Adding upstream version 4:7.4.7.upstream/4%7.4.7upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 184 insertions, 0 deletions

diff --git a/include/unotools/streamwrap.hxx b/include/unotools/streamwrap.hxx
new file mode 100644
index 000000000..dc4c51807
--- /dev/null
+++ b/include/unotools/streamwrap.hxx
@@ -0,0 +1,184 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ *   Licensed to the Apache Software Foundation (ASF) under one or more
+ *   contributor license agreements. See the NOTICE file distributed
+ *   with this work for additional information regarding copyright
+ *   ownership. The ASF licenses this file to you under the Apache
+ *   License, Version 2.0 (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.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#ifndef INCLUDED_UNOTOOLS_STREAMWRAP_HXX
+#define INCLUDED_UNOTOOLS_STREAMWRAP_HXX
+
+#include <unotools/unotoolsdllapi.h>
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/io/XSeekable.hpp>
+#include <com/sun/star/io/XTruncate.hpp>
+#include <com/sun/star/io/XStream.hpp>
+#include <com/sun/star/lang/XUnoTunnel.hpp>
+#include <comphelper/bytereader.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/implbase1.hxx>
+#include <memory>
+#include <mutex>
+
+class SvStream;
+
+namespace utl
+{
+
+// workaround for incremental linking bugs in MSVC2015
+class SAL_DLLPUBLIC_TEMPLATE OInputStreamWrapper_Base : public cppu::WeakImplHelper< css::io::XInputStream, css::lang::XUnoTunnel > {};
+
+/// helper class for wrapping an SvStream into a com.sun.star.io::XInputStream
+class UNOTOOLS_DLLPUBLIC OInputStreamWrapper : public OInputStreamWrapper_Base, public comphelper::ByteReader
+{
+protected:
+    std::mutex      m_aMutex;
+    SvStream*       m_pSvStream;
+    bool        m_bSvStreamOwner : 1;
+    OInputStreamWrapper()
+                    { m_pSvStream = nullptr; m_bSvStreamOwner = false; }
+    void            SetStream(SvStream* _pStream, bool bOwner )
+                    { m_pSvStream = _pStream; m_bSvStreamOwner = bOwner; }
+
+public:
+    OInputStreamWrapper(SvStream& _rStream);
+    OInputStreamWrapper(SvStream* pStream, bool bOwner=false);
+    OInputStreamWrapper(std::unique_ptr<SvStream> pStream);
+    virtual ~OInputStreamWrapper() override;
+
+// css::io::XInputStream
+    virtual sal_Int32   SAL_CALL    readBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead) override;
+    virtual sal_Int32   SAL_CALL    readSomeBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead) override;
+    virtual void        SAL_CALL    skipBytes(sal_Int32 nBytesToSkip) override;
+    virtual sal_Int32   SAL_CALL    available() override;
+    virtual void        SAL_CALL    closeInput() override;
+
+// css::lang::XUnoTunnel
+    virtual sal_Int64 SAL_CALL getSomething( const css::uno::Sequence< sal_Int8 >& _rIdentifier ) override;
+
+// utl::ByteReader
+    virtual sal_Int32 readSomeBytes( sal_Int8* aData, sal_Int32 nMaxBytesToRead ) final override;
+
+protected:
+    /// throws a NotConnectedException if the object is not connected anymore
+    void checkConnected() const;
+    /// throws an exception according to the error flag of m_pSvStream
+    void checkError() const;
+};
+
+//= OSeekableInputStreamWrapper
+
+/** helper class for wrapping an SvStream into a com.sun.star.io::XInputStream
+    which is seekable (i.e. supports the com.sun.star.io::XSeekable interface).
+*/
+class UNOTOOLS_DLLPUBLIC OSeekableInputStreamWrapper
+        : public cppu::ImplInheritanceHelper< OInputStreamWrapper, css::io::XSeekable >
+{
+protected:
+    OSeekableInputStreamWrapper() {}
+    ~OSeekableInputStreamWrapper() override;
+
+public:
+    OSeekableInputStreamWrapper(SvStream& _rStream);
+    OSeekableInputStreamWrapper(SvStream* _pStream, bool _bOwner = false);
+
+    // XSeekable
+    virtual void SAL_CALL seek( sal_Int64 _nLocation ) override;
+    virtual sal_Int64 SAL_CALL getPosition(  ) override;
+    virtual sal_Int64 SAL_CALL getLength(  ) override;
+};
+
+//= OOutputStreamWrapper
+
+class OOutputStreamWrapper : public cppu::WeakImplHelper<css::io::XOutputStream>
+{
+public:
+    UNOTOOLS_DLLPUBLIC OOutputStreamWrapper(SvStream& _rStream);
+
+protected:
+    virtual ~OOutputStreamWrapper() override;
+
+// css::io::XOutputStream
+    virtual void SAL_CALL writeBytes(const css::uno::Sequence< sal_Int8 >& aData) override;
+    virtual void SAL_CALL flush() override;
+    virtual void SAL_CALL closeOutput() override;
+
+    /// throws an exception according to the error flag of m_pSvStream
+    void checkError() const;
+
+    // TODO: thread safety!
+    SvStream&       rStream;
+};
+
+//= OSeekableOutputStreamWrapper
+
+typedef ::cppu::ImplHelper1 <   css::io::XSeekable
+                            >   OSeekableOutputStreamWrapper_Base;
+/** helper class for wrapping an SvStream into a com.sun.star.io::XOutputStream
+    which is seekable (i.e. supports the com.sun.star.io::XSeekable interface).
+*/
+class UNOTOOLS_DLLPUBLIC OSeekableOutputStreamWrapper final
+                :public OOutputStreamWrapper
+                ,public OSeekableOutputStreamWrapper_Base
+{
+public:
+    OSeekableOutputStreamWrapper(SvStream& _rStream);
+
+private:
+    virtual ~OSeekableOutputStreamWrapper() override;
+
+    // disambiguate XInterface
+    virtual css::uno::Any SAL_CALL queryInterface( const css::uno::Type& _rType ) override;
+    virtual void SAL_CALL acquire(  ) noexcept override
+    { OOutputStreamWrapper::acquire(); }
+    virtual void SAL_CALL release(  ) noexcept override
+    { OOutputStreamWrapper::release(); }
+
+    // XSeekable
+    virtual void SAL_CALL seek( sal_Int64 _nLocation ) override;
+    virtual sal_Int64 SAL_CALL getPosition(  ) override;
+    virtual sal_Int64 SAL_CALL getLength(  ) override;
+};
+
+class UNOTOOLS_DLLPUBLIC OStreamWrapper final
+        : public cppu::ImplInheritanceHelper<OSeekableInputStreamWrapper,
+                                             css::io::XStream,
+                                             css::io::XOutputStream,
+                                             css::io::XTruncate>
+{
+    ~OStreamWrapper() override;
+
+public:
+    OStreamWrapper(SvStream& _rStream);
+    OStreamWrapper(std::unique_ptr<SvStream> _rStream);
+
+// css::io::XStream
+    virtual css::uno::Reference< css::io::XInputStream > SAL_CALL getInputStream(  ) override;
+    virtual css::uno::Reference< css::io::XOutputStream > SAL_CALL getOutputStream(  ) override;
+
+// css::io::XOutputStream
+    virtual void SAL_CALL writeBytes(const css::uno::Sequence< sal_Int8 >& aData) override;
+    virtual void SAL_CALL flush() override;
+    virtual void SAL_CALL closeOutput() override;
+    virtual void SAL_CALL truncate() override;
+};
+
+}
+// namespace utl
+
+#endif // INCLUDED_UNOTOOLS_STREAMWRAP_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */