// hex.cpp - written and placed in the public domain by Wei Dai#include "pch.h"#include "hex.h"NAMESPACE_BEGIN(CryptoPP)static const byte s_vecUpper[] = "0123456789ABCDEF";static const byte s_vecLower[] = "0123456789abcdef";void HexEncoder::IsolatedInitialize(const NameValuePairs &parameters){	bool uppercase = parameters.GetValueWithDefault("Uppercase", true);	m_filter->Initialize(CombinedNameValuePairs(		parameters,		MakeParameters("EncodingLookupArray", uppercase ? &s_vecUpper[0] : &s_vecLower[0])("Log2Base", 4)));}const int *HexDecoder::GetDecodingLookupArray(){	static bool s_initialized = false;	static int s_array[256];	if (!s_initialized)	{		InitializeDecodingLookupArray(s_array, s_vecUpper, 16, true);		s_initialized = true;	}	return s_array;}NAMESPACE_END