672 Zeilen
18 KiB
PHP
672 Zeilen
18 KiB
PHP
<?php
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/* vim: set expandtab tabstop=4 shiftwidth=4 softtabstop=4: */
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/**
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* XML_Parser2
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*
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* XML Parser package
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*
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* PHP version 5
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*
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* LICENSE:
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*
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* Copyright (c) 2002-2008 The PHP Group
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
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* IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
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* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* @category XML
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* @package XML_Parser2
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* @author Stig Bakken <ssb@fast.no>
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* @author Tomas V.V.Cox <cox@idecnet.com>
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* @author Stephan Schmidt <schst@php.net>
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* @copyright 2002-2008 The PHP Group
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* @license http://opensource.org/licenses/bsd-license New BSD License
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* @version CVS: $Id$
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* @link http://pear.php.net/package/XML_Parser2
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*/
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/**
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* resource could not be created
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*/
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define('XML_PARSER2_ERROR_NO_RESOURCE', 200);
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/**
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* unsupported mode
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*/
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define('XML_PARSER2_ERROR_UNSUPPORTED_MODE', 201);
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/**
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* invalid encoding was given
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*/
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define('XML_PARSER2_ERROR_INVALID_ENCODING', 202);
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/**
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* specified file could not be read
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*/
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define('XML_PARSER2_ERROR_FILE_NOT_READABLE', 203);
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/**
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* invalid input
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*/
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define('XML_PARSER2_ERROR_INVALID_INPUT', 204);
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/**
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* remote file cannot be retrieved in safe mode
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*/
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define('XML_PARSER2_ERROR_REMOTE', 205);
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/**
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* XML Parser class.
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*
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* This is an XML parser based on PHP's "xml" extension,
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* based on the bundled expat library.
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*
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* Notes:
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* - It requires PHP 4.0.4pl1 or greater
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* - From revision 1.17, the function names used by the 'func' mode
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* are in the format "xmltag_$elem", for example: use "xmltag_name"
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* to handle the <name></name> tags of your xml file.
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* - different parsing modes
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*
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* @category XML
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* @package XML_Parser2
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* @author Stig Bakken <ssb@fast.no>
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* @author Tomas V.V.Cox <cox@idecnet.com>
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* @author Stephan Schmidt <schst@php.net>
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* @copyright 2002-2008 The PHP Group
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* @license http://opensource.org/licenses/bsd-license New BSD License
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* @version Release: @package_version@
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* @link http://pear.php.net/package/XML_Parser2
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* @todo create XML_Parser2_Namespace to parse documents with namespaces
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* @todo create XML_Parser2_Pull
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* @todo Tests that need to be made:
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* - mixing character encodings
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* - a test using all expat handlers
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* - options (folding, output charset)
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*/
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class XML_Parser2
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{
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// {{{ properties
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/**
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* XML parser handle
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*
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* @var resource
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* @see xml_parser_create()
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*/
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var $parser;
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/**
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* File handle if parsing from a file
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*
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* @var resource
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*/
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var $fp;
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/**
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* Whether to do case folding
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*
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* If set to true, all tag and attribute names will
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* be converted to UPPER CASE.
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*
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* @var boolean
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*/
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var $folding = true;
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/**
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* Mode of operation, one of "event" or "func"
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*
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* @var string
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*/
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var $mode;
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/**
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* Mapping from expat handler function to class method.
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*
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* @var array
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*/
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var $handler = array(
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'character_data_handler' => 'cdataHandler',
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'default_handler' => 'defaultHandler',
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'processing_instruction_handler' => 'piHandler',
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'unparsed_entity_decl_handler' => 'unparsedHandler',
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'notation_decl_handler' => 'notationHandler',
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'external_entity_ref_handler' => 'entityrefHandler'
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);
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/**
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* source encoding
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*
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* @var string
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*/
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var $srcenc;
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/**
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* target encoding
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*
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* @var string
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*/
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var $tgtenc;
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/**
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* handler object
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*
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* @var object
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*/
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var $_handlerObj;
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/**
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* valid encodings
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*
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* @var array
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*/
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var $_validEncodings = array('ISO-8859-1', 'UTF-8', 'US-ASCII');
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// }}}
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// {{{ php5 constructor
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/**
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* PHP5 constructor
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*
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* @param string $srcenc source charset encoding, use NULL (default) to use
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* whatever the document specifies
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* @param string $mode how this parser object should work, "event" for
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* startelement/endelement-type events, "func"
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* to have it call functions named after elements
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* @param string $tgtenc a valid target encoding
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*/
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function __construct($srcenc = null, $mode = 'event', $tgtenc = null)
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{
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$this->mode = $mode;
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$this->srcenc = $srcenc;
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$this->tgtenc = $tgtenc;
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}
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// }}}
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/**
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* Sets the mode of the parser.
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*
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* Possible modes are:
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* - func
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* - event
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*
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* You can set the mode using the second parameter
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* in the constructor.
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*
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* This method is only needed, when switching to a new
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* mode at a later point.
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*
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* @param string $mode mode, either 'func' or 'event'
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*
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* @return boolean|object true on success, PEAR_Error otherwise
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* @access public
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*/
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function setMode($mode)
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{
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if ($mode != 'func' && $mode != 'event') {
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throw new XML_Parser2_Exception('Unsupported mode given',
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XML_PARSER2_ERROR_UNSUPPORTED_MODE);
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}
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$this->mode = $mode;
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return true;
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}
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/**
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* Sets the object, that will handle the XML events
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*
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* This allows you to create a handler object independent of the
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* parser object that you are using and easily switch the underlying
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* parser.
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*
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* If no object will be set, XML_Parser2 assumes that you
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* extend this class and handle the events in $this.
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*
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* @param object $obj object to handle the events
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*
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* @return boolean will always return true
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* @access public
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* @since v1.2.0beta3
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*/
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function setHandlerObj($obj)
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{
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$this->_handlerObj = $obj;
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return true;
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}
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/**
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* Init the element handlers
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*
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* @return mixed
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* @access private
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*/
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function _initHandlers()
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{
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if (!is_resource($this->parser)) {
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return false;
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}
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if (!is_object($this->_handlerObj)) {
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$this->_handlerObj = $this;
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}
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switch ($this->mode) {
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case 'func':
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xml_set_object($this->parser, $this->_handlerObj);
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xml_set_element_handler($this->parser,
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array($this, 'funcStartHandler'), array($this, 'funcEndHandler'));
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break;
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case 'event':
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xml_set_object($this->parser, $this->_handlerObj);
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xml_set_element_handler($this->parser, 'startHandler', 'endHandler');
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break;
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default:
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throw new XML_Parser2_Exception('Unsupported mode given',
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XML_PARSER2_ERROR_UNSUPPORTED_MODE);
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break;
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}
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/**
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* set additional handlers for character data, entities, etc.
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*/
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foreach ($this->handler as $xml_func => $method) {
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if (method_exists($this->_handlerObj, $method)) {
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$xml_func = 'xml_set_' . $xml_func;
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$xml_func($this->parser, $method);
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}
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}
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}
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// {{{ _create()
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/**
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* create the XML parser resource
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*
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* Has been moved from the constructor to avoid
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* problems with object references.
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*
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* Furthermore it allows us returning an error
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* if something fails.
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*
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* NOTE: uses '@' error suppresion in this method
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*
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* @return bool|PEAR_Error true on success, PEAR_Error otherwise
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* @access private
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* @see xml_parser_create
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*/
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function _create()
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{
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if ($this->srcenc === null) {
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$xp = @xml_parser_create();
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} else {
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$xp = @xml_parser_create($this->srcenc);
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}
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if (is_resource($xp)) {
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if ($this->tgtenc !== null) {
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if (!@xml_parser_set_option($xp, XML_OPTION_TARGET_ENCODING,
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$this->tgtenc)
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) {
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throw new XML_Parser2_Exception('invalid target encoding',
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XML_PARSER2_ERROR_INVALID_ENCODING);
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}
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}
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$this->parser = $xp;
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$result = $this->_initHandlers($this->mode);
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xml_parser_set_option($xp, XML_OPTION_CASE_FOLDING, $this->folding);
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return true;
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}
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if (!in_array(strtoupper($this->srcenc), $this->_validEncodings)) {
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throw new XML_Parser2_Exception('invalid source encoding',
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XML_PARSER2_ERROR_INVALID_ENCODING);
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}
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throw new XML_Parser2_Exception('Unable to create XML parser resource.',
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XML_PARSER2_ERROR_NO_RESOURCE);
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}
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// }}}
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// {{{ reset()
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/**
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* Reset the parser.
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*
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* This allows you to use one parser instance
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* to parse multiple XML documents.
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*
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* @access public
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* @return boolean|object true on success, PEAR_Error otherwise
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*/
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function reset()
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{
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$result = $this->_create();
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return true;
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}
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// }}}
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// {{{ setInputFile()
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/**
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* Sets the input xml file to be parsed
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*
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* @param string $file Filename (full path)
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*
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* @return resource fopen handle of the given file
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* @access public
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* @throws XML_Parser2_Error
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* @see setInput(), setInputString(), parse()
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*/
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function setInputFile($file)
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{
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/**
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* check, if file is a remote file
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*/
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if (preg_match('/^(http|ftp):\/\//i', substr($file, 0, 10))) {
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if (!ini_get('allow_url_fopen')) {
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return $this->
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raiseError('Remote files cannot be parsed, as safe mode is enabled.',
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XML_PARSER2_ERROR_REMOTE);
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}
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}
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$fp = @fopen($file, 'rb');
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if (is_resource($fp)) {
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$this->fp = $fp;
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return $fp;
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}
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throw new XML_Parser2_Exception('File could not be opened.',
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XML_PARSER2_ERROR_FILE_NOT_READABLE);
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}
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// }}}
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// {{{ setInputString()
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/**
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* XML_Parser2::setInputString()
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*
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* Sets the xml input from a string
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*
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* @param string $data a string containing the XML document
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*
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* @return null
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*/
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function setInputString($data)
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{
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$this->fp = $data;
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return null;
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}
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// }}}
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// {{{ setInput()
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/**
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* Sets the file handle to use with parse().
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*
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* You should use setInputFile() or setInputString() if you
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* pass a string
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*
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* @param mixed $fp Can be either a resource returned from fopen(),
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* a URL, a local filename or a string.
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*
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* @return mixed
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* @access public
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* @see parse()
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* @uses setInputString(), setInputFile()
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*/
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function setInput($fp)
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{
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if (is_resource($fp)) {
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$this->fp = $fp;
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return true;
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} elseif (preg_match('/^[a-z]+:\/\//i', substr($fp, 0, 10))) {
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// see if it's an absolute URL (has a scheme at the beginning)
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return $this->setInputFile($fp);
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} elseif (file_exists($fp)) {
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// see if it's a local file
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return $this->setInputFile($fp);
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} else {
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// it must be a string
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$this->fp = $fp;
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return true;
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}
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throw new XML_Parser2_Exception('Illegal input format',
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XML_PARSER2_ERROR_INVALID_INPUT);
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}
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// }}}
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// {{{ parse()
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/**
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* Central parsing function.
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*
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* @return bool|PEAR_Error returns true on success, or a PEAR_Error otherwise
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* @access public
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*/
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function parse()
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{
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/**
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* reset the parser
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*/
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$result = $this->reset();
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// if $this->fp was fopened previously
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if (is_resource($this->fp)) {
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while ($data = fread($this->fp, 4096)) {
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if (!$this->_parseString($data, feof($this->fp))) {
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throw new XML_Parser2_Exception();
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}
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}
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} else {
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// otherwise, $this->fp must be a string
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if (!$this->_parseString($this->fp, true)) {
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throw new XML_Parser2_Exception();
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}
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}
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$this->free();
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return true;
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}
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/**
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* XML_Parser2::_parseString()
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*
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* @param string $data data
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* @param bool $eof end-of-file flag
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*
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* @return bool
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* @access private
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* @see parseString()
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**/
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function _parseString($data, $eof = false)
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{
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return xml_parse($this->parser, $data, $eof);
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}
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// }}}
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// {{{ parseString()
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/**
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* XML_Parser2::parseString()
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*
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* Parses a string.
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*
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* @param string $data XML data
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* @param boolean $eof If set and TRUE, data is the last piece
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* of data sent in this parser
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*
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* @return bool|PEAR_Error true on success or a PEAR Error
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* @throws XML_Parser2_Error
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* @see _parseString()
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*/
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function parseString($data, $eof = false)
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{
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if (!isset($this->parser) || !is_resource($this->parser)) {
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$this->reset();
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}
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if (!$this->_parseString($data, $eof)) {
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throw new XML_Parser2_Exception();
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}
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if ($eof === true) {
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$this->free();
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}
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return true;
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}
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/**
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* XML_Parser2::free()
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*
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* Free the internal resources associated with the parser
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*
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* @return null
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**/
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function free()
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{
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if (isset($this->parser) && is_resource($this->parser)) {
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xml_parser_free($this->parser);
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unset( $this->parser );
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}
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if (isset($this->fp) && is_resource($this->fp)) {
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fclose($this->fp);
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}
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unset($this->fp);
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return null;
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}
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// }}}
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// {{{ funcStartHandler()
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/**
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* derives and calls the Start Handler function
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*
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* @param mixed $xp ??
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* @param mixed $elem ??
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* @param mixed $attribs ??
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*
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* @return void
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*/
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function funcStartHandler($xp, $elem, $attribs)
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{
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$func = 'xmltag_' . $elem;
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$func = str_replace(array('.', '-', ':'), '_', $func);
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if (method_exists($this->_handlerObj, $func)) {
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call_user_func(array($this->_handlerObj, $func), $xp, $elem, $attribs);
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} elseif (method_exists($this->_handlerObj, 'xmltag')) {
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call_user_func(array($this->_handlerObj, 'xmltag'),
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$xp, $elem, $attribs);
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}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ funcEndHandler()
|
|
|
|
/**
|
|
* derives and calls the End Handler function
|
|
*
|
|
* @param mixed $xp ??
|
|
* @param mixed $elem ??
|
|
*
|
|
* @return void
|
|
*/
|
|
function funcEndHandler($xp, $elem)
|
|
{
|
|
$func = 'xmltag_' . $elem . '_';
|
|
$func = str_replace(array('.', '-', ':'), '_', $func);
|
|
if (method_exists($this->_handlerObj, $func)) {
|
|
call_user_func(array($this->_handlerObj, $func), $xp, $elem);
|
|
} elseif (method_exists($this->_handlerObj, 'xmltag_')) {
|
|
call_user_func(array($this->_handlerObj, 'xmltag_'), $xp, $elem);
|
|
}
|
|
}
|
|
|
|
// }}}
|
|
// {{{ startHandler()
|
|
|
|
/**
|
|
* abstract method signature for Start Handler
|
|
*
|
|
* @param mixed $xp ??
|
|
* @param mixed $elem ??
|
|
* @param mixed $attribs ??
|
|
*
|
|
* @return null
|
|
* @abstract
|
|
*/
|
|
function startHandler($xp, $elem, $attribs)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
// }}}
|
|
// {{{ endHandler()
|
|
|
|
/**
|
|
* abstract method signature for End Handler
|
|
*
|
|
* @param mixed $xp ??
|
|
* @param mixed $elem ??
|
|
*
|
|
* @return null
|
|
* @abstract
|
|
*/
|
|
function endHandler($xp, $elem)
|
|
{
|
|
return null;
|
|
}
|
|
|
|
|
|
// }}}me
|
|
}
|
|
|
|
class XML_Parser2_Exception extends Exception {
|
|
/**
|
|
* construct a new error instance
|
|
*
|
|
* You may either pass a message or an xml_parser resource as first
|
|
* parameter. If a resource has been passed, the last error that
|
|
* happened will be retrieved and returned.
|
|
*
|
|
* @param string|resource $msgorparser message or parser resource
|
|
* @param integer $code error code
|
|
*
|
|
* @access public
|
|
*/
|
|
public function __construct($msgorparser = 'unknown error', $code = 0) {
|
|
if (is_resource($msgorparser)) {
|
|
$code = xml_get_error_code($msgorparser);
|
|
$msgorparser = sprintf('%s at XML input line %d:%d',
|
|
xml_error_string($code),
|
|
xml_get_current_line_number($msgorparser),
|
|
xml_get_current_column_number($msgorparser));
|
|
}
|
|
parent::__construct($msgorparser, $code);
|
|
}
|
|
}
|
|
?>
|