[icu-design] ICU API proposal: IDNA CONTEXTO check

[Markus S. <mar...@gm...>]

Dear ICU team & users,

I would like to propose the following API for: *ICU 49*
Please provide feedback by: *next Tuesday, 2011-06-28*
Designated API reviewer: *Mark*
Ticket: http://bugs.icu-project.org/trac/ticket/*8615*<http://bugs.icu-project.org/trac/ticket/8615>

Java class IDNA:
    /**
     * IDNA option to check for whether the input conforms to the CONTEXTO
rules.
     * This option is ignored by the IDNA2003 implementation.
     * (The CONTEXTO check is new in IDNA2008.)
     * This is for use by registries for IDNA2008 conformance.
     * UTS #46 does not require the CONTEXTO check.
     * @draft ICU 49
     * @provisional This API might change or be removed in a future release.
     */
    public static final int CHECK_CONTEXTO = 0x40;

C uidna.h:
    UIDNA_CHECK_CONTEXTO

Java enum IDNA.Error:
        /**
         * A label does not meet the IDNA CONTEXTO requirements for
punctuation characters.
         * Some punctuation characters "Would otherwise have been
DISALLOWED"
         * but are allowed in certain contexts. (RFC 5892)
         * @draft ICU 49
         * @provisional This API might change or be removed in a future
release.
         */
        CONTEXTO_PUNCTUATION,
        /**
         * A label does not meet the IDNA CONTEXTO requirements for digits.
         * Arabic-Indic Digits (U+066x) must not be adjacent to Extended
Arabic-Indic Digits (U+06Fx).
         * @draft ICU 49
         * @provisional This API might change or be removed in a future
release.
         */
        CONTEXTO_DIGITS

C uidna.h:
    UIDNA_ERROR_CONTEXTO_PUNCTUATION
    UIDNA_ERROR_CONTEXTO_DIGITS

Sincerely,
markus