/usr/share/php/XML/DTD/XmlParser.php is in php-xml-dtd 0.5.2+dfsg1-3.
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
/**
* XML_DTD_XmlParser
*
* Extracts the skeleton of a XML file by chaining its elements.
*
* PHP versions 4 and 5
*
* LICENSE:
*
* Copyright (c) 2008-2009 Igor Feghali
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* 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.
*
* @category XML
* @package XML_DTD
* @author Igor Feghali <ifeghali@php.net>
* @copyright 2008-2009 Igor Feghali
* @license http://opensource.org/licenses/bsd-license New BSD License
* @version CVS: $Id: XmlParser.php,v 1.3 2009/04/28 02:01:29 ifeghali Exp $
* @link http://pear.php.net/package/XML_DTD
*/
/**
* @uses XML_Parser
*/
require_once 'XML/Parser.php';
/**
* XML_DTD_XmlParser
*
* Usage:
*
* <code>
* $nodes =& XML_DTD_XmlParser::factory('file.xml');
* if (PEAR::isError($nodes)) {
* die($nodes->getMessage());
* }
* </code>
*
* @category XML
* @package XML_DTD
* @author Igor Feghali <ifeghali@php.net>
* @copyright 2008 Igor Feghali
* @license http://opensource.org/licenses/bsd-license New BSD License
* @link http://pear.php.net/package/XML_DTD
*/
class XML_DTD_XmlParser extends XML_Parser
{
var $children = array();
var $ptr = null;
var $folding = true;
/**
* XML_DTD_XmlParser::XmlParser()
*
* Constructor, not to be used. Use factory() instead.
*
* @return void
* @access public
*/
function XML_DTD_XmlParser()
{
parent::XML_Parser();
$this->ptr =& $this;
}
/**
* XML_DTD_XmlParser::factory()
*
* Parses a XML file and returns its "skeleton".
*
* @param string $xml Path to XML file
*
* @return object Instance of XML_DTD_XmlElement containing root
* @access public
*/
function factory($xml)
{
$p =& new XML_DTD_XmlParser();
$result = $p->setInputFile($xml);
if (PEAR::isError($result)) {
return $result;
}
$result = $p->parse();
if (PEAR::isError($result)) {
return $result;
}
/**
* Preventing the circular reference memory leak.
* See: http://bugs.php.net/bug.php?id=33595
*/
unset($p->_handlerObj, $p->ptr);
if (count($p->children)) {
return $p->children[0];
} else {
return PEAR::raiseError('empty XML?');
}
}
/**
* handle start element
*
* @param resource $xp xml parser resource
* @param string $name name of the element
* @param array $attr attributes
*
* @return void
* @access private
*/
function startHandler($xp, $name, $attr)
{
$e =& new XML_DTD_XmlElement();
$e->name = $name;
$e->attr = $attr;
$e->lineno = @xml_get_current_line_number($xp);
$e->colno = @xml_get_current_column_number($xp);
$e->parent =& $this->ptr;
$this->ptr->children[] =& $e;
$this->ptr =& $e;
}
/**
* handle end element
*
* @param resource $xp xml parser resource
* @param string $name name of the element
*
* @return void
* @access private
*/
function endHandler($xp, $name)
{
$tmp =& $this->ptr;
$this->ptr =& $this->ptr->parent;
/**
* We do not need the reference to the parent object anymore. Clean it
* up to prevent the circular reference memory leak.
* See: http://bugs.php.net/bug.php?id=33595
*/
unset($tmp->parent);
}
/**
* handle character data
*
* @param resource $xp xml parser resource
* @param string $cdata character data
*
* @return void
* @access private
*/
function cdataHandler($xp, $cdata)
{
if (strlen(trim($cdata))) {
$this->ptr->content = '#PCDATA';
}
}
}
/**
* XML_DTD_XmlElement
*
* Simplistic class to hold XML elements and its associated data
*
* @category XML
* @package XML_DTD
* @author Igor Feghali <ifeghali@php.net>
* @copyright 2008 Igor Feghali
* @license http://opensource.org/licenses/bsd-license New BSD License
* @link http://pear.php.net/package/XML_DTD
*/
class XML_DTD_XmlElement
{
var $name = '';
var $content = 'EMPTY';
var $attr = array();
var $children = array();
var $parent = null;
var $lineno = 0;
var $colno = 0;
/**
* XML_DTD_XmlElement::coord()
*
* Returns the line/column numbers of the start of a XML element.
*
* @return string Position of element in xml file (line:column).
* @access public
*/
function coord()
{
return sprintf('%d:%d', $this->lineno, $this->colno);
}
/**
* XML_DTD_XmlElement::getChildrenNames()
*
* Returns the names of the children of current XML element.
*
* @return array Array containing child names
* @access public
*/
function getChildrenNames()
{
$return = array();
foreach ($this->children as $child) {
$return[] = $child->name;
}
return $return;
}
}
?>
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