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