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freetds - RE: WORDS_BIGENDIAN (was RE: [freetds] Running FreeTDS under VMS)

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  • From: "ZIGLIO Frediano" <Frediano.Ziglio AT vodafoneomnitel.it>
  • To: "FreeTDS Development Group" <freetds AT lists.ibiblio.org>
  • Subject: RE: WORDS_BIGENDIAN (was RE: [freetds] Running FreeTDS under VMS)
  • Date: Mon, 5 May 2003 14:26:45 +0200

>
> On Mon, 5 May 2003 13:49:07 +0200, "Bernard Giroud"
> <bernard.giroud AT creditlyonnais.ch> wrote:
> > But one of this change is the hardcoding of UCS-2LE in
> tds_iconv_open.
> > VMS only knows UCS-2. So iconv_open doesn't work, and because
> > initialization is not aborted, it keeps sending something the server
> > doesn't understand.
>
> I would never have predicted that one of the first "victims" of iconv
> would be a fellow in Switzerland using VMS. :-)
>
> The way I suggest we fix this:
>
> 1. Patch sybase_character_sets.h such that tds_canonical_charset_name
> returns "UCS-2" when passed "UCS-2LE", when compiled for VMS.
>

This problem is common to many iconv version. ie HP/UX do not have UCS-2LE
name.
My intention is:
1- check if we have GNU iconv
2- check names using configure (source use encoded ISO-8859-1, UCS-2LE, UTF-8
and UCS-4, for the moment)

Some platform do not have UCS-4 or UCS-2LE (HP/UX 10.20 have ucs2 but is only
big endian)

> 2. Replace hard-coded entry with
> 'tds_canonical_charset_name("UCS-2LE")'.
>

This raise another problem. What's the "canonical charset" definition? Is the
name to use for iconv functions? It's the more standard name?
Calling tds_canonical_charset_name("UCS-2LE") in some place reduce
performance... My intention is to define source coded in config.h
(TDS_CHARSET_UCS4, HAVE_CHARSET_UCS4 and similar).

>
> I think that will do the trick. Naturally I'm open to suggestions.
>

I'm doing some brute force tests with charset to detect ascii compatibility
and others things...

freddy77




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