All functions str* doesn't work well with multi-bytes strings (such as
UTF-8)
Regards,
Nicolas
Le mardi 21 avril 2009 à 17:29 +0800, Ryan Li a écrit :
> Hi Chris,
>
> I gave a look at the strnlen() function, and found that it wouldn't work
> as I hoped. Since a simple test of strlen("\x40\x00\x40", 4) will give
> the return value 1. This simply doesn't work for the strings that have
> NULL characters *in the middle*. However, as I can see from the raw SMS
> data, there's an instance encoded in 7-byte, having a NULL in the
> middle. Maybe the service center lost the data and used NULL as a
> replacement. Hence I think the for() loops are necessary.
> Incidentally, I wanted to use the ParseFieldString() function in
> record.cc at the first time, but didn't work. However, I think it'd be
> prettier if we replace the for() loop inside the function with an
> equivalent strnlen(). Moreover, or could we just implement the for()
> loop detecting NULLs-in-the-middle inside the ParseFieldString() function?
>
> Chris Frey wrote:
> > I used the strnlen() function. See the latest commit in the git tree
> > with 'git log -p'
> >
> > With UCS2 strings, maybe a function like wcsnlen would work for us.
> > I'd rather not add for() loops to various parts of the code, if we can
> > use strnlen() and wcsnlen(), so I haven't applied your patch.
>
> Ryan Li
>
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--
Nicolas VIVIEN
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