lib/RssParser.php

   1 <?php // -*-php-*-
   2 rcs_id('$Id: RssParser.php,v 1.1 2004-04-09 17:46:40 rurban Exp $');
   3 /**
   4  * RSSParser Class, requires the expat extension
   5  * Based on Duncan Gough RSSParser class
   6  * Copyleft Arnaud Fontaine
   7  * Licence : GPL
   8
   9  This file is part of PhpWiki.
  10
  11  PhpWiki is free software; you can redistribute it and/or modify
  12  it under the terms of the GNU General Public License as published by
  13  the Free Software Foundation; either version 2 of the License, or
  14  (at your option) any later version.
  15
  16  PhpWiki is distributed in the hope that it will be useful,
  17  but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  GNU General Public License for more details.
  20
  21  You should have received a copy of the GNU General Public License
  22  along with PhpWiki; if not, write to the Free Software
  23  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  24  */
  25
  26 /**
  27  * 2004-04-09 16:30:50 rurban:
  28  *   added fsockopen allow_url_fopen = Off workaround
  29  */
  30 class RSSParser {
  31
  32     var $title = "";
  33     var $link  = "";
  34     var $description = "";
  35     var $inside_item = false;
  36     var $items = array();
  37     var $channel = array();
  38     var $divers = "";
  39     var $date = "";
  40
  41     function startElement($parser, $name, $attrs=''){
  42         global $current_tag;
  43
  44         $current_tag = $name;
  45         if ($current_tag == "ITEM")
  46             $this->inside_item = true;
  47     } // startElement
  48
  49     function endElement($parser, $tagName, $attrs=''){
  50         global $current_tag;
  51
  52         if ($tagName == "ITEM") {
  53             $this->items[] = array("title" => $this->title,
  54                                    "description" => $this->description,
  55                                    "link" => $this->link);
  56             $this->title       = "";
  57             $this->description = "";
  58             $this->link        = "";
  59             $this->inside_item = false;
  60
  61         } elseif ($tagName == "CHANNEL") {
  62
  63             $this->channel = array("title" => $this->title,
  64                                    "description" => $this->description,
  65                                    "link" => $this->link,
  66                                    "date" => $this->date,
  67                                    "divers" => $this->divers);
  68             $this->title       = "";
  69             $this->description = "";
  70             $this->link        = "";
  71             $this->divers      = "";
  72             $this->date        = "";
  73         }
  74     } // endElement
  75
  76     function characterData($parser, $data){
  77         global $current_tag;
  78
  79         if ($this->inside_item){
  80             switch ($current_tag){
  81
  82             case "TITLE":
  83                 $this->title .= trim($data);
  84                 break;
  85             case "DESCRIPTION":
  86                 $this->description .= trim($data);
  87                 break;
  88             case "LINK":
  89                 $this->link .= trim($data);
  90                 break;
  91
  92             default:
  93                 break;
  94             }
  95         } else {
  96             switch($current_tag){
  97
  98             case "TITLE":
  99                 $this->title .= trim($data);
 100                 break;
 101             case "DESCRIPTION":
 102                 $this->description .= trim($data);
 103                 break;
 104             case "LINK":
 105                 $this->link .= trim($data);
 106                 break;
 107             case "DC:DATE":
 108                 $this->date .= trim($data);
 109             default:
 110                 $this->divers .= $current_tag."/".$data;
 111                 break;
 112             }
 113         }
 114     } // characterData
 115
 116     function parse_results($xml_parser, $rss_parser, $file)   {
 117         xml_set_object($xml_parser, &$rss_parser);
 118         xml_set_element_handler($xml_parser, "startElement", "endElement");
 119         xml_set_character_data_handler($xml_parser, "characterData");
 120
 121         if (ini_get('allow_url_fopen')) {
 122             $fp = fopen("$file","r") or die("Error reading XML file, $file");
 123             while ($data = fread($fp, 4096))  {
 124                 xml_parse($xml_parser, $data, feof($fp)) or
 125                     die(sprintf("XML error: %s at line %d",
 126                                 xml_error_string(xml_get_error_code($xml_parser)),
 127                                 xml_get_current_line_number($xml_parser)));
 128             }
 129             fclose($fp);
 130         } else {
 131             // other url_fopen workarounds: curl, socket (http 80 only)
 132             require_once("lib/HttpClient.php");
 133             $data = HttpClient::quickGet($file);
 134             xml_parse($xml_parser, $data, true) or
 135                 die(sprintf("XML error: %s at line %d",
 136                             xml_error_string(xml_get_error_code($xml_parser)),
 137                             xml_get_current_line_number($xml_parser)));
 138         }
 139         xml_parser_free($xml_parser);
 140     }
 141 }
 142
 143 // For emacs users
 144 // Local Variables:
 145 // mode: php
 146 // tab-width: 8
 147 // c-basic-offset: 4
 148 // c-hanging-comment-ender-p: nil
 149 // indent-tabs-mode: nil
 150 // End:
 151 ?>