Peter's Blog

Redefining the Impossible

Gregarius Highlighter

Gregarius Highlighter

Submitted by Peter on Thu Nov 24 2005 15:26 over 3 years ago

I couldn't resist, here is an incredibly complex Gregarius plugin to highlight certain keywords in an rss article. There's no user interface to specify keywords, you have to edit this file. Store this in your Gregarius plugins folder and enable it in the admin. 

   1  
   2  <?php
   3  
   4  /// Name: Keyword Highlighter
   5  /// Author: Peter Wilkinson
   6  /// Description: Highlight certain words in feeds
   7  /// Version: 0.0
   8  function __HighlightStuff( $in)
   9  {
  10      $output = preg_replace('/\b(python|django)\b/i', '<span style="color:red;font-size: larger">\\1</span>', $in);
  11  
  12      return $output;
  13  }
  14  
  15  rss_set_hook('rss.plugins.import.description','__HighlightStuff');
  16  ?>

This will highlight the words 'python' and 'django'. More words can be added between the brackets, separated by | characters.

Filed under: gregarius

Peter Says:

Thu Nov 24 2005 20:03 over 3 years ago

This does break if the keywords are found in urls in anchor tags... needs some more regular expression study.

Peter

Marco Says:

Fri Nov 25 2005 18:23 over 3 years ago

Good work! Feel free to submit your plugin to the repository (plugins.gregarius.net) when you think the world is ready for it! :)

Peter Says:

Fri Nov 25 2005 19:29 over 3 years ago

Here is mk 2. It uses a lookbehind assertion in an attempt to see if the keyword is within an url, in which case it should not get tampered with. 

   1  /// Name: Keyword Highlighter
   2  /// Author: Peter Wilkinson
   3  /// Description: Highlight certain words in feeds
   4  /// Version: 0.0
   5  function __HighlightStuff( $in)
   6  {
   7      $output = preg_replace('/(?<![/"\'?.-])\b(python|django)\b/i', '<span style="color:red;font-size: larger">\\1</span>', $in);
   8  
   9      return $output;
  10  }
  11  
  12  rss_set_hook('rss.plugins.import.description','__HighlightStuff');
  13  
  14  ?>

Peter

Peter Says:

Fri Nov 25 2005 19:31 over 3 years ago

I'll test it some more but I'm not sure whether the world would prefer it to have a user interface for defining the keywords.

Peter

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