing/util/StringHelper.php';
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include_once 'phing/util/regexp/Regexp.php';
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/**
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* Uses regular expressions to perform filename transformations.
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*
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* @author Andreas Aderhold <andi@binarycloud.com>
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* @author Hans Lellelid <hans@velum.net>
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* @version $Revision: 1.9 $
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* @package phing.mappers
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*/
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class RegexpMapper implements FileNameMapper {
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/**
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* @var string
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*/
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private $to;
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/**
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* The Regexp engine.
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* @var Regexp
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*/
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private $reg;
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function __construct() {
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// instantiage regexp matcher here
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$this->reg = new Regexp();
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}
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/**
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* Sets the "from" pattern. Required.
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*/
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function setFrom($from) {
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$this->reg->SetPattern($from);
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}
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/**
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* Sets the "to" pattern. Required.
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*/
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function setTo($to) {
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// [HL] I'm changing the way this works for now to just use string
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//$this->to = StringHelper::toCharArray($to);
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$this->to = $to;
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}
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function main($sourceFileName) {
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if ($this->reg === null || $this->to === null || !$this->reg->matches((string) $sourceFileName)) {
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return null;
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}
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return array($this->replaceReferences($sourceFileName));
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}
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/**
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* Replace all backreferences in the to pattern with the matched groups.
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* groups of the source.
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* @param string $source The source filename.
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*/
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private function replaceReferences($source) {
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// FIXME
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// Can't we just use engine->replace() to handle this? the Preg engine
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// will automatically convert \1 references to $1
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// the expression has already been processed (when ->matches() was run in Main())
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// so no need to pass $source again to the engine.
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$groups = (array) $this->reg->getGroups();
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// replace \1 with value of $groups[1] and return the modified "to" string
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return preg_replace('/\\\([\d]+)/e', "\$groups[$1]", $this->to);
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}
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}
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