[omniORB] MacRoman codeset for Mac OS X?

[Steve Sauder]

Hi:

We've been using omniORB 4 for some time now to have our Mac OS-based client application communicate with our server-side server side objects, with good success.  However, I've recently been required to support foreign character sets, and in delving into the omniORB codeset implementations, I noticed that the default codeset for omniORB is ISO-8859-1, and that it doesn't appear that there even is a NCS_C variant for Mac Roman.

Is this correct?  Will I need to write my own?

One avenue that I was looking into was the use of CORBA::WString instead CORBA::String and just sending Unicode.  While I was checking all this out, I discovered another interesting thing - apparently under the XCODE build environment on Mac, sizeof(wchar_t) is, in fact, 4, so sending WString data actually entails a great deal of overhead, as each 4-byte wchar_t must be copied to/from a 2-byte UniChar during marshaling and unmarshaling.  There's apparently a whole can of worms associated with sizeof(wchar_t) being 4 on Mac, since Apple's own Unicode implementation (CFString), uses UTF-16, effectively rendering wchar_t useless on Mac OS.  I was relieved to find, in "local_config.h", a way of forcing the omniORB build to define CORBA::WChar as a 2-byte entity.  By doing that, I'm hoping to be able to support native Unicode strings, but the question above still holds for all of our existing IDL's which use 1-byte strings.       


Thanks!
Steve.
--------------------------------------------------
Steve Sauder
Chief Technical Officer
North Plains Systems Corp.

P: 416 345 1900 x 500
ssauder at northplains.com

www.northplains.com

"Bringing FOCUS to Digital Asset Management"

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