lib3mf :

- primo commit.
2021-09-07 16:50:23 +02:00
parent a5a65b4c8d
commit f8c998f6ff
633 changed files with 108631 additions and 0 deletions
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+/*++
+
+Copyright (C) 2019 3MF Consortium
+
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+1. Redistributions of source code must retain the above copyright notice, this
+list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright notice,
+this list of conditions and the following disclaimer in the documentation
+and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
+ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Abstract:
+
+NMR_ImportStream_Compressed.h defines the CImportStream_Compressed Class.
+This is a stream class for importing from a compressed object.
+
+--*/
+
+#include "Common/Platform/NMR_ImportStream_Shared_Memory.h"
+#include "Common/Platform/NMR_ImportStream_Compressed.h"
+#include "Common/NMR_Exception.h"
+
+namespace NMR {
+
+	CImportStream_Compressed::CImportStream_Compressed(PImportStream pCompressedStream)
+	{
+		if (nullptr == pCompressedStream)
+			throw CNMRException(NMR_ERROR_INVALIDPOINTER);
+		m_pCompressedStream = pCompressedStream;
+
+		// Source: http://zlib.net/zpipe.c
+		m_strm.zalloc = Z_NULL;
+		m_strm.zfree = Z_NULL;
+		m_strm.opaque = Z_NULL;
+		m_strm.avail_in = 0;
+		m_strm.next_in = Z_NULL;
+
+		if (inflateInit(&m_strm) != Z_OK)
+			throw CNMRException(NMR_ERROR_COULDNOTINITINFLATE);
+	}
+
+	CImportStream_Compressed::~CImportStream_Compressed()
+	{
+		(void)inflateEnd(&m_strm);
+	}
+
+	nfBool CImportStream_Compressed::seekPosition(_In_ nfUint64 position, _In_ nfBool bHasToSucceed)
+	{
+		return m_pCompressedStream->seekPosition(position, bHasToSucceed);
+	}
+
+	nfBool CImportStream_Compressed::seekForward(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed)
+	{
+		return m_pCompressedStream->seekForward(bytes, bHasToSucceed);
+	}
+
+	nfBool CImportStream_Compressed::seekFromEnd(_In_ nfUint64 bytes, _In_ nfBool bHasToSucceed)
+	{
+		return m_pCompressedStream->seekFromEnd(bytes, bHasToSucceed);
+	}
+
+	nfUint64 CImportStream_Compressed::getPosition()
+	{
+		return m_pCompressedStream->getPosition();
+	}
+
+	nfUint64 CImportStream_Compressed::readIntoBuffer(nfByte * pBuffer, nfUint64 cbTotalBytesToRead, nfBool bNeedsToReadAll)
+	{
+		nfBool firstRead = m_strm.next_in == Z_NULL;
+		nfBool hasDecompressLeftovers = m_strm.avail_out == 0;
+		if (firstRead || !hasDecompressLeftovers) {
+			m_strm.avail_in = (nfUint32) m_pCompressedStream->readIntoBuffer(in, IMPORTSTREAM_COMPRESSED_CHUNKSIZE, bNeedsToReadAll);
+			if (m_strm.avail_in == 0)
+				return 0;
+			m_strm.next_in = in;
+		}
+
+		m_strm.avail_out = (nfUint32) cbTotalBytesToRead;
+		m_strm.next_out = pBuffer;
+		nfInt32 ret = inflate(&m_strm, Z_NO_FLUSH);
+		switch (ret) {
+		case Z_NEED_DICT:
+		case Z_DATA_ERROR:
+		case Z_MEM_ERROR:
+			(void)inflateEnd(&m_strm);
+			throw CNMRException(NMR_ERROR_COULDNOTINFLATE);
+		}
+		if (m_strm.avail_out == 0) {
+			nfBool reachedEndOfBuffer = m_strm.avail_in == 0;
+			if (reachedEndOfBuffer && ret != Z_STREAM_END) {
+				throw CNMRException(NMR_ERROR_COULDNOTINFLATE);
+			}
+			return cbTotalBytesToRead;
+		}
+
+		nfUint64 bytesDecompressed = cbTotalBytesToRead - m_strm.avail_out;
+		return readIntoBuffer(pBuffer + bytesDecompressed, m_strm.avail_out, bNeedsToReadAll) + bytesDecompressed;
+	}
+	
+	nfUint64 CImportStream_Compressed::retrieveSize()
+	{
+		return m_decompressedBuffer.size();
+	}
+
+	void CImportStream_Compressed::writeToFile(_In_ const nfWChar * pwszFileName)
+	{
+		throw CNMRException(NMR_ERROR_NOTIMPLEMENTED);
+	}
+
+	PImportStream CImportStream_Compressed::copyToMemory()
+	{
+		nfUint64 bytesRead;
+		nfUint64 currentPosition = 0;
+		nfUint64 chunkSize = IMPORTSTREAM_READ_BUFFER_CHUNKSIZE;
+		do {
+			m_decompressedBuffer.resize(m_decompressedBuffer.size() + chunkSize);
+			bytesRead = readIntoBuffer(&m_decompressedBuffer[currentPosition], chunkSize, false);
+			currentPosition += bytesRead;
+		} while (chunkSize == bytesRead);
+		return std::make_shared<CImportStream_Shared_Memory>(m_decompressedBuffer.data(), m_decompressedBuffer.size());
+	}
+
+
+}