inc/main/classes/parser/xml/class_XmlParser.php

   1 <?php
   2 // Own namespace
   3 namespace CoreFramework\Parser\Xml;
   4
   5 // Import framework stuff
   6 use CoreFramework\Template\CompileableTemplate;
   7
   8 /**
   9  * A Xml Parser class
  10  *
  11  * @author              Roland Haeder <webmaster@shipsimu.org>
  12  * @version             0.0.0
  13  * @copyright   Copyright (c) 2007, 2008 Roland Haeder, 2009 - 2017 Core Developer Team
  14  * @license             GNU GPL 3.0 or any newer version
  15  * @link                http://www.shipsimu.org
  16  *
  17  * This program is free software: you can redistribute it and/or modify
  18  * it under the terms of the GNU General Public License as published by
  19  * the Free Software Foundation, either version 3 of the License, or
  20  * (at your option) any later version.
  21  *
  22  * This program is distributed in the hope that it will be useful,
  23  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  24  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25  * GNU General Public License for more details.
  26  *
  27  * You should have received a copy of the GNU General Public License
  28  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  29  */
  30 class XmlParser extends BaseParser implements Parseable {
  31         // Exception constants
  32         const EXCEPTION_XML_PARSER_ERROR             = 0x1e0;
  33         const EXCEPTION_XML_NODE_UNKNOWN             = 0x1e1;
  34         const EXCEPTION_XML_NODE_MISMATCH            = 0x1e2;
  35
  36         /**
  37          * Protected constructor
  38          *
  39          * @return      void
  40          */
  41         protected function __construct () {
  42                 // Call parent constructor
  43                 parent::__construct(__CLASS__);
  44         }
  45
  46         /**
  47          * Creates an instance of the class Parser and prepares it for usage
  48          *
  49          * @param       $templateInstance       A CompileableTemplate instance
  50          * @return      $parserInstance         An instance of this parser
  51          */
  52         public static final function createXmlParser (CompileableTemplate $templateInstance) {
  53                 // Get a new instance
  54                 $parserInstance = new XmlParser();
  55
  56                 // Set the template instance
  57                 $parserInstance->setTemplateInstance($templateInstance);
  58
  59                 // Return the prepared instance
  60                 return $parserInstance;
  61         }
  62
  63         /**
  64          * Parses the given XML content
  65          *
  66          * @param       $content        Valid XML content
  67          * @return      void
  68          * @throws      XmlParserException      If an XML error was found
  69          */
  70         public function parseXmlContent ($content) {
  71                 // Convert all to UTF8
  72                 if (empty($content)) {
  73                         // No empty content!
  74                         self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('Empty content! Backtrace: <pre>');
  75                         debug_print_backtrace();
  76                         self::createDebugInstance(__CLASS__, __LINE__)->debugOutput('</pre>');
  77                         exit();
  78                 } elseif (function_exists('recode')) {
  79                         // Recode found, so use it
  80                         $content = recode('html..utf8', $content);
  81                 } elseif (function_exists('mb_convert_encoding')) {
  82                         // Use mb_convert_encoding()
  83                         $content = mb_convert_encoding($content, 'UTF-8', 'auto');
  84                 } else {
  85                         // @TODO We need to find a fallback solution here
  86                         $this->partialStub('Cannot find recode/mbstring extension!');
  87                 } // END - if
  88
  89                 // Get an XML parser
  90                 $xmlParser = xml_parser_create();
  91
  92                 // Force case-folding to on
  93                 xml_parser_set_option($xmlParser, XML_OPTION_CASE_FOLDING, TRUE);
  94
  95                 // Set UTF-8
  96                 xml_parser_set_option($xmlParser, XML_OPTION_TARGET_ENCODING, 'UTF-8');
  97
  98                 // Get instance (we need this :( )
  99                 $templateInstance = $this->getTemplateInstance();
 100
 101                 // Set object
 102                 xml_set_object($xmlParser, $templateInstance);
 103
 104                 // Set handler call-backs
 105                 xml_set_element_handler($xmlParser, 'startElement', 'finishElement');
 106                 xml_set_character_data_handler($xmlParser, 'characterHandler');
 107
 108                 // Now parse the XML tree
 109                 if (!xml_parse($xmlParser, $content)) {
 110                         // Error found in XML!
 111                         //* DEBUG: */ exit(__METHOD__ . ':<pre>'.htmlentities($content).'</pre>');
 112                         throw new XmlParserException(array($this, $xmlParser), self::EXCEPTION_XML_PARSER_ERROR);
 113                 } // END - if
 114
 115                 // Free the parser
 116                 xml_parser_free($xmlParser);
 117         }
 118
 119 }