Abdelrazak Younes wrote:
> Peter Kümmel wrote:
>> Peter Kümmel wrote:
>>
>>> for values which are not surrogates "if (ch >= UNI_SUR_HIGH_START &&
>>> ch <= UNI_SUR_LOW_END)" (2047 values)
>>
>> read: only 2047 of the 65535 values are not allowed, and for the rest
>> a cast transforms from utf32 to utf16.
>
> I think QChar will automatically replace those with interrogation marks
> anyway.
>
> But I could also check for these values explicitely in my conversion
> routine and return this '?' characters for those unknown characters:
>
> char_type const UNI_SUR_HIGH_START 0xD800;
> char_type const UNI_SUR_LOW_END 0xDFFF;
>
> QChar const UnknownChar(...);
>
> QChar const ucs4_to_qchar(char_type const & ucs4)
> {
> if (ucs4 >= 0xFFFE
> || (ucs4 >= UNI_SUR_HIGH_START && ucs4 <= UNI_SUR_LOW_END)
> return UnknownChar;
>
> return QChar(static_cast<unsigned short>(ucs4));
> }
>
> Abdel.
>
>
This would be correct, but I don't think it is neccessary, because
where should the wrong value come from and Qt will catch it?
Maybe as assert only?
Peter
