tdf#115007 NatNum12 "spell out" formats in dates

to support variants of preposition, suffixation,
article or their combination. For example, Catalan
"de març"/"d'abril", English "1st of May"/"First of
May" or Hungarian "május 1-je/május 2-a".

When the date format contains more than a date keyword,
it needs to specify in NatNum12 argument which date
element needs special formatting by using libnumbertext:

'[NatNum12 ordinal-number]D'              -> "1st"
'[NatNum12 D=ordinal-number]D" of "MMMM'  -> "1st of April"
'[NatNum12 D=ordinal]D" of "MMMM'         -> "first of April"
'[NatNum12 YYYY=year,D=ordinal]D" of "MMMM", "YYYY' ->
"first of April, nineteen ninety"

Note: set only for YYYY, MMMM, M, DDDD, D and NNN/AAAA
in date formats. It's possible to extend this for other
keywords and date + time combinations, as required.

Note 2: default l10n date formats can use the new NatNum12 date
formats, see FormatElement in i18npool/source/localedata/
XML files and FormatElement specification:
https://opengrok.libreoffice.org/xref/core/i18npool/source/localedata/data/locale.dtd#223

Change-Id: I598849f1492f4012e83cef9293773badbff16206
Reviewed-on: https://gerrit.libreoffice.org/55613
Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: László Németh <nemeth@numbertext.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/svl/qa/unit/svl.cxx b/svl/qa/unit/svl.cxx
index 45bff9ef2ca1..26b2f6a41588 100644
--- a/svl/qa/unit/svl.cxx
+++ b/svl/qa/unit/svl.cxx
@@ -1394,6 +1394,15 @@ void Test::testUserDefinedNumberFormats()
         sCode = "[NatNum12 ordinal-number]0";
         sExpected = "123rd";
         checkPreviewString(aFormatter, sCode, 123, eLang, sExpected);
+        sCode = "[NatNum12 D=ordinal-number]D\" of \"MMMM";
+        sExpected = "2nd of January";
+        checkPreviewString(aFormatter, sCode, M_PI, eLang, sExpected);
+        sCode = "[NatNum12 D=ordinal-number,YYYY=year]D\" of \"MMMM\", \"YYYY";
+        sExpected = "2nd of January, nineteen hundred";
+        checkPreviewString(aFormatter, sCode, M_PI, eLang, sExpected);
+        sCode = "[NatNum12 YYYY=year, D=ordinal]D\" of \"MMMM\", \"YYYY";
+        sExpected = "second of January, nineteen hundred";
+        checkPreviewString(aFormatter, sCode, M_PI, eLang, sExpected);
 #endif
     }
     {  // tdf#105968 engineering format with value rounded up to next magnitude