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// MARKER(update_precomp.py): autogen include statement, do not remove
#include "precompiled_tools.hxx"

#include <tools/isofallback.hxx>

// -----------------------------------------------------------------------

// Return true if valid fallback found
bool GetIsoFallback(rtl::OString& rLanguage)
{
    rLanguage = rLanguage.trim();
    if (!rLanguage.isEmpty())
    {
        sal_Int32 nSepPos = rLanguage.indexOf('-');
        if (nSepPos == -1)
        {
            if (rLanguage == rtl::OString(RTL_CONSTASCII_STRINGPARAM("en")))
            {
                // en -> ""
                rLanguage = rtl::OString();
                return false;
            }
            else
            {
                // de -> en-US ;
                rLanguage = rtl::OString(RTL_CONSTASCII_STRINGPARAM("en-US"));
                return true;
            }
        }
        else if( !(nSepPos == 1 && (rLanguage.toChar() == 'x' || rLanguage.toChar() == 'X')) )
        {
            // de-CH -> de ;
            // try erase from -
            sal_Int32 nIndex = 0;
            rLanguage = rLanguage.getToken(0, '-', nIndex);
            return true;
        }
    }
    // "" -> ""; x-no-translate -> ""
    rLanguage = rtl::OString();
    return false;
}

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