SaraP
86 lines
2.8 KiB
C++
86 lines
2.8 KiB
C++
/*++
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Copyright (C) 2019 3MF Consortium
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All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice, this
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list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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Abstract:
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NMR_ExportStream_Dummy.cpp implementa the ExportStream Dummy class. It will not
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store any data written to it, but it will correctly track the seek position and
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size of the data. It is designed to be used for measuring the size of the stream.
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--*/
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#include "Common/Platform/NMR_ExportStream_Dummy.h"
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#include "Common/NMR_Exception.h"
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namespace NMR {
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CExportStreamDummy::CExportStreamDummy() {
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m_Size = 0;
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m_Position = 0;
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}
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nfBool CExportStreamDummy::seekPosition(_In_ nfUint64 position, _In_ nfBool bHasToSucceed) {
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if (position >= m_Size && bHasToSucceed) {
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throw CNMRException(NMR_ERROR_COULDNOTSEEKSTREAM);
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}
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m_Position = position;
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return true;
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}
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nfBool CExportStreamDummy::seekForward(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed) {
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if (bytes + m_Position >= m_Size && bHasToSucceed) {
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throw CNMRException(NMR_ERROR_COULDNOTSEEKSTREAM);
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}
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m_Position = bytes + m_Position;
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return true;
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}
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nfBool CExportStreamDummy::seekFromEnd(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed) {
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if (bytes >= m_Size && bHasToSucceed) {
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throw CNMRException(NMR_ERROR_COULDNOTSEEKSTREAM);
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}
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m_Position = m_Size - bytes;
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return true;
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}
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nfUint64 CExportStreamDummy::getPosition() {
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return m_Position;
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}
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nfUint64 CExportStreamDummy::writeBuffer(_In_ const void * pBuffer, _In_ nfUint64 cbTotalBytesToWrite) {
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if ((m_Position + cbTotalBytesToWrite) > m_Size) {
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m_Size = m_Position + cbTotalBytesToWrite;
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}
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m_Position += cbTotalBytesToWrite;
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return cbTotalBytesToWrite;
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}
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nfUint64 CExportStreamDummy::getDataSize() {
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return m_Size;
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}
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}
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