plugins/SpecialRecentChanges.php
author Dan
Sun, 25 Jan 2009 20:35:06 -0500
changeset 823 4596c40aaa94
parent 801 eb8b23f11744
permissions -rw-r--r--
AJAX core library: possible breaking change, readystatechange functions are now called with the XHR instance as the first parameter, to allow requests to run in parallel. This means much better stability but may break some applets (compatibility hack is included)
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<?php
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/**!info**
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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"      : "1.1.5",
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  "Author URI"   : "http://enanocms.org/"
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}
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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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eb8b23f11744 Two big commits in one day I know, but redid password storage to use HMAC-SHA1. Consolidated much AES processing to three core methods in session that should handle everything automagically. Installation works; upgrades should. Rebranded as 1.1.6.
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 * Version 1.1.6 (Caoineag beta 1)
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218a627eb53e Rebrand as 1.1.4 (Caoineag alpha 4)
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 * Copyright (C) 2006-2008 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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4f9bec0d65c1 More optimization work. Moved special page init functions to common instead of common_post hook. Allowed paths to cache page metadata on filesystem. Phased out the redundancy in $paths->pages that paired a number with every urlname as foreach loops are allowed now (and have been for some time). Fixed missing includes for several functions. Rewrote str_replace_once to be a lot more efficient.
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// $plugins->attachHook('session_started', 'SpecialRecentChanges_paths_init();');
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function SpecialRecentChanges_paths_init()
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{
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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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parents:
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      echo ') . . ';
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parents:
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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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parents:
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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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parents:
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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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parents:
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      echo "<span style=\"$css\">({$size_change})</span>";
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parents:
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parents:
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      // link to userpage
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parents:
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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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parents:
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      echo '(';
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parents:
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      echo '<a href="' . makeUrlNS('Special', 'PrivateMessages/Compose/To/' . sanitize_page_id($row['author']), false, true) . '">';
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parents:
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      echo $lang->get('pagetools_rc_btn_pm');
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Dan
parents:
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   164
      echo '</a>, ';
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parents:
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      echo '<a href="' . makeUrlNS('User', sanitize_page_id($row['author']), false, true) . '#do:comments">';
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parents:
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      echo $lang->get('pagetools_rc_btn_usertalk');
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parents:
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      echo '</a>';
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Dan
parents:
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   168
      echo ') . . ';
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Dan
parents:
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   169
      
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Dan
parents:
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      // Edit summary
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Dan
parents:
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   171
      echo '<i>(';
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Dan
parents:
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   172
      if ( empty($row['edit_summary']) )
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Dan
parents:
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      {
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   174
        echo '<span style="color: #808080;">' . $lang->get('history_summary_none_given') . '</span>';
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Dan
parents:
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   175
      }
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Dan
parents:
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   176
      else
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Dan
parents:
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      {
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   178
        echo RenderMan::parse_internal_links(htmlspecialchars($row['edit_summary']));
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parents:
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   179
      }
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Dan
parents:
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   180
      echo ')</i>';
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Dan
parents:
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   181
      
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Dan
parents:
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   182
      echo '<br />';
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Dan
parents:
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   183
    }
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parents:
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   184
    while ( $row = $db->fetchrow($q) );
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parents:
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   185
    echo '</p>';
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parents:
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   186
  }
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parents:
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   187
  
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  $template->footer();
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parents:
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   189
}
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parents:
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   190
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parents:
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   191
function rch_get_css($change_size)
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   192
{
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   193
  // Hardly changed at all? Return a gray
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parents:
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   194
  if ( $change_size <= 5 && $change_size >= -5 )
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parents:
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   195
    return 'color: #808080;';
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parents:
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   196
  // determine saturation based on size of change (1-500 bytes)
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parents:
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   197
  $change_abs = abs($change_size);
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parents:
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   198
  $index = 0x70 * ( $change_abs / 500 );
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parents:
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   199
  if ( $index > 0x70 )
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parents:
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   200
    $index = 0x70;
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Dan
parents:
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   201
  $index = $index + 0x40;
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Dan
parents:
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   202
  $index = dechex($index);
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Dan
parents:
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   203
  if ( strlen($index) < 2 )
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Dan
parents:
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   204
    $index = "0$index";
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parents:
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   205
  $css = ( $change_size > 0 ) ? "color: #00{$index}00;" : "color: #{$index}0000;";
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Dan
parents:
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   206
  if ( $change_abs > 500 )
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Dan
parents:
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   207
    $css .= ' font-weight: bold;';
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parents:
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   208
  return $css;
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parents:
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   209
}
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parents:
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2c9745b5c09d Started on a Special:RecentChanges page, more to come.
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?>