lib/display.php

   1 <?php
   2 // display.php: fetch page or get default content
   3 // calls transform.php for actual transformation of wiki markup to HTML
   4 rcs_id('$Id: display.php,v 1.18 2002-01-25 01:04:13 dairiki Exp $');
   5
   6 require_once('lib/Template.php');
   7 require_once('lib/transform.php');
   8
   9 /**
  10  * Guess a short description of the page.
  11  *
  12  * Algorithm:
  13  *
  14  * This algorithm was suggested on MeatballWiki by
  15  * Alex Schroeder <kensanata@yahoo.com>.
  16  *
  17  * Use the first paragraph in the page which contains at least two
  18  * sentences.
  19  *
  20  * @see http://www.usemod.com/cgi-bin/mb.pl?MeatballWikiSuggestions
  21  */
  22 function GleanDescription ($rev) {
  23     $two_sentences
  24         = pcre_fix_posix_classes("/[.?!]\s+[[:upper:])]"
  25                                  . ".*"
  26                                  . "[.?!]\s*([[:upper:])]|$)/sx");
  27
  28     $content = $rev->getPackedContent();
  29
  30     // Iterate through paragraphs.
  31     while (preg_match('/(?: ^ \w .* $ \n? )+/mx', $content, $m)) {
  32         $paragraph = $m[0];
  33
  34         // Return paragraph if it contains at least two sentences.
  35         if (preg_match($two_sentences, $paragraph)) {
  36             return preg_replace("/\s*\n\s*/", " ", trim($paragraph));
  37         }
  38
  39         $content = substr(strstr($content, $paragraph), strlen($paragraph));
  40     }
  41     return '';
  42 }
  43
  44
  45 function displayPage(&$request, $tmpl = 'browse') {
  46     $pagename = $request->getArg('pagename');
  47     $version = $request->getArg('version');
  48     $page = $request->getPage();
  49
  50
  51     if ($version) {
  52         $revision = $page->getRevision($version);
  53         if (!$revision)
  54             NoSuchRevision($request, $page, $version);
  55     }
  56     else {
  57         $revision = $page->getCurrentRevision();
  58     }
  59
  60     $splitname = split_pagename($pagename);
  61     $pagetitle = HTML::a(array('href' => WikiURL(_("BackLinks"),
  62                                                  array('page' => $pagename)),
  63                                'class' => 'backlinks'),
  64                          $splitname);
  65     $pagetitle->addTooltip(sprintf(_("BackLinks for %s"), $pagename));
  66
  67
  68     if (0) {
  69         include_once('lib/BlockParser.php');
  70         global $BlockParser;
  71         $content = $BlockParser->parse($revision->getPackedContent());
  72         //print_r($content);
  73         $template = Template($tmpl, array('CONTENT' => $content));
  74     }
  75     else
  76         $template = Template($tmpl, do_transform($revision->getContent()));
  77
  78
  79     GeneratePage($template, $pagetitle, $revision,
  80                  array('ROBOTS_META'    => 'index,follow',
  81                        'PAGE_DESCRIPTION' => GleanDescription($revision)));
  82     flush();
  83     $page->increaseHitCount();
  84 }
  85
  86 // For emacs users
  87 // Local Variables:
  88 // mode: php
  89 // tab-width: 8
  90 // c-basic-offset: 4
  91 // c-hanging-comment-ender-p: nil
  92 // indent-tabs-mode: nil
  93 // End:
  94
  95 ?>