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<?php
/*
* $Id: AbstractHandler.php,v 1.6 2004/02/27 18:16:10 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/parser/ExpatParseException.php';
/**
* This is an abstract class all SAX handler classes must extend
*
* @author Andreas Aderhold <andi@binarycloud.com>
* @copyright © 2001,2002 THYRELL. All rights reserved
* @version $Revision: 1.6 $
* @package phing.parser
*/
abstract class AbstractHandler {
public $parentHandler = null;
public $parser = null;
/**
* Constructs a SAX handler parser.
*
* The constructor must be called by all derived classes.
*
* @param object the parser object
* @param object the parent handler of this handler
*/
protected function __construct($parser, $parentHandler) {
$this->parentHandler = $parentHandler;
$this->parser = $parser;
$this->parser->setHandler($this);
}
/**
* Gets invoked when a XML open tag occurs
*
* Must be overloaded by the child class. Throws an ExpatParseException
* if there is no handler registered for an element.
*
* @param string the name of the XML element
* @param array the attributes of the XML element
*/
public function startElement($name, $attribs) {
throw new ExpatParseException("Unexpected element $name");
}
/**
* Gets invoked when element closes method.
*
*/
protected function finished() {}
/**
* Gets invoked when a XML element ends.
*
* Can be overloaded by the child class. But should not. It hands
* over control to the parentHandler of this.
*
* @param string the name of the XML element
*/
public function endElement($name) {
$this->finished();
$this->parser->setHandler($this->parentHandler);
}
/**
* Invoked by occurance of #PCDATA.
*
* @param string the name of the XML element
* @exception ExpatParserException if there is no CDATA but method
* was called
* @access public
*/
public function characters($data) {
$s = trim($data);
if (strlen($s) > 0) {
throw new ExpatParseException("Unexpected text '$s'", $this->parser->getLocation());
}
}
}
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