[Oberon] Portings Texts.Mod to Oberon-7, my Artemis project

Charles Perkins chuck at kuracali.com
Fri Jun 18 23:36:13 CEST 2021

Hello Oleg,

Regarding UTF8 and Unicode in Oberon, you might like to know that some work
has already been done.

Michael Shierl has provided some patches
to Oberon-O7 in support of utf8 and fonts with large numbers of glyphs in
them, which I adopted and wrote a technote about.

I suggest looking at
https://github.com/io-core/technotes/blob/main/technote003.md to see one
way of doing it... Ignore the bits about PCF but see the bits about the
changes made to Fonts, Texts, TextFrames, Edit, etc. to support
utf8-encoded glyphs in Oberon-07.

I like what Michael did and I would like to see TextFrames further extended
to glyph composition and bi-directional text flow, etc.

Best Regards,

On Wed, Jun 16, 2021 at 7:39 PM Oleg N. Cher <allot at bk.ru> wrote:

> Dear Robert,
> You may not have known this, but Ofront by Josef Templ has a successor -
> this is the Ofront+ (https://github.com/Oleg-N-Cher/OfrontPlus). It
> supports various UNIX-like (both 32-bit and 64-bit), as well as macOS
> and Windows. Also I tested this under Linux Armbian on Orange Pi PC Plus
> (ARMv7 architecture).
> Also it has five input languages, including Oberon-07/16 and Component
> Pascal. The support for Oberon-07 was done rather hastily, I can't call
> it completed. But I'm interested in improving it. Therefore, I would be
> very grateful if you take Ofront+ as one of the translators for build
> the Artemis.
> It should probably be noted here that I am interested in the industrial
> application of Oberon-07, and not in academic adherence to the canons of
> extreme simplicity. So I will support both language extensions and also
> things that seem reasonable to me.
> Also, I just recently thought about the need to support UTF-8 as one of
> input text format for Ofront+. I do not know what this might look like
> in Oberon-07, where the CHAR type size is not fixed, which is likely to
> cause a lot of problems. But I will probably have to develop something
> like the Texts module, which should support at the input ANSI, UTF-8
> encoded text, and I will definitely need support of the .odc format from
> BlackBox Component Builder. The output will be a two-byte CHAR type.
>   even more than sure that you don't need support of .odc format, as
> well as Component Pascal language. But I decided to inform you anyway.
> Thank you for developing Artemis, I will follow your development.
> Robert Doiel пишет:
> > This list discussion around Oberon Texts has been inspiring. It is been
> so
> > inspiring I've create a GitHub repository  named Artemis:
> >
> >  > Artemis is an Oberon-7 module collection. My hope is
> >  > to encourage continued use and development of the Oberon-7
> >  > language and encourage convergence towards compatibility
> >  > in implementations of Oberon-7 compilers.
> >
> >
> > This ties back to the Texts discussion in one significant way. I am
> > planning
> > to port both S3 (Native Oberon) Texts.Mod and V4 (Linz) Texts (Texts.Mod,
> > Elem.Mod, etc) to Oberon-7.  That code will wind up in Artemis and be
> > used to
> > implement an "ocat" (like Joseph Templ's ocat from ofront) that will
> > work for
> > each of the type of Texts.
> >
> > I've looked at each implementation and I think unifying them is beyond my
> > skill but porting each one would be extremely useful, especially from a
> > preservation point of view.
> >
> > I am not promising fast (or successful) development.  I am one of those
> > dreaded hobbyist when it comes to Oberon.  I think the collection will be
> > useful as it evolves.  It is likely to hold my interest for quite some
> > time.
> > I think it will be especially for useful for fellow novices exploring
> > Oberon-7 on POSIX.
> >
> >     https://github.com/rsdoiel/Artemis
> >
> > Feed back welcome, criticism is helpful, pull request exciting. You can
> > reach me on this email list and via GitHub issue
> > (https://github.com/rsdoiel/Artemis/issues).
> >
> > All the best,
> >
> > Robert Doiel
> >
> >
> > --
> > Oberon at lists.inf.ethz.ch mailing list for ETH Oberon and related systems
> > https://lists.inf.ethz.ch/mailman/listinfo/oberon
> --
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