Adding upstream version 1:7.0.4.upstream/1%7.0.4upstream

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

1 files changed, 126 insertions, 0 deletions

diff --git a/include/comphelper/seqstream.hxx b/include/comphelper/seqstream.hxx
new file mode 100644
index 000000000..6ea3ebc2c
--- /dev/null
+++ b/include/comphelper/seqstream.hxx
@@ -0,0 +1,126 @@
+/* -*- 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_COMPHELPER_SEQSTREAM_HXX
+#define INCLUDED_COMPHELPER_SEQSTREAM_HXX
+
+#include <config_options.h>
+#include <com/sun/star/uno/Sequence.hxx>
+#include <com/sun/star/io/XInputStream.hpp>
+#include <com/sun/star/io/XOutputStream.hpp>
+#include <com/sun/star/io/XSeekable.hpp>
+#include <osl/mutex.hxx>
+#include <cppuhelper/implbase.hxx>
+#include <comphelper/comphelperdllapi.h>
+
+namespace comphelper
+{
+
+
+// SequenceInputStream
+// stream for reading data from a sequence of bytes
+
+
+class COMPHELPER_DLLPUBLIC SequenceInputStream final
+    : public ::cppu::WeakImplHelper< css::io::XInputStream, css::io::XSeekable >
+{
+    ::osl::Mutex    m_aMutex;
+    css::uno::Sequence<sal_Int8> const m_aData;
+    sal_Int32       m_nPos;
+
+public:
+    SequenceInputStream(css::uno::Sequence<sal_Int8> const & rData);
+
+// 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;
+
+    virtual void SAL_CALL seek( sal_Int64 location ) override;
+    virtual sal_Int64 SAL_CALL getPosition(  ) override;
+    virtual sal_Int64 SAL_CALL getLength(  ) override;
+
+private:
+    inline sal_Int32 avail();
+};
+
+// don't export to avoid duplicate WeakImplHelper definitions with MSVC
+class SAL_DLLPUBLIC_TEMPLATE OSequenceOutputStream_Base
+    : public ::cppu::WeakImplHelper< css::io::XOutputStream >
+{};
+
+class UNLESS_MERGELIBS(COMPHELPER_DLLPUBLIC) OSequenceOutputStream final : public OSequenceOutputStream_Base
+{
+private:
+    void finalizeOutput();
+    css::uno::Sequence< sal_Int8 >&                 m_rSequence;
+    double                                          m_nResizeFactor;
+    sal_Int32 const                                 m_nMinimumResize;
+    sal_Int32                                       m_nSize;
+        // the size of the virtual stream. This is not the size of the sequence, but the number of bytes written
+        // into the stream at a given moment.
+
+    bool                                            m_bConnected;
+        // closeOutput has been called ?
+
+    ::osl::Mutex                                    m_aMutex;
+
+    virtual ~OSequenceOutputStream() override { if (m_bConnected) finalizeOutput(); }
+
+public:
+    /** constructs the object. Everything written into the stream through the XOutputStream methods will be forwarded
+        to the sequence, reallocating it if necessary. Writing will start at offset 0 within the sequence.
+        @param      _rSeq               a reference to the sequence which will be used for output.
+                                        The caller is responsible for taking care of the lifetime of the stream
+                                        object and the sequence. If you're in doubt about this, use <code>closeOutput</code>
+                                        before destroying the sequence
+        @param      _nResizeFactor      the factor which is used for resizing the sequence when necessary. In every
+                                        resize step, the new sequence size will be calculated by multiplying the current
+                                        size with this factor, rounded off to the next multiple of 4.
+        @param      _nMinimumResize     the minimal number of bytes which is additionally allocated on resizing
+        @see        closeOutput
+    */
+    OSequenceOutputStream(
+        css::uno::Sequence< sal_Int8 >& _rSeq,
+        double _nResizeFactor = 1.3,
+        sal_Int32 _nMinimumResize = 128
+        );
+
+    /// same as XOutputStream::writeBytes (as expected :)
+    virtual void SAL_CALL writeBytes( const css::uno::Sequence< sal_Int8 >& aData ) override;
+    /// this is a dummy in this implementation, no buffering is used
+    virtual void SAL_CALL flush(  ) override;
+    /** closes the output stream. In the case of this class, this means that the sequence used for writing is
+        resized to the really used size and not used any further, every subsequent call to one of the XOutputStream
+        methods will throw a <code>NotConnectedException</code>.
+    */
+    virtual void SAL_CALL closeOutput(  ) override;
+};
+
+} // namespace comphelper
+
+#endif // INCLUDED_COMPHELPER_SEQSTREAM_HXX
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */