Initial revision

1 files changed, 82 insertions, 0 deletions

diff --git a/basecode.h b/basecode.h
new file mode 100644
index 00000000..dcb49b05
--- /dev/null
+++ b/basecode.h
@@ -0,0 +1,82 @@
+#ifndef CRYPTOPP_BASECODE_H
+#define CRYPTOPP_BASECODE_H
+
+#include "filters.h"
+#include "algparam.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+class BaseN_Encoder : public Unflushable<Filter>
+{
+public:
+	BaseN_Encoder(BufferedTransformation *attachment=NULL)
+		: Unflushable<Filter>(attachment) {}
+
+	BaseN_Encoder(const byte *alphabet, int log2base, BufferedTransformation *attachment=NULL, int padding=-1)
+		: Unflushable<Filter>(attachment)
+	{
+		IsolatedInitialize(MakeParameters("EncodingLookupArray", alphabet)
+			("Log2Base", log2base)
+			("Pad", padding != -1)
+			("PaddingByte", byte(padding)));
+	}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	unsigned int Put2(const byte *begin, unsigned int 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;
+};
+
+class BaseN_Decoder : public Unflushable<Filter>
+{
+public:
+	BaseN_Decoder(BufferedTransformation *attachment=NULL)
+		: Unflushable<Filter>(attachment) {}
+
+	BaseN_Decoder(const int *lookup, int log2base, BufferedTransformation *attachment=NULL)
+		: Unflushable<Filter>(attachment)
+	{
+		IsolatedInitialize(MakeParameters("DecodingLookupArray", lookup)("Log2Base", log2base));
+	}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	unsigned int Put2(const byte *begin, unsigned int length, int messageEnd, bool blocking);
+
+	static void InitializeDecodingLookupArray(int *lookup, const byte *alphabet, unsigned int log2base, bool caseInsensitive);
+
+private:
+	const int *m_lookup;
+	int m_padding, m_bitsPerChar, m_outputBlockSize;
+	int m_bytePos, m_bitPos;
+	SecByteBlock m_outBuf;
+};
+
+class Grouper : public Bufferless<Filter>
+{
+public:
+	Grouper(BufferedTransformation *attachment=NULL)
+		: Bufferless<Filter>(attachment) {}
+
+	Grouper(int groupSize, const std::string &seperator, const std::string &terminator, BufferedTransformation *attachment=NULL)
+		: Bufferless<Filter>(attachment)
+	{
+		IsolatedInitialize(MakeParameters("GroupSize", groupSize)
+			("Seperator", ConstByteArrayParameter(seperator))
+			("Terminator", ConstByteArrayParameter(terminator)));
+	}
+
+	void IsolatedInitialize(const NameValuePairs &parameters);
+	unsigned int Put2(const byte *begin, unsigned int length, int messageEnd, bool blocking);
+
+private:
+	SecByteBlock m_seperator, m_terminator;
+	unsigned int m_groupSize, m_counter;
+};
+
+NAMESPACE_END
+
+#endif