CYGWIN=codepage? Or LC_CTYPE=foo?
Kazuhiro Fujieda
fujieda@jaist.ac.jp
Sun Apr 6 15:06:00 GMT 2008
>>> On Sun, 06 Apr 2008 13:13:55 +0200
>>> Corinna Vinschen said:
> So, given my vague understanding of this language stuff, the conversion
> from wide char to multibyte string *can* be based on the notion the
> applications have of the language/codepage. Which sounds to me as if
> using LANG/LC_CTYPE would also make sense for Cygwin's internal
> conversions.
>
> Does that make sense? I don't know. No. 5: "More input, please!"
Your understanding is quite right.
> I would be basically fine with that, we just have to replace the
> newlib functions _mbtowc_r and _wctomb_r. All other conversions are
> based on these. What we still also need is a good conversion
> function from LANG/LC_CTYPE to Windows codepage.
>
> And here's the problem: I don't think I understand this stuff good
> enough. Does anybody have fun and time to come up with that?
I can help you.
>>> On Sun, 06 Apr 2008 13:47:34 +0200
>>> Corinna Vinschen said:
> Not quite, unfortunately. iswalpha, iswblank, iswcntrl, iswprint,
> iswpunct, iswspace, towlower and towupper also need a bit of work.
Actually I implemented these functions several years ago for
Cygwin DLL 1.3.12. These functions are implemented by Win32 API.
>>> On Sun, 06 Apr 2008 14:02:59 +0200
>>> Corinna Vinschen said:
> Gee! strcoll, strxfrm, wcscoll and wcsxfrm are also candidates,
> of course.
They are categorized into LC_COLLATE. I have the implementations
nevertheless.
> Wouldn't it make sense to use, say, FreeBSD code for the character stuff
> throughout? Even for the sys_wcstombs and sys_mbstowcs functions?
> Of so, would anybody like to help to work on this?
Windows knows about processing characters well. We can implement
the C library functions processing characters with Win32 API.
I will reform the implementations and contribute them by the end
of this month, possibly.
____
| AIST Kazuhiro Fujieda <fujieda@jaist.ac.jp>
| HOKURIKU School of Information Science
o_/ 1990 Japan Advanced Institute of Science and Technology
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