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+/*************************************************************************
+ *
+ *  $RCSfile: streamhelper.hxx,v $
+ *
+ *  $Revision: 1.1.1.1 $
+ *
+ *  last change: $Author: hr $ $Date: 2000-09-18 17:03:54 $
+ *
+ *  The Contents of this file are made available subject to the terms of
+ *  either of the following licenses
+ *
+ *         - GNU Lesser General Public License Version 2.1
+ *         - Sun Industry Standards Source License Version 1.1
+ *
+ *  Sun Microsystems Inc., October, 2000
+ *
+ *  GNU Lesser General Public License Version 2.1
+ *  =============================================
+ *  Copyright 2000 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
+ *
+ *
+ *  Sun Industry Standards Source License Version 1.1
+ *  =================================================
+ *  The contents of this file are subject to the Sun Industry Standards
+ *  Source License Version 1.1 (the "License"); You may not use this file
+ *  except in compliance with the License. You may obtain a copy of the
+ *  License at http://www.openoffice.org/license.html.
+ *
+ *  Software provided under this License is provided on an "AS IS" basis,
+ *  WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING,
+ *  WITHOUT LIMITATION, WARRANTIES THAT THE SOFTWARE IS FREE OF DEFECTS,
+ *  MERCHANTABLE, FIT FOR A PARTICULAR PURPOSE, OR NON-INFRINGING.
+ *  See the License for the specific provisions governing your rights and
+ *  obligations concerning the Software.
+ *
+ *  The Initial Developer of the Original Code is: Sun Microsystems, Inc.
+ *
+ *  Copyright: 2000 by Sun Microsystems, Inc.
+ *
+ *  All Rights Reserved.
+ *
+ *  Contributor(s): _______________________________________
+ *
+ *
+ ************************************************************************/
+#ifndef _UNOTOOLS_STREAMHELPER_HXX_
+#define _UNOTOOLS_STREAMHELPER_HXX_
+
+#ifndef _COM_SUN_STAR_IO_XOUTPUTSTREAM_HPP_
+#include <com/sun/star/io/XOutputStream.hpp>
+#endif
+#ifndef _COM_SUN_STAR_IO_XINPUTSTREAM_HPP_
+#include <com/sun/star/io/XInputStream.hpp>
+#endif
+#ifndef _COM_SUN_STAR_IO_XSEEKABLE_HPP_
+#include <com/sun/star/io/XSeekable.hpp>
+#endif
+#ifndef _OSL_MUTEX_HXX_ //autogen wg. ::osl::Mutex
+#include <osl/mutex.hxx>
+#endif
+#ifndef _CPPUHELPER_IMPLBASE1_HXX_
+#include <cppuhelper/implbase1.hxx>
+#endif
+#ifndef _CPPUHELPER_IMPLBASE2_HXX_
+#include <cppuhelper/implbase2.hxx>
+#endif
+#ifndef _STREAM_HXX
+#include <tools/stream.hxx>
+#endif
+
+namespace utl
+{
+    namespace stario    = ::com::sun::star::io;
+    namespace staruno   = ::com::sun::star::uno;
+
+/**
+ * The helper implementation for a using input streams based on SvLockBytes.
+ *
+ * @author  Dirk Grobler
+ * @since   00/28/03
+ */
+    typedef ::cppu::WeakImplHelper2<stario::XInputStream, stario::XSeekable> InputStreamHelper_Base;
+    // needed for some compilers
+class OInputStreamHelper : public InputStreamHelper_Base
+{
+    ::osl::Mutex    m_aMutex;
+    SvLockBytesRef  m_xLockBytes;
+    sal_uInt32      m_nActPos;
+    sal_Int32       m_nAvailable;   // this is typically the chunk(buffer) size
+
+public:
+    OInputStreamHelper(const SvLockBytesRef& _xLockBytes,
+                       sal_uInt32 _nAvailable,
+                       sal_uInt32 _nPos = 0)
+        :m_xLockBytes(_xLockBytes)
+        ,m_nActPos(_nPos)
+        ,m_nAvailable(_nAvailable){}
+
+// staruno::XInterface
+    virtual void SAL_CALL acquire() throw (staruno::RuntimeException);
+    virtual void SAL_CALL release() throw (staruno::RuntimeException);
+
+// stario::XInputStream
+    virtual sal_Int32 SAL_CALL readBytes( staruno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
+    virtual sal_Int32 SAL_CALL readSomeBytes( staruno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
+    virtual void SAL_CALL skipBytes( sal_Int32 nBytesToSkip ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
+    virtual sal_Int32 SAL_CALL available(  ) throw(stario::NotConnectedException, stario::IOException, staruno::RuntimeException);
+    virtual void SAL_CALL closeInput(  ) throw (stario::NotConnectedException, stario::IOException, staruno::RuntimeException);
+
+    virtual void SAL_CALL seek( sal_Int64 location ) throw(::com::sun::star::lang::IllegalArgumentException, ::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+    virtual sal_Int64 SAL_CALL getPosition(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+    virtual sal_Int64 SAL_CALL getLength(  ) throw(::com::sun::star::io::IOException, ::com::sun::star::uno::RuntimeException);
+};
+
+/**
+ * The helper implementation for a using output streams based on SvLockBytes.
+ *
+ * @author  Dirk Grobler
+ * @since   00/28/03
+ */
+typedef ::cppu::WeakImplHelper1<stario::XOutputStream> OutputStreamHelper_Base;
+    // needed for some compilers
+class OOutputStreamHelper : public OutputStreamHelper_Base
+{
+    ::osl::Mutex    m_aMutex;
+    SvLockBytesRef  m_xLockBytes;
+    sal_uInt32      m_nActPos;
+
+public:
+    OOutputStreamHelper(const SvLockBytesRef& _xLockBytes, sal_uInt32 _nPos = 0)
+        :m_xLockBytes(_xLockBytes)
+        ,m_nActPos(_nPos){}
+
+// staruno::XInterface
+    virtual void SAL_CALL acquire() throw (staruno::RuntimeException);
+    virtual void SAL_CALL release() throw (staruno::RuntimeException);
+
+// stario::XOutputStream
+    virtual void SAL_CALL writeBytes( const staruno::Sequence< sal_Int8 >& aData ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
+    virtual void SAL_CALL flush(  ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
+    virtual void SAL_CALL closeOutput(  ) throw(stario::NotConnectedException, stario::BufferSizeExceededException, stario::IOException, staruno::RuntimeException);
+};
+
+}   // namespace utl
+
+
+#endif // _UNOTOOLS_STREAM_WRAPPER_HXX_
+