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-rw-r--r--ucbhelper/source/provider/fd_inputstream.cxx146
1 files changed, 146 insertions, 0 deletions
diff --git a/ucbhelper/source/provider/fd_inputstream.cxx b/ucbhelper/source/provider/fd_inputstream.cxx
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index 000000000..795c2dcae
--- /dev/null
+++ b/ucbhelper/source/provider/fd_inputstream.cxx
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+/* -*- 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: */