Messages in this thread | | | Date | Sat, 18 Jun 2005 16:48:04 +0200 | From | Lukasz Stelmach <> | Subject | Re: A Great Idea (tm) about reimplementing NLS. |
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Måns Rullgård napisał(a): >>>What do you do if the underlying filesystem can not store some unicode >>>characters that are allowed on others? >> >>That's why UTF-8 is suggested. UTF-8 has been developed to "fool" the >>software that need not to be aware of unicodeness of the text it manages >>to handle it without any hickups *and* to store in the text information >>about multibyte characters.What characters exactly you do mean? NULL? >>There is no NULL byte in any UTF-8 string except the one which >>terminates it. > > That's exactly how ext3, reiserfs, xfs, jfs, etc. all work. A few > filesystems are tagged as using some specific encoding. If your > filesystem is marked for iso-8859-1, what should a kernel with a > conversion mechanism do if a user tries to name a file 김?
Return -ENOENT? I am guessing. But please tell me what should do userland software if it runs with locale set to something.iso-8859-2 and finds 김 in the directory? That is the same problem. And for now ISO 8-bit encodings are far more popolar and usefull with contemporary tools than UTF-8. That is why I think suggestion of a layer in the kernel that would translate filenames form utf-8 stored on the media to e.g. latin2 used by tools is quite reasonable. Especially when there is more than one encoding for a particular language (think Russian, Polish). Even more, with such a facility transition would be much more greaceful since you could have utf-8 filesystem and then you can worry about tools other tools. The filesystem is already populated with UFT-8 names.
>>>I think UDF is a better filesystem for many types of media since it is >>>able to me more gently to the sectors storing the meta data than VFAT >>>ever will be. >>I've tried cd packet writing with UDF and it gives insane overhead of >>about 20%. What metadata you'd like to store for example on your >>flashdrive or a floppy disk? > > Filename, timestamps, all the usual.
That's why IMHO FAT is quite enough for this purpose.
-- Było mi bardzo miło. Trzecia pospolita klęska, [...] >Łukasz< Już nie katolicka lecz złodziejska. (c)PP
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