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<?php /* * $Id: PrefixLines.php 325 2007-12-20 15:44:58Z hans $ * * 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>. */ include_once 'phing/filters/BaseParamFilterReader.php'; include_once 'phing/filters/ChainableReader.php'; /** * Attaches a prefix to every line. * * Example: * <pre><prefixlines prefix="Foo"/></pre> * * Or: * * <pre><filterreader classname="phing.filters.PrefixLines"> * <param name="prefix" value="Foo"/> * </filterreader></pre> * * @author <a href="mailto:yl@seasonfive.com">Yannick Lecaillez</a> * @author hans lellelid, hans@velum.net * @version $Revision: 1.6 $ $Date: 2007-12-20 15:44:58 +0000 (Thu, 20 Dec 2007) $ * @access public * @see FilterReader * @package phing.filters */ class PrefixLines extends BaseParamFilterReader implements ChainableReader { /** * Parameter name for the prefix. * @var string */ const PREFIX_KEY = "lines"; /** * The prefix to be used. * @var string */ private $_prefix = null; /** * Adds a prefix to each line of input stream and returns resulting stream. * * @return mixed buffer, -1 on EOF */ function read($len = null) { if ( !$this->getInitialized() ) { $this->_initialize(); $this->setInitialized(true); } $buffer = $this->in->read($len); if ($buffer === -1) { return -1; } $lines = explode("\n", $buffer); $filtered = array(); foreach($lines as $line) { $line = $this->_prefix . $line; $filtered[] = $line; } $filtered_buffer = implode("\n", $filtered); return $filtered_buffer; } /** * Sets the prefix to add at the start of each input line. * * @param string $prefix The prefix to add at the start of each input line. * May be <code>null</code>, in which case no prefix * is added. */ function setPrefix($prefix) { $this->_prefix = (string) $prefix; } /** * Returns the prefix which will be added at the start of each input line. * * @return string The prefix which will be added at the start of each input line */ function getPrefix() { return $this->_prefix; } /** * Creates a new PrefixLines filter using the passed in * Reader for instantiation. * * @param object A Reader object providing the underlying stream. * Must not be <code>null</code>. * * @return object A new filter based on this configuration, but filtering * the specified reader */ function chain(Reader $reader) { $newFilter = new PrefixLines($reader); $newFilter->setPrefix($this->getPrefix()); $newFilter->setInitialized(true); $newFilter->setProject($this->getProject()); return $newFilter; } /** * Initializes the prefix if it is available from the parameters. */ private function _initialize() { $params = $this->getParameters(); if ( $params !== null ) { for($i = 0, $_i=count($params) ; $i < $_i ; $i++) { if ( self::PREFIX_KEY == $params[$i]->getName() ) { $this->_prefix = (string) $params[$i]->getValue(); break; } } } } }
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