source: extensions/download_by_size/main.inc.php @ 24124

<?php
/*
Plugin Name: Download by Size
Version: auto
Description: Select a photo size before download
Plugin URI: http://piwigo.org/ext/extension_view.php?eid=
Author: plg
Author URI: http://le-gall.net/pierrick
*/

if (!defined('PHPWG_ROOT_PATH'))
{
  die('Hacking attempt!');
}

define('DLSIZE_PATH' , PHPWG_PLUGINS_PATH.basename(dirname(__FILE__)).'/');

add_event_handler('loc_end_picture', 'dlsize_picture');
function dlsize_picture()
{
  global $conf, $template, $picture;

  // in case of file with a pwg_representative, we simply fallback to the
  // standard button (which downloads the original file)
  if (!$picture['current']['src_image']->is_original())
  {
    return;
  }
  
  $template->set_prefilter('picture', 'dlsize_picture_prefilter');

  $params = array(
    'id' => $picture['current']['id'],
    'part' => 'e',
    'download' => null,
    );
  $base_dl_url = add_url_params(get_root_url().PHPWG_PLUGINS_PATH.'download_by_size/action.php', $params);
  
  $template->assign(
    array(
      'DLSIZE_URL' => $base_dl_url.'&amp;size=',
      )
    );

  if ($conf['picture_download_icon'])
  {
    // even if original can't be downloaded, we set U_DOWNLOAD so that
    // visitor can download smaller sizes
    $template->append('current', array('U_DOWNLOAD' => '#'), true);
    
    if (!empty($picture['current']['download_url']))
    {
      $template->assign('DLSIZE_ORIGINAL', $picture['current']['download_url']);
    }
  }

  $template->set_filename('dlsize_picture', realpath(DLSIZE_PATH.'picture.tpl'));
  $template->parse('dlsize_picture');
}

function dlsize_picture_prefilter($content, &$smarty)
{
  $pattern = '#\{if isset\(\$current\.U_DOWNLOAD\)\}\s*<a #';
  $replacement = '{if isset($current.U_DOWNLOAD)}<a id="downloadSizeLink" ';
  $content = preg_replace($pattern, $replacement, $content);

  return $content;
}

/**
 * getFilename function, copied from Batch Manager
 */
function dlsize_getFilename($row, $filesize=array())
{
  global $conf;

  if (!isset($conf['download_by_size_file_pattern']))
  {
    $conf['download_by_size_file_pattern'] = '%filename%_%dimensions%';
  }
  
  $row['filename'] = stripslashes(get_filename_wo_extension($row['file']));

  // datas
  $search = array('%id%', '%filename%', '%author%', '%dimensions%');
  $replace = array($row['id'], $row['filename']);

  $replace[2] = empty($row['author']) ? null : $row['author'];
  $replace[3] = empty($filesize) ? null : $filesize['width'].'x'.$filesize['height'];

  $filename = str_replace($search, $replace, $conf['download_by_size_file_pattern']);

  // functions
  $filename = preg_replace_callback('#\$escape\((.*?)\)#', create_function('$m', 'return str2url($m[1]);'),   $filename);
  $filename = preg_replace_callback('#\$upper\((.*?)\)#',  create_function('$m', 'return str2upper($m[1]);'), $filename);
  $filename = preg_replace_callback('#\$lower\((.*?)\)#',  create_function('$m', 'return str2lower($m[1]);'), $filename);
  $filename = preg_replace_callback('#\$strpad\((.*?),(.*?),(.*?)\)#', create_function('$m', 'return str_pad($m[1],$m[2],$m[3],STR_PAD_LEFT);'), $filename);

  // cleanup
  $filename = preg_replace(
    array('#_+#', '#-+#', '# +#', '#^([_\- ]+)#', '#([_\- ]+)$#'),
    array('_', '-', ' ', null, null),
    $filename
    );

  if (empty($filename) || $filename == $conf['download_by_size_file_pattern'])
  {
    $filename = $row['filename'];
  }

  $filename.= '.'.get_extension($row['path']);

  return $filename;
}

if (!function_exists('str2lower'))
{ 
  if (function_exists('mb_strtolower') && defined('PWG_CHARSET'))
  { 
    function str2lower($term)
    {
      return mb_strtolower($term, PWG_CHARSET);
    }
    function str2upper($term)
    {
      return mb_strtoupper($term, PWG_CHARSET);
    }
  }
  else
  { 
    function str2lower($term)
    {
      return strtolower($term);
    }
    function str2upper($term)
    {
      return strtoupper($term);
    }
  }
}
?>