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Re: Multi-language support on embedded plarforms

Cross-posted to 2 groups.

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Il 07/09/2017 19:55, Keith Thompson ha scritto:
> pozz <pozzugno@gmail.com> writes:
>> [This message is posted to comp.arch.embedded and comp.lang.c]
>>
>> Just for reference, an embedded platform based on a MCU with
>> integrated Flash, for example a Cortex-Mx device.
>> Here I consider only western languages (left-to-right and european
>> chars, english, french, german, spanish and so on).
>>
>> The main problem is the translation of strings, maybe 10-100 strings.
>>
>> I know something about gettext package that can't be used in those
>> embeded platforms. However I like the approach of gettext.
>>
>>    print_to_display(x, y, "Hello world!");
>>
>> is simply changed in:
>>
>>    #include <gettext.h>
>>    ...
>>    print_to_display(x, y, _("Hello world!"));
> [snip]
> 
> GNU gettext is free software, licensed under GPLv3.  I wonder if you
> could grab a copy of it, remove any functionality you don't need, and
> end up with something small enough to work on your embedded system.
> 
> In a very quick look at the gettext sources, I see that the
> gettext-runtime/src subdirectory contains about 1300 lines of C code.
> If that's all that needs to run on the target system, you might even be
> able to use it without modification.

This is a good suggestion. I'm not an expert of gettext, however I 
remember it loads/search for right strings (based on current language) 
at runtime, looking at the content of a binary file (mo extension).

In my embedded platform I don't have a real filesystem so I can't access 
"files" at runtime.

Maybe I could add the mo files in the output binary file (the image of 
the Flash memory of the MCU) at exact locations and change gettext code 
to look at those fixed addresses instead of accessing files.

Anyway thanks for the suggestions.


> (Any licensing issues are left as an exercise.)

And this is another good point to study.

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Multi-language support on embedded plarforms pozz <pozzugno@gmail.com> - 2017-09-05 09:30 +0200
  Re: Multi-language support on embedded plarforms David Brown <david.brown@hesbynett.no> - 2017-09-05 10:43 +0200
    Re: Multi-language support on embedded plarforms Robert Wessel <robertwessel2@yahoo.com> - 2017-09-05 09:56 -0500
      Re: Multi-language support on embedded plarforms Ian Collins <ian-news@hotmail.com> - 2017-09-06 07:50 +1200
        Re: Multi-language support on embedded plarforms Robert Wessel <robertwessel2@yahoo.com> - 2017-09-05 17:11 -0500
          Re: Multi-language support on embedded plarforms Keith Thompson <kst-u@mib.org> - 2017-09-05 15:17 -0700
            Re: Multi-language support on embedded plarforms Robert Wessel <robertwessel2@yahoo.com> - 2017-09-05 19:19 -0500
              Re: Multi-language support on embedded plarforms raltbos@xs4all.nl (Richard Bos) - 2017-09-09 12:37 +0000
                Re: Multi-language support on embedded plarforms Robert Wessel <robertwessel2@yahoo.com> - 2017-09-09 16:16 -0500
                Re: Multi-language support on embedded plarforms raltbos@xs4all.nl (Richard Bos) - 2017-09-15 17:17 +0000
          Re: Multi-language support on embedded plarforms Allan Herriman <allanherriman@hotmail.com> - 2017-09-06 11:27 +0000
  Re: Multi-language support on embedded plarforms Paul <paul@pcserviceselectronics.co.uk> - 2017-09-05 10:04 +0100
    Re: Multi-language support on embedded plarforms Theo Markettos <theom+news@chiark.greenend.org.uk> - 2017-09-06 10:55 +0100
  Re: Multi-language support on embedded plarforms Phil Hobbs <pcdhSpamMeSenseless@electrooptical.net> - 2017-09-05 17:00 -0400
  Re: Multi-language support on embedded plarforms Keith Thompson <kst-u@mib.org> - 2017-09-07 10:55 -0700
    Re: Multi-language support on embedded plarforms scott@slp53.sl.home (Scott Lurndal) - 2017-09-07 18:41 +0000
    Re: Multi-language support on embedded plarforms pozz <pozzugno@gmail.com> - 2017-09-08 11:33 +0200
      Re: Multi-language support on embedded plarforms bartc <bc@freeuk.com> - 2017-09-08 11:32 +0100
        Re: Multi-language support on embedded plarforms David Brown <david.brown@hesbynett.no> - 2017-09-08 13:37 +0200
          Re: Multi-language support on embedded plarforms bartc <bc@freeuk.com> - 2017-09-08 14:48 +0100
            Re: Multi-language support on embedded plarforms David Brown <david.brown@hesbynett.no> - 2017-09-08 16:45 +0200
  Re: Multi-language support on embedded plarforms Richard Damon <Richard@Damon-Family.org> - 2017-09-08 10:43 -0400
    Re: Multi-language support on embedded plarforms Mel Wilson <mwilson@the-wire.com> - 2017-09-08 17:33 +0000

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