1 files changed, 171 insertions, 0 deletions
diff --git a/comphelper/source/streaming/oslfile2streamwrap.cxx b/comphelper/source/streaming/oslfile2streamwrap.cxx
new file mode 100644
index 0000000000..243634610c
--- /dev/null
+++ b/comphelper/source/streaming/oslfile2streamwrap.cxx
@@ -0,0 +1,171 @@
+/* -*- 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 <com/sun/star/io/BufferSizeExceededException.hpp>
+#include <com/sun/star/io/NotConnectedException.hpp>
+#include <comphelper/oslfile2streamwrap.hxx>
+#include <o3tl/safeint.hxx>
+#include <osl/file.hxx>
+
+#include <algorithm>
+
+namespace comphelper
+{
+    using namespace osl;
+
+
+OSLInputStreamWrapper::OSLInputStreamWrapper( File& _rFile )
+    : m_pFile(&_rFile)
+{
+}
+
+
+OSLInputStreamWrapper::~OSLInputStreamWrapper()
+{
+}
+
+
+sal_Int32 SAL_CALL OSLInputStreamWrapper::readBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nBytesToRead)
+{
+    if (!m_pFile)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    if (nBytesToRead < 0)
+        throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
+
+    aData.realloc(nBytesToRead);
+
+    std::scoped_lock aGuard( m_aMutex );
+
+    sal_uInt64 nRead = 0;
+    FileBase::RC eError = m_pFile->read(static_cast<void*>(aData.getArray()), nBytesToRead, nRead);
+    if (eError != FileBase::E_None)
+        throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
+
+    // If the read character < MaxLength, adjust css::uno::Sequence
+    if (nRead < o3tl::make_unsigned(nBytesToRead))
+        aData.realloc( sal::static_int_cast< sal_Int32 >(nRead) );
+
+    return sal::static_int_cast< sal_Int32 >(nRead);
+}
+
+sal_Int32 SAL_CALL OSLInputStreamWrapper::readSomeBytes(css::uno::Sequence< sal_Int8 >& aData, sal_Int32 nMaxBytesToRead)
+{
+    if (!m_pFile)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    if (nMaxBytesToRead < 0)
+        throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
+
+    return readBytes(aData, nMaxBytesToRead);
+}
+
+void SAL_CALL OSLInputStreamWrapper::skipBytes(sal_Int32 nBytesToSkip)
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if (!m_pFile)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    sal_uInt64 nCurrentPos;
+    FileBase::RC eError = m_pFile->getPos(nCurrentPos);
+    if (eError != FileBase::E_None)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    sal_uInt64 nNewPos = nCurrentPos + nBytesToSkip;
+    eError = m_pFile->setPos(osl_Pos_Absolut, nNewPos);
+    if (eError != FileBase::E_None)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+}
+
+sal_Int32 SAL_CALL OSLInputStreamWrapper::available()
+{
+    std::scoped_lock aGuard( m_aMutex );
+    if (!m_pFile)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    sal_uInt64 nPos;
+    FileBase::RC eError = m_pFile->getPos(nPos);
+    if (eError != FileBase::E_None)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    eError = m_pFile->setPos(osl_Pos_End, 0);
+    if (eError != FileBase::E_None)
+       throw css::io::NotConnectedException(OUString(),static_cast<css::uno::XWeak*>(this));
+
+    sal_uInt64 nAvailable;
+    eError = m_pFile->getPos(nAvailable);
+    if (eError != FileBase::E_None)
+       throw css::io::NotConnectedException(OUString(),static_cast<css::uno::XWeak*>(this));
+
+    nAvailable = nAvailable - nPos;
+    eError = m_pFile->setPos(osl_Pos_Absolut, nPos);
+    if (eError != FileBase::E_None)
+       throw css::io::NotConnectedException(OUString(),static_cast<css::uno::XWeak*>(this));
+    return std::min<sal_Int64>(nAvailable, SAL_MAX_INT32);
+}
+
+
+void SAL_CALL OSLInputStreamWrapper::closeInput()
+{
+    if (!m_pFile)
+        throw css::io::NotConnectedException(OUString(), static_cast<css::uno::XWeak*>(this));
+
+    m_pFile->close();
+
+    m_pFile = nullptr;
+}
+
+/*************************************************************************/
+// css::io::XOutputStream
+
+
+OSLOutputStreamWrapper::OSLOutputStreamWrapper(osl::File & _rFile):
+    rFile(_rFile)
+{}
+
+OSLOutputStreamWrapper::~OSLOutputStreamWrapper() {}
+
+void SAL_CALL OSLOutputStreamWrapper::writeBytes(const css::uno::Sequence< sal_Int8 >& aData)
+{
+    sal_uInt64 nWritten;
+    FileBase::RC eError = rFile.write(aData.getConstArray(),aData.getLength(), nWritten);
+    if (eError != FileBase::E_None
+        || nWritten != sal::static_int_cast< sal_uInt32 >(aData.getLength()))
+    {
+        throw css::io::BufferSizeExceededException(OUString(),static_cast<css::uno::XWeak*>(this));
+    }
+}
+
+
+void SAL_CALL OSLOutputStreamWrapper::flush()
+{
+}
+
+
+void SAL_CALL OSLOutputStreamWrapper::closeOutput()
+{
+    rFile.close();
+}
+
+} // namespace comphelper
+
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */