Re: [xml] libxml + unicode

[Daniel Veillard <veillard redhat com>]

On Tue, Jul 25, 2006 at 11:14:03AM -0400, Mark Wyszomierski wrote:
> Hi,
>
> I'm trying to print some characters that were saved in a unicode format
> (some special french accent characters). I was hoping the following would
> work but I just get strange characters printed:
>
>    xmlChar *key = xmlNodeListGetString(doc, curNode->xmlChildrenNode, 1);

  key will be in UTF-8 , UTF-8 supports the full Unicode set, though XML
only allows a subset.

Read http://xmlsoft.org/encoding.html

>    wprintf(L"Node text is: [%s]\n", key);

  I guess wprintf does not expect UTF-8 encoding.

>    xmlFree(key);
>
> My xml document looks like this:
>
> <?xml version="1.0" encoding="UTF-8" ?>
>         <test>woo: Ç Ç Ç</test>

  Which is actually completely irrelvant.

> What do I have to do to get those special characters to be printed
> correctly? In fact, now when I save my XML document as type UTF-8, even the
> ascii characters don't print correctly. (printing ASCI chars when saved in
> ASCI format works fine).

  Since UTF-8 and ASCII coincide for the ASCII subset of Unicode, I don't
know what you're doing to print them, but you really have a problem.
Being sure to understand the difference between, unicode, code points,
encoding is really a requirement for any programmer those days
  http://www.joelonsoftware.com/articles/Unicode.html

Read also the other article pointed from Tim Bray, he tries to give 
explanations around those issues.

Daniel

-- 
Daniel Veillard      | Red Hat http://redhat.com/
veillard redhat com  | libxml GNOME XML XSLT toolkit  http://xmlsoft.org/
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