Case-insensitive UTF-8 string collation for SQLite (C/C++)

Question

I am looking for a method to compare and sort UTF-8 strings in C++ in a case-insensitive manner to use it in a custom collation function in SQLite.

1. The method shou

Answer 1

If you are using it to do searching and sorting for your locale only, I suggest your function to call a simple replace function that convert both multi-byte strings into one byte per char ones using a table like:

A -> a
à -> a
á -> a
ß -> ss
Ç -> c
and so on

Then simply call strcmp and return the results.