introduce SvNumberFormatter::FillKeywordTableForExcel()

... to conflate the places that do this on their own.

Change-Id: Idde2173780e0515ad982b4be46fc4df23a7577ad

include/svl/zforlist.hxx

@@ -758,6 +758,10 @@ public:
     /// Fill a NfKeywordIndex table with keywords of a language/country
     void    FillKeywordTable( NfKeywordTable& rKeywords, LanguageType eLang );
 
+    /** Fill a NfKeywordIndex table with keywords usable in Excel export with
+        GetMappedFormatstring() */
+    void    FillKeywordTableForExcel( NfKeywordTable& rKeywords );
+
     /** Return a keyword for a language/country and NfKeywordIndex
         for XML import, to generate number format strings. */
     OUString GetKeyword( LanguageType eLnge, sal_uInt16 nIndex );

svl/source/numbers/zforlist.cxx

@@ -775,6 +775,20 @@ void SvNumberFormatter::FillKeywordTable( NfKeywordTable& rKeywords,
 }
 
 
+void SvNumberFormatter::FillKeywordTableForExcel( NfKeywordTable& rKeywords )
+{
+    FillKeywordTable( rKeywords, LANGUAGE_ENGLISH_US );
+
+    // Remap codes unknown to Excel.
+    rKeywords[ NF_KEY_NN ] = "DDD";
+    rKeywords[ NF_KEY_NNN ] = "DDDD";
+    // NNNN gets a separator appended in SvNumberformat::GetMappedFormatString()
+    rKeywords[ NF_KEY_NNNN ] = "DDDD";
+    // Export the Thai T NatNum modifier.
+    rKeywords[ NF_KEY_THAI_T ] = "T";
+}
+
+
 OUString SvNumberFormatter::GetKeyword( LanguageType eLnge, sal_uInt16 nIndex )
 {
     ChangeIntl(eLnge);