/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: macro_expander.cxx,v $
 *
 *  $Revision: 1.10 $
 *
 *  last change: $Author: obo $ $Date: 2006-09-16 12:41:36 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

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

#include <rtl/bootstrap.hxx>

#include <cppuhelper/factory.hxx>
#include <cppuhelper/implbase3.hxx>
#include <cppuhelper/compbase3.hxx>
#include <cppuhelper/component_context.hxx>

#include <com/sun/star/lang/XServiceInfo.hpp>
#include <com/sun/star/lang/XInitialization.hpp>
#include <com/sun/star/util/XMacroExpander.hpp>
#include "com/sun/star/uno/RuntimeException.hpp"

#define OUSTR(x) ::rtl::OUString( RTL_CONSTASCII_USTRINGPARAM(x) )
#define SERVICE_NAME_A "com.sun.star.lang.MacroExpander"
#define SERVICE_NAME_B "com.sun.star.lang.BootstrapMacroExpander"
#define IMPL_NAME "com.sun.star.lang.comp.cppuhelper.BootstrapMacroExpander"


using namespace ::rtl;
using namespace ::osl;
using namespace ::com::sun::star;
using namespace ::com::sun::star::uno;

namespace cppu
{
//---- private forward -----------------------------------------------------------------------------
Bootstrap const & get_unorc() SAL_THROW( () );
}

namespace
{
inline OUString s_impl_name() { return OUSTR(IMPL_NAME); }
static Sequence< OUString > const & s_get_service_names()
{
    static Sequence< OUString > const * s_pnames = 0;
    if (! s_pnames)
    {
        MutexGuard guard( Mutex::getGlobalMutex() );
        if (! s_pnames)
        {
            static Sequence< OUString > s_names( 2 );
            s_names[ 0 ] = OUSTR(SERVICE_NAME_A);
            s_names[ 1 ] = OUSTR(SERVICE_NAME_B);
            s_pnames = &s_names;
        }
    }
    return *s_pnames;
}

typedef ::cppu::WeakComponentImplHelper3<
    util::XMacroExpander, lang::XServiceInfo, lang::XInitialization > t_uno_impl;

struct mutex_holder
{
    Mutex m_mutex;
};
class Bootstrap_MacroExpander : public mutex_holder, public t_uno_impl
{
    rtlBootstrapHandle m_bstrap;
    OUString m_rc_path;

protected:
    virtual void SAL_CALL disposing();

public:
    inline Bootstrap_MacroExpander( Reference< XComponentContext > const & ) SAL_THROW( () )
        : t_uno_impl( m_mutex ),
          m_bstrap( 0 )
        {}
    virtual ~Bootstrap_MacroExpander()
        SAL_THROW( () );

    // XMacroExpander impl
    virtual OUString SAL_CALL expandMacros( OUString const & exp )
        throw (lang::IllegalArgumentException);
    //  XInitialization impl
    virtual void SAL_CALL initialize(
        Sequence< Any > const & arguments )
        throw (Exception);
    // XServiceInfo impl
    virtual OUString SAL_CALL getImplementationName()
        throw (RuntimeException);
    virtual sal_Bool SAL_CALL supportsService( OUString const & serviceName )
        throw (RuntimeException);
    virtual Sequence< OUString > SAL_CALL getSupportedServiceNames()
        throw (RuntimeException);
};

//__________________________________________________________________________________________________
void Bootstrap_MacroExpander::disposing()
{
    rtlBootstrapHandle h;
    {
        osl::MutexGuard g(m_mutex);
        h = m_bstrap;
        m_bstrap = 0;
    }
    if (h) {
        rtl_bootstrap_args_close(h);
    }
}
//__________________________________________________________________________________________________
Bootstrap_MacroExpander::~Bootstrap_MacroExpander() SAL_THROW( () )
{
    disposing();
}

// XServiceInfo impl
//__________________________________________________________________________________________________
OUString Bootstrap_MacroExpander::getImplementationName()
    throw (RuntimeException)
{
    return s_impl_name();
}
//__________________________________________________________________________________________________
sal_Bool Bootstrap_MacroExpander::supportsService( OUString const & serviceName )
    throw (RuntimeException)
{
    Sequence< OUString > const & service_names = s_get_service_names();
    OUString const * p = service_names.getConstArray();
    for ( sal_Int32 nPos = service_names.getLength(); nPos--; )
    {
        if (p[ nPos ].equals( serviceName ))
            return sal_True;
    }
    return sal_False;
}
//__________________________________________________________________________________________________
Sequence< OUString > Bootstrap_MacroExpander::getSupportedServiceNames()
    throw (RuntimeException)
{
    return s_get_service_names();
}
//  XInitialization impl
//__________________________________________________________________________________________________
void SAL_CALL Bootstrap_MacroExpander::initialize(
    Sequence< Any > const & arguments )
    throw (Exception)
{
    if (m_bstrap)
    {
        throw RuntimeException(
            OUSTR("already initialized!"),
            Reference< XInterface >() );
    }
    if (1 != arguments.getLength())
    {
        throw lang::IllegalArgumentException(
            OUSTR("invalid number of args given!  give single file url!"),
            Reference< XInterface >(),
            0 );
    }
    if (! (arguments[ 0 ] >>= m_rc_path))
    {
        throw lang::IllegalArgumentException(
            OUSTR("give file url!"),
            Reference< XInterface >(),
            0 );
    }
}

// XMacroExpander impl
//__________________________________________________________________________________________________
OUString Bootstrap_MacroExpander::expandMacros( OUString const & exp )
    throw (lang::IllegalArgumentException)
{
    rtlBootstrapHandle h;
    if (m_rc_path.getLength() != 0) {
        osl::MutexGuard g(m_mutex);
        if (!m_bstrap) {
            m_bstrap = rtl_bootstrap_args_open(m_rc_path.pData);
        }
        h = m_bstrap;
    } else {
        h = cppu::get_unorc().getHandle();
    }
    OUString ret( exp );
    rtl_bootstrap_expandMacros_from_handle( h, &ret.pData );
    return ret;
}

//==================================================================================================
Reference< XInterface > SAL_CALL service_create(
    Reference< XComponentContext > const & xComponentContext )
    SAL_THROW( (RuntimeException) )
{
    return static_cast< ::cppu::OWeakObject * >( new Bootstrap_MacroExpander( xComponentContext ) );
}

}

namespace cppu
{

//##################################################################################################
Reference< lang::XSingleComponentFactory > create_boostrap_macro_expander_factory() SAL_THROW( () )
{
    return ::cppu::createSingleComponentFactory(
        service_create,
        s_impl_name(),
        s_get_service_names() );
}

}
