Re: Arabic Implementation

From: Nitin Kapoor (nitinkapooro@hotmail.com)
Date: Wed Aug 18 2004 - 00:41:59 CDT

  • Next message: Doug Ewell: "Re: Arabic Implementation"

    Dear Chris,

    Thanks for your response, so what you are suggesting is that the Unicode
    does not change but only the display glyph should change right.

    Currently, the implementation I am following is that once the user types in
    a particular key say: 0x0622 , I look for the joining type of the character
    and then on the basis of the joining type of the character and its neighbors
      I look up the Display form of the current character in Presentation form B
    and then I ask my Display Module to display the glyph matching to this
    Presentation form (Unicode).

    If I donˇ¦t use the Unicode values of Arabic presentation form B then how
    will my display know which particular glyph to display? using the Unicode
    values of presentation form B makes this easier but then the original
    Unicode changes.

    I am sorry but I am a bit confused with what to display and what Unicode to
    store, your comments would be really help full.

    Thanks & Regards,

    Nitin

    >From: "Chris Jacobs" <chris.jacobs@freeler.nl>
    >To: <unicode@unicode.org>, "Nitin Kapoor" <nitinkapooro@hotmail.com>
    >Subject: Re: Arabic Implementation
    >Date: Wed, 18 Aug 2004 04:44:09 +0200
    >
    >
    >----- Original Message -----
    >From: "Nitin Kapoor" <nitinkapooro@hotmail.com>
    >To: <unicode@unicode.org>
    >Cc: <nitinkapooro@hotmail.com>
    >Sent: Wednesday, August 18, 2004 3:38 AM
    >Subject: Arabic Implementation
    >
    >
    > > Hello Friends,
    > >
    > > I am implementing ARABIC in one of our embedded projects .I have read
    >the
    > > Unicode standard well and would like to ask a question about joining
    >types.
    > >
    > > After a character changes the display form into one mentioned in Arabic
    > > Presentation Form B does it still belong to a joining type.
    > >
    > > For example: Lets say Unicode Character : 0x0622 which is a right
    >joining
    > > type , when this changes the display form into ISOLATED FORM its Unicode
    > > becomes : 0xfe81.
    >
    >NO. When 0x0622 changes its display form into ISOLATED FORM because of
    >context it still stays 0x0622.
    >Only the glyph changes, not the underlying char.
    >
    > > So does 0xfe81 also belong to Right Joining type?
    >
    >If it is really a 0xfe81 char, encoded as such, then no.
    >
    > > I am asking this question
    > > because according to Derived Joining Type .txt provided by UNICODE, it
    > > doesnˇ¦t have any category for characters once they change their display
    > > form.
    > >
    > > I personally feel that a particular character belonging to a particular
    > > joining type will have all its different display forms also belonging to
    >the
    > > particular joining type .
    >
    >Which is indeed what happpens if you avoid using the presentation form code
    >points, as you should.
    >
    > > Please advice me if I am on the right track.
    > >
    > > Thanks
    > >
    > > Nitin
    > >
    > > _________________________________________________________________
    > > Apply to 50,000 jobs now. http://go.msnserver.com/IN/46921.asp Post
    >your CV
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    > >
    > >
    > >
    >
    >

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