Remove cryptoppwin submodule (#754)

third_party/cryptoppwin/include/cryptopp/zdeflate.h

@@ -0,0 +1,174 @@
+// zdeflate.h - originally written and placed in the public domain by Wei Dai
+
+/// \file zdeflate.h
+/// \brief DEFLATE compression and decompression (RFC 1951)
+
+#ifndef CRYPTOPP_ZDEFLATE_H
+#define CRYPTOPP_ZDEFLATE_H
+
+#include "cryptlib.h"
+#include "filters.h"
+#include "misc.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief Encoding table writer
+/// \since Crypto++ 1.0
+class LowFirstBitWriter : public Filter
+{
+public:
+	/// \brief Construct a LowFirstBitWriter
+	/// \param attachment an attached transformation
+	LowFirstBitWriter(BufferedTransformation *attachment);
+
+	void PutBits(unsigned long value, unsigned int length);
+	void FlushBitBuffer();
+	void ClearBitBuffer();
+
+	void StartCounting();
+	unsigned long FinishCounting();
+
+protected:
+	bool m_counting;
+	unsigned long m_bitCount;
+	unsigned long m_buffer;
+	unsigned int m_bitsBuffered, m_bytesBuffered;
+	FixedSizeSecBlock<byte, 256> m_outputBuffer;
+};
+
+/// \brief Huffman Encoder
+/// \since Crypto++ 1.0
+class HuffmanEncoder
+{
+public:
+	typedef unsigned int code_t;
+	typedef unsigned int value_t;
+
+	/// \brief Construct a HuffmanEncoder
+	HuffmanEncoder() {}
+
+	/// \brief Construct a HuffmanEncoder
+	/// \param codeBits a table of code bits
+	/// \param nCodes the number of codes in the table
+	HuffmanEncoder(const unsigned int *codeBits, unsigned int nCodes);
+
+	/// \brief Initialize or reinitialize this object
+	/// \param codeBits a table of code bits
+	/// \param nCodes the number of codes in the table
+	void Initialize(const unsigned int *codeBits, unsigned int nCodes);
+
+	static void GenerateCodeLengths(unsigned int *codeBits, unsigned int maxCodeBits, const unsigned int *codeCounts, size_t nCodes);
+
+	void Encode(LowFirstBitWriter &writer, value_t value) const;
+
+	struct Code
+	{
+		unsigned int code;
+		unsigned int len;
+	};
+
+	SecBlock<Code> m_valueToCode;
+};
+
+/// \brief DEFLATE compressor (RFC 1951)
+/// \since Crypto++ 1.0
+class Deflator : public LowFirstBitWriter
+{
+public:
+	/// \brief Deflate level as enumerated values.
+	enum {
+		/// \brief Minimum deflation level, fastest speed (0)
+		MIN_DEFLATE_LEVEL = 0,
+		/// \brief Default deflation level, compromise between speed (6)
+		DEFAULT_DEFLATE_LEVEL = 6,
+		/// \brief Minimum deflation level, slowest speed (9)
+		MAX_DEFLATE_LEVEL = 9};
+
+	/// \brief Windows size as enumerated values.
+	enum {
+		/// \brief Minimum window size, smallest table (9)
+		MIN_LOG2_WINDOW_SIZE = 9,
+		/// \brief Default window size (15)
+		DEFAULT_LOG2_WINDOW_SIZE = 15,
+		/// \brief Maximum window size, largest table (15)
+		MAX_LOG2_WINDOW_SIZE = 15};
+
+	/// \brief Construct a Deflator compressor
+	/// \param attachment an attached transformation
+	/// \param deflateLevel the deflate level
+	/// \param log2WindowSize the window size
+	/// \param detectUncompressible flag to detect if data is compressible
+	/// \details detectUncompressible makes it faster to process uncompressible files, but
+	///   if a file has both compressible and uncompressible parts, it may fail to compress
+	///   some of the compressible parts.
+	Deflator(BufferedTransformation *attachment=NULLPTR, int deflateLevel=DEFAULT_DEFLATE_LEVEL, int log2WindowSize=DEFAULT_LOG2_WINDOW_SIZE, bool detectUncompressible=true);
+	/// \brief Construct a Deflator compressor
+	/// \param parameters a set of NameValuePairs to initialize this object
+	/// \param attachment an attached transformation
+	/// \details Possible parameter names: Log2WindowSize, DeflateLevel, DetectUncompressible
+	Deflator(const NameValuePairs &parameters, BufferedTransformation *attachment=NULLPTR);
+
+	/// \brief Sets the deflation level
+	/// \param deflateLevel the level of deflation
+	/// \details SetDeflateLevel can be used to set the deflate level in the middle of compression
+	void SetDeflateLevel(int deflateLevel);
+
+	/// \brief Retrieves the deflation level
+	/// \return the level of deflation
+	int GetDeflateLevel() const {return m_deflateLevel;}
+
+	/// \brief Retrieves the window size
+	/// \return the windows size
+	int GetLog2WindowSize() const {return m_log2WindowSize;}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	size_t Put2(const byte *inString, size_t length, int messageEnd, bool blocking);
+	bool IsolatedFlush(bool hardFlush, bool blocking);
+
+protected:
+	virtual void WritePrestreamHeader() {}
+	virtual void ProcessUncompressedData(const byte *string, size_t length)
+		{CRYPTOPP_UNUSED(string), CRYPTOPP_UNUSED(length);}
+	virtual void WritePoststreamTail() {}
+
+	enum {STORED = 0, STATIC = 1, DYNAMIC = 2};
+	enum {MIN_MATCH = 3, MAX_MATCH = 258};
+
+	void InitializeStaticEncoders();
+	void Reset(bool forceReset = false);
+	unsigned int FillWindow(const byte *str, size_t length);
+	unsigned int ComputeHash(const byte *str) const;
+	unsigned int LongestMatch(unsigned int &bestMatch) const;
+	void InsertString(unsigned int start);
+	void ProcessBuffer();
+
+	void LiteralByte(byte b);
+	void MatchFound(unsigned int distance, unsigned int length);
+	void EncodeBlock(bool eof, unsigned int blockType);
+	void EndBlock(bool eof);
+
+	struct EncodedMatch
+	{
+		unsigned literalCode : 9;
+		unsigned literalExtra : 5;
+		unsigned distanceCode : 5;
+		unsigned distanceExtra : 13;
+	};
+
+	int m_deflateLevel, m_log2WindowSize, m_compressibleDeflateLevel;
+	unsigned int m_detectSkip, m_detectCount;
+	unsigned int DSIZE, DMASK, HSIZE, HMASK, GOOD_MATCH, MAX_LAZYLENGTH, MAX_CHAIN_LENGTH;
+	bool m_headerWritten, m_matchAvailable;
+	unsigned int m_dictionaryEnd, m_stringStart, m_lookahead, m_minLookahead, m_previousMatch, m_previousLength;
+	HuffmanEncoder m_staticLiteralEncoder, m_staticDistanceEncoder, m_dynamicLiteralEncoder, m_dynamicDistanceEncoder;
+	SecByteBlock m_byteBuffer;
+	SecBlock<word16> m_head, m_prev;
+	FixedSizeSecBlock<unsigned int, 286> m_literalCounts;
+	FixedSizeSecBlock<unsigned int, 30> m_distanceCounts;
+	SecBlock<EncodedMatch> m_matchBuffer;
+	unsigned int m_matchBufferEnd, m_blockStart, m_blockLength;
+};
+
+NAMESPACE_END
+
+#endif