XHTMLCompiler/DOMFilter/RSSFromSVN.php

   1 <?php
   2
   3 class XHTMLCompiler_DOMFilter_RSSFromSVN extends XHTMLCompiler_DOMFilter
   4 {
   5
   6     protected $name = 'RSSFromSVN';
   7     protected $limit = 10;
   8
   9     protected $description = 'Subversion changelog for %s';
  10
  11     // xc:rss-from-svn="yes" on meta element to activate this feature
  12
  13     public function process(DOMDocument $dom, $page, $manager) {
  14
  15         $xc = XHTMLCompiler::getInstance();
  16         $viewvc_url = $xc->getConf('viewvc_url');
  17
  18         // grab the document's links to RSS feeds
  19         // link must be marked with xc:rss-from-svn
  20         // only one allowed
  21         $link = $this->query('//html:link[@xc:rss-from-svn]')->item(0);
  22
  23         if (!$link) return; // nothing to do
  24
  25         if (!function_exists('svn_log')) {
  26             throw new Exception('RSSFromSVN requires the svn extension');
  27         }
  28
  29         $trigger = $this->confiscateAttr($link, $this->ns, 'rss-from-svn');
  30         if ($trigger != 'yes') return;
  31
  32         $path       = $page->getWebPath();
  33
  34         $rss = new XHTMLCompiler_RSSFeed(
  35             $link->getAttribute('title'),
  36             $path,
  37             str_replace('%s', $page->getCachePath(), $this->description),
  38             $dom->documentElement->getAttribute('xml:lang')
  39         );
  40
  41         $url = $page->getSVNHeadURL();
  42         if (!$url) {
  43             // file is not versioned, fail silently: it might work later
  44             return;
  45         }
  46
  47         $logs = svn_log_limit($url, $this->limit, $page);
  48
  49         $page_link = $page->getWebPath();
  50
  51         date_default_timezone_set('UTC');
  52         foreach ($logs as $log) {
  53             // link to ViewVC snapshot if possible
  54             if ($viewvc_url) {
  55                 $item_link = $viewvc_url . '/' . $page->getSourcePath() .
  56                     '?revision=' . $log['rev'] . '&view=markup';
  57             } else {
  58                 $item_link = $page_link . '#svn_r' . $log['rev'];
  59             }
  60             // generate short message (first line) for title
  61             $lines = explode("\n", wordwrap($log['msg'], 40));
  62             $short_msg = $lines[0];
  63
  64             $rss->addItem(
  65                 $item_link,
  66                 'Revision ' . $log['rev'] . ': ' . htmlspecialchars($short_msg),
  67                 $d = gmdate('r', strtotime($log['date'])),
  68                 htmlspecialchars($log['msg'])
  69             );
  70         }
  71
  72         $rss->save(
  73             $page->normalizePath(
  74                 $link->getAttribute('href')
  75             )
  76         );
  77
  78     }
  79
  80 }
  81
  82 ?>