utf8_char_index

Actually, I wish to do it on a whole list of numbers (at least 2), unfortunately unsorted. That could be optimized.

It's the exec() function in pcre that gives useful indexes, and I was pondering to give the widestring wrapper object the correct result (= character offsets) from that function, not byteoffsets.

I also need the reverse function for continued search (start_index).

/ Mirar

Previous text:

2003-09-24 12:25: Subject: utf8_char_index

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It's probably not possible to do it all that much faster than strlen(utf8_to_string( X[..offset])).

The only thing you can skip is the string generation. It's always O(n) to go from byte index to character index in UTF-8.

/ Per Hedbor ()