plugins/gallery/functions.php
author Dan
Thu, 15 May 2008 21:09:04 -0400
changeset 26 023a21c8f47c
parent 18 c1c398349651
child 38 512951548faa
permissions -rw-r--r--
Added support for embedding Snapr images as wikitext code into regular pages
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0
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<?php
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/*
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 * Snapr
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 * Version 0.1 beta 1
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 * Copyright (C) 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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/**
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 * Generates a random filename for Snapr images.
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 * @param int $length Optional - length of filename
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 * @return string
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 */
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function gallery_make_filename($length = 24)
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{
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  $valid_chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
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  $valid_chars = enano_str_split($valid_chars);
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  $ret = '';
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  for ( $i = 0; $i < $length; $i++ )
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  {
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    $ret .= $valid_chars[mt_rand(0, count($valid_chars)-1)];
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  }
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  return $ret;
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}
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/**
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 * Returns the extension of a file.
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 * @param string file
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 * @return string
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 */
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function get_file_extension($file)
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{
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  return substr($file, ( strrpos($file, '.') + 1 ));
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}
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/**
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 * For a given image ID, return the folder hierarchy.
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 * @param int The image ID
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 * @return array
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 */
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function gallery_imgid_to_folder($img_id)
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{
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  global $db, $session, $paths, $template, $plugins; // Common objects
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  if ( !is_int($img_id) )
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    return array();
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  $img_id = strval($img_id);
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  $ret = array();
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  $sanity = 0;
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  $sanity_stack = array();
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  while(true)
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  {
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    $sanity++;
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    $q = $db->sql_query('SELECT img_title, img_id, folder_parent FROM '.table_prefix.'gallery WHERE img_id=' . $img_id . ';');
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    if ( !$q )
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      $db->_die();
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    $row = $db->fetchrow();
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    if ( !$row )
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    {
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      break;
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    }
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    if ( $sanity > 1 )
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    {
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      $ret[] = $row['img_title'];
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    }
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    if ( !$row['folder_parent'] )
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    {
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      break;
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    }
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    if ( in_array($row['img_id'], $sanity_stack) )
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      return array('Infinite loop');
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    $sanity_stack[] = $row['img_id'];
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    $img_id = $row['folder_parent'];
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  }
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  return $ret;
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}
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/**
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 * Generates a hierarchy of Gallery folders.
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 * @return array
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 */
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function gallery_folder_hierarchy()
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{
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  global $db, $session, $paths, $template, $plugins; // Common objects
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  $q = $db->sql_query('SELECT img_id, img_title, folder_parent FROM '.table_prefix.'gallery WHERE is_folder=1');
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  if ( !$q )
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    $db->_die();
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  if ( $db->numrows() < 1 )
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  {
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    return array();
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  }
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  $lookup_table = array();
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  $hier = array('_id' => 'NULL');
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  $orphans = array();
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  $persist_orphans = array();
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  while ( $row = $db->fetchrow() )
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  {
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    if ( !$row['folder_parent'] )
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    {
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      // root-level folder
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      $hier[ $row['img_title'] ] = array('_id' => $row['img_id']);
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      $lookup_table[$row['img_id']] =& $hier[ $row['img_title'] ];
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    }
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    else if ( $row['folder_parent'] && isset($lookup_table[$row['folder_parent']]) )
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    {
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      // child folder, parent is resolved
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      $lookup_table[ $row['folder_parent'] ][ $row['img_title'] ] = array('_id' => $row['img_id']);
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      $lookup_table[ $row['img_id'] ] =& $lookup_table[ $row['folder_parent'] ][ $row['img_title'] ];
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    }
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    else if ( $row['folder_parent'] && !isset($lookup_table[$row['folder_parent']]) )
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    {
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      // child folder, orphan as of yet
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      $orphans[] = $row;
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    }
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  }
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  // Resolve orphans
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  do
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  {
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    $persist_orphans = array();
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    while ( count($orphans) > 0 )
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    {
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      $orphan =& $orphans[ ( count($orphans) - 1 ) ];
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      if ( isset($lookup_table[$orphan['folder_parent']]) )
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      {
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        $lookup_table[ $orphan['folder_parent'] ][ $orphan['img_title'] ] = array('_id' => $orphan['img_id']);
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        $lookup_table[ $orphan['img_id'] ] =& $lookup_table[ $orphan['folder_parent'] ][ $orphan['img_title'] ];
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      }
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      else
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      {
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        $persist_orphans[] = $orphans[ ( count($orphans) - 1 ) ];
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        //echo 'BUG: ' . htmlspecialchars($orphan['img_title']) . ' (' . $orphan['img_id'] . ') is an orphan folder (parent is ' . $orphan['folder_parent'] . '); placing in root<br />';
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        // $hier[ $orphan['img_title'] ] = array();
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        // $lookup_table[$orphan['img_id']] =& $hier[ $orphan['img_title'] ];
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      }
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      unset($orphan, $orphans[ ( count($orphans) - 1 ) ]);
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    }
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    $orphans = $persist_orphans;
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    //die('insanity:<pre>'.print_r($hier,true).print_r($lookup_table,true).print_r($persist_orphans,true).'</pre>');
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  }
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  while ( count($persist_orphans) > 0 );
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  return $hier;
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}
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/**
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 * Generates HTML for a folder selector.
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 * @param string The form field name, defaults to folder_id.
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 * @param bool Whether to auto-select the root or not. Defaults to true.
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 * @return string
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 */
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function gallery_hier_formfield($field_name = 'folder_id', $autosel = true)
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{
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  $hier = gallery_folder_hierarchy();
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  $img_join      = scriptPath . '/images/icons/joinbottom.gif';
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  $img_join_term = scriptPath . '/images/icons/join.gif';
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  $img_line      = scriptPath . '/images/icons/line.gif';
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  $img_empty     = scriptPath . '/images/icons/empty.gif';
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  $html = _gallery_hier_form_inner($hier, '<Root>', $field_name, -1, array(), $img_join, $img_join_term, $img_line, $img_empty, $autosel);
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  return $html;
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}
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// 
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/**
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 * Inner loop for form field generator (needs to call itself recursively)
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 * @access private
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 */
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function _gallery_hier_form_inner($el, $name, $fname, $depth, $depth_img, $img_join, $img_join_term, $img_line, $img_empty, $sel = false)
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{
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  $html = '';
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  foreach ( $depth_img as $sw )
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    $html .= '<img alt="  " src="' . $sw . '" />';
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  $html .= '<label><input ' . ( $sel ? 'checked="checked"' : '' ) . ' type="radio" name="' . $fname . '" value="' . $el['_id'] . '" /> ' . htmlspecialchars($name) . '</label><br />';
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  if ( count($el) > 1 )
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  {
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    // Writing this image logic sucked.
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    $count = 0;
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    foreach ( $el as $key => $el_lower )
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    {
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      $count++;
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      if ( $key == '_id' )
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        continue;
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      $depth_mod = $depth_img;
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      $last = ( $count == count($el) );
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      for ( $i = 0; $i < count($depth_mod); $i++ )
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      {
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        if ( $depth_mod[$i] == $img_join_term || $depth_mod[$i] == $img_empty )
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          $depth_mod[$i] = $img_empty;
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        else
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          $depth_mod[$i] = $img_line;
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      }
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      if ( $last )
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        $depth_mod[] = $img_join_term;
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      else
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        $depth_mod[] = $img_join;
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      $html .= _gallery_hier_form_inner($el_lower, $key, $fname, ( $depth + 1 ), $depth_mod, $img_join, $img_join_term, $img_line, $img_empty);
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    }
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  }
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  return $html;
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}
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/**
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 * Returns an array containing the IDs of all of the given folder ID's children. Recursive function.
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 * @param int ID of folder
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 */
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function gal_fetch_all_children($id)
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{
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  global $db, $session, $paths, $template, $plugins; // Common objects
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  if ( !is_int($id) )
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  {
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    die('not int');
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    return false;
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  }
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  $children = array();
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  $q = $db->sql_query('SELECT img_id,is_folder FROM '.table_prefix.'gallery WHERE folder_parent=' . $id . ';');
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  if ( !$q )
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    $db->_die();
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  if ( $db->numrows() < 1 )
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  {
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    return $children;
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  }
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  $folders = array();
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  while ( $row = $db->fetchrow() )
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  {
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    $children[] = intval($row['img_id']);
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    if ( $row['is_folder'] == 1 )
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      $folders[] = intval($row['img_id']);
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  }
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  foreach ( $folders as $folder )
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  {
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    $grandchildren = gal_fetch_all_children($folder);
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    if ( $grandchildren === false )
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    {
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      return false;
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    }
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    $children = array_merge($children, $grandchildren);
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  }
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  return $children;
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}
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/**
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 * Lists all normal files within a given directory. Recursive function. Can also return the list of directories in the second parameter by reference.
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 * @param string Directory to search
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 * @param array Variable in which to store 
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 * @return array Not multi-depth
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 */
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function gal_dir_recurse($dir, &$dirlist)
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{
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  $dir_handle = opendir($dir);
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  if ( !$dir_handle )
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    return false;
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  $entries = array();
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  $dirlist = array();
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  while ( true )
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  {
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    $file = readdir($dir_handle);
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    if ( !$file )
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      break;
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   294
    if ( $file == '.' || $file == '..' )
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      continue;
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    $file = $dir . '/' . $file;
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    if ( is_dir($file) )
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    {
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      $children = gal_dir_recurse($file, $dirtemp);
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      $dirlist[] = $file;
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      $dirlist = array_merge($dirlist, $dirtemp);
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      $entries = array_merge($entries, $children);
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    }
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    else if ( is_file($file) )
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    {
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      $entries[] = $file;
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   307
    }
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    else
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    {
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      die($file . ' is not a file or directory');
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    }
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  }
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  closedir($dir_handle);
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  return $entries;
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}
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18
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/**
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 * Wrapper for JSON decoding that works on Enano 1.0.x and 1.1.x
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 * @param string JSON datastream...
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 * @return mixed
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 */
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function snapr_json_decode($data)
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{
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  if ( defined('ENANO_ATLEAST_1_1') )
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  {
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    try
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    {
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      $decoded = enano_json_decode($data);
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    }
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    catch ( Exception $e )
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    {
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   333
      $response = array(
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        'mode' => 'error',
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        'error' => 'Exception in JSON parser.'
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      );
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      die(enano_json_encode($response));
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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    }
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   339
  }
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   340
  else
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   341
  {
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   342
    $json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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    $decoded = $json->decode($data);
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   344
  }
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  return ( isset($decoded) ) ? $decoded : false;
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   346
}
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   347
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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/**
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   349
 * Wrapper for JSON encoding that works on Enano 1.0.x and 1.1.x
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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 * @param mixed Data to encode
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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 * @return string
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 */
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   354
function snapr_json_encode($data)
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   355
{
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   356
  if ( defined('ENANO_ATLEAST_1_1') )
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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diff changeset
   357
  {
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   358
    try
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   359
    {
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   360
      $encoded = enano_json_encode($data);
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   361
    }
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   362
    catch ( Exception $e )
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   363
    {
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   364
      $response = array(
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   365
        'mode' => 'error',
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   366
        'error' => 'Exception in JSON encoder.'
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   367
      );
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   368
      die(enano_json_encode($response));
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   369
    }
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   370
  }
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   371
  else
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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diff changeset
   372
  {
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   373
    $json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   374
    $encoded = $json->encode($data);
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   375
  }
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   376
  return ( isset($encoded) ) ? $encoded : false;
c1c398349651 Added initial support for notes (aka tags) on images, done completely (including initial load of metadata) with AJAX. They're not fixed at 100x100 like on Facebook either.
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   377
}
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   378
0
7caf561c50ee Initial population; browser, viewer, uploader, and security are working
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   379
?>