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   RE: ANNOUNCE: xml encoding detector in C

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  • From: "Paul Langer" <Paul.Langer@softwareag.com>
  • To: <xml-dev@ic.ac.uk>
  • Date: Fri, 23 Apr 1999 12:09:25 +0200

At Friday, April 23, 1999 12:11 AM John Cowan wrote:

> I have written an XML encoding detector function in C.
> [snip]
> I believe it handles all the cases in Appendix F correctly,
> including the EBCDIC one.

One remark on the EBCDIC handling:

Your program returns "EBCDIC-CP-US" if it detects EBCDIC
without an explicit encoding declaration (see comment:
 /* better than nothing */).

I do not think that this behaviour is "better than nothing".
The XML spec says "Parsed entities which are stored in an encoding
other than UTF-8 or UTF-16 must begin with a text declaration containing
an encoding declaration"  (Chapter 4.3.3 Character Encoding in Entities,
see http://www.w3.org/TR/REC-xml#charencoding).

And if you want to define a default, what makes "EBCDIC-CP-US"
more desirable than e.g. "ebcdic-cp-is"?

All the best,

Paul Langer                           PL@softwareag.com
Software AG                           Tel. +49-6151-92-1912
Uhlandstr. 12                         Fax  +49-6151-92-1613
D-64297 Darmstadt 

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