2 // PukiWiki - Yet another WikiWikiWeb clone
5 // 2002-2016 PukiWiki Development Team
6 // 2002 PANDA <panda@arino.jp>
7 // (Original)hiro_do3ob@yahoo.co.jp
8 // License: GPL, same as PukiWiki
10 // Show RSS (of remote site) plugin
12 // * This plugin needs 'PHP xml extension'
13 // * Cache data will be stored as CACHE_DIR/*.tmp
15 define('PLUGIN_SHOWRSS_USAGE', '#showrss(URI-to-RSS[,default|menubar|recent[,Cache-lifetime[,Show-timestamp]]])');
17 // Show related extensions are found or not
18 function plugin_showrss_action()
20 if (PKWK_SAFE_MODE) die_message('PKWK_SAFE_MODE prohibit this');
23 foreach(array('xml', 'mbstring') as $extension){
24 $$extension = extension_loaded($extension) ?
25 '&color(green){Found};' :
26 '&color(red){Not found};';
27 $body .= '| ' . $extension . ' extension | ' . $$extension . ' |' . "\n";
29 return array('msg' => 'showrss_info', 'body' => convert_html($body));
32 function plugin_showrss_convert()
36 if (! isset($_xml)) $_xml = extension_loaded('xml');
37 if (! $_xml) return '#showrss: xml extension is not found<br />' . "\n";
39 $num = func_num_args();
40 if ($num == 0) return PLUGIN_SHOWRSS_USAGE . '<br />' . "\n";
42 $argv = func_get_args();
45 $template = $uri = '';
47 case 4: $timestamp = (trim($argv[3]) == '1'); /*FALLTHROUGH*/
48 case 3: $cachehour = trim($argv[2]); /*FALLTHROUGH*/
49 case 2: $template = strtolower(trim($argv[1]));/*FALLTHROUGH*/
50 case 1: $uri = trim($argv[0]);
53 $class = ($template == '' || $template == 'default') ? 'ShowRSS_html' : 'ShowRSS_html_' . $template;
54 if (! is_numeric($cachehour))
55 return '#showrss: Cache-lifetime seems not numeric: ' . htmlsc($cachehour) . '<br />' . "\n";
56 if (! class_exists($class))
57 return '#showrss: Template not found: ' . htmlsc($template) . '<br />' . "\n";
59 return '#showrss: Seems not URI: ' . htmlsc($uri) . '<br />' . "\n";
61 list($rss, $time) = plugin_showrss_get_rss($uri, $cachehour);
62 if ($rss === FALSE) return '#showrss: Failed fetching RSS from the server<br />' . "\n";
66 $time = '<p style="font-size:10px; font-weight:bold">Last-Modified:' .
67 get_date('Y/m/d H:i:s', $time) . '</p>';
70 $obj = new $class($rss);
71 return $obj->toString($time);
74 // Create HTML from RSS array()
80 function ShowRSS_html($rss)
82 $this->__construct($rss);
84 function __construct($rss)
86 foreach ($rss as $date=>$items) {
87 foreach ($items as $item) {
88 $link = $item['LINK'];
89 $title = $item['TITLE'];
90 $passage = get_passage($item['_TIMESTAMP']);
91 $link = '<a href="' . $link . '" title="' . $title . ' ' .
92 $passage . '" rel="nofollow">' . $title . '</a>';
93 $this->items[$date][] = $this->format_link($link);
98 function format_link($link)
100 return $link . '<br />' . "\n";
103 function format_list($date, $str)
108 function format_body($str)
113 function toString($timestamp)
116 foreach ($this->items as $date=>$items)
117 $retval .= $this->format_list($date, join('', $items));
118 $retval = $this->format_body($retval);
127 class ShowRSS_html_menubar extends ShowRSS_html
129 var $class = ' class="small"';
131 function format_link($link) {
132 return '<li>' . $link . '</li>' . "\n";
135 function format_body($str) {
136 return '<ul class="recent_list">' . "\n" . $str . '</ul>' . "\n";
140 class ShowRSS_html_recent extends ShowRSS_html
142 var $class = ' class="small"';
144 function format_link($link) {
145 return '<li>' . $link . '</li>' . "\n";
148 function format_list($date, $str) {
149 return '<strong>' . $date . '</strong>' . "\n" .
150 '<ul class="recent_list">' . "\n" . $str . '</ul>' . "\n";
155 function plugin_showrss_get_rss($target, $cachehour)
160 // Remove expired cache
161 plugin_showrss_cache_expire($cachehour);
163 // Get the cache not expired
164 $filename = CACHE_DIR . encode($target) . '.tmp';
165 if (is_readable($filename)) {
166 $buf = join('', file($filename));
167 $time = filemtime($filename) - LOCALZONE;
171 if ($time === NULL) {
173 $data = pkwk_http_request($target);
174 if ($data['rc'] !== 200)
175 return array(FALSE, 0);
177 $buf = $data['data'];
180 // Save RSS into cache
182 $fp = fopen($filename, 'w');
189 $obj = new ShowRSS_XML();
190 return array($obj->parse($buf),$time);
193 // Remove cache if expired limit exeed
194 function plugin_showrss_cache_expire($cachehour)
196 $expire = $cachehour * 60 * 60; // Hour
197 $dh = dir(CACHE_DIR);
198 while (($file = $dh->read()) !== FALSE) {
199 if (substr($file, -4) != '.tmp') continue;
200 $file = CACHE_DIR . $file;
201 $last = time() - filemtime($file);
202 if ($last > $expire) unlink($file);
207 // Get RSS and array() them
218 $this->items = array();
219 $this->item = array();
220 $this->is_item = FALSE;
225 if(preg_match('/<\?xml [^>]*\bencoding="([a-z0-9-_]+)"/i', $buf, $matches)) {
226 $this->encoding = $matches[1];
228 $this->encoding = mb_detect_encoding($buf);
231 // Normalize to UTF-8 / ASCII
232 if (! in_array(strtolower($this->encoding), array('us-ascii', 'iso-8859-1', 'utf-8'))) {
233 $buf = mb_convert_encoding($buf, 'utf-8', $this->encoding);
234 $this->encoding = 'utf-8';
238 $xml_parser = xml_parser_create($this->encoding);
239 xml_set_element_handler($xml_parser, array(& $this, 'start_element'), array(& $this, 'end_element'));
240 xml_set_character_data_handler($xml_parser, array(& $this, 'character_data'));
241 if (! xml_parse($xml_parser, $buf, 1)) {
242 return(sprintf('XML error: %s at line %d in %s',
243 xml_error_string(xml_get_error_code($xml_parser)),
244 xml_get_current_line_number($xml_parser), $buf));
246 xml_parser_free($xml_parser);
251 function escape($str)
253 // Unescape already-escaped chars (<, >, &, ...) in RSS body before htmlsc()
254 $str = strtr($str, array_flip(get_html_translation_table(ENT_COMPAT)));
257 // Encoding conversion
258 $str = mb_convert_encoding($str, SOURCE_ENCODING, $this->encoding);
263 function start_element($parser, $name, $attrs)
265 if ($this->is_item) {
267 } else if ($name == 'ITEM') {
268 $this->is_item = TRUE;
273 function end_element($parser, $name)
275 if (! $this->is_item || $name != 'ITEM') return;
277 $item = array_map(array(& $this, 'escape'), $this->item);
278 $this->item = array();
280 if (isset($item['DC:DATE'])) {
281 $time = plugin_showrss_get_timestamp($item['DC:DATE']);
283 } else if (isset($item['PUBDATE'])) {
284 $time = plugin_showrss_get_timestamp($item['PUBDATE']);
286 } else if (isset($item['DESCRIPTION']) &&
287 ($description = trim($item['DESCRIPTION'])) != '' &&
288 ($time = strtotime($description)) != -1) {
292 $time = time() - LOCALZONE;
294 $item['_TIMESTAMP'] = $time;
295 $date = get_date('Y-m-d', $item['_TIMESTAMP']);
297 $this->items[$date][] = $item;
298 $this->is_item = FALSE;
301 function character_data($parser, $data)
303 if (! $this->is_item) return;
304 if (! isset($this->item[$this->tag])) $this->item[$this->tag] = '';
305 $this->item[$this->tag] .= $data;
309 function plugin_showrss_get_timestamp($str)
312 if ($str == '') return UTIME;
315 if (preg_match('/(\d{4}-\d{2}-\d{2})T(\d{2}:\d{2}:\d{2})(([+-])(\d{2}):(\d{2}))?/', $str, $matches)) {
316 $time = strtotime($matches[1] . ' ' . $matches[2]);
319 } else if ($matches[3]) {
320 $diff = ($matches[5] * 60 + $matches[6]) * 60;
321 $time += ($matches[4] == '-' ? $diff : -$diff);
325 $time = strtotime($str);
326 return ($time == -1) ? UTIME : $time - LOCALZONE;