Resolves fdo#79276 Add fallback system for autocorrection of French variants

1) Replace the creation of acor_fr-FR.dat by acor_fr.dat since there's no specific for variants of fr
2) Add a fallback system to use it

Change-Id: Ia3e11fff0f266839dc148077b50c1b2f798d1c50
Reviewed-on: https://gerrit.libreoffice.org/9825Reviewed-by: Caolán McNamara <caolanm@redhat.com>
Tested-by: Caolán McNamara <caolanm@redhat.com>

editeng/source/misc/svxacorr.cxx

@@ -1544,7 +1544,7 @@ bool SvxAutoCorrect::CreateLanguageFile( const LanguageTag& rLanguageTag, bool b
 {
     OSL_ENSURE(pLangTable->find(rLanguageTag) == pLangTable->end(), "Language already exists ");
 
-    OUString sUserDirFile( GetAutoCorrFileName( rLanguageTag, true, false ));
+    OUString sUserDirFile( GetAutoCorrFileName( rLanguageTag, true, false, false ));
     OUString sShareDirFile( sUserDirFile );
 
     SvxAutoCorrectLanguageListsPtr pLists = 0;
@@ -1567,10 +1567,15 @@ bool SvxAutoCorrect::CreateLanguageFile( const LanguageTag& rLanguageTag, bool b
             aLastFileTable.erase(nFndPos);
         }
     }
-    else if( ( FStatHelper::IsDocument( sUserDirFile ) ||
+    else if(
+             ( FStatHelper::IsDocument( sUserDirFile ) ||
                FStatHelper::IsDocument( sShareDirFile =
-                              GetAutoCorrFileName( rLanguageTag, false, false ) ) ) ||
-        ( sShareDirFile = sUserDirFile, bNewFile ))
+                   GetAutoCorrFileName( rLanguageTag, false, false, false ) ) ||
+               FStatHelper::IsDocument( sShareDirFile =
+                   GetAutoCorrFileName( rLanguageTag, false, false, true) )
+             ) ||
+        ( sShareDirFile = sUserDirFile, bNewFile )
+          )
     {
         pLists = new SvxAutoCorrectLanguageLists( *this, sShareDirFile, sUserDirFile );
         LanguageTag aTmp(rLanguageTag);     // this insert() needs a non-const reference
@@ -1886,9 +1891,16 @@ bool SvxAutoCorrect::FindInCplSttExceptList(LanguageType eLang,
 }
 
 OUString SvxAutoCorrect::GetAutoCorrFileName( const LanguageTag& rLanguageTag,
-                                            bool bNewFile, bool bTst ) const
+                                            bool bNewFile, bool bTst, bool bUnlocalized ) const
 {
     OUString sRet, sExt( rLanguageTag.getBcp47() );
+    if (bUnlocalized)
+    {
+        // we don't want variant, so we'll take "fr" instead of "fr-CA" for example
+        ::std::vector< OUString > vecFallBackStrings = rLanguageTag.getFallbackStrings(false);
+        if (!vecFallBackStrings.empty())
+           sExt = vecFallBackStrings[0];
+    }
 
     sExt = "_" + sExt + ".dat";
     if( bNewFile )

extras/CustomTarget_autocorr.mk

@@ -23,7 +23,7 @@ extras_AUTOCORR_LANGS := \
 	es:es-ES \
 	fa:fa-IR \
 	fi:fi-FI \
-	fr:fr-FR \
+	fr:fr \
 	ga-IE:ga-IE \
 	hr:hr-HR \
 	hu:hu-HU \

extras/Package_autocorr.mk

@@ -23,7 +23,7 @@ $(eval $(call gb_Package_add_files,extras_autocorr,$(LIBO_SHARE_FOLDER)/autocorr
 	acor_es-ES.dat \
 	acor_fa-IR.dat \
 	acor_fi-FI.dat \
-	acor_fr-FR.dat \
+	acor_fr.dat \
 	acor_ga-IE.dat \
 	acor_hr-HR.dat \
 	acor_hu-HU.dat \

include/editeng/svxacorr.hxx

@@ -329,7 +329,8 @@ public:
     // the default is "autocorr.dat"
     OUString GetAutoCorrFileName( const LanguageTag& rLanguageTag /* = LANGUAGE_SYSTEM */ ,
                                 bool bNewFile = false,
-                                bool bTstUserExist = false ) const;
+                                bool bTstUserExist = false,
+                                bool bUnlocalized = false ) const;
 
     // Query/Set the current settings of AutoCorrect
     long GetFlags() const                       { return nFlags; }

sw/source/core/edit/acorrect.cxx

@@ -340,7 +340,7 @@ bool SwAutoCorrDoc::ChgAutoCorrWord( sal_Int32& rSttPos, sal_Int32 nEndPos,
         }
         else
         {
-            SwTextBlocks aTBlks( rACorrect.GetAutoCorrFileName( aLanguageTag, false, true ));
+            SwTextBlocks aTBlks( rACorrect.GetAutoCorrFileName( aLanguageTag, false, true, false ));
             sal_uInt16 nPos = aTBlks.GetIndex( pFnd->GetShort() );
             if( USHRT_MAX != nPos && aTBlks.BeginGetDoc( nPos ) )
             {