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On Sat, May 28, 2005 at 11:23:51AM -0400, Beman Dawes wrote:
"Artem B. Bityuckiy" <dedekind@yandex.ru> wrote in message 42982EB2.40507@yandex.ru">news:42982EB2.40507@yandex.ru...
Beman Dawes wrote:
I'd like to be able to use the C++ standard library std::wstring with Cygwin.
What would be involved in adding wide character support to newlib? In a cgywin mailing list posting Christopher Faylor indicated that this is what is needed.
2 years ago I worked on this issue. You need NLS support in Newlib to make use of C++ wstring stuff.
What I did: 1. Ported the Iconv library to Newlib. Iconv is the heart of NLS. It is currently in Newlib CVS. Perhaps, it isn't ideal, but it worked. 2. Implemented mblen() and friends. 3. Implemented wc<->mb convertion functions (mbtowc(), mbstowcs(), etc). 4. Added full wide-char support to vscanf()/vprintf() serites (%S, etc).
2,3,4 is not in the Newlib repositiry. But it worked quite stably AFAIR.
I'm not involved in the area anymore and I have no energy to complete the work, sorry. I may share what I've done with you if you wish to implement the NLS stuff for Newlib.
I don't know yet. I'm trying to get an idea of how much effort would be involved, and if the Newlib folks are interested.
I'm sure that Jeff wouldn't refuse a patch which improved newlib functionality. To be safe, however, you could make the option configurable with a "configure --wide-char" or something. There's probably an existing configure option that could be pressed into service, in fact.
cgf
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