hex.cpp
1.12 KB
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// hex.cpp - written and placed in the public domain by Wei Dai
#include "pch.h"
#ifndef CRYPTOPP_IMPORTS
#include "hex.h"
NAMESPACE_BEGIN(CryptoPP)
static const byte s_vecUpper[] = "0123456789ABCDEF";
static const byte s_vecLower[] = "0123456789abcdef";
void HexEncoder::IsolatedInitialize(const NameValuePairs ¶meters)
{
bool uppercase = parameters.GetValueWithDefault(Name::Uppercase(), true);
m_filter->Initialize(CombinedNameValuePairs(
parameters,
MakeParameters(Name::EncodingLookupArray(), uppercase ? &s_vecUpper[0] : &s_vecLower[0], false)(Name::Log2Base(), 4, true)));
}
void HexDecoder::IsolatedInitialize(const NameValuePairs ¶meters)
{
BaseN_Decoder::IsolatedInitialize(CombinedNameValuePairs(
parameters,
MakeParameters(Name::DecodingLookupArray(), GetDefaultDecodingLookupArray(), false)(Name::Log2Base(), 4, true)));
}
const int *HexDecoder::GetDefaultDecodingLookupArray()
{
static volatile 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
#endif