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<?php
/*
* $Id: StripLineBreaks.php,v 1.8 2004/03/15 14:45:06 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>.
*/
include_once 'phing/filters/BaseParamFilterReader.php';
include_once 'phing/filters/ChainableReader.php';
/**
* Filter to flatten the stream to a single line.
*
* Example:
*
* <pre><striplinebreaks/></pre>
*
* Or:
*
* <pre><filterreader classname="phing.filters.StripLineBreaks"/></pre>
*
* @author <a href="mailto:yl@seasonfive.com">Yannick Lecaillez</a>
* @author hans lellelid, hans@velum.net
* @version $Revision: 1.8 $ $Date: 2004/03/15 14:45:06 $
* @access public
* @see BaseParamFilterReader
* @package phing.filters
*/
class StripLineBreaks extends BaseParamFilterReader implements ChainableReader {
/**
* Default line-breaking characters.
* @var string
*/
const DEFAULT_LINE_BREAKS = "\r\n";
/**
* Parameter name for the line-breaking characters parameter.
* @var string
*/
const LINES_BREAKS_KEY = "linebreaks";
/**
* The characters that are recognized as line breaks.
* @var string
*/
private $_lineBreaks = "\r\n"; // self::DEFAULT_LINE_BREAKS;
/**
* Returns the filtered stream, only including
* characters not in the set of line-breaking characters.
*
* @return mixed the resulting stream, or -1
* if the end of the resulting stream has been reached.
*
* @exception IOException if the underlying stream throws an IOException
* during reading
*/
function read($len = null) {
if ( !$this->getInitialized() ) {
$this->_initialize();
$this->setInitialized(true);
}
$buffer = $this->in->read($len);
if($buffer === -1) {
return -1;
}
$buffer = preg_replace("/[".$this->_lineBreaks."]/", '', $buffer);
return $buffer;
}
/**
* Sets the line-breaking characters.
*
* @param string $lineBreaks A String containing all the characters to be
* considered as line-breaking.
*/
function setLineBreaks($lineBreaks) {
$this->_lineBreaks = (string) $lineBreaks;
}
/**
* Gets the line-breaking characters.
*
* @return string A String containing all the characters that are considered as line-breaking.
*/
function getLineBreaks() {
return $this->_lineBreaks;
}
/**
* Creates a new StripLineBreaks 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) {
$newFilter = new StripLineBreaks($reader);
$newFilter->setLineBreaks($this->getLineBreaks());
$newFilter->setInitialized(true);
$newFilter->setProject($this->getProject());
return $newFilter;
}
/**
* Parses the parameters to set the line-breaking characters.
*/
private function _initialize() {
$userDefinedLineBreaks = null;
$params = $this->getParameters();
if ( $params !== null ) {
for($i = 0 ; $i<count($params) ; $i++) {
if ( self::LINE_BREAKS_KEY === $params[$i]->getName() ) {
$userDefinedLineBreaks = $params[$i]->getValue();
break;
}
}
}
if ( $userDefinedLineBreaks !== null ) {
$this->_lineBreaks = $userDefinedLineBreaks;
}
}
}
?>
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