XHTMLCompiler/DOMFilter/News.php

   1 <?php
   2
   3 /**
   4  * Mini blog-style filter for globbing contents of another directory
   5  * and inserting summaries into a main page.
   6  * @note This filter should be run before other "cosmetic" filters, as
   7  *       it makes major changes to page content and may pull data from
   8  *       sources that have not been processed yet.
   9  */
  10 class XHTMLCompiler_DOMFilter_News extends XHTMLCompiler_DOMFilter
  11 {
  12     protected $name = 'News';
  13     protected $prefix = 'news';
  14     public function process(DOMDocument $dom, $page, $manager) {
  15         $container = $this->query("//html:div[@news:source]")->item(0);
  16         if (!$container) return;
  17
  18         // Grab variables
  19         $source = $this->confiscateAttr($container, $this->ns, 'source');
  20         $source = $page->normalizePath($source);
  21         $limit = $this->confiscateAttr($container, $this->ns, 'limit');
  22         if (!$limit) $limit = 5;
  23         $header = $this->confiscateAttr($container, $this->ns, 'header');
  24         if (!$header) $header = 'h2';
  25
  26         // Recursively glob for source files
  27         // :TODO: add DI for this
  28         $fs = new FSTools();
  29         $result = $fs->globr($source, '*.xhtml');
  30         rsort($result);
  31
  32         // Setup manager
  33         $xc = XHTMLCompiler::getInstance();
  34         $manager = $xc->getFilterManager();
  35
  36         for ($i = $d = 0, $c = count($result); $i < $c && $d < $limit; $i++) {
  37             $entry = $result[$i];
  38
  39             // :TODO: Add support for nested directories. Also need to modify
  40             // generateId when that happens.
  41             $base = basename($entry);
  42             if (strlen($base) < 4 || !ctype_digit(substr($base, 0, 4))) {
  43                 continue;
  44             }
  45
  46             $entryFile = new XHTMLCompiler_Page($entry);
  47             // This DOM has IDs setup, but no other processing setup.
  48             $subdom = $manager->parse($entryFile->getSource(), $entryFile);
  49
  50             $entryNode = $dom->createElement('div');
  51             $entryNode->setAttribute('class', 'item');
  52
  53             // Generate ID for this entry. The format is
  54             // year-month-date-lc-title-with-dashes
  55             $entryNode->setAttribute('id', $this->generateId($entryFile->getPathStem()));
  56
  57             // Grab the title
  58             $node = $subdom->getElementsByTagName('h1')->item(0);
  59             $h1 = $dom->importNode($node, true);
  60             $hx = $dom->createElement($header);
  61             $hx->setAttribute('class', 'title');
  62             foreach ($h1->childNodes as $h1node) $hx->appendChild($h1node);
  63             $entryNode->appendChild($hx);
  64
  65             // Possible place for factoring out. Also, we can also add
  66             // a timezone to be more like ours.
  67             $dateTime = $entryFile->getCreatedTime();
  68             if ($dateTime) {
  69                 $time = $dateTime->format('g:i A e');
  70                 $date = $dateTime->format('l, F j, Y');
  71                 $dateNode = $dom->createElement('div');
  72                 $dateNode->setAttribute('class', 'date');
  73                 $abbrNode = $dom->createElement('abbr');
  74                 $abbrNode->setAttribute('class', 'at' . $dateTime->format('U'));
  75                 $dateText = $dom->createTextNode("Posted $time on $date");
  76                 $abbrNode->appendChild($dateText);
  77                 $dateNode->appendChild($abbrNode);
  78                 $entryNode->appendChild($dateNode);
  79             }
  80
  81             // Grab the content
  82             // :WARNING: This code apparently leaves behind an
  83             // xmlns statement, although we're not quite sure why.
  84             $node = $subdom->getElementById('content');
  85             $node = $dom->importNode($node, true);
  86             $this->confiscateAttr($node, 'id');
  87             $node->setAttribute('class', 'body');
  88             $entryNode->appendChild($node);
  89
  90             // Make permalink
  91             $permalink = $dom->createElement('div');
  92             $permalink->setAttribute('class', 'permalink');
  93             $a = $dom->createElement('a');
  94             $a->setAttribute('href', $entryFile->getAbsolutePath());
  95             $a->appendChild($dom->createTextNode('Permalink'));
  96             $permalink->appendChild($a);
  97             $entryNode->appendChild($permalink);
  98
  99             $container->appendChild($entryNode);
 100
 101             // increment one successful
 102             $d++;
 103         }
 104     }
 105
 106     /**
 107      * Generates an ID based on the filename of a blog entry
 108      */
 109     public function generateId($entry) {
 110         $parts = array_slice(explode('/', $entry), -2);
 111         // A very specific format: year/monthday-entry-name, like 2008/0131-foobar
 112         // Arbitrary folders before that is ok.
 113         $entry = 'entry-' . $parts[0] .
 114             '-' . substr($parts[1], 0, 2) .
 115             '-' . substr($parts[1], 2, 2) .
 116             '-' . substr($parts[1], 5);
 117         return $entry;
 118     }
 119
 120 }