[Phpprintipp] Media attributes

[Psou]

Hi all,

I discovered Phpprintipp yesterday and, first of all, I want to thank you, 
Thomas, for your so usefull work !!

I've tested it for two days on my Cups server and I can get almost all what I 
want. 

Anyway, there are still two issues that I can't solve while using 
PrintIPP::getPrinterAttributes() :
1 - All kind of attributes which concern media (type, format and source) are 
mixed in the same attribute : "media_supported". As I want to build a print 
dialog box, I need to separate these three groups of attributes. I'm quite 
sure that there is a way to do so, since when I use CUPS http interface, I 
get three distinct lists of values to set up separately the type (Preprinted, 
Transparency, Labels...), the format (Letter, A4, ...)  and the source (Auto, 
Tray1, Tray2,...) of paper.
2 - Some attributes, which are only available with one specific 
printer/driver, are not  returned in the list of attributes 
(watermark-text-supported or watermark-font-supported on a HP LaserJet, ...). 
How can I get all the attributes available with one printer ?

Thanks in advance.
Psou