Dimitri,
I think it is a good idea.
We have developed language support for different "direction" languages...not
only LTR instead including RTL, TB, BT, MTR etc. It also includes different
calendars etc...
It might be something we could include in that package and then make a pull
request on both.
Stefan
> In qooxdoo's translation mechanism, multiple plural forms are not
> supported. The corresponding issue has been reported almost 10 years
> ago. Time to revise it?
>
> This is essential for many languages, eg. of Baltic and Slavic
> families. Contrary to English, these languages may have, say, one
> plural form to denote 2, 3,4 items and another for >=5 items. For
> example, let's take the word "korova" ("cow" in Russian and Ukrainian):
>
> 1 korova [singluar]
> 2,3,4 korovy [plural 1]
> 5-20 korov [plural 2]
> 21,31,41... korova [plural equals to singular]
> 22,23,24 korovy
> 25-30 korov etc.
>
> The original GNU gettext (which qooxdoo's translation facility is
> modeled after) provides such a mechanism. There is a special "Plural-
> Forms" PO file header that contains:
> - total number of plural forms;
> - a formula to factorize ordinals into classes of plurals. msgstr
> lookup is then done based on the plural class (the result of evaluation
> of the formula), rather than on the ordinal itself.
>
> For Russian, Ukrainian, Belarusian, Serbian and Croatian, the formula
> looks like this:
>
> Plural-Forms: nplurals=3;plural=n%10==1 && n%100!=11 ? 0 : n%10>=2 &&
> n%10<=4 && (n%100<10 || n%100>=20) ? 1 : 2;
>
> With the above, the translation itself would look like this
> (transliterated for better perception):
>
> msgid "cow"
> msgid_plural "cows"
> msgstr[0] "korova"
> msgstr[1] "korovy"
> msgstr[2] "korov"
>
> Per specification, the formula should be a valid C language expression,
> limited to one variable (n).
>
> It would be nice to have it implemented in qooxdoo. However, that would
> require changes in both framework and toolchain. At the moment,
> internal translations structure looks like that:
>
> translations: {
> ...
> "ru": {
> "cow": "korova",
> "cows": "korovy"
> }
> }
>
> This could be changed to:
>
> translations: {
> ...
> "ru": {
> "cow": "korova",
> "cows": [ "korova", "korovy", "korov" ]
> }
> }
>
> and locales structure could contain a function to compute plural form
> from ordinal, created from a Plural-Forms PO header by the compiler. A
> valid C expression will be a valid JavaScript expression, too, and we
> can benefit from this. I've examined several gettext implementations
> for JavaScript; those that do support Plural-Forms simply evaluate this
> expression unchanged as JavaScript. For security purposes, we could
> validate the expression first, to make sure it is restricted to
> arithmetic, logical and ternary operators.
>
> I think that we could start with implementing minimal, non-breaking
> changes in framework, namely internal structure for translations,
> plural classifier in locales, translation logic in tr*() functions.
> Meanwhile, we could experiment with John Spackman's QxCompiler to
> introduce Plural-Form parsing##SELECTION_END##. As soon as POC is
> ready, it can be ported to generate.py or Grunt based toolchain,
> whichever becomes mainstream at that moment.
>
> John, guys, what do you think?
>
> Dimitri
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