plugin/showrss.inc.php

   1 <?php
   2 /////////////////////////////////////////////////
   3 // PukiWiki - Yet another WikiWikiWeb clone.
   4 //
   5 // $Id: showrss.inc.php,v 1.11 2003/12/03 12:30:02 arino Exp $
   6 //
   7 // modified by PANDA <panda@arino.jp>
   8 //
   9
  10 /**
  11  *
  12  * showrss ¥×¥é¥°¥¤¥ó
  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  * mbstring ¤â¤¢¤ë¤Û¤¦¤¬¤¤¤¤¤Ç¤¹¡£
  23  *
  24  * ¤Ê¤¤¾ì¹ç¤Ï¡¢ jcode.phps ¤ò¤Á¤ç¤³¤Ã¤È¤¤¤¸¤Ã¤Æ mb_convert_encoding ¤È¤¤¤¦´Ø¿ô¤òÀë¸À¤·¤Æ¤ª¤±¤Ð¤È¤ê¤¢¤¨¤º¤½¤ì¤Ã¤Ý¤¯ÊÑ´¹¤Ç¤¤ë¤«¤â¤Ç¤¹¡£
  25  * http://www.spencernetwork.org/
  26  *
  27  * ¤´Ï¢ÍíÀè:
  28  * do3ob wiki   ->   http://do3ob.com/
  29  * email        ->   hiro_do3ob@yahoo.co.jp
  30  *
  31  * ÈòÆñ½ê       ->   http://do3ob.s20.xrea.com/
  32  *
  33  * version: Id:showrss.inc.php,v 1.40 2003/03/18 11:52:58 hiro Exp
  34  *
  35  */
  36
  37 // showrss¥×¥é¥°¥¤¥ó¤¬»ÈÍÑ²ÄÇ½¤«¤É¤¦¤«¤òÉ½¼¨
  38 function plugin_showrss_action()
  39 {
  40         $xml_extension = extension_loaded('xml');
  41         $mbstring_extension = extension_loaded('mbstring');
  42
  43         $xml_msg      = $xml_extension      ? 'xml extension is loaded' : 'COLOR(RED){xml extension is not loaded}';
  44         $mbstring_msg = $mbstring_extension ? 'mbstring extension is loaded' : 'COLOR(RED){mbstring extension is not loaded}';
  45
  46         $showrss_info = '';
  47         $showrss_info .= "| xml parser | $xml_msg |\n";
  48         $showrss_info .= "| multibyte | $mbstring_msg |\n";
  49
  50         return array('msg' => 'showrss_info', 'body' => convert_html($showrss_info));
  51 }
  52
  53 function plugin_showrss_convert()
  54 {
  55         if (func_num_args() == 0)
  56         {
  57                 // °ú¿ô¤¬¤Ê¤¤¾ì¹ç¤Ï¥¨¥é¡¼
  58                 return "<p>showrss: no parameter(s).</p>\n";
  59         }
  60         if (!extension_loaded('xml'))
  61         {
  62                 // xml ³ÈÄ¥µ¡Ç½¤¬Í¸ú¤Ç¤Ê¤¤¾ì¹ç¡£
  63                 return "<p>showrss: xml extension is not loaded</p>\n";
  64         }
  65
  66         $array = func_get_args();
  67         $rssurl = $tmplname = $usecache = $usetimestamp = '';
  68
  69         switch (func_num_args())
  70         {
  71                 case 4:
  72                         $usetimestamp = trim($array[3]);
  73                 case 3:
  74                         $usecache = $array[2];
  75                 case 2:
  76                         $tmplname = strtolower(trim($array[1]));
  77                 case 1:
  78                         $rssurl = trim($array[0]);
  79         }
  80
  81         // RSS ¥Ñ¥¹¤ÎÃÍ¥Á¥§¥Ã¥¯
  82         if (!is_url($rssurl))
  83         {
  84                 return '<p>showrss: syntax error. '.htmlspecialchars($rssurl)."</p>\n";
  85         }
  86
  87         $class = "ShowRSS_html_$tmplname";
  88         if (!class_exists($class))
  89         {
  90                 $class = 'ShowRSS_html';
  91         }
  92
  93         list($rss,$time) = plugin_showrss_get_rss($rssurl,$usecache);
  94         if ($rss === FALSE)
  95         {
  96                 return "<p>showrss: cannot get rss from server.</p>\n";
  97         }
  98
  99         $obj = new $class($rss);
 100
 101         $timestamp = '';
 102         if ($usetimestamp > 0)
 103         {
 104                 $time = get_date('Y/m/d H:i:s',$time);
 105                 $timestamp = "<p style=\"font-size:10px; font-weight:bold\">Last-Modified:$time</p>";
 106         }
 107         return $obj->toString($timestamp);
 108 }
 109 // rssÇÛÎó¤«¤éhtml¤òºî¤ë
 110 class ShowRSS_html
 111 {
 112         var $items = array();
 113         var $class = '';
 114
 115         function ShowRSS_html($rss)
 116         {
 117                 foreach ($rss as $date=>$items)
 118                 {
 119                         foreach ($items as $item)
 120                         {
 121                                 $link = $item['LINK'];
 122                                 $title = $item['TITLE'];
 123                                 $passage = get_passage($item['_TIMESTAMP']);
 124                                 $link = "<a href=\"$link\" title=\"$title $passage\">$title</a>";
 125                                 $this->items[$date][] = $this->format_link($link);
 126                         }
 127                 }
 128         }
 129         function format_link($link)
 130         {
 131                 return "$link<br />\n";
 132         }
 133         function format_list($date,$str)
 134         {
 135                 return $str;
 136         }
 137         function format_body($str)
 138         {
 139                 return $str;
 140         }
 141         function toString($timestamp)
 142         {
 143                 $retval = '';
 144                 foreach ($this->items as $date=>$items)
 145                 {
 146                         $retval .= $this->format_list($date,join('',$items));
 147                 }
 148                 $retval = $this->format_body($retval);
 149                 return <<<EOD
 150 <div{$this->class}>
 151 $retval$timestamp
 152 </div>
 153 EOD;
 154         }
 155 }
 156 class ShowRSS_html_menubar extends ShowRSS_html
 157 {
 158         var $class = ' class="small"';
 159
 160         function format_link($link)
 161         {
 162                 return "<li>$link</li>\n";
 163         }
 164         function format_body($str)
 165         {
 166                 return "<ul class=\"recent_list\">\n$str</ul>\n";
 167         }
 168 }
 169 class ShowRSS_html_recent extends ShowRSS_html
 170 {
 171         var $class = ' class="small"';
 172
 173         function format_link($link)
 174         {
 175                 return "<li>$link</li>\n";
 176         }
 177         function format_list($date,$str)
 178         {
 179                 return "<strong>$date</strong>\n<ul class=\"recent_list\">\n$str</ul>\n";
 180         }
 181 }
 182 // rss¤ò¼èÆÀ¤¹¤ë
 183 function plugin_showrss_get_rss($target,$usecache)
 184 {
 185         $buf = '';
 186         $time = NULL;
 187         if ($usecache)
 188         {
 189                 // ´ü¸ÂÀÚ¤ì¤Î¥¥ã¥Ã¥·¥å¤ò¥¯¥ê¥¢
 190                 plugin_showrss_cache_expire($usecache);
 191
 192                 // ¥¥ã¥Ã¥·¥å¤¬¤¢¤ì¤Ð¼èÆÀ¤¹¤ë
 193                 $filename = CACHE_DIR . encode($target) . '.tmp';
 194                 if (is_readable($filename))
 195                 {
 196                         $buf = join('',file($filename));
 197                         $time = filemtime($filename) - LOCALZONE;
 198                 }
 199         }
 200         if ($time === NULL)
 201         {
 202                 // rssËÜÂÎ¤ò¼èÆÀ
 203                 $data = http_request($target);
 204                 if ($data['rc'] !== 200)
 205                 {
 206                         return array(FALSE,0);
 207                 }
 208                 $buf = $data['data'];
 209                 $time = UTIME;
 210                 // ¥¥ã¥Ã¥·¥å¤òÊÝÂ¸
 211                 if ($usecache)
 212                 {
 213                         $fp = fopen($filename, 'w');
 214                         fwrite($fp,$buf);
 215                         fclose($fp);
 216                 }
 217         }
 218
 219         // parse
 220         $obj = new ShowRSS_XML();
 221         return array($obj->parse($buf),$time);
 222 }
 223 // ´ü¸ÂÀÚ¤ì¤Î¥¥ã¥Ã¥·¥å¤ò¥¯¥ê¥¢
 224 function plugin_showrss_cache_expire($usecache)
 225 {
 226         $expire = $usecache * 60 * 60; // Hour
 227
 228         $dh = dir(CACHE_DIR);
 229         while (($file = $dh->read()) !== FALSE)
 230         {
 231                 if (substr($file,-4) != '.tmp')
 232                 {
 233                         continue;
 234                 }
 235                 $file = CACHE_DIR.$file;
 236                 $last = time() - filemtime($file);
 237
 238                 if ($last > $expire)
 239                 {
 240                         unlink($file);
 241                 }
 242         }
 243         $dh->close();
 244 }
 245 // rss¤ò¼èÆÀ¡¦ÇÛÎó²½
 246 class ShowRSS_XML
 247 {
 248         var $items;
 249         var $item;
 250         var $is_item;
 251         var $tag;
 252
 253         function parse($buf)
 254         {
 255                 // ½é´ü²½
 256                 $this->items = array();
 257                 $this->item = array();
 258                 $this->is_item = FALSE;
 259                 $this->tag = '';
 260
 261                 $xml_parser = xml_parser_create();
 262                 xml_set_element_handler($xml_parser,array(&$this,'start_element'),array(&$this,'end_element'));
 263                 xml_set_character_data_handler($xml_parser,array(&$this,'character_data'));
 264
 265                 if (!xml_parse($xml_parser,$buf,1))
 266                 {
 267                         return(sprintf('XML error: %s at line %d in %s',
 268                                 xml_error_string(xml_get_error_code($xml_parser)),
 269                                 xml_get_current_line_number($xml_parser),$buf));
 270                 }
 271                 xml_parser_free($xml_parser);
 272
 273                 return $this->items;
 274         }
 275         function escape($str)
 276         {
 277                 // RSSÃæ¤Î "&lt; &gt; &amp;" ¤Ê¤É¤ò °ìÃ¶ "< > &" ¤ËÌá¤·¡¢ ¡ã "&amp;" ¤¬ "&amp;amp;" ¤Ë¤Ê¤Ã¤Á¤ã¤¦¤ÎÂÐºö
 278                 // ¤½¤Î¸å¤â¤Ã¤«¤¤"< > &"¤Ê¤É¤ò"&lt; &gt; &amp;"¤Ë¤¹¤ë  ¡ã XSSÂÐºö¡©
 279                 $str = strtr($str, array_flip(get_html_translation_table(ENT_COMPAT)));
 280                 $str = htmlspecialchars($str);
 281
 282                 // Ê¸»ú¥³¡¼¥ÉÊÑ´¹
 283                 $str = mb_convert_encoding($str, SOURCE_ENCODING, 'auto');
 284
 285                 return trim($str);
 286         }
 287
 288         // ¥¿¥°³«»Ï
 289         function start_element($parser,$name,$attrs)
 290         {
 291                 if ($this->is_item)
 292                 {
 293                         $this->tag = $name;
 294                 }
 295                 else if ($name == 'ITEM')
 296                 {
 297                         $this->is_item = TRUE;
 298                 }
 299         }
 300         // ¥¿¥°½ªÎ»
 301         function end_element($parser,$name)
 302         {
 303                 if (!$this->is_item or $name != 'ITEM')
 304                 {
 305                         return;
 306                 }
 307                 $item = array_map(array(&$this,'escape'),$this->item);
 308
 309                 $this->item = array();
 310
 311                 if (array_key_exists('DC:DATE',$item))
 312                 {
 313                         $time = plugin_showrss_get_timestamp($item['DC:DATE']);
 314                 }
 315                 else if (array_key_exists('PUBDATE',$item))
 316                 {
 317                         $time = plugin_showrss_get_timestamp($item['PUBDATE']);
 318                 }
 319                 else if (array_key_exists('DESCRIPTION',$item)
 320                         and ($description = trim($item['DESCRIPTION'])) != ''
 321                         and ($time = strtotime($description)) != -1)
 322                 {
 323                         $time -= LOCALZONE;
 324                 }
 325                 else
 326                 {
 327                         $time = time() - LOCALZONE;
 328                 }
 329                 $item['_TIMESTAMP'] = $time;
 330                 $date = get_date('Y-m-d',$item['_TIMESTAMP']);
 331
 332                 $this->items[$date][] = $item;
 333                 $this->is_item = FALSE;
 334         }
 335         // ¥¥ã¥é¥¯¥¿
 336         function character_data($parser,$data)
 337         {
 338                 if (!$this->is_item)
 339                 {
 340                         return;
 341                 }
 342                 if (!array_key_exists($this->tag,$this->item))
 343                 {
 344                         $this->item[$this->tag] = '';
 345                 }
 346                 $this->item[$this->tag] .= $data;
 347         }
 348 }
 349 function plugin_showrss_get_timestamp($str)
 350 {
 351         if (($str = trim($str)) == '')
 352         {
 353                 return UTIME;
 354         }
 355         if (!preg_match('/(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2}:\d{2})(([+-])(\d{2}):(\d{2}))?/',$str,$matches))
 356         {
 357                 $time = strtotime($str);
 358                 return ($time == -1) ? UTIME : $time - LOCALZONE;
 359         }
 360         $str = $matches[1];
 361         $time = strtotime($matches[1].' '.$matches[2]);
 362         if (!empty($matches[3]))
 363         {
 364                 $diff = ($matches[5]*60+$matches[6])*60;
 365                 $time += ($matches[4] == '-' ? $diff : -$diff);
 366         }
 367         return $time;
 368 }
 369 ?>