[XML-SIG] Processing xml files with ISO 8859-1 chars

[Dan Gunter]

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I stand corrected. That's what you get for skimming the first
reference that pops up in Google :) Of course, checking an _arbitrary_
encoding for correctness seems like a real burden on the parser, but
maybe UTF-8 is so common it should be checked. This time, I will do
the wise thing and defer to the experts on this issue.

Dan


Morus Walter wrote:
>=20
> Dan Gunter writes:
> > The simple answer is that the XML parser is illiterate. Since there a=
re
> > no bit patterns that are illegal in UTF-8, I don't see how the parser
> > could know that the chosen encoding produced, from the user's
> > perspective, garbage. The pretty-printer, on the other hand, knows th=
e
> > difference between printable and non-printable characters and can thu=
s
> > complain.
> >
> Sorry. This is wrong.
> There are a lot of byte combinations that can never occur
> in UTF-8. E.g. there can never be a single 8-bit character between 7-bi=
t
> characters ([\x20-\x7F][\x80-\xFF][\x20-\x7F]).
> So the parser could check, whether the byte stream forms valid utf-8.
>=20
> greetings
>         Morus
>=20
> --
> Th. Morus Walter =B7 Manager Content & Data Development
> xipolis.net GmbH & Co. KG =B7 Schellingstrasse 35 =B7 80799 M=FCnchen
>=20
> _______________________________________________
> XML-SIG maillist  -  XML-SIG@python.org
> http://mail.python.org/mailman/listinfo/xml-sig

--=20
[ Dan Gunter, LBNL -  http://www-didc.lbl.gov/~dang/ ]
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