On 28.03.2005 06:43, "Michael B Allen" <email@hidden> wrote:
> For Darwin, or just about any other Unix based OS, you want to use the
> non-wide character mode.
Agreed. Just don't define XML_UNICODE and XML_UNICODE_WCHAR_T, and
XML_Char becomes an UTF-8 encoded char.
> Note that there are some minor gotchas to look out for when working
> with UTF-8 though. For example you cannot necessarily iterate over each
> character by simply examining each element in the array.
Actually, that's not much of a drawback. You cannot index into UTF-16
strings, either - a single code point can be encoded as a surrogate pair in
UTF-16.
> Each character may occupy between 1 and 6 bytes [1].
More precisely, between 1 and 4:
<http://www.unicode.org/faq/utf_bom.html#30>.
>> Could it be that expat is assuming wchar_t is 2 bytes instead of the 4
>> bytes of darwin running on powerpc?
>
> I *think* Expat's wchar_t is hardcoded at 2 bytes (UTF-16LE) period.
The byte order is certainly configurable (WORDS_BIGENDIAN in
expat_config.h), and I *think* that expat happily stores UTF-16 in 4-byte
wchars - after all, it would take them extra effort to break this.
- WBR, Alexey Proskuryakov
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