1 files changed, 146 insertions, 0 deletions
diff --git a/ucbhelper/source/provider/fd_inputstream.cxx b/ucbhelper/source/provider/fd_inputstream.cxx
new file mode 100644
index 000000000..795c2dcae
--- /dev/null
+++ b/ucbhelper/source/provider/fd_inputstream.cxx
@@ -0,0 +1,146 @@
+/* -*- 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 <ucbhelper/fd_inputstream.hxx>
+
+#include <com/sun/star/io/IOException.hpp>
+#include <osl/diagnose.h>
+#include <sal/log.hxx>
+#include <algorithm>
+
+using namespace com::sun::star::uno;
+using namespace com::sun::star::lang;
+using namespace com::sun::star::io;
+
+namespace ucbhelper
+{
+    FdInputStream::FdInputStream( oslFileHandle tmpfl )
+        : m_tmpfl(tmpfl)
+        , m_nLength( 0 )
+    {
+        if ( !m_tmpfl )
+            osl_createTempFile( nullptr, &m_tmpfl, nullptr );
+        OSL_ENSURE( m_tmpfl, "input stream without tempfile!" );
+
+        if ( osl_setFilePos( m_tmpfl, osl_Pos_End, 0 ) == osl_File_E_None )
+        {
+            sal_uInt64 nFileSize = 0;
+            if ( osl_getFilePos( m_tmpfl, &nFileSize ) == osl_File_E_None )
+                m_nLength = nFileSize;
+            oslFileError rc = osl_setFilePos( m_tmpfl, osl_Pos_Absolut, 0 );
+            SAL_WARN_IF(rc != osl_File_E_None, "ucbhelper", "osl_setFilePos failed");
+        }
+    }
+
+    FdInputStream::~FdInputStream()
+    {
+        if ( nullptr != m_tmpfl)
+            osl_closeFile(m_tmpfl);
+    }
+
+    sal_Int32 SAL_CALL FdInputStream::readBytes(Sequence< sal_Int8 >& aData,
+                                                 sal_Int32 nBytesToRead)
+    {
+        osl::MutexGuard aGuard(m_aMutex);
+
+        sal_uInt64 nBeforePos( 0 );
+        sal_uInt64 nBytesRequested( nBytesToRead );
+        sal_uInt64 nBytesRead( 0 );
+
+        osl_getFilePos( m_tmpfl, &nBeforePos );
+
+        if ( 0 == ( nBytesRequested = std::min< sal_uInt64 >( m_nLength - nBeforePos, nBytesRequested ) ) )
+            return 0;
+
+        if ( 0 <= nBytesToRead && aData.getLength() < nBytesToRead )
+            aData.realloc( nBytesToRead );
+
+        if ( osl_readFile( m_tmpfl, aData.getArray(), nBytesRequested, &nBytesRead ) != osl_File_E_None )
+            throw IOException();
+
+        return sal_Int32( nBytesRead );
+    }
+
+
+    sal_Int32 SAL_CALL FdInputStream::readSomeBytes( Sequence< sal_Int8 >& aData,
+                                                      sal_Int32 nMaxBytesToRead )
+    {
+        return readBytes(aData,nMaxBytesToRead);
+    }
+
+
+    void SAL_CALL FdInputStream::skipBytes(sal_Int32 nBytesToSkip)
+    {
+        osl::MutexGuard aGuard(m_aMutex);
+        if(!m_tmpfl)
+            throw IOException();
+
+        oslFileError rc = osl_setFilePos( m_tmpfl, osl_Pos_Current, nBytesToSkip );
+        SAL_WARN_IF(rc != osl_File_E_None, "ucbhelper", "osl_setFilePos failed");
+    }
+
+
+    sal_Int32 SAL_CALL FdInputStream::available()
+    {
+        return std::min<sal_Int64>(SAL_MAX_INT32, m_nLength - getPosition());
+    }
+
+
+    void SAL_CALL FdInputStream::closeInput()
+    {
+        osl::MutexGuard aGuard(m_aMutex);
+        if(m_tmpfl)
+        {
+            osl_closeFile(m_tmpfl);
+            m_tmpfl = nullptr;
+        }
+    }
+
+
+    void SAL_CALL FdInputStream::seek(sal_Int64 location)
+    {
+        osl::MutexGuard aGuard(m_aMutex);
+        if(!m_tmpfl)
+            throw IOException();
+
+        oslFileError rc = osl_setFilePos( m_tmpfl, osl_Pos_Absolut, location );
+        SAL_WARN_IF(rc != osl_File_E_None, "ucbhelper", "osl_setFilePos failed");
+    }
+
+
+    sal_Int64 SAL_CALL
+    FdInputStream::getPosition()
+    {
+        osl::MutexGuard aGuard(m_aMutex);
+        if(!m_tmpfl)
+            throw IOException();
+
+        sal_uInt64 nFilePos = 0;
+        osl_getFilePos( m_tmpfl, &nFilePos );
+        return nFilePos;
+    }
+
+
+    sal_Int64 SAL_CALL FdInputStream::getLength()
+    {
+        return m_nLength;
+    }
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */