Re: [xine-cvs] CVS: xine-vcdnav/doc cd-info.txt,1.6,1.7

Bastien Nocera writes:
 > Hello Rocky,
 > I guess I need to explain again that these aren't proper URIs. 

I just took a look at RCF 2396 at http://www.ietf.org/rfc/rfc2396.txt
which purports describe:

  a "superset" of operations that can be applied to URI.  It consists
  of both a grammar and a description of basic functionality for URI.

I don't see anything in there that suggests the improperness of the
changes made. If you could be a little more specific and cite a
document that explains the definition you are using of URI and how
this is not "proper", I'd appreciate it.

 > 
 > Proper URIs would include:
 > cdda:/
 > cdda:///
 > cdda:///tmp/foo
 > cdda:/tmp/foo
 > etc.

Proper URI's also include mailto:joe@xxxxxxxxxxxxxx But clearly a VCD
plugin isn't trying to accept *all* URI's, just the ones that it
claims to handle. In this respect, cdda:// analogous to http://,
ftp://, gopher://, telnet:// among others. In fact, I'd suggest the
:// ending as in cdda:// seems to be more prevalant than :/ as in
cdda:/, no matter how convenient the latter. The general convention
seems to be either put in // or leave out, as in 'mailto:' or 'news:'
or 'about:'. But not use one /.

 > 
 > The '@' would be discarded, as it is used to mark login names and
 > passwords before a hostname.

Again if you could be more specific and cite a document purporting to
represent the URI standard that indicates the '@' would be discarded,
I'd greatly appreciate it. Packages that I'm familiar with, such as
the Perl URI module handle @ just fine. The RFC cited above seems to
allow it on equal footing as colon. 

The case *against* using a colon is that the part between cdda:// and
the @ in this plugin can specify a filename in a file system. On some
filesystems that are supported by the plugin, namely Microsoft's OS's
a colon is used as a drive letter, and in other OS's as well a colon
in a filesystem name is more common than using an @ in the filesystem
name. Having looked at the RFC 2396 again, it occurs to me that a more
logical separator which is mentioned would be # which is used in HTML
to specify a part inside a document.

 > xine uses
 > URIs for compatibility with existing software (GNOME, KDE, and the world
 > at large).

I'm all for this. In fact, believe it or not the change was made to
try to be more compatible URIs used by with the world at large, vlc in
particular. :-)

But I'd love to be educated in such matters. What other existing
software out there cdda:/3 means "track 3 of some default CD-DA drive"?

And what software out there is going to break using
cdda:///dev/cdrom@3?

Thanks!


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