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<?php
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/*
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* $Id: AbstractHandler.php 123 2006-09-14 20:19:08Z mrook $
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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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include_once 'phing/parser/ExpatParseException.php';
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/**
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* This is an abstract class all SAX handler classes must extend
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*
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* @author Andreas Aderhold <andi@binarycloud.com>
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* @copyright © 2001,2002 THYRELL. All rights reserved
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* @version $Revision: 1.6 $
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* @package phing.parser
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*/
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abstract class AbstractHandler {
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public $parentHandler = null;
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public $parser = null;
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/**
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* Constructs a SAX handler parser.
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*
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* The constructor must be called by all derived classes.
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*
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* @param object the parser object
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* @param object the parent handler of this handler
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*/
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protected function __construct($parser, $parentHandler) {
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$this->parentHandler = $parentHandler;
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$this->parser = $parser;
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$this->parser->setHandler($this);
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}
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/**
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* Gets invoked when a XML open tag occurs
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*
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* Must be overloaded by the child class. Throws an ExpatParseException
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* if there is no handler registered for an element.
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*
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* @param string the name of the XML element
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* @param array the attributes of the XML element
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*/
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public function startElement($name, $attribs) {
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throw new ExpatParseException("Unexpected element $name");
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}
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/**
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* Gets invoked when element closes method.
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*
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*/
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protected function finished() {}
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/**
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* Gets invoked when a XML element ends.
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*
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* Can be overloaded by the child class. But should not. It hands
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* over control to the parentHandler of this.
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*
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* @param string the name of the XML element
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*/
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public function endElement($name) {
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$this->finished();
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$this->parser->setHandler($this->parentHandler);
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}
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/**
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* Invoked by occurance of #PCDATA.
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*
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* @param string the name of the XML element
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* @exception ExpatParserException if there is no CDATA but method
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* was called
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* @access public
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*/
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public function characters($data) {
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$s = trim($data);
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if (strlen($s) > 0) {
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throw new ExpatParseException("Unexpected text '$s'", $this->parser->getLocation());
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}
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}
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}
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