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open-i18n / rust-unic

UNIC: Unicode and Internationalization Crates for Rust
https://crates.io/crates/unic
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Conversion of decimal numbers in different scripts #211

Open clarfonthey opened 6 years ago

clarfonthey commented 6 years ago

It'd be useful if unic had an API that converted bidirectionally between unsigned integers and various scripts. For example, here are a few representations of the number twelve:

I recall seeing a crate that did something similar but I couldn't find it; I think having this kind of thing would be useful in unic.

behnam commented 6 years ago

To get this mapping, you need two things:

1) which characters map to ASCII digits via NFKC, 2) the ranges of characters with (decimal) numeric values.

From these, you can have all the range of numeral that map to ASCII. This mostly gives you what you want.

IIRC, one of the subscripts/superscripts (or one of the other ranges) does not have the NFKC mapping, which would need special attention.

That said, we haven't worked on unic-ucd-numeric yet, which would be the solution to (2).

For (1), unic-ucd-normal should have the data already.