Trash spec: wrapping up

[David Faure]

On Monday 08 November 2004 08:29, Alexander Larsson wrote:
> On Sat, 2004-11-06 at 00:20 +0100, David Faure wrote:
> > On Tuesday 02 November 2004 10:48, you wrote:
> > > On Tue, 2004-11-02 at 10:04 +0300, Mikhail Ramendik wrote:
> > > > Alexander Larsson wrote:
> > > > 
> > > > > Thus, i propose that we store the byte string in escaped form in the
> > > > > trash info file. The normal desktop file escaping method doesn't allow
> > > > > encoding of any byte value, so we can't use that. To avoid multiple
> > > > > escape/unescape problems when using existing desktop parsers we
> > > > > shouldn't extend that method. Instead i propose that we use url-style
> > > > > escaping. 
> > > > 
> > > > What's the name of the standard that describes URL-style escaping and is 
> > > > supported in Gnome and KDE? We need to redference that in the text.
> > > 
> > > Its described in RFC 2396, section 2.4.1. We still have to decide
> > > exactly what characters to escape though. I think a good set of
> > > characters to not escape is the "unreserved characters" class in the
> > > RFC, plus "/".
> > > 
> > > That would mean everything is escaped except:
> > > 'a' - 'z', 'A'- 'Z', '0' - '9', 
> > > '-', '_', '.' '!', '~', '*', ''', '(', ')'
> > > '/'
> >  
> > The shared code for this in KDE (i.e. KURL) refers to
> >  RFC 1738, 2.2. URL Character Encoding Issues (pp. 3-4)
> > and encodes everything <=32, >=127, or among
> > @<>#"&%?={}|^~[]'`\:+
> > 
> > This conflicts on ~ and ' ... but does it matter? If one implementation
> > encodes '~' and the other doesn't, this is no problem, they can both 
> > read each other anyway.
> > 
> > Given the Key=Value / Key[fr]=Value format, I think the most important is to 
> > make sure that '=', '[', ']', control characters (<32) and non-ascii (>=127) 
> > are escaped, the rest doesn't matter.
> > 
> > If an implementation wants to escape 'a'..'z' it will look ugly, but it will still
> > be interoperable :)
> 
> Sure, the main need is to define the minimal set that has to be escaped.
> Your set looks fine to me.

Mikhail: can you add the above to the trash spec? http://www.ramendik.ru/docs/trashspec.html
doesn't seem to have it yet.

On Tuesday 02 November 2004 08:04, Mikhail Ramendik wrote:
> What's the name of the standard that describes URL-style escaping and is 
> supported in Gnome and KDE? We need to redference that in the text.

That would be RFC 1738, section 2.2.

-- 
David Faure, faure at kde.org, sponsored by Trolltech to work on KDE,
Konqueror (http://www.konqueror.org), and KOffice (http://www.koffice.org).