plugins/SpecialRecentChanges.php
author Dan
Sun, 30 Mar 2008 07:24:48 -0700
changeset 514 ecbfb747743e
parent 504 bc8e0e9ee01d
child 519 94214ec0871c
permissions -rw-r--r--
Added debugging switch to $lang->import() for help with optimization
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<?php
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/*
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Plugin Name: plugin_specialrecentchanges_title
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Plugin URI: http://enanocms.org/
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Description: plugin_specialrecentchanges_desc
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Author: Dan Fuhry
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Version: 1.1.3
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Author URI: http://enanocms.org/
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*/
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/*
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 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
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 * Version 1.1.3 (Caoineag alpha 3)
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 * Copyright (C) 2006-2007 Dan Fuhry
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 *
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 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
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 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
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 *
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 * This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
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 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
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 */
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global $db, $session, $paths, $template, $plugins; // Common objects
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$plugins->attachHook('session_started', '
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  global $paths;
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    $paths->add_page(Array(
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      \'name\'=>\'specialpage_recent_changes\',
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      \'urlname\'=>\'RecentChanges\',
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      \'namespace\'=>\'Special\',
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      \'special\'=>0,\'visible\'=>1,\'comments_on\'=>0,\'protected\'=>1,\'delvotes\'=>0,\'delvote_ips\'=>\'\',
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      ));
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    ');
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function page_Special_RecentChanges()
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{
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  global $db, $session, $paths, $template, $plugins; // Common objects
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  global $lang;
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  // One super-loaded SQL query to fetch all the info we need:
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  // (theoretical)
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  //   SELECT ( CHAR_LENGTH(l1.page_text) - CHAR_LENGTH(l2.page_text) ) AS size_change, l1.author, l1.page_id, l1.namespace, l1.edit_summary,
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  //       l1.time_id AS currev_time, l2.time_id AS oldrev_time
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  //     FROM logs AS l1
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  //     LEFT JOIN logs AS l2                                                    
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  //       ON ( l1.log_type = l2.log_type AND l1.action = 'edit' AND l1.action = l2.action AND l2.time_id < l1.time_id AND l1.page_id = l2.page_id AND l1.namespace = l2.namespace )
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  //     WHERE l2.time_id IS NOT NULL
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  //     GROUP BY l1.page_id, l1.namespace
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  //     ORDER BY l2.time_id DESC, l1.time_id DESC;
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  // (the actual query is generated based on filter criteria)
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  // How it works:
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  //  * Join the logs table with itself
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  //  * Select the size_change virtual column, which is based on current_rev_length - old_rev_length
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  //  * Use GROUP BY to group rows from the same page together
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  //  * Make sure that the time_id in the second instance (l2) of enano_logs is LESS than the time_id in the first instance (l1)
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  //  * Use ORDER BY to ensure that the latest revision before current is selected
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  $where_extra = '';
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  if ( isset($_GET['filter_author']) && is_array($_GET['filter_author']) )
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  {
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    $f_author = $_GET['filter_author'];
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    foreach ( $f_author as &$author )
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    {
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      $author = $db->escape($author);
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    }
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    $f_author = "\n    AND (\n      l1.author = '" . implode("'\n      OR l1.author = '", $f_author) . "'\n    )";
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    $where_extra .= $f_author;
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  }
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  if ( ENANO_DBLAYER == 'MYSQL' )
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  {
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    $sql = 'SELECT ( CHAR_LENGTH(l1.page_text) - CHAR_LENGTH(l2.page_text) ) AS size_change, l1.author, l1.page_id, l1.namespace, l1.edit_summary,
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    l1.time_id AS currev_time, l2.time_id AS oldrev_time
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  FROM ' . table_prefix . 'logs AS l1
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  LEFT JOIN ' . table_prefix . 'logs AS l2                                                    
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    ON ( l1.log_type = l2.log_type AND l1.action = \'edit\' AND l1.action = l2.action AND l2.time_id < l1.time_id AND l1.page_id = l2.page_id AND l1.namespace = l2.namespace AND l2.is_draft != 1 )
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  WHERE l2.time_id IS NOT NULL' . $where_extra . '
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        AND l1.is_draft != 1
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  GROUP BY oldrev_time
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  ORDER BY l1.time_id DESC, l2.time_id DESC;';
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  }
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  else
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  {
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    $sql = 'SELECT DISTINCT ON (l1.time_id) ( CHAR_LENGTH(l1.page_text) - CHAR_LENGTH(l2.page_text) ) AS size_change, l1.author, l1.page_id, l1.namespace, l1.edit_summary,
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    l1.time_id AS currev_time, l2.time_id AS oldrev_time
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  FROM ' . table_prefix . 'logs AS l1
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  LEFT JOIN ' . table_prefix . 'logs AS l2                                                    
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    ON ( l1.log_type = l2.log_type AND l1.action = \'edit\' AND l1.action = l2.action AND l2.time_id < l1.time_id AND l1.page_id = l2.page_id AND l1.namespace = l2.namespace )
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  WHERE l2.time_id IS NOT NULL' . $where_extra . '
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  GROUP BY l1.time_id, l1.page_id, l1.namespace, l1.author, l1.edit_summary, l2.time_id, l1.page_text, l2.page_text
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  ORDER BY l1.time_id DESC, l2.time_id DESC;';
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  }
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  $template->header();
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  $q = $db->sql_unbuffered_query($sql);
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  if ( !$q )
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    $db->_die();
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  if ( $row = $db->fetchrow($q) )
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  {
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    echo '<p>';
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    do
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    {
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      $css = rch_get_css($row['size_change']);
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      $pagekey = ( isset($paths->nslist[$row['namespace']]) ) ? $paths->nslist[$row['namespace']] . $row['page_id'] : $row['namespace'] . ':' . $row['page_id'];
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      $pagekey = sanitize_page_id($pagekey);
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      // diff button
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      echo '(';
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      if ( isPage($pagekey) )
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      {
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        echo '<a href="' . makeUrlNS($row['namespace'], $row['page_id'], "do=diff&diff1={$row['oldrev_time']}&diff2={$row['currev_time']}", true) . '">';
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      }
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      echo $lang->get('pagetools_rc_btn_diff');
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      if ( isPage($pagekey) )
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      {
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        echo '</a>';
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      }
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      echo ') ';
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      // hist button
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      echo '(';
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      if ( isPage($pagekey) )
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      {
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        echo '<a href="' . makeUrlNS($row['namespace'], $row['page_id'], "do=history", true) . '">';
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      }
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      echo $lang->get('pagetools_rc_btn_hist');
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      if ( isPage($pagekey) )
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      {
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        echo '</a>';
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      }
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      echo ') . . ';
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      // link to the page
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      $cls = ( isPage($pagekey) ) ? '' : ' class="wikilink-nonexistent"';
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      echo '<a href="' . makeUrlNS($row['namespace'], $row['page_id']) . '"' . $cls . '>' . htmlspecialchars(get_page_title_ns($row['page_id'], $row['namespace'])) . '</a>; ';
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      // date
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      $today = time() - ( time() % 86400 );
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      $date = ( $row['currev_time'] > $today ) ? '' : MemberlistFormatter::format_date($row['currev_time']) . ' ';
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      $date .= date('h:i s', $row['currev_time']);
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      echo "$date . . ";
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      // size counter
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      $size_change = number_format($row['size_change']);
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      if ( substr($size_change, 0, 1) != '-' )
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        $size_change = "+$size_change";
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      echo "<span style=\"$css\">({$size_change})</span>";
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      // link to userpage
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      echo ' . . ';
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      $cls = ( isPage($paths->nslist['User'] . $row['author']) ) ? '' : ' class="wikilink-nonexistent"';
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      echo '<a href="' . makeUrlNS('User', sanitize_page_id($row['author']), false, true) . '"' . $cls . '>' . htmlspecialchars($row['author']) . '</a> ';
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      echo '(';
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      echo '<a href="' . makeUrlNS('Special', 'PrivateMessages/Compose/To/' . sanitize_page_id($row['author']), false, true) . '">';
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      echo $lang->get('pagetools_rc_btn_pm');
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      echo '</a>, ';
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      echo '<a href="' . makeUrlNS('User', sanitize_page_id($row['author']), false, true) . '#do:comments">';
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      echo $lang->get('pagetools_rc_btn_usertalk');
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      echo '</a>';
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      echo ') . . ';
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parents:
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      // Edit summary
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   166
      echo '<i>(';
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   167
      if ( empty($row['edit_summary']) )
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      {
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        echo '<span style="color: #808080;">' . $lang->get('history_summary_none_given') . '</span>';
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   170
      }
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   171
      else
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parents:
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      {
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        echo RenderMan::parse_internal_links(htmlspecialchars($row['edit_summary']));
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parents:
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   174
      }
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parents:
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   175
      echo ')</i>';
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parents:
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   176
      
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      echo '<br />';
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   178
    }
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   179
    while ( $row = $db->fetchrow($q) );
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    echo '</p>';
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   181
  }
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   182
  
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  $template->footer();
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   184
}
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parents:
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   185
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   186
function rch_get_css($change_size)
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   187
{
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  // Hardly changed at all? Return a gray
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  if ( $change_size <= 5 && $change_size >= -5 )
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    return 'color: #808080;';
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   191
  // determine saturation based on size of change (1-500 bytes)
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   192
  $change_abs = abs($change_size);
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   193
  $index = 0x70 * ( $change_abs / 500 );
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   194
  if ( $index > 0x70 )
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parents:
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   195
    $index = 0x70;
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parents:
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   196
  $index = $index + 0x40;
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parents:
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   197
  $index = dechex($index);
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parents:
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   198
  if ( strlen($index) < 2 )
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parents:
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   199
    $index = "0$index";
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   200
  $css = ( $change_size > 0 ) ? "color: #00{$index}00;" : "color: #{$index}0000;";
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parents:
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   201
  if ( $change_abs > 500 )
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parents:
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   202
    $css .= ' font-weight: bold;';
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   203
  return $css;
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parents:
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   204
}
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2c9745b5c09d Started on a Special:RecentChanges page, more to come.
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   206
?>