plugin/showrss.inc.php

   1 <?php
   2 /////////////////////////////////////////////////
   3 // PukiWiki - Yet another WikiWikiWeb clone.
   4 //
   5 // $Id: showrss.inc.php,v 1.12 2004/06/20 04:20:18 henoheno Exp $
   6 //
   7 // Modified version by PANDA <panda@arino.jp>
   8 //
   9
  10 /**
  11  *
  12  * showrss ¥×¥é¥°¥¤¥ó (Created by hiro_do3ob@yahoo.co.jp)
  13  *
  14  * ¥é¥¤¥»¥ó¥¹¤Ï PukiWiki ËÜÂÎ¤ÈÆ±¤¸¤¯ GNU General Public License (GPL) ¤Ç¤¹¡£
  15  * http://www.gnu.org/licenses/gpl.txt
  16  *
  17  * pukiwikiÍÑ¤Î¥×¥é¥°¥¤¥ó¤Ç¤¹¡£
  18  * pukiwiki1.3.2°Ê¾å¤ÇÆ°¤¯¤È»×¤¤¤Þ¤¹¡£
  19  *
  20  * º£¤Î¤È¤³¤íÆ°ºî¤µ¤»¤ë¤¿¤á¤Ë¤ÏPHP ¤Î xml extension ¤¬É¬¿Ü¤Ç¤¹¡£PHP¤ËÁÈ¤ß¹þ¤Þ¤ì¤Æ¤Ê¤¤¾ì¹ç¤Ï¤½¤Ã¤±¤Ê¤¤¥¨¥é¡¼¤¬½Ð¤ë¤È»×¤¤¤Þ¤¹¡£
  21  * Àµµ¬É½¸½ or Ê¸»úÎó´Ø¿ô¤Ç¤Ê¤ó¤È¤«¤Ê¤é¤Ê¤¯¤â¤Ê¤µ¤²¤Ê¤ó¤Ç¤¹¤¬¼ûÍ×¤Ã¤Æ¤É¤ì¤¯¤é¤¤¤¢¤ë¤Î¤«¤ï¤«¤é¤¤¤Î¤ÇÊÝÎ±¤Ç¤¹¡£
  22  *
  23  * version: Id:showrss.inc.php,v 1.40 2003/03/18 11:52:58 hiro Exp
  24  *
  25  */
  26
  27 // showrss¥×¥é¥°¥¤¥ó¤¬»ÈÍÑ²ÄÇ½¤«¤É¤¦¤«¤òÉ½¼¨
  28 function plugin_showrss_action()
  29 {
  30         $xml_extension = extension_loaded('xml');
  31         $mbstring_extension = extension_loaded('mbstring');
  32
  33         $xml_msg      = $xml_extension      ? 'xml extension is loaded' : 'COLOR(RED){xml extension is not loaded}';
  34         $mbstring_msg = $mbstring_extension ? 'mbstring extension is loaded' : 'COLOR(RED){mbstring extension is not loaded}';
  35
  36         $showrss_info = '';
  37         $showrss_info .= "| xml parser | $xml_msg |\n";
  38         $showrss_info .= "| multibyte | $mbstring_msg |\n";
  39
  40         return array('msg' => 'showrss_info', 'body' => convert_html($showrss_info));
  41 }
  42
  43 function plugin_showrss_convert()
  44 {
  45         if (func_num_args() == 0)
  46         {
  47                 // °ú¿ô¤¬¤Ê¤¤¾ì¹ç¤Ï¥¨¥é¡¼
  48                 return "<p>showrss: no parameter(s).</p>\n";
  49         }
  50         if (!extension_loaded('xml'))
  51         {
  52                 // xml ³ÈÄ¥µ¡Ç½¤¬Í¸ú¤Ç¤Ê¤¤¾ì¹ç¡£
  53                 return "<p>showrss: xml extension is not loaded</p>\n";
  54         }
  55
  56         $array = func_get_args();
  57         $rssurl = $tmplname = $usecache = $usetimestamp = '';
  58
  59         switch (func_num_args())
  60         {
  61                 case 4:
  62                         $usetimestamp = trim($array[3]);
  63                 case 3:
  64                         $usecache = $array[2];
  65                 case 2:
  66                         $tmplname = strtolower(trim($array[1]));
  67                 case 1:
  68                         $rssurl = trim($array[0]);
  69         }
  70
  71         // RSS ¥Ñ¥¹¤ÎÃÍ¥Á¥§¥Ã¥¯
  72         if (!is_url($rssurl))
  73         {
  74                 return '<p>showrss: syntax error. '.htmlspecialchars($rssurl)."</p>\n";
  75         }
  76
  77         $class = "ShowRSS_html_$tmplname";
  78         if (!class_exists($class))
  79         {
  80                 $class = 'ShowRSS_html';
  81         }
  82
  83         list($rss,$time) = plugin_showrss_get_rss($rssurl,$usecache);
  84         if ($rss === FALSE)
  85         {
  86                 return "<p>showrss: cannot get rss from server.</p>\n";
  87         }
  88
  89         $obj = new $class($rss);
  90
  91         $timestamp = '';
  92         if ($usetimestamp > 0)
  93         {
  94                 $time = get_date('Y/m/d H:i:s',$time);
  95                 $timestamp = "<p style=\"font-size:10px; font-weight:bold\">Last-Modified:$time</p>";
  96         }
  97         return $obj->toString($timestamp);
  98 }
  99 // rssÇÛÎó¤«¤éhtml¤òºî¤ë
 100 class ShowRSS_html
 101 {
 102         var $items = array();
 103         var $class = '';
 104
 105         function ShowRSS_html($rss)
 106         {
 107                 foreach ($rss as $date=>$items)
 108                 {
 109                         foreach ($items as $item)
 110                         {
 111                                 $link = $item['LINK'];
 112                                 $title = $item['TITLE'];
 113                                 $passage = get_passage($item['_TIMESTAMP']);
 114                                 $link = "<a href=\"$link\" title=\"$title $passage\">$title</a>";
 115                                 $this->items[$date][] = $this->format_link($link);
 116                         }
 117                 }
 118         }
 119         function format_link($link)
 120         {
 121                 return "$link<br />\n";
 122         }
 123         function format_list($date,$str)
 124         {
 125                 return $str;
 126         }
 127         function format_body($str)
 128         {
 129                 return $str;
 130         }
 131         function toString($timestamp)
 132         {
 133                 $retval = '';
 134                 foreach ($this->items as $date=>$items)
 135                 {
 136                         $retval .= $this->format_list($date,join('',$items));
 137                 }
 138                 $retval = $this->format_body($retval);
 139                 return <<<EOD
 140 <div{$this->class}>
 141 $retval$timestamp
 142 </div>
 143 EOD;
 144         }
 145 }
 146 class ShowRSS_html_menubar extends ShowRSS_html
 147 {
 148         var $class = ' class="small"';
 149
 150         function format_link($link)
 151         {
 152                 return "<li>$link</li>\n";
 153         }
 154         function format_body($str)
 155         {
 156                 return "<ul class=\"recent_list\">\n$str</ul>\n";
 157         }
 158 }
 159 class ShowRSS_html_recent extends ShowRSS_html
 160 {
 161         var $class = ' class="small"';
 162
 163         function format_link($link)
 164         {
 165                 return "<li>$link</li>\n";
 166         }
 167         function format_list($date,$str)
 168         {
 169                 return "<strong>$date</strong>\n<ul class=\"recent_list\">\n$str</ul>\n";
 170         }
 171 }
 172 // rss¤ò¼èÆÀ¤¹¤ë
 173 function plugin_showrss_get_rss($target,$usecache)
 174 {
 175         $buf = '';
 176         $time = NULL;
 177         if ($usecache)
 178         {
 179                 // ´ü¸ÂÀÚ¤ì¤Î¥¥ã¥Ã¥·¥å¤ò¥¯¥ê¥¢
 180                 plugin_showrss_cache_expire($usecache);
 181
 182                 // ¥¥ã¥Ã¥·¥å¤¬¤¢¤ì¤Ð¼èÆÀ¤¹¤ë
 183                 $filename = CACHE_DIR . encode($target) . '.tmp';
 184                 if (is_readable($filename))
 185                 {
 186                         $buf = join('',file($filename));
 187                         $time = filemtime($filename) - LOCALZONE;
 188                 }
 189         }
 190         if ($time === NULL)
 191         {
 192                 // rssËÜÂÎ¤ò¼èÆÀ
 193                 $data = http_request($target);
 194                 if ($data['rc'] !== 200)
 195                 {
 196                         return array(FALSE,0);
 197                 }
 198                 $buf = $data['data'];
 199                 $time = UTIME;
 200                 // ¥¥ã¥Ã¥·¥å¤òÊÝÂ¸
 201                 if ($usecache)
 202                 {
 203                         $fp = fopen($filename, 'w');
 204                         fwrite($fp,$buf);
 205                         fclose($fp);
 206                 }
 207         }
 208
 209         // parse
 210         $obj = new ShowRSS_XML();
 211         return array($obj->parse($buf),$time);
 212 }
 213 // ´ü¸ÂÀÚ¤ì¤Î¥¥ã¥Ã¥·¥å¤ò¥¯¥ê¥¢
 214 function plugin_showrss_cache_expire($usecache)
 215 {
 216         $expire = $usecache * 60 * 60; // Hour
 217
 218         $dh = dir(CACHE_DIR);
 219         while (($file = $dh->read()) !== FALSE)
 220         {
 221                 if (substr($file,-4) != '.tmp')
 222                 {
 223                         continue;
 224                 }
 225                 $file = CACHE_DIR.$file;
 226                 $last = time() - filemtime($file);
 227
 228                 if ($last > $expire)
 229                 {
 230                         unlink($file);
 231                 }
 232         }
 233         $dh->close();
 234 }
 235 // rss¤ò¼èÆÀ¡¦ÇÛÎó²½
 236 class ShowRSS_XML
 237 {
 238         var $items;
 239         var $item;
 240         var $is_item;
 241         var $tag;
 242
 243         function parse($buf)
 244         {
 245                 // ½é´ü²½
 246                 $this->items = array();
 247                 $this->item = array();
 248                 $this->is_item = FALSE;
 249                 $this->tag = '';
 250
 251                 $xml_parser = xml_parser_create();
 252                 xml_set_element_handler($xml_parser,array(&$this,'start_element'),array(&$this,'end_element'));
 253                 xml_set_character_data_handler($xml_parser,array(&$this,'character_data'));
 254
 255                 if (!xml_parse($xml_parser,$buf,1))
 256                 {
 257                         return(sprintf('XML error: %s at line %d in %s',
 258                                 xml_error_string(xml_get_error_code($xml_parser)),
 259                                 xml_get_current_line_number($xml_parser),$buf));
 260                 }
 261                 xml_parser_free($xml_parser);
 262
 263                 return $this->items;
 264         }
 265         function escape($str)
 266         {
 267                 // RSSÃæ¤Î "&lt; &gt; &amp;" ¤Ê¤É¤ò °ìÃ¶ "< > &" ¤ËÌá¤·¡¢ ¡ã "&amp;" ¤¬ "&amp;amp;" ¤Ë¤Ê¤Ã¤Á¤ã¤¦¤ÎÂÐºö
 268                 // ¤½¤Î¸å¤â¤Ã¤«¤¤"< > &"¤Ê¤É¤ò"&lt; &gt; &amp;"¤Ë¤¹¤ë  ¡ã XSSÂÐºö¡©
 269                 $str = strtr($str, array_flip(get_html_translation_table(ENT_COMPAT)));
 270                 $str = htmlspecialchars($str);
 271
 272                 // Ê¸»ú¥³¡¼¥ÉÊÑ´¹
 273                 $str = mb_convert_encoding($str, SOURCE_ENCODING, 'auto');
 274
 275                 return trim($str);
 276         }
 277
 278         // ¥¿¥°³«»Ï
 279         function start_element($parser,$name,$attrs)
 280         {
 281                 if ($this->is_item)
 282                 {
 283                         $this->tag = $name;
 284                 }
 285                 else if ($name == 'ITEM')
 286                 {
 287                         $this->is_item = TRUE;
 288                 }
 289         }
 290         // ¥¿¥°½ªÎ»
 291         function end_element($parser,$name)
 292         {
 293                 if (!$this->is_item or $name != 'ITEM')
 294                 {
 295                         return;
 296                 }
 297                 $item = array_map(array(&$this,'escape'),$this->item);
 298
 299                 $this->item = array();
 300
 301                 if (array_key_exists('DC:DATE',$item))
 302                 {
 303                         $time = plugin_showrss_get_timestamp($item['DC:DATE']);
 304                 }
 305                 else if (array_key_exists('PUBDATE',$item))
 306                 {
 307                         $time = plugin_showrss_get_timestamp($item['PUBDATE']);
 308                 }
 309                 else if (array_key_exists('DESCRIPTION',$item)
 310                         and ($description = trim($item['DESCRIPTION'])) != ''
 311                         and ($time = strtotime($description)) != -1)
 312                 {
 313                         $time -= LOCALZONE;
 314                 }
 315                 else
 316                 {
 317                         $time = time() - LOCALZONE;
 318                 }
 319                 $item['_TIMESTAMP'] = $time;
 320                 $date = get_date('Y-m-d',$item['_TIMESTAMP']);
 321
 322                 $this->items[$date][] = $item;
 323                 $this->is_item = FALSE;
 324         }
 325         // ¥¥ã¥é¥¯¥¿
 326         function character_data($parser,$data)
 327         {
 328                 if (!$this->is_item)
 329                 {
 330                         return;
 331                 }
 332                 if (!array_key_exists($this->tag,$this->item))
 333                 {
 334                         $this->item[$this->tag] = '';
 335                 }
 336                 $this->item[$this->tag] .= $data;
 337         }
 338 }
 339 function plugin_showrss_get_timestamp($str)
 340 {
 341         if (($str = trim($str)) == '')
 342         {
 343                 return UTIME;
 344         }
 345         if (!preg_match('/(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2}:\d{2})(([+-])(\d{2}):(\d{2}))?/',$str,$matches))
 346         {
 347                 $time = strtotime($str);
 348                 return ($time == -1) ? UTIME : $time - LOCALZONE;
 349         }
 350         $str = $matches[1];
 351         $time = strtotime($matches[1].' '.$matches[2]);
 352         if (!empty($matches[3]))
 353         {
 354                 $diff = ($matches[5]*60+$matches[6])*60;
 355                 $time += ($matches[4] == '-' ? $diff : -$diff);
 356         }
 357         return $time;
 358 }
 359 ?>