Remove cryptoppwin submodule (#754)

third_party/cryptoppwin/include/cryptopp/basecode.h

@@ -0,0 +1,146 @@
+// basecode.h - originally written and placed in the public domain by Wei Dai
+
+/// \file
+/// \brief Base classes for working with encoders and decoders.
+
+#ifndef CRYPTOPP_BASECODE_H
+#define CRYPTOPP_BASECODE_H
+
+#include "cryptlib.h"
+#include "filters.h"
+#include "algparam.h"
+#include "argnames.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+/// \brief Encoder for bases that are a power of 2
+class CRYPTOPP_DLL BaseN_Encoder : public Unflushable<Filter>
+{
+public:
+	/// \brief Construct a BaseN_Encoder
+	/// \param attachment a BufferedTransformation to attach to this object
+	BaseN_Encoder(BufferedTransformation *attachment=NULLPTR)
+		: m_alphabet(NULLPTR), m_padding(0), m_bitsPerChar(0)
+		, m_outputBlockSize(0), m_bytePos(0), m_bitPos(0)
+			{Detach(attachment);}
+
+	/// \brief Construct a BaseN_Encoder
+	/// \param alphabet table of ASCII characters to use as the alphabet
+	/// \param log2base the log<sub>2</sub>base
+	/// \param attachment a BufferedTransformation to attach to this object
+	/// \param padding the character to use as padding
+	/// \pre log2base must be between 1 and 7 inclusive
+	/// \throw InvalidArgument if log2base is not between 1 and 7
+	BaseN_Encoder(const byte *alphabet, int log2base, BufferedTransformation *attachment=NULLPTR, int padding=-1)
+		: m_alphabet(NULLPTR), m_padding(0), m_bitsPerChar(0)
+		, m_outputBlockSize(0), m_bytePos(0), m_bitPos(0)
+	{
+		Detach(attachment);
+		BaseN_Encoder::IsolatedInitialize(
+			MakeParameters
+				(Name::EncodingLookupArray(), alphabet)
+				(Name::Log2Base(), log2base)
+				(Name::Pad(), padding != -1)
+				(Name::PaddingByte(), byte(padding)));
+	}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);
+
+private:
+	const byte *m_alphabet;
+	int m_padding, m_bitsPerChar, m_outputBlockSize;
+	int m_bytePos, m_bitPos;
+	SecByteBlock m_outBuf;
+};
+
+/// \brief Decoder for bases that are a power of 2
+class CRYPTOPP_DLL BaseN_Decoder : public Unflushable<Filter>
+{
+public:
+	/// \brief Construct a BaseN_Decoder
+	/// \param attachment a BufferedTransformation to attach to this object
+	/// \details padding is set to -1, which means use default padding. If not
+	///   required, then the value must be set via IsolatedInitialize().
+	BaseN_Decoder(BufferedTransformation *attachment=NULLPTR)
+		: m_lookup(NULLPTR), m_bitsPerChar(0)
+		, m_outputBlockSize(0), m_bytePos(0), m_bitPos(0)
+			{Detach(attachment);}
+
+	/// \brief Construct a BaseN_Decoder
+	/// \param lookup table of values
+	/// \param log2base the log<sub>2</sub>base
+	/// \param attachment a BufferedTransformation to attach to this object
+	/// \details log2base is the exponent (like 5 in 2<sup>5</sup>), and not
+	///   the number of elements (like 32).
+	/// \details padding is set to -1, which means use default padding. If not
+	///   required, then the value must be set via IsolatedInitialize().
+	BaseN_Decoder(const int *lookup, int log2base, BufferedTransformation *attachment=NULLPTR)
+		: m_lookup(NULLPTR), m_bitsPerChar(0)
+		, m_outputBlockSize(0), m_bytePos(0), m_bitPos(0)
+	{
+		Detach(attachment);
+		BaseN_Decoder::IsolatedInitialize(
+			MakeParameters
+				(Name::DecodingLookupArray(), lookup)
+				(Name::Log2Base(), log2base));
+	}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);
+
+	/// \brief Initializes BaseN lookup array
+	/// \param lookup table of values
+	/// \param alphabet table of ASCII characters
+	/// \param base the base for the encoder
+	/// \param caseInsensitive flag indicating whether the alphabet is case sensitivie
+	/// \pre COUNTOF(lookup) == 256
+	/// \pre COUNTOF(alphabet) == base
+	/// \details Internally, the function sets the first 256 elements in the lookup table to
+	///  their value from the alphabet array or -1. base is the number of element (like 32),
+	///  and not an exponent (like 5 in 2<sup>5</sup>)
+	static void CRYPTOPP_API InitializeDecodingLookupArray(int *lookup, const byte *alphabet, unsigned int base, bool caseInsensitive);
+
+private:
+	const int *m_lookup;
+	int m_bitsPerChar, m_outputBlockSize;
+	int m_bytePos, m_bitPos;
+	SecByteBlock m_outBuf;
+};
+
+/// \brief Filter that breaks input stream into groups of fixed size
+class CRYPTOPP_DLL Grouper : public Bufferless<Filter>
+{
+public:
+	/// \brief Construct a Grouper
+	/// \param attachment a BufferedTransformation to attach to this object
+	Grouper(BufferedTransformation *attachment=NULLPTR)
+		: m_groupSize(0), m_counter(0) {Detach(attachment);}
+
+	/// \brief Construct a Grouper
+	/// \param groupSize the size of the grouping
+	/// \param separator the separator to use between groups
+	/// \param terminator the terminator appeand after processing
+	/// \param attachment a BufferedTransformation to attach to this object
+	Grouper(int groupSize, const std::string &separator, const std::string &terminator, BufferedTransformation *attachment=NULLPTR)
+		: m_groupSize(0), m_counter(0)
+	{
+		Detach(attachment);
+		Grouper::IsolatedInitialize(
+			MakeParameters
+				(Name::GroupSize(), groupSize)
+				(Name::Separator(), ConstByteArrayParameter(separator))
+				(Name::Terminator(), ConstByteArrayParameter(terminator)));
+	}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);
+
+private:
+	SecByteBlock m_separator, m_terminator;
+	size_t m_groupSize, m_counter;
+};
+
+NAMESPACE_END
+
+#endif