get the sourcecode [of UTF-8]

[Sławomir Osipiuk]

On Monday, 04 November 2024, 00:43:29 (-05:00), A bughunter via Unicode wrote:
>
> No, it does not answer my question.

I don't think I'm alone in saying that your question is very unclear, in major part by your very strange use of certain terms. I don't think I've ever encountered "bytecode" outside of Java implementations, and never does it refer to textual (prose) data as you seem to do. I still don't know what "compile time UTF-8" is supposed to be, and I've read both your messages multiple times.

> In order to fully authenticate: the codepage of the character to glyph map must be known.

To authenticate what? At the end of the day, you're always just authenticating a stream of bits.

> I need the bytecode to glyph map of UTF-8 as it is used by my runtime software.

You want to map UTF8-encoded code points to characters? (Glyphs are the visual representations of characters, determined by the font.) In that case the "map" is the Unicode database.  Each code point (encoded as one or more bytes in UTF8) maps to a character. Versions of the database are freely accessible online.

But I am still very unsure of what you're asking for. Are you concerned that code points may be reassigned in the future? That, for example, writing "Smith" in version 16 may appear as "Smite" in a future version, and this affects the apparent content of a checksummed text file? If so, that is prevented by the Unicode Stability Policy; assigned code points cannot have their character identity changed. I don't see any practical way of exploiting differences between Unicode versions to alter the apparent content of text.

If you wish to checksum a text file encoded in UTF-8, any implementation of a well-defined checksum algorithm will work. Your runtime doesn't matter. The checksum will be on the bytes of the file. If you must know what version of the Unicode Standard was used when creating the file -- and that's a strange thing to want -- that would have to be included in the file prior to checksumming it.

That said, I remain confused how the "source code" of anything is supposed to help you.

Sławomir