1 files changed, 215 insertions, 0 deletions
diff --git a/comphelper/source/streaming/seqinputstreamserv.cxx b/comphelper/source/streaming/seqinputstreamserv.cxx
new file mode 100644
index 000000000..5d10029a5
--- /dev/null
+++ b/comphelper/source/streaming/seqinputstreamserv.cxx
@@ -0,0 +1,215 @@
+/* -*- 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 .
+ */
+
+#include <sal/config.h>
+
+#include <cppuhelper/implbase.hxx>
+#include <cppuhelper/supportsservice.hxx>
+#include <comphelper/seqstream.hxx>
+#include <com/sun/star/lang/IllegalArgumentException.hpp>
+#include <com/sun/star/lang/XServiceInfo.hpp>
+#include <com/sun/star/io/NotConnectedException.hpp>
+#include <com/sun/star/io/XSeekableInputStream.hpp>
+#include <com/sun/star/lang/XInitialization.hpp>
+#include <com/sun/star/frame/DoubleInitializationException.hpp>
+#include <mutex>
+
+namespace com::sun::star::uno { class XComponentContext; }
+
+using namespace ::com::sun::star;
+
+namespace {
+
+class SequenceInputStreamService:
+    public ::cppu::WeakImplHelper<
+        lang::XServiceInfo,
+        io::XSeekableInputStream,
+        lang::XInitialization>
+{
+public:
+    explicit SequenceInputStreamService();
+
+    // noncopyable
+    SequenceInputStreamService(const SequenceInputStreamService&) = delete;
+    const SequenceInputStreamService& operator=(const SequenceInputStreamService&) = delete;
+
+    // css::lang::XServiceInfo:
+    virtual OUString SAL_CALL getImplementationName() override;
+    virtual sal_Bool SAL_CALL supportsService( const OUString & ServiceName ) override;
+    virtual uno::Sequence< OUString > SAL_CALL getSupportedServiceNames() override;
+
+    // css::io::XInputStream:
+    virtual ::sal_Int32 SAL_CALL readBytes( uno::Sequence< ::sal_Int8 > & aData, ::sal_Int32 nBytesToRead ) override;
+    virtual ::sal_Int32 SAL_CALL readSomeBytes( 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::io::XSeekable:
+    virtual void SAL_CALL seek( ::sal_Int64 location ) override;
+    virtual ::sal_Int64 SAL_CALL getPosition() override;
+    virtual ::sal_Int64 SAL_CALL getLength() override;
+
+    // css::lang::XInitialization:
+    virtual void SAL_CALL initialize( const uno::Sequence< css::uno::Any > & aArguments ) override;
+
+private:
+    virtual ~SequenceInputStreamService() override {}
+
+
+    std::mutex m_aMutex;
+    bool m_bInitialized;
+    uno::Reference< io::XInputStream > m_xInputStream;
+    uno::Reference< io::XSeekable > m_xSeekable;
+};
+
+SequenceInputStreamService::SequenceInputStreamService()
+: m_bInitialized( false )
+{}
+
+// com.sun.star.uno.XServiceInfo:
+OUString SAL_CALL SequenceInputStreamService::getImplementationName()
+{
+    return "com.sun.star.comp.SequenceInputStreamService";
+}
+
+sal_Bool SAL_CALL SequenceInputStreamService::supportsService( OUString const & serviceName )
+{
+    return cppu::supportsService(this, serviceName);
+}
+
+uno::Sequence< OUString > SAL_CALL SequenceInputStreamService::getSupportedServiceNames()
+{
+    return { "com.sun.star.io.SequenceInputStream" };
+}
+
+// css::io::XInputStream:
+::sal_Int32 SAL_CALL SequenceInputStreamService::readBytes( uno::Sequence< ::sal_Int8 > & aData, ::sal_Int32 nBytesToRead )
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xInputStream.is() )
+        throw io::NotConnectedException();
+
+    return m_xInputStream->readBytes( aData, nBytesToRead );
+}
+
+::sal_Int32 SAL_CALL SequenceInputStreamService::readSomeBytes( uno::Sequence< ::sal_Int8 > & aData, ::sal_Int32 nMaxBytesToRead )
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xInputStream.is() )
+        throw io::NotConnectedException();
+
+    return m_xInputStream->readSomeBytes( aData, nMaxBytesToRead );
+}
+
+void SAL_CALL SequenceInputStreamService::skipBytes( ::sal_Int32 nBytesToSkip )
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xInputStream.is() )
+        throw io::NotConnectedException();
+
+    return m_xInputStream->skipBytes( nBytesToSkip );
+}
+
+::sal_Int32 SAL_CALL SequenceInputStreamService::available()
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xInputStream.is() )
+        throw io::NotConnectedException();
+
+    return m_xInputStream->available();
+}
+
+void SAL_CALL SequenceInputStreamService::closeInput()
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xInputStream.is() )
+        throw io::NotConnectedException();
+
+    m_xInputStream->closeInput();
+    m_xInputStream.clear();
+    m_xSeekable.clear();
+}
+
+// css::io::XSeekable:
+void SAL_CALL SequenceInputStreamService::seek( ::sal_Int64 location )
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xSeekable.is() )
+        throw io::NotConnectedException();
+
+    m_xSeekable->seek( location );
+}
+
+::sal_Int64 SAL_CALL SequenceInputStreamService::getPosition()
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xSeekable.is() )
+        throw io::NotConnectedException();
+
+    return m_xSeekable->getPosition();
+}
+
+::sal_Int64 SAL_CALL SequenceInputStreamService::getLength()
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( !m_xSeekable.is() )
+        throw io::NotConnectedException();
+
+    return m_xSeekable->getLength();
+}
+
+// css::lang::XInitialization:
+void SAL_CALL SequenceInputStreamService::initialize( const uno::Sequence< css::uno::Any > & aArguments )
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if ( m_bInitialized )
+        throw frame::DoubleInitializationException();
+
+    if ( aArguments.getLength() != 1 )
+        throw lang::IllegalArgumentException( "Wrong number of arguments!",
+                                            static_cast< ::cppu::OWeakObject* >(this),
+                                            1 );
+
+    uno::Sequence< sal_Int8 > aSeq;
+    if ( !(aArguments[0] >>= aSeq) )
+        throw lang::IllegalArgumentException( "Unexpected type of argument!",
+                                            static_cast< ::cppu::OWeakObject* >(this),
+                                            1 );
+
+    uno::Reference< io::XInputStream > xInputStream(
+                    static_cast< ::cppu::OWeakObject* >( new ::comphelper::SequenceInputStream( aSeq ) ),
+                    uno::UNO_QUERY_THROW );
+    uno::Reference< io::XSeekable > xSeekable( xInputStream, uno::UNO_QUERY_THROW );
+    m_xInputStream = xInputStream;
+    m_xSeekable = xSeekable;
+    m_bInitialized = true;
+}
+
+} // anonymous namespace
+
+extern "C" SAL_DLLPUBLIC_EXPORT css::uno::XInterface *
+com_sun_star_comp_SequenceInputStreamService(
+                                             css::uno::XComponentContext *,
+                                             css::uno::Sequence<css::uno::Any> const &)
+{
+    return cppu::acquire(new SequenceInputStreamService());
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */