maria-developers team mailing list archive

[Alexander Barkov <bar@xxxxxxxxxxx>]

On 04/18/2013 04:25 PM, Roberto Spadim wrote:
> maybe could port from mb_regex of php?

Possibly mb_regex will work fine. But this needs studies.

One of the goals of the task is to find a library which suites better
our needs, taking into account that it will most likely need some
coding to integrate with MariaDB character sets and collations.

> 2013/4/18 Alexander Barkov <bar@xxxxxxxxxxx <mailto:bar@xxxxxxxxxxx>>
>
>     Hi Tamás,
>
>     On 04/17/2013 09:53 PM, Tamás Kövesdan wrote:
>
>         Hello,
>
>         I'm interested in this project. I have read the other thread about
>         this. I've checked the available regex implementations and I've
>         written a draft application. Is there any potential mentor who would
>         review my application and help to improve it?
>
>
>     Thanks for your interest in this project!
>
>     Please feel free to send your application to me.
>
>     I'll try to write a detailed list of requirements for this
>     task soon. Here is a brief list:
>
>     1. Ideally, after replacing the regex library,
>     the regular expression functions should be able to:
>
>
>     a. Work with all MariaDB character sets:
>     - 8bit
>     - Unicode: utf8, utf16, utf16le, utf32
>     - Asian multi-byte: sjis, cp932, ujis, eucjpms, gbk, gb2312, euckr)
>
>
>     b. Follow the comparison rules defined in MariaDB collation,
>     i.e. take into account things like case and accent sensitivity
>     for the current collation:
>
>     SELECT 'o' RLIKE '<o with diaeresis>' COLLATE utf8_unicode_ci   -> TRUE
>     SELECT 'o' RLIKE '<o with diaeresis>' COLLATE utf8_hungarian_ci -> FALSE
>
>
>     c. Support modern regex features like look-aheads/look-behinds,
>     non-greedy modifiers, may be even recursion, etc.
>
>
>
>     2. The library should be distributed under some permissive library
>     (e.g. LGPL, BSD, MIT, etc). GPL is not desirable.
>
>
>     Greetings.
>
>         Thanks in advance.
>
>         Best whishes,
>         Tamás Kövesdán
>
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> --
> Roberto Spadim
> SPAEmpresarial