XHTMLCompiler/DOMFilter/RSSFromSVN.php

   1 <?php
   2
   3 /**
   4  * Generates an RSS feed from a page's associated SVN log
   5  * @deprecated
   6  */
   7 class XHTMLCompiler_DOMFilter_RSSFromSVN extends XHTMLCompiler_DOMFilter
   8 {
   9
  10     protected $name = 'RSSFromSVN';
  11
  12     /**
  13      * Number of log entries to display
  14      */
  15     protected $limit = 10;
  16
  17     /**
  18      * Description of changelog to place in RSS feed title
  19      */
  20     protected $description = 'Subversion changelog for %s';
  21
  22     /**
  23      * Compact title to place in <link> and other places
  24      */
  25     protected $title = 'Changelog for %s';
  26
  27     protected $xcAttr = array('rss-from-svn');
  28
  29     public function process(DOMDocument $dom, $page, $manager) {
  30
  31         $xc = XHTMLCompiler::getInstance();
  32         $viewvc_url = $xc->getConf('viewvc_url');
  33
  34         // see if we need to make the link ourself
  35         $trigger = $this->confiscateAttr($dom->documentElement, $this->ns, 'rss-from-svn');
  36         if ($trigger == 'yes') {
  37             // alright, set it up ourselves
  38             $link = $dom->createElement('link');
  39             $link->setAttribute('rel', 'alternate');
  40             $link->setAttribute('type', 'application/rss+xml');
  41             $link->setAttribute('title', str_replace('%s', $page->getCachePath(), $this->title));
  42             $link->setAttribute('href', $page->getPathStem() . '.rss');
  43             $head = $this->query('//html:head')->item(0);
  44             $head->appendChild($link);
  45         } else {
  46             // grab the document's links to RSS feeds
  47             // link must be marked with xc:rss-from-svn
  48             // only one allowed
  49             $link = $this->query('//html:link[@xc:rss-from-svn]')->item(0);
  50             if (!$link) return; // nothing to do
  51
  52             $trigger = $this->confiscateAttr($link, $this->ns, 'rss-from-svn');
  53             if ($trigger != 'yes') return;
  54         }
  55
  56         $path = $page->getWebPath();
  57
  58         $rss = new XHTMLCompiler_RSSFeed(
  59             $link->getAttribute('title'),
  60             $path,
  61             str_replace('%s', $page->getCachePath(), $this->description),
  62             $dom->documentElement->getAttribute('xml:lang')
  63         );
  64
  65         // must be accessible by this script, but not necessarily the
  66         // general public
  67         $url = $page->getSVNHeadURLMunged();
  68
  69         if (!$url) {
  70             // file is not versioned, fail silently: it might work later
  71             return;
  72         }
  73
  74         // Extension not enabled, fail silently
  75         if (!function_exists('svn_log')) return;
  76         $logs = svn_log_limit($url, $this->limit, $page);
  77
  78         $page_link = $page->getWebPath();
  79
  80         date_default_timezone_set('UTC');
  81         foreach ($logs as $log) {
  82             // link to ViewVC snapshot if possible
  83             if ($viewvc_url) {
  84                 $item_link = $viewvc_url . '/' . $page->getSourcePath() .
  85                     '?r1=' . ($log['rev'] - 1) . '&r2=' . $log['rev'];
  86             } else {
  87                 $item_link = $page_link . '#svn_r' . $log['rev'];
  88             }
  89             // generate short message (first line) for title
  90             $lines = explode("\n", wordwrap($log['msg'], 40));
  91             $short_msg = $lines[0];
  92
  93             $rss->addItem(
  94                 $item_link,
  95                 'Revision ' . $log['rev'] . ': ' . htmlspecialchars($short_msg),
  96                 $d = gmdate('r', strtotime($log['date'])),
  97                 htmlspecialchars($log['msg'])
  98             );
  99         }
 100
 101         $rss->save(
 102             $page->normalizePath(
 103                 $link->getAttribute('href')
 104             )
 105         );
 106
 107     }
 108
 109 }
 110
 111 ?>