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<?php /* * $Id: TabToSpaces.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>. */ require_once 'phing/filters/BaseParamFilterReader.php'; require_once 'phing/filters/ChainableReader.php'; /** * Converts tabs to spaces. * * Example: * * <pre><tabtospaces tablength="8"></pre> * * Or: * * <pre><filterreader classname="phing.filters.TabsToSpaces"> * <param name="tablength" value="8"> * </filterreader></pre> * * @author Yannick Lecaillez <yl@seasonfive.com> * @author Hans Lellelid <hans@xmpl.org> * @version $Revision: 1.9 $ * @see BaseParamFilterReader * @package phing.filters */ class TabToSpaces extends BaseParamFilterReader implements ChainableReader { /** * The default tab length. * @var int */ const DEFAULT_TAB_LENGTH = 8; /** * Parameter name for the length of a tab. * @var string */ const TAB_LENGTH_KEY = "tablength"; /** * Tab length in this filter. * @var int */ private $tabLength = 8; //self::DEFAULT_TAB_LENGTH; /** * Returns stream after converting tabs to the specified number of spaces. * * @return the resulting stream, or -1 * if the end of the resulting stream has been reached * * @exception IOException if the underlying stream throws an IOException * during reading */ function read($len = null) { if ( !$this->getInitialized() ) { $this->_initialize(); $this->setInitialized(true); } $buffer = $this->in->read($len); if($buffer === -1) { return -1; } $buffer = str_replace("\t", str_repeat(' ', $this->tabLength), $buffer); return $buffer; } /** * Sets the tab length. * * @param int $tabLength The number of spaces to be used when converting a tab. */ function setTablength($tabLength) { $this->tabLength = (int) $tabLength; } /** * Returns the tab length. * * @return int The number of spaces used when converting a tab */ function getTablength() { return $this->tabLength; } /** * Creates a new TabsToSpaces using the passed in * Reader for instantiation. * * @param Reader $reader A Reader object providing the underlying stream. * Must not be <code>null</code>. * * @return Reader A new filter based on this configuration, but filtering * the specified reader */ function chain(Reader $reader) { $newFilter = new TabToSpaces($reader); $newFilter->setTablength($this->getTablength()); $newFilter->setInitialized(true); $newFilter->setProject($this->getProject()); return $newFilter; } /** * Parses the parameters to set the tab length. */ private function _initialize() { $params = $this->getParameters(); if ( $params !== null ) { for($i = 0 ; $i<count($params) ; $i++) { if (self::TAB_LENGTH_KEY === $params[$i]->getName()) { $this->tabLength = $params[$i]->getValue(); break; } } } } }
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