[fpc-pascal] Parse unicode scalar
nickysn at gmail.com
Sun Jul 2 21:15:34 CEST 2023
On 7/2/23 20:38, Martin Frb via fpc-pascal wrote:
> On 02/07/2023 19:20, Nikolay Nikolov via fpc-pascal wrote:
>> On 7/2/23 16:30, Hairy Pixels via fpc-pascal wrote:
>>> I'm interested in parsing unicode scalars (I think they're called)
>>> to byte sized values but I'm not sure where to start. First thing I
>>> did was choose the unicode scalar U+1F496 (💖).
>> There's no such thing as "unicode scalar" in Unicode terminology:
> There seems to be
Too bad it's not included in the Unicode glossary. :( So, it's basicaly
a Unicode code point that is not a high-surrogate or low-surrogate. And
if you want to know what "high-surrogate" and "low-surrogate" means, you
should read about UTF-16.
>>> Next I cheated and ask ChatGPT. :) Amazingly from my question it was
>>> able to tell me the scaler is comprised of these 4 bytes:
>>> 240 159 146 150
> That is an utf-8 encoded representation of such a value.
> You can find them on https://www.compart.com/en/unicode/U+0041
> (using the hex for whatever codepoint interests you)
Or just learn about Unicode encodings, such as UTF-8, UTF-16, etc.
Both UTF-8 and UTF-16 are frequently used and are important to know.
UTF-32 is rarely used, but is very simple and easy to understand as
well. It's just not very efficient, hence its rarity. :)
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