EPI-LI-0001

Title

Better Unicode support

One line summary

Improve efficiency of Unicode operations in Eiffel

Description

Currently EiffelStudio offers STRING_8 and STRING_32 as a data structure to manipulate strings. The later being the one that can hold Unicode characters. Unfortunately, this class does not support most of the Unicode operations such as `to_lower', `to_upper', `index_of', `substring_index', `replace_substring' and ...

The Gobo library provides a Unicode implementation offering the above, but it is largely inefficient in terms of size and most likely speed.

The idea is to look at how other libraries are implementing the Unicode table (e.g. PCRE) and reuse this into Eiffel and to update the FreeELKS library with the added functionality.

Skills needed

Have a somewhat good knowledge of Unicode.

Difficulty

High

Licensing

EFLv2

Documentation

In the Eiffel source code and at http://docs.eiffel.com for user documentation.

Submitter

Eiffel Software

Possible mentor

Undecided