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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * Copyright 2008 by Sun Microsystems, Inc.
 *
 * OpenOffice.org - a multi-platform office productivity suite
 *
 * $RCSfile: isofallback.cxx,v $
 * $Revision: 1.6 $
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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
sal_Bool GetIsoFallback( ByteString& rLanguage )
{
    rLanguage.EraseLeadingAndTrailingChars();
    if( rLanguage.Len() ){
        xub_StrLen nSepPos = rLanguage.Search( '-' );
        if ( nSepPos == STRING_NOTFOUND ){
            if ( rLanguage.Equals("en"))
            {
                // en -> ""
                rLanguage.Erase();
                return false;
            }
            else
            {
                // de -> en-US ;
                rLanguage = ByteString("en-US");
                return true;
            }
        }
        else if( !( nSepPos == 1 && ( rLanguage.GetChar(0) == 'x' || rLanguage.GetChar(0) == 'X' ) ) )
        {
            // de-CH -> de ;
            // try erase from -
            rLanguage = rLanguage.GetToken( 0, '-');
            return true;
        }
    }
    // "" -> ""; x-no-translate -> ""
    rLanguage.Erase();
    return false;
}