Eric Lemings wrote:
-----Original Message-----
From: Martin Sebor [mailto:[EMAIL PROTECTED]
Sent: Wednesday, March 12, 2008 10:52 AM
To: dev@stdcxx.apache.org
Subject: Re: STDCXX-435
Eric Lemings wrote:
[...]
Right. And I believe that limit is
min(__from_end-__from, __to_limit-__to)
Suppose MB_CUR_MAX=4, the size of the source sequence is 1 byte
(with no terminating NUL), and the byte doesn't form a complete
multibyte character. There's no way to tell the function not to
attempt to read past the first byte.
I could be missing something but wouldn't this constitute an invalid
conversion?
Not invalid -- incomplete. The only way to tell whether it's valid
or not is to look at the next byte. Which is exactly what mbsrtowcs()
will do: read past the first source byte in an effort to determine
what the rest of the multibyte character is. This first byte could
be something like "\xc2" in UTF-8 which doesn't mean anything by
itself but needs one other byte to form a valid character.
Martin
