From: "S.D" <s.d@...>
Date: 2008-05-30T06:57:28+09:00
Subject: PHP to Ruby (associative array to Hash)

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In the following PHP function, both 'types' and 'groups' are associative 
arrays. I'm trying to rewrite this function in Ruby, using Hashes and I 
haven't yet got it right. If someone with some insight into PHP and Ruby 
could give it a look and see where my current code might be incorrect, I 
'd appreciate any pointers that might correct the results. The PHP 
function is working; the Ruby version is not (yet) working. TIA for any 
tips, criticism and suggestions that you can submit.

-- Steve

The original PHP function:
$this->types = array(
                        'aac' => 'audio/x-aac',
                        'ai' => 'application/postscript',
                        'aif' => 'audio/x-aiff',
                        'aiff' => 'audio/x-aiff',
                        'asf' => 'video/x-ms-asf',
                        'asx' => 'video/x-ms-asx',
                        'avi' => 'video/avi'
                     );

$groups['office'] = 
array('csv','doc','dot','pdf','pot','pps','ppt','rtf','txt','xls');
$groups['image'] = 
array('ai','bmp','dxf','eps','gif','ico','jpg','jpe','jpeg','pdf','png','ps','swf','tif','tiff','wmf');
$groups['compressed'] = 
array('bin','bz','bz2','gz','sit','tar','tgz','z','zip');
$groups['video'] = 
array('asf','asx','avi','mov','mpg','mpeg','mp4','qt','ra','ram','swf','wmv');
$groups['audio'] = array('mp3','m4a','ra','ram','wav','wma');
$groups['web'] = 
array('css','gif','ico','jpg','jpeg','js','htm','html','pdf','php','phps','png','shtml','sql');
$groups['media'] = 
array('mp3','jpg','mpg','mpeg','vob','avi','wma','wmv','bmp','jpeg','aac','wav');   
 
/*
 * Return array of mime types
 *
 * @param string/bool $group_type
 * @return array
 */
public function getTypes($group_type=false) {
  if(!$group_type) {
    return $this->types;
  }
  else {
    if(array_key_exists($group_type,$this->groups)) {
      foreach($this->types as $key => $mt) {
        if(in_array($key,$this->groups[$group_type])) {
          $types[$key] = $mt;
        }
      }
      return $types;
    }
    else {
      return false;
    }
  }
}

The current Ruby translated function:
types = { 'aac'   => 'audio/x-aac',
               'ai'    => 'application/postscript',
               'aif'   => 'audio/x-aiff',
               'aiff'  => 'audio/x-aiff',
               'asf'   => 'video/x-ms-asf',
               'asx'   => 'video/x-ms-asx',
               'avi'   => 'video/avi'
        }
groups = {'office'     => 
['csv','doc','dot','pdf','pot','pps','ppt','rtf','txt','xls'],
          'image'      => 
['ai','bmp','dxf','eps','gif','ico','jpg','jpe','jpeg','pdf','png','ps','swf','tif','tiff','wmf'],
          'compressed' => 
['bin','bz','bz2','gz','sit','tar','tgz','z','zip'],
          'video'      => 
['asf','asx','avi','mov','mpg','mpeg','mp4','qt','ra','ram','swf','wmv'],
          'audio'      => ['mp3','m4a','ra','ram','wav','wma'],
          'web'        => 
['css','gif','ico','jpg','jpeg','js','htm','html','pdf','php','phps','png','shtml','sql'],
          'media'      => 
['mp3','jpg','mpg','mpeg','vob','avi','wma','wmv','bmp','jpeg','aac','wav']
         }
#---------------------------------
# Return array of mime types
#---------------------------------
def getTypes(grp_type)
  res_types=Hash.new
  if(!grp_type) then
     @types
  else
    if(groups.has_key?(grp_type)) then
      types.each do |k,v|
        if(groups[grp_type].has_value?(v)) then
          res_types[k]=v
        end
      end
    else
      res_types=false
    end
  end
  res_types
end


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