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<?php
/*
* $Id: 744d8766d5aba397c0a8efd61afb8e60bd77b0c3 $
*
* 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 $Id$
* @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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